This chroma.js-powered tool is here to help us mastering multi-hued, multi-stops color scales.
\r\nYou can also save your palette for later by bookmarking this page using {isMac ? 'cmd' : 'ctrl'}+d.
\r\nCreated by Gregor Aisch for the sake of better\r\n use of colors in maps and data visualizations. Feel free to fork on Github.
\r\n{steps}\r\n'{steps.join(`', '`)}'\r\n['{steps.join(`', '`)}']\r\n{steps.join('\\n')}\r\n[{steps.map(c => '0x'+c.substr(1)).join(`,`)}]\r\n\r\nimport { scaleThreshold } from 'd3-scale';\r\n\r\nfunction palette(min, max) {\r\n const d = (max-min)/{steps.length};\r\n return = scaleThreshold()\r\n .range(['{steps.join(`', '`)}'])\r\n .domain([{steps.slice(1).map((v,i) => `min + d*${i+1}`)}]);\r\n}\r\n",
+ "\r\n\r\n\r\n\r\n\r\nThis chroma.js-powered tool is here to help us mastering multi-hued, multi-stops color scales.
',r=v(),g.$$.fragment.c(),o=v(),m.$$.fragment.c(),i=v(),_.$$.fragment.c(),a=v(),w.$$.fragment.c(),c=v(),(u=d("div")).innerHTML='Created by Gregor Aisch for the sake of better\n\t\t\t use of colors in maps and data visualizations. Feel free to fork on Github.
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b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function'); + } + function create_slot(definition, ctx, fn) { + if (definition) { + const slot_ctx = get_slot_context(definition, ctx, fn); + return definition[0](slot_ctx); + } + } + function get_slot_context(definition, ctx, fn) { + return definition[1] + ? assign({}, assign(ctx.$$scope.ctx, definition[1](fn ? fn(ctx) : {}))) + : ctx.$$scope.ctx; + } + function get_slot_changes(definition, ctx, changed, fn) { + return definition[1] + ? assign({}, assign(ctx.$$scope.changed || {}, definition[1](fn ? fn(changed) : {}))) + : ctx.$$scope.changed || {}; + } + function exclude_internal_props(props) { + const result = {}; + for (const k in props) + if (k[0] !== '$') + result[k] = props[k]; + return result; + } + + function append(target, node) { + target.appendChild(node); + } + function insert(target, node, anchor) { + target.insertBefore(node, anchor || null); + } + function detach(node) { + node.parentNode.removeChild(node); + } + function destroy_each(iterations, detaching) { + for (let i = 0; i < iterations.length; i += 1) { + if (iterations[i]) + iterations[i].d(detaching); + } + } + function element(name) { + return document.createElement(name); + } + function svg_element(name) { + return document.createElementNS('http://www.w3.org/2000/svg', name); + } + function text(data) { + return document.createTextNode(data); + } + function space() { + return text(' '); + } + function empty() { + return text(''); + } + function listen(node, event, handler, options) { + node.addEventListener(event, handler, options); + return () => node.removeEventListener(event, handler, options); + } + function prevent_default(fn) { + return function (event) { + event.preventDefault(); + // @ts-ignore + return fn.call(this, event); + }; + } + function stop_propagation(fn) { + return function (event) { + event.stopPropagation(); + // @ts-ignore + return fn.call(this, event); + }; + } + function attr(node, attribute, value) { + if (value == null) + node.removeAttribute(attribute); + else + node.setAttribute(attribute, value); + } + function to_number(value) { + return value === '' ? undefined : +value; + } + function children(element) { + return Array.from(element.childNodes); + } + function set_data(text, data) { + data = '' + data; + if (text.data !== data) + text.data = data; + } + function set_style(node, key, value) { + node.style.setProperty(key, value); + } + function add_resize_listener(element, fn) { + if (getComputedStyle(element).position === 'static') { + element.style.position = 'relative'; + } + const object = document.createElement('object'); + object.setAttribute('style', 'display: block; position: absolute; top: 0; left: 0; height: 100%; width: 100%; overflow: hidden; pointer-events: none; z-index: -1;'); + object.type = 'text/html'; + let win; + object.onload = () => { + win = object.contentDocument.defaultView; + win.addEventListener('resize', fn); + }; + if (/Trident/.test(navigator.userAgent)) { + element.appendChild(object); + object.data = 'about:blank'; + } + else { + object.data = 'about:blank'; + element.appendChild(object); + } + return { + cancel: () => { + win && win.removeEventListener && win.removeEventListener('resize', fn); + element.removeChild(object); + } + }; + } + function toggle_class(element, name, toggle) { + element.classList[toggle ? 'add' : 'remove'](name); + } + + let current_component; + function set_current_component(component) { + current_component = component; + } + function get_current_component() { + if (!current_component) + throw new Error(`Function called outside component initialization`); + return current_component; + } + function beforeUpdate(fn) { + get_current_component().$$.before_render.push(fn); + } + // TODO figure out if we still want to support + // shorthand events, or if we want to implement + // a real bubbling mechanism + function bubble(component, event) { + const callbacks = component.$$.callbacks[event.type]; + if (callbacks) { + callbacks.slice().forEach(fn => fn(event)); + } + } + + const dirty_components = []; + const resolved_promise = Promise.resolve(); + let update_scheduled = false; + const binding_callbacks = []; + const render_callbacks = []; + const flush_callbacks = []; + function schedule_update() { + if (!update_scheduled) { + update_scheduled = true; + resolved_promise.then(flush); + } + } + function add_binding_callback(fn) { + binding_callbacks.push(fn); + } + function add_render_callback(fn) { + render_callbacks.push(fn); + } + function add_flush_callback(fn) { + flush_callbacks.push(fn); + } + function flush() { + const seen_callbacks = new Set(); + do { + // first, call beforeUpdate functions + // and update components + while (dirty_components.length) { + const component = dirty_components.shift(); + set_current_component(component); + update(component.$$); + } + while (binding_callbacks.length) + binding_callbacks.shift()(); + // then, once components are updated, call + // afterUpdate functions. This may cause + // subsequent updates... + while (render_callbacks.length) { + const callback = render_callbacks.pop(); + if (!seen_callbacks.has(callback)) { + callback(); + // ...so guard against infinite loops + seen_callbacks.add(callback); + } + } + } while (dirty_components.length); + while (flush_callbacks.length) { + flush_callbacks.pop()(); + } + update_scheduled = false; + } + function update($$) { + if ($$.fragment) { + $$.update($$.dirty); + run_all($$.before_render); + $$.fragment.p($$.dirty, $$.ctx); + $$.dirty = null; + $$.after_render.forEach(add_render_callback); + } + } + const outroing = new Set(); + let outros; + function group_outros() { + outros = { + remaining: 0, + callbacks: [] + }; + } + function check_outros() { + if (!outros.remaining) { + run_all(outros.callbacks); + } + } + function transition_in(block, local) { + if (block && block.i) { + outroing.delete(block); + block.i(local); + } + } + function transition_out(block, local, callback) { + if (block && block.o) { + if (outroing.has(block)) + return; + outroing.add(block); + outros.callbacks.push(() => { + outroing.delete(block); + if (callback) { + block.d(1); + callback(); + } + }); + block.o(local); + } + } + + function bind(component, name, callback) { + if (component.$$.props.indexOf(name) === -1) + return; + component.$$.bound[name] = callback; + callback(component.$$.ctx[name]); + } + function mount_component(component, target, anchor) { + const { fragment, on_mount, on_destroy, after_render } = component.$$; + fragment.m(target, anchor); + // onMount happens after the initial afterUpdate. Because + // afterUpdate callbacks happen in reverse order (inner first) + // we schedule onMount callbacks before afterUpdate callbacks + add_render_callback(() => { + const new_on_destroy = on_mount.map(run).filter(is_function); + if (on_destroy) { + on_destroy.push(...new_on_destroy); + } + else { + // Edge case - component was destroyed immediately, + // most likely as a result of a binding initialising + run_all(new_on_destroy); + } + component.$$.on_mount = []; + }); + after_render.forEach(add_render_callback); + } + function destroy_component(component, detaching) { + if (component.$$.fragment) { + run_all(component.$$.on_destroy); + if (detaching) + component.$$.fragment.d(1); + // TODO null out other refs, including component.$$ (but need to + // preserve final state?) + component.$$.on_destroy = component.$$.fragment = null; + component.$$.ctx = {}; + } + } + function make_dirty(component, key) { + if (!component.$$.dirty) { + dirty_components.push(component); + schedule_update(); + component.$$.dirty = blank_object(); + } + component.$$.dirty[key] = true; + } + function init(component, options, instance, create_fragment, not_equal$$1, prop_names) { + const parent_component = current_component; + set_current_component(component); + const props = options.props || {}; + const $$ = component.$$ = { + fragment: null, + ctx: null, + // state + props: prop_names, + update: noop, + not_equal: not_equal$$1, + bound: blank_object(), + // lifecycle + on_mount: [], + on_destroy: [], + before_render: [], + after_render: [], + context: new Map(parent_component ? parent_component.$$.context : []), + // everything else + callbacks: blank_object(), + dirty: null + }; + let ready = false; + $$.ctx = instance + ? instance(component, props, (key, value) => { + if ($$.ctx && not_equal$$1($$.ctx[key], $$.ctx[key] = value)) { + if ($$.bound[key]) + $$.bound[key](value); + if (ready) + make_dirty(component, key); + } + }) + : props; + $$.update(); + ready = true; + run_all($$.before_render); + $$.fragment = create_fragment($$.ctx); + if (options.target) { + if (options.hydrate) { + // eslint-disable-next-line @typescript-eslint/no-non-null-assertion + $$.fragment.l(children(options.target)); + } + else { + // eslint-disable-next-line @typescript-eslint/no-non-null-assertion + $$.fragment.c(); + } + if (options.intro) + transition_in(component.$$.fragment); + mount_component(component, options.target, options.anchor); + flush(); + } + set_current_component(parent_component); + } + class SvelteComponent { + $destroy() { + destroy_component(this, 1); + this.$destroy = noop; + } + $on(type, callback) { + const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = [])); + callbacks.push(callback); + return () => { + const index = callbacks.indexOf(callback); + if (index !== -1) + callbacks.splice(index, 1); + }; + } + $set() { + // overridden by instance, if it has props + } + } + class SvelteComponentDev extends SvelteComponent { + constructor(options) { + if (!options || (!options.target && !options.$$inline)) { + throw new Error(`'target' is a required option`); + } + super(); + } + $destroy() { + super.$destroy(); + this.$destroy = () => { + console.warn(`Component was already destroyed`); // eslint-disable-line no-console + }; + } + } + + var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; + + function unwrapExports (x) { + return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x; + } + + function createCommonjsModule(fn, module) { + return module = { exports: {} }, fn(module, module.exports), module.exports; + } + + var chroma = createCommonjsModule(function (module, exports) { + /** + * chroma.js - JavaScript library for color conversions + * + * Copyright (c) 2011-2019, Gregor Aisch + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name Gregor Aisch may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL GREGOR AISCH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * ------------------------------------------------------- + * + * chroma.js includes colors from colorbrewer2.org, which are released under + * the following license: + * + * Copyright (c) 2002 Cynthia Brewer, Mark Harrower, + * and The Pennsylvania State University. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, + * either express or implied. See the License for the specific + * language governing permissions and limitations under the License. + * + * ------------------------------------------------------ + * + * Named colors are taken from X11 Color Names. + * http://www.w3.org/TR/css3-color/#svg-color + * + * @preserve + */ + + (function (global, factory) { + module.exports = factory(); + }(commonjsGlobal, (function () { + var limit = function (x, min, max) { + if ( min === void 0 ) min=0; + if ( max === void 0 ) max=1; + + return x < min ? min : x > max ? max : x; + }; + + var clip_rgb = function (rgb) { + rgb._clipped = false; + rgb._unclipped = rgb.slice(0); + for (var i=0; i<=3; i++) { + if (i < 3) { + if (rgb[i] < 0 || rgb[i] > 255) { rgb._clipped = true; } + rgb[i] = limit(rgb[i], 0, 255); + } else if (i === 3) { + rgb[i] = limit(rgb[i], 0, 1); + } + } + return rgb; + }; + + // ported from jQuery's $.type + var classToType = {}; + for (var i = 0, list = ['Boolean', 'Number', 'String', 'Function', 'Array', 'Date', 'RegExp', 'Undefined', 'Null']; i < list.length; i += 1) { + var name = list[i]; + + classToType[("[object " + name + "]")] = name.toLowerCase(); + } + var type = function(obj) { + return classToType[Object.prototype.toString.call(obj)] || "object"; + }; + + var unpack = function (args, keyOrder) { + if ( keyOrder === void 0 ) keyOrder=null; + + // if called with more than 3 arguments, we return the arguments + if (args.length >= 3) { return Array.prototype.slice.call(args); } + // with less than 3 args we check if first arg is object + // and use the keyOrder string to extract and sort properties + if (type(args[0]) == 'object' && keyOrder) { + return keyOrder.split('') + .filter(function (k) { return args[0][k] !== undefined; }) + .map(function (k) { return args[0][k]; }); + } + // otherwise we just return the first argument + // (which we suppose is an array of args) + return args[0]; + }; + + var last = function (args) { + if (args.length < 2) { return null; } + var l = args.length-1; + if (type(args[l]) == 'string') { return args[l].toLowerCase(); } + return null; + }; + + var PI = Math.PI; + + var utils = { + clip_rgb: clip_rgb, + limit: limit, + type: type, + unpack: unpack, + last: last, + PI: PI, + TWOPI: PI*2, + PITHIRD: PI/3, + DEG2RAD: PI / 180, + RAD2DEG: 180 / PI + }; + + var input = { + format: {}, + autodetect: [] + }; + + var last$1 = utils.last; + var clip_rgb$1 = utils.clip_rgb; + var type$1 = utils.type; + + + var Color = function Color() { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var me = this; + if (type$1(args[0]) === 'object' && + args[0].constructor && + args[0].constructor === this.constructor) { + // the argument is already a Color instance + return args[0]; + } + + // last argument could be the mode + var mode = last$1(args); + var autodetect = false; + + if (!mode) { + autodetect = true; + if (!input.sorted) { + input.autodetect = input.autodetect.sort(function (a,b) { return b.p - a.p; }); + input.sorted = true; + } + // auto-detect format + for (var i = 0, list = input.autodetect; i < list.length; i += 1) { + var chk = list[i]; + + mode = chk.test.apply(chk, args); + if (mode) { break; } + } + } + + if (input.format[mode]) { + var rgb = input.format[mode].apply(null, autodetect ? args : args.slice(0,-1)); + me._rgb = clip_rgb$1(rgb); + } else { + throw new Error('unknown format: '+args); + } + + // add alpha channel + if (me._rgb.length === 3) { me._rgb.push(1); } + }; + + Color.prototype.toString = function toString () { + if (type$1(this.hex) == 'function') { return this.hex(); } + return ("[" + (this._rgb.join(',')) + "]"); + }; + + var Color_1 = Color; + + var chroma = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( chroma.Color, [ null ].concat( args) )); + }; + + chroma.Color = Color_1; + chroma.version = '2.0.4'; + + var chroma_1 = chroma; + + var unpack$1 = utils.unpack; + var max = Math.max; + + var rgb2cmyk = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$1(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + r = r / 255; + g = g / 255; + b = b / 255; + var k = 1 - max(r,max(g,b)); + var f = k < 1 ? 1 / (1-k) : 0; + var c = (1-r-k) * f; + var m = (1-g-k) * f; + var y = (1-b-k) * f; + return [c,m,y,k]; + }; + + var rgb2cmyk_1 = rgb2cmyk; + + var unpack$2 = utils.unpack; + + var cmyk2rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$2(args, 'cmyk'); + var c = args[0]; + var m = args[1]; + var y = args[2]; + var k = args[3]; + var alpha = args.length > 4 ? args[4] : 1; + if (k === 1) { return [0,0,0,alpha]; } + return [ + c >= 1 ? 0 : 255 * (1-c) * (1-k), // r + m >= 1 ? 0 : 255 * (1-m) * (1-k), // g + y >= 1 ? 0 : 255 * (1-y) * (1-k), // b + alpha + ]; + }; + + var cmyk2rgb_1 = cmyk2rgb; + + var unpack$3 = utils.unpack; + var type$2 = utils.type; + + + + Color_1.prototype.cmyk = function() { + return rgb2cmyk_1(this._rgb); + }; + + chroma_1.cmyk = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['cmyk']) )); + }; + + input.format.cmyk = cmyk2rgb_1; + + input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$3(args, 'cmyk'); + if (type$2(args) === 'array' && args.length === 4) { + return 'cmyk'; + } + } + }); + + var unpack$4 = utils.unpack; + var last$2 = utils.last; + var rnd = function (a) { return Math.round(a*100)/100; }; + + /* + * supported arguments: + * - hsl2css(h,s,l) + * - hsl2css(h,s,l,a) + * - hsl2css([h,s,l], mode) + * - hsl2css([h,s,l,a], mode) + * - hsl2css({h,s,l,a}, mode) + */ + var hsl2css = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var hsla = unpack$4(args, 'hsla'); + var mode = last$2(args) || 'lsa'; + hsla[0] = rnd(hsla[0] || 0); + hsla[1] = rnd(hsla[1]*100) + '%'; + hsla[2] = rnd(hsla[2]*100) + '%'; + if (mode === 'hsla' || (hsla.length > 3 && hsla[3]<1)) { + hsla[3] = hsla.length > 3 ? hsla[3] : 1; + mode = 'hsla'; + } else { + hsla.length = 3; + } + return (mode + "(" + (hsla.join(',')) + ")"); + }; + + var hsl2css_1 = hsl2css; + + var unpack$5 = utils.unpack; + + /* + * supported arguments: + * - rgb2hsl(r,g,b) + * - rgb2hsl(r,g,b,a) + * - rgb2hsl([r,g,b]) + * - rgb2hsl([r,g,b,a]) + * - rgb2hsl({r,g,b,a}) + */ + var rgb2hsl = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$5(args, 'rgba'); + var r = args[0]; + var g = args[1]; + var b = args[2]; + + r /= 255; + g /= 255; + b /= 255; + + var min = Math.min(r, g, b); + var max = Math.max(r, g, b); + + var l = (max + min) / 2; + var s, h; + + if (max === min){ + s = 0; + h = Number.NaN; + } else { + s = l < 0.5 ? (max - min) / (max + min) : (max - min) / (2 - max - min); + } + + if (r == max) { h = (g - b) / (max - min); } + else if (g == max) { h = 2 + (b - r) / (max - min); } + else if (b == max) { h = 4 + (r - g) / (max - min); } + + h *= 60; + if (h < 0) { h += 360; } + if (args.length>3 && args[3]!==undefined) { return [h,s,l,args[3]]; } + return [h,s,l]; + }; + + var rgb2hsl_1 = rgb2hsl; + + var unpack$6 = utils.unpack; + var last$3 = utils.last; + + + var round = Math.round; + + /* + * supported arguments: + * - rgb2css(r,g,b) + * - rgb2css(r,g,b,a) + * - rgb2css([r,g,b], mode) + * - rgb2css([r,g,b,a], mode) + * - rgb2css({r,g,b,a}, mode) + */ + var rgb2css = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var rgba = unpack$6(args, 'rgba'); + var mode = last$3(args) || 'rgb'; + if (mode.substr(0,3) == 'hsl') { + return hsl2css_1(rgb2hsl_1(rgba), mode); + } + rgba[0] = round(rgba[0]); + rgba[1] = round(rgba[1]); + rgba[2] = round(rgba[2]); + if (mode === 'rgba' || (rgba.length > 3 && rgba[3]<1)) { + rgba[3] = rgba.length > 3 ? rgba[3] : 1; + mode = 'rgba'; + } + return (mode + "(" + (rgba.slice(0,mode==='rgb'?3:4).join(',')) + ")"); + }; + + var rgb2css_1 = rgb2css; + + var unpack$7 = utils.unpack; + var round$1 = Math.round; + + var hsl2rgb = function () { + var assign; + + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + args = unpack$7(args, 'hsl'); + var h = args[0]; + var s = args[1]; + var l = args[2]; + var r,g,b; + if (s === 0) { + r = g = b = l*255; + } else { + var t3 = [0,0,0]; + var c = [0,0,0]; + var t2 = l < 0.5 ? l * (1+s) : l+s-l*s; + var t1 = 2 * l - t2; + var h_ = h / 360; + t3[0] = h_ + 1/3; + t3[1] = h_; + t3[2] = h_ - 1/3; + for (var i=0; i<3; i++) { + if (t3[i] < 0) { t3[i] += 1; } + if (t3[i] > 1) { t3[i] -= 1; } + if (6 * t3[i] < 1) + { c[i] = t1 + (t2 - t1) * 6 * t3[i]; } + else if (2 * t3[i] < 1) + { c[i] = t2; } + else if (3 * t3[i] < 2) + { c[i] = t1 + (t2 - t1) * ((2 / 3) - t3[i]) * 6; } + else + { c[i] = t1; } + } + (assign = [round$1(c[0]*255),round$1(c[1]*255),round$1(c[2]*255)], r = assign[0], g = assign[1], b = assign[2]); + } + if (args.length > 3) { + // keep alpha channel + return [r,g,b,args[3]]; + } + return [r,g,b,1]; + }; + + var hsl2rgb_1 = hsl2rgb; + + var RE_RGB = /^rgb\(\s*(-?\d+),\s*(-?\d+)\s*,\s*(-?\d+)\s*\)$/; + var RE_RGBA = /^rgba\(\s*(-?\d+),\s*(-?\d+)\s*,\s*(-?\d+)\s*,\s*([01]|[01]?\.\d+)\)$/; + var RE_RGB_PCT = /^rgb\(\s*(-?\d+(?:\.\d+)?)%,\s*(-?\d+(?:\.\d+)?)%\s*,\s*(-?\d+(?:\.\d+)?)%\s*\)$/; + var RE_RGBA_PCT = /^rgba\(\s*(-?\d+(?:\.\d+)?)%,\s*(-?\d+(?:\.\d+)?)%\s*,\s*(-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)$/; + var RE_HSL = /^hsl\(\s*(-?\d+(?:\.\d+)?),\s*(-?\d+(?:\.\d+)?)%\s*,\s*(-?\d+(?:\.\d+)?)%\s*\)$/; + var RE_HSLA = /^hsla\(\s*(-?\d+(?:\.\d+)?),\s*(-?\d+(?:\.\d+)?)%\s*,\s*(-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)$/; + + var round$2 = Math.round; + + var css2rgb = function (css) { + css = css.toLowerCase().trim(); + var m; + + if (input.format.named) { + try { + return input.format.named(css); + } catch (e) { + // eslint-disable-next-line + } + } + + // rgb(250,20,0) + if ((m = css.match(RE_RGB))) { + var rgb = m.slice(1,4); + for (var i=0; i<3; i++) { + rgb[i] = +rgb[i]; + } + rgb[3] = 1; // default alpha + return rgb; + } + + // rgba(250,20,0,0.4) + if ((m = css.match(RE_RGBA))) { + var rgb$1 = m.slice(1,5); + for (var i$1=0; i$1<4; i$1++) { + rgb$1[i$1] = +rgb$1[i$1]; + } + return rgb$1; + } + + // rgb(100%,0%,0%) + if ((m = css.match(RE_RGB_PCT))) { + var rgb$2 = m.slice(1,4); + for (var i$2=0; i$2<3; i$2++) { + rgb$2[i$2] = round$2(rgb$2[i$2] * 2.55); + } + rgb$2[3] = 1; // default alpha + return rgb$2; + } + + // rgba(100%,0%,0%,0.4) + if ((m = css.match(RE_RGBA_PCT))) { + var rgb$3 = m.slice(1,5); + for (var i$3=0; i$3<3; i$3++) { + rgb$3[i$3] = round$2(rgb$3[i$3] * 2.55); + } + rgb$3[3] = +rgb$3[3]; + return rgb$3; + } + + // hsl(0,100%,50%) + if ((m = css.match(RE_HSL))) { + var hsl = m.slice(1,4); + hsl[1] *= 0.01; + hsl[2] *= 0.01; + var rgb$4 = hsl2rgb_1(hsl); + rgb$4[3] = 1; + return rgb$4; + } + + // hsla(0,100%,50%,0.5) + if ((m = css.match(RE_HSLA))) { + var hsl$1 = m.slice(1,4); + hsl$1[1] *= 0.01; + hsl$1[2] *= 0.01; + var rgb$5 = hsl2rgb_1(hsl$1); + rgb$5[3] = +m[4]; // default alpha = 1 + return rgb$5; + } + }; + + css2rgb.test = function (s) { + return RE_RGB.test(s) || + RE_RGBA.test(s) || + RE_RGB_PCT.test(s) || + RE_RGBA_PCT.test(s) || + RE_HSL.test(s) || + RE_HSLA.test(s); + }; + + var css2rgb_1 = css2rgb; + + var type$3 = utils.type; + + + + + Color_1.prototype.css = function(mode) { + return rgb2css_1(this._rgb, mode); + }; + + chroma_1.css = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['css']) )); + }; + + input.format.css = css2rgb_1; + + input.autodetect.push({ + p: 5, + test: function (h) { + var rest = [], len = arguments.length - 1; + while ( len-- > 0 ) rest[ len ] = arguments[ len + 1 ]; + + if (!rest.length && type$3(h) === 'string' && css2rgb_1.test(h)) { + return 'css'; + } + } + }); + + var unpack$8 = utils.unpack; + + input.format.gl = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var rgb = unpack$8(args, 'rgba'); + rgb[0] *= 255; + rgb[1] *= 255; + rgb[2] *= 255; + return rgb; + }; + + chroma_1.gl = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['gl']) )); + }; + + Color_1.prototype.gl = function() { + var rgb = this._rgb; + return [rgb[0]/255, rgb[1]/255, rgb[2]/255, rgb[3]]; + }; + + var unpack$9 = utils.unpack; + + var rgb2hcg = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$9(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + var min = Math.min(r, g, b); + var max = Math.max(r, g, b); + var delta = max - min; + var c = delta * 100 / 255; + var _g = min / (255 - delta) * 100; + var h; + if (delta === 0) { + h = Number.NaN; + } else { + if (r === max) { h = (g - b) / delta; } + if (g === max) { h = 2+(b - r) / delta; } + if (b === max) { h = 4+(r - g) / delta; } + h *= 60; + if (h < 0) { h += 360; } + } + return [h, c, _g]; + }; + + var rgb2hcg_1 = rgb2hcg; + + var unpack$a = utils.unpack; + var floor = Math.floor; + + /* + * this is basically just HSV with some minor tweaks + * + * hue.. [0..360] + * chroma .. [0..1] + * grayness .. [0..1] + */ + + var hcg2rgb = function () { + var assign, assign$1, assign$2, assign$3, assign$4, assign$5; + + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + args = unpack$a(args, 'hcg'); + var h = args[0]; + var c = args[1]; + var _g = args[2]; + var r,g,b; + _g = _g * 255; + var _c = c * 255; + if (c === 0) { + r = g = b = _g; + } else { + if (h === 360) { h = 0; } + if (h > 360) { h -= 360; } + if (h < 0) { h += 360; } + h /= 60; + var i = floor(h); + var f = h - i; + var p = _g * (1 - c); + var q = p + _c * (1 - f); + var t = p + _c * f; + var v = p + _c; + switch (i) { + case 0: (assign = [v, t, p], r = assign[0], g = assign[1], b = assign[2]); break + case 1: (assign$1 = [q, v, p], r = assign$1[0], g = assign$1[1], b = assign$1[2]); break + case 2: (assign$2 = [p, v, t], r = assign$2[0], g = assign$2[1], b = assign$2[2]); break + case 3: (assign$3 = [p, q, v], r = assign$3[0], g = assign$3[1], b = assign$3[2]); break + case 4: (assign$4 = [t, p, v], r = assign$4[0], g = assign$4[1], b = assign$4[2]); break + case 5: (assign$5 = [v, p, q], r = assign$5[0], g = assign$5[1], b = assign$5[2]); break + } + } + return [r, g, b, args.length > 3 ? args[3] : 1]; + }; + + var hcg2rgb_1 = hcg2rgb; + + var unpack$b = utils.unpack; + var type$4 = utils.type; + + + + + + + Color_1.prototype.hcg = function() { + return rgb2hcg_1(this._rgb); + }; + + chroma_1.hcg = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hcg']) )); + }; + + input.format.hcg = hcg2rgb_1; + + input.autodetect.push({ + p: 1, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$b(args, 'hcg'); + if (type$4(args) === 'array' && args.length === 3) { + return 'hcg'; + } + } + }); + + var unpack$c = utils.unpack; + var last$4 = utils.last; + var round$3 = Math.round; + + var rgb2hex = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$c(args, 'rgba'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + var a = ref[3]; + var mode = last$4(args) || 'auto'; + if (a === undefined) { a = 1; } + if (mode === 'auto') { + mode = a < 1 ? 'rgba' : 'rgb'; + } + r = round$3(r); + g = round$3(g); + b = round$3(b); + var u = r << 16 | g << 8 | b; + var str = "000000" + u.toString(16); //#.toUpperCase(); + str = str.substr(str.length - 6); + var hxa = '0' + round$3(a * 255).toString(16); + hxa = hxa.substr(hxa.length - 2); + switch (mode.toLowerCase()) { + case 'rgba': return ("#" + str + hxa); + case 'argb': return ("#" + hxa + str); + default: return ("#" + str); + } + }; + + var rgb2hex_1 = rgb2hex; + + var RE_HEX = /^#?([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/; + var RE_HEXA = /^#?([A-Fa-f0-9]{8})$/; + + var hex2rgb = function (hex) { + if (hex.match(RE_HEX)) { + // remove optional leading # + if (hex.length === 4 || hex.length === 7) { + hex = hex.substr(1); + } + // expand short-notation to full six-digit + if (hex.length === 3) { + hex = hex.split(''); + hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2]; + } + var u = parseInt(hex, 16); + var r = u >> 16; + var g = u >> 8 & 0xFF; + var b = u & 0xFF; + return [r,g,b,1]; + } + + // match rgba hex format, eg #FF000077 + if (hex.match(RE_HEXA)) { + if (hex.length === 9) { + // remove optional leading # + hex = hex.substr(1); + } + var u$1 = parseInt(hex, 16); + var r$1 = u$1 >> 24 & 0xFF; + var g$1 = u$1 >> 16 & 0xFF; + var b$1 = u$1 >> 8 & 0xFF; + var a = Math.round((u$1 & 0xFF) / 0xFF * 100) / 100; + return [r$1,g$1,b$1,a]; + } + + // we used to check for css colors here + // if _input.css? and rgb = _input.css hex + // return rgb + + throw new Error(("unknown hex color: " + hex)); + }; + + var hex2rgb_1 = hex2rgb; + + var type$5 = utils.type; + + + + + Color_1.prototype.hex = function(mode) { + return rgb2hex_1(this._rgb, mode); + }; + + chroma_1.hex = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hex']) )); + }; + + input.format.hex = hex2rgb_1; + input.autodetect.push({ + p: 4, + test: function (h) { + var rest = [], len = arguments.length - 1; + while ( len-- > 0 ) rest[ len ] = arguments[ len + 1 ]; + + if (!rest.length && type$5(h) === 'string' && [3,4,6,7,8,9].includes(h.length)) { + return 'hex'; + } + } + }); + + var unpack$d = utils.unpack; + var TWOPI = utils.TWOPI; + var min = Math.min; + var sqrt = Math.sqrt; + var acos = Math.acos; + + var rgb2hsi = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + /* + borrowed from here: + http://hummer.stanford.edu/museinfo/doc/examples/humdrum/keyscape2/rgb2hsi.cpp + */ + var ref = unpack$d(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + r /= 255; + g /= 255; + b /= 255; + var h; + var min_ = min(r,g,b); + var i = (r+g+b) / 3; + var s = i > 0 ? 1 - min_/i : 0; + if (s === 0) { + h = NaN; + } else { + h = ((r-g)+(r-b)) / 2; + h /= sqrt((r-g)*(r-g) + (r-b)*(g-b)); + h = acos(h); + if (b > g) { + h = TWOPI - h; + } + h /= TWOPI; + } + return [h*360,s,i]; + }; + + var rgb2hsi_1 = rgb2hsi; + + var unpack$e = utils.unpack; + var limit$1 = utils.limit; + var TWOPI$1 = utils.TWOPI; + var PITHIRD = utils.PITHIRD; + var cos = Math.cos; + + /* + * hue [0..360] + * saturation [0..1] + * intensity [0..1] + */ + var hsi2rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + /* + borrowed from here: + http://hummer.stanford.edu/museinfo/doc/examples/humdrum/keyscape2/hsi2rgb.cpp + */ + args = unpack$e(args, 'hsi'); + var h = args[0]; + var s = args[1]; + var i = args[2]; + var r,g,b; + + if (isNaN(h)) { h = 0; } + if (isNaN(s)) { s = 0; } + // normalize hue + if (h > 360) { h -= 360; } + if (h < 0) { h += 360; } + h /= 360; + if (h < 1/3) { + b = (1-s)/3; + r = (1+s*cos(TWOPI$1*h)/cos(PITHIRD-TWOPI$1*h))/3; + g = 1 - (b+r); + } else if (h < 2/3) { + h -= 1/3; + r = (1-s)/3; + g = (1+s*cos(TWOPI$1*h)/cos(PITHIRD-TWOPI$1*h))/3; + b = 1 - (r+g); + } else { + h -= 2/3; + g = (1-s)/3; + b = (1+s*cos(TWOPI$1*h)/cos(PITHIRD-TWOPI$1*h))/3; + r = 1 - (g+b); + } + r = limit$1(i*r*3); + g = limit$1(i*g*3); + b = limit$1(i*b*3); + return [r*255, g*255, b*255, args.length > 3 ? args[3] : 1]; + }; + + var hsi2rgb_1 = hsi2rgb; + + var unpack$f = utils.unpack; + var type$6 = utils.type; + + + + + + + Color_1.prototype.hsi = function() { + return rgb2hsi_1(this._rgb); + }; + + chroma_1.hsi = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hsi']) )); + }; + + input.format.hsi = hsi2rgb_1; + + input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$f(args, 'hsi'); + if (type$6(args) === 'array' && args.length === 3) { + return 'hsi'; + } + } + }); + + var unpack$g = utils.unpack; + var type$7 = utils.type; + + + + + + + Color_1.prototype.hsl = function() { + return rgb2hsl_1(this._rgb); + }; + + chroma_1.hsl = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hsl']) )); + }; + + input.format.hsl = hsl2rgb_1; + + input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$g(args, 'hsl'); + if (type$7(args) === 'array' && args.length === 3) { + return 'hsl'; + } + } + }); + + var unpack$h = utils.unpack; + var min$1 = Math.min; + var max$1 = Math.max; + + /* + * supported arguments: + * - rgb2hsv(r,g,b) + * - rgb2hsv([r,g,b]) + * - rgb2hsv({r,g,b}) + */ + var rgb2hsl$1 = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$h(args, 'rgb'); + var r = args[0]; + var g = args[1]; + var b = args[2]; + var min_ = min$1(r, g, b); + var max_ = max$1(r, g, b); + var delta = max_ - min_; + var h,s,v; + v = max_ / 255.0; + if (max_ === 0) { + h = Number.NaN; + s = 0; + } else { + s = delta / max_; + if (r === max_) { h = (g - b) / delta; } + if (g === max_) { h = 2+(b - r) / delta; } + if (b === max_) { h = 4+(r - g) / delta; } + h *= 60; + if (h < 0) { h += 360; } + } + return [h, s, v] + }; + + var rgb2hsv = rgb2hsl$1; + + var unpack$i = utils.unpack; + var floor$1 = Math.floor; + + var hsv2rgb = function () { + var assign, assign$1, assign$2, assign$3, assign$4, assign$5; + + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + args = unpack$i(args, 'hsv'); + var h = args[0]; + var s = args[1]; + var v = args[2]; + var r,g,b; + v *= 255; + if (s === 0) { + r = g = b = v; + } else { + if (h === 360) { h = 0; } + if (h > 360) { h -= 360; } + if (h < 0) { h += 360; } + h /= 60; + + var i = floor$1(h); + var f = h - i; + var p = v * (1 - s); + var q = v * (1 - s * f); + var t = v * (1 - s * (1 - f)); + + switch (i) { + case 0: (assign = [v, t, p], r = assign[0], g = assign[1], b = assign[2]); break + case 1: (assign$1 = [q, v, p], r = assign$1[0], g = assign$1[1], b = assign$1[2]); break + case 2: (assign$2 = [p, v, t], r = assign$2[0], g = assign$2[1], b = assign$2[2]); break + case 3: (assign$3 = [p, q, v], r = assign$3[0], g = assign$3[1], b = assign$3[2]); break + case 4: (assign$4 = [t, p, v], r = assign$4[0], g = assign$4[1], b = assign$4[2]); break + case 5: (assign$5 = [v, p, q], r = assign$5[0], g = assign$5[1], b = assign$5[2]); break + } + } + return [r,g,b,args.length > 3?args[3]:1]; + }; + + var hsv2rgb_1 = hsv2rgb; + + var unpack$j = utils.unpack; + var type$8 = utils.type; + + + + + + + Color_1.prototype.hsv = function() { + return rgb2hsv(this._rgb); + }; + + chroma_1.hsv = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hsv']) )); + }; + + input.format.hsv = hsv2rgb_1; + + input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$j(args, 'hsv'); + if (type$8(args) === 'array' && args.length === 3) { + return 'hsv'; + } + } + }); + + var labConstants = { + // Corresponds roughly to RGB brighter/darker + Kn: 18, + + // D65 standard referent + Xn: 0.950470, + Yn: 1, + Zn: 1.088830, + + t0: 0.137931034, // 4 / 29 + t1: 0.206896552, // 6 / 29 + t2: 0.12841855, // 3 * t1 * t1 + t3: 0.008856452, // t1 * t1 * t1 + }; + + var unpack$k = utils.unpack; + var pow = Math.pow; + + var rgb2lab = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$k(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + var ref$1 = rgb2xyz(r,g,b); + var x = ref$1[0]; + var y = ref$1[1]; + var z = ref$1[2]; + var l = 116 * y - 16; + return [l < 0 ? 0 : l, 500 * (x - y), 200 * (y - z)]; + }; + + var rgb_xyz = function (r) { + if ((r /= 255) <= 0.04045) { return r / 12.92; } + return pow((r + 0.055) / 1.055, 2.4); + }; + + var xyz_lab = function (t) { + if (t > labConstants.t3) { return pow(t, 1 / 3); } + return t / labConstants.t2 + labConstants.t0; + }; + + var rgb2xyz = function (r,g,b) { + r = rgb_xyz(r); + g = rgb_xyz(g); + b = rgb_xyz(b); + var x = xyz_lab((0.4124564 * r + 0.3575761 * g + 0.1804375 * b) / labConstants.Xn); + var y = xyz_lab((0.2126729 * r + 0.7151522 * g + 0.0721750 * b) / labConstants.Yn); + var z = xyz_lab((0.0193339 * r + 0.1191920 * g + 0.9503041 * b) / labConstants.Zn); + return [x,y,z]; + }; + + var rgb2lab_1 = rgb2lab; + + var unpack$l = utils.unpack; + var pow$1 = Math.pow; + + /* + * L* [0..100] + * a [-100..100] + * b [-100..100] + */ + var lab2rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$l(args, 'lab'); + var l = args[0]; + var a = args[1]; + var b = args[2]; + var x,y,z, r,g,b_; + + y = (l + 16) / 116; + x = isNaN(a) ? y : y + a / 500; + z = isNaN(b) ? y : y - b / 200; + + y = labConstants.Yn * lab_xyz(y); + x = labConstants.Xn * lab_xyz(x); + z = labConstants.Zn * lab_xyz(z); + + r = xyz_rgb(3.2404542 * x - 1.5371385 * y - 0.4985314 * z); // D65 -> sRGB + g = xyz_rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z); + b_ = xyz_rgb(0.0556434 * x - 0.2040259 * y + 1.0572252 * z); + + return [r,g,b_,args.length > 3 ? args[3] : 1]; + }; + + var xyz_rgb = function (r) { + return 255 * (r <= 0.00304 ? 12.92 * r : 1.055 * pow$1(r, 1 / 2.4) - 0.055) + }; + + var lab_xyz = function (t) { + return t > labConstants.t1 ? t * t * t : labConstants.t2 * (t - labConstants.t0) + }; + + var lab2rgb_1 = lab2rgb; + + var unpack$m = utils.unpack; + var type$9 = utils.type; + + + + + + + Color_1.prototype.lab = function() { + return rgb2lab_1(this._rgb); + }; + + chroma_1.lab = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['lab']) )); + }; + + input.format.lab = lab2rgb_1; + + input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$m(args, 'lab'); + if (type$9(args) === 'array' && args.length === 3) { + return 'lab'; + } + } + }); + + var unpack$n = utils.unpack; + var RAD2DEG = utils.RAD2DEG; + var sqrt$1 = Math.sqrt; + var atan2 = Math.atan2; + var round$4 = Math.round; + + var lab2lch = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$n(args, 'lab'); + var l = ref[0]; + var a = ref[1]; + var b = ref[2]; + var c = sqrt$1(a * a + b * b); + var h = (atan2(b, a) * RAD2DEG + 360) % 360; + if (round$4(c*10000) === 0) { h = Number.NaN; } + return [l, c, h]; + }; + + var lab2lch_1 = lab2lch; + + var unpack$o = utils.unpack; + + + + var rgb2lch = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$o(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + var ref$1 = rgb2lab_1(r,g,b); + var l = ref$1[0]; + var a = ref$1[1]; + var b_ = ref$1[2]; + return lab2lch_1(l,a,b_); + }; + + var rgb2lch_1 = rgb2lch; + + var unpack$p = utils.unpack; + var DEG2RAD = utils.DEG2RAD; + var sin = Math.sin; + var cos$1 = Math.cos; + + var lch2lab = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + /* + Convert from a qualitative parameter h and a quantitative parameter l to a 24-bit pixel. + These formulas were invented by David Dalrymple to obtain maximum contrast without going + out of gamut if the parameters are in the range 0-1. + + A saturation multiplier was added by Gregor Aisch + */ + var ref = unpack$p(args, 'lch'); + var l = ref[0]; + var c = ref[1]; + var h = ref[2]; + if (isNaN(h)) { h = 0; } + h = h * DEG2RAD; + return [l, cos$1(h) * c, sin(h) * c] + }; + + var lch2lab_1 = lch2lab; + + var unpack$q = utils.unpack; + + + + var lch2rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$q(args, 'lch'); + var l = args[0]; + var c = args[1]; + var h = args[2]; + var ref = lch2lab_1 (l,c,h); + var L = ref[0]; + var a = ref[1]; + var b_ = ref[2]; + var ref$1 = lab2rgb_1 (L,a,b_); + var r = ref$1[0]; + var g = ref$1[1]; + var b = ref$1[2]; + return [r, g, b, args.length > 3 ? args[3] : 1]; + }; + + var lch2rgb_1 = lch2rgb; + + var unpack$r = utils.unpack; + + + var hcl2rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var hcl = unpack$r(args, 'hcl').reverse(); + return lch2rgb_1.apply(void 0, hcl); + }; + + var hcl2rgb_1 = hcl2rgb; + + var unpack$s = utils.unpack; + var type$a = utils.type; + + + + + + + Color_1.prototype.lch = function() { return rgb2lch_1(this._rgb); }; + Color_1.prototype.hcl = function() { return rgb2lch_1(this._rgb).reverse(); }; + + chroma_1.lch = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['lch']) )); + }; + chroma_1.hcl = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['hcl']) )); + }; + + input.format.lch = lch2rgb_1; + input.format.hcl = hcl2rgb_1; + + ['lch','hcl'].forEach(function (m) { return input.autodetect.push({ + p: 2, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$s(args, m); + if (type$a(args) === 'array' && args.length === 3) { + return m; + } + } + }); }); + + /** + X11 color names + + http://www.w3.org/TR/css3-color/#svg-color + */ + + var w3cx11 = { + aliceblue: '#f0f8ff', + antiquewhite: '#faebd7', + aqua: '#00ffff', + aquamarine: '#7fffd4', + azure: '#f0ffff', + beige: '#f5f5dc', + bisque: '#ffe4c4', + black: '#000000', + blanchedalmond: '#ffebcd', + blue: '#0000ff', + blueviolet: '#8a2be2', + brown: '#a52a2a', + burlywood: '#deb887', + cadetblue: '#5f9ea0', + chartreuse: '#7fff00', + chocolate: '#d2691e', + coral: '#ff7f50', + cornflower: '#6495ed', + cornflowerblue: '#6495ed', + cornsilk: '#fff8dc', + crimson: '#dc143c', + cyan: '#00ffff', + darkblue: '#00008b', + darkcyan: '#008b8b', + darkgoldenrod: '#b8860b', + darkgray: '#a9a9a9', + darkgreen: '#006400', + darkgrey: '#a9a9a9', + darkkhaki: '#bdb76b', + darkmagenta: '#8b008b', + darkolivegreen: '#556b2f', + darkorange: '#ff8c00', + darkorchid: '#9932cc', + darkred: '#8b0000', + darksalmon: '#e9967a', + darkseagreen: '#8fbc8f', + darkslateblue: '#483d8b', + darkslategray: '#2f4f4f', + darkslategrey: '#2f4f4f', + darkturquoise: '#00ced1', + darkviolet: '#9400d3', + deeppink: '#ff1493', + deepskyblue: '#00bfff', + dimgray: '#696969', + dimgrey: '#696969', + dodgerblue: '#1e90ff', + firebrick: '#b22222', + floralwhite: '#fffaf0', + forestgreen: '#228b22', + fuchsia: '#ff00ff', + gainsboro: '#dcdcdc', + ghostwhite: '#f8f8ff', + gold: '#ffd700', + goldenrod: '#daa520', + gray: '#808080', + green: '#008000', + greenyellow: '#adff2f', + grey: '#808080', + honeydew: '#f0fff0', + hotpink: '#ff69b4', + indianred: '#cd5c5c', + indigo: '#4b0082', + ivory: '#fffff0', + khaki: '#f0e68c', + laserlemon: '#ffff54', + lavender: '#e6e6fa', + lavenderblush: '#fff0f5', + lawngreen: '#7cfc00', + lemonchiffon: '#fffacd', + lightblue: '#add8e6', + lightcoral: '#f08080', + lightcyan: '#e0ffff', + lightgoldenrod: '#fafad2', + lightgoldenrodyellow: '#fafad2', + lightgray: '#d3d3d3', + lightgreen: '#90ee90', + lightgrey: '#d3d3d3', + lightpink: '#ffb6c1', + lightsalmon: '#ffa07a', + lightseagreen: '#20b2aa', + lightskyblue: '#87cefa', + lightslategray: '#778899', + lightslategrey: '#778899', + lightsteelblue: '#b0c4de', + lightyellow: '#ffffe0', + lime: '#00ff00', + limegreen: '#32cd32', + linen: '#faf0e6', + magenta: '#ff00ff', + maroon: '#800000', + maroon2: '#7f0000', + maroon3: '#b03060', + mediumaquamarine: '#66cdaa', + mediumblue: '#0000cd', + mediumorchid: '#ba55d3', + mediumpurple: '#9370db', + mediumseagreen: '#3cb371', + mediumslateblue: '#7b68ee', + mediumspringgreen: '#00fa9a', + mediumturquoise: '#48d1cc', + mediumvioletred: '#c71585', + midnightblue: '#191970', + mintcream: '#f5fffa', + mistyrose: '#ffe4e1', + moccasin: '#ffe4b5', + navajowhite: '#ffdead', + navy: '#000080', + oldlace: '#fdf5e6', + olive: '#808000', + olivedrab: '#6b8e23', + orange: '#ffa500', + orangered: '#ff4500', + orchid: '#da70d6', + palegoldenrod: '#eee8aa', + palegreen: '#98fb98', + paleturquoise: '#afeeee', + palevioletred: '#db7093', + papayawhip: '#ffefd5', + peachpuff: '#ffdab9', + peru: '#cd853f', + pink: '#ffc0cb', + plum: '#dda0dd', + powderblue: '#b0e0e6', + purple: '#800080', + purple2: '#7f007f', + purple3: '#a020f0', + rebeccapurple: '#663399', + red: '#ff0000', + rosybrown: '#bc8f8f', + royalblue: '#4169e1', + saddlebrown: '#8b4513', + salmon: '#fa8072', + sandybrown: '#f4a460', + seagreen: '#2e8b57', + seashell: '#fff5ee', + sienna: '#a0522d', + silver: '#c0c0c0', + skyblue: '#87ceeb', + slateblue: '#6a5acd', + slategray: '#708090', + slategrey: '#708090', + snow: '#fffafa', + springgreen: '#00ff7f', + steelblue: '#4682b4', + tan: '#d2b48c', + teal: '#008080', + thistle: '#d8bfd8', + tomato: '#ff6347', + turquoise: '#40e0d0', + violet: '#ee82ee', + wheat: '#f5deb3', + white: '#ffffff', + whitesmoke: '#f5f5f5', + yellow: '#ffff00', + yellowgreen: '#9acd32' + }; + + var w3cx11_1 = w3cx11; + + var type$b = utils.type; + + + + + + Color_1.prototype.name = function() { + var hex = rgb2hex_1(this._rgb, 'rgb'); + for (var i = 0, list = Object.keys(w3cx11_1); i < list.length; i += 1) { + var n = list[i]; + + if (w3cx11_1[n] === hex) { return n.toLowerCase(); } + } + return hex; + }; + + input.format.named = function (name) { + name = name.toLowerCase(); + if (w3cx11_1[name]) { return hex2rgb_1(w3cx11_1[name]); } + throw new Error('unknown color name: '+name); + }; + + input.autodetect.push({ + p: 5, + test: function (h) { + var rest = [], len = arguments.length - 1; + while ( len-- > 0 ) rest[ len ] = arguments[ len + 1 ]; + + if (!rest.length && type$b(h) === 'string' && w3cx11_1[h.toLowerCase()]) { + return 'named'; + } + } + }); + + var unpack$t = utils.unpack; + + var rgb2num = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var ref = unpack$t(args, 'rgb'); + var r = ref[0]; + var g = ref[1]; + var b = ref[2]; + return (r << 16) + (g << 8) + b; + }; + + var rgb2num_1 = rgb2num; + + var type$c = utils.type; + + var num2rgb = function (num) { + if (type$c(num) == "number" && num >= 0 && num <= 0xFFFFFF) { + var r = num >> 16; + var g = (num >> 8) & 0xFF; + var b = num & 0xFF; + return [r,g,b,1]; + } + throw new Error("unknown num color: "+num); + }; + + var num2rgb_1 = num2rgb; + + var type$d = utils.type; + + + + Color_1.prototype.num = function() { + return rgb2num_1(this._rgb); + }; + + chroma_1.num = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['num']) )); + }; + + input.format.num = num2rgb_1; + + input.autodetect.push({ + p: 5, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + if (args.length === 1 && type$d(args[0]) === 'number' && args[0] >= 0 && args[0] <= 0xFFFFFF) { + return 'num'; + } + } + }); + + var unpack$u = utils.unpack; + var type$e = utils.type; + var round$5 = Math.round; + + Color_1.prototype.rgb = function(rnd) { + if ( rnd === void 0 ) rnd=true; + + if (rnd === false) { return this._rgb.slice(0,3); } + return this._rgb.slice(0,3).map(round$5); + }; + + Color_1.prototype.rgba = function(rnd) { + if ( rnd === void 0 ) rnd=true; + + return this._rgb.slice(0,4).map(function (v,i) { + return i<3 ? (rnd === false ? v : round$5(v)) : v; + }); + }; + + chroma_1.rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['rgb']) )); + }; + + input.format.rgb = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var rgba = unpack$u(args, 'rgba'); + if (rgba[3] === undefined) { rgba[3] = 1; } + return rgba; + }; + + input.autodetect.push({ + p: 3, + test: function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + args = unpack$u(args, 'rgba'); + if (type$e(args) === 'array' && (args.length === 3 || + args.length === 4 && type$e(args[3]) == 'number' && args[3] >= 0 && args[3] <= 1)) { + return 'rgb'; + } + } + }); + + /* + * Based on implementation by Neil Bartlett + * https://github.com/neilbartlett/color-temperature + */ + + var log = Math.log; + + var temperature2rgb = function (kelvin) { + var temp = kelvin / 100; + var r,g,b; + if (temp < 66) { + r = 255; + g = -155.25485562709179 - 0.44596950469579133 * (g = temp-2) + 104.49216199393888 * log(g); + b = temp < 20 ? 0 : -254.76935184120902 + 0.8274096064007395 * (b = temp-10) + 115.67994401066147 * log(b); + } else { + r = 351.97690566805693 + 0.114206453784165 * (r = temp-55) - 40.25366309332127 * log(r); + g = 325.4494125711974 + 0.07943456536662342 * (g = temp-50) - 28.0852963507957 * log(g); + b = 255; + } + return [r,g,b,1]; + }; + + var temperature2rgb_1 = temperature2rgb; + + /* + * Based on implementation by Neil Bartlett + * https://github.com/neilbartlett/color-temperature + **/ + + + var unpack$v = utils.unpack; + var round$6 = Math.round; + + var rgb2temperature = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var rgb = unpack$v(args, 'rgb'); + var r = rgb[0], b = rgb[2]; + var minTemp = 1000; + var maxTemp = 40000; + var eps = 0.4; + var temp; + while (maxTemp - minTemp > eps) { + temp = (maxTemp + minTemp) * 0.5; + var rgb$1 = temperature2rgb_1(temp); + if ((rgb$1[2] / rgb$1[0]) >= (b / r)) { + maxTemp = temp; + } else { + minTemp = temp; + } + } + return round$6(temp); + }; + + var rgb2temperature_1 = rgb2temperature; + + Color_1.prototype.temp = + Color_1.prototype.kelvin = + Color_1.prototype.temperature = function() { + return rgb2temperature_1(this._rgb); + }; + + chroma_1.temp = + chroma_1.kelvin = + chroma_1.temperature = function () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return new (Function.prototype.bind.apply( Color_1, [ null ].concat( args, ['temp']) )); + }; + + input.format.temp = + input.format.kelvin = + input.format.temperature = temperature2rgb_1; + + var type$f = utils.type; + + Color_1.prototype.alpha = function(a, mutate) { + if ( mutate === void 0 ) mutate=false; + + if (a !== undefined && type$f(a) === 'number') { + if (mutate) { + this._rgb[3] = a; + return this; + } + return new Color_1([this._rgb[0], this._rgb[1], this._rgb[2], a], 'rgb'); + } + return this._rgb[3]; + }; + + Color_1.prototype.clipped = function() { + return this._rgb._clipped || false; + }; + + Color_1.prototype.darken = function(amount) { + if ( amount === void 0 ) amount=1; + + var me = this; + var lab = me.lab(); + lab[0] -= labConstants.Kn * amount; + return new Color_1(lab, 'lab').alpha(me.alpha(), true); + }; + + Color_1.prototype.brighten = function(amount) { + if ( amount === void 0 ) amount=1; + + return this.darken(-amount); + }; + + Color_1.prototype.darker = Color_1.prototype.darken; + Color_1.prototype.brighter = Color_1.prototype.brighten; + + Color_1.prototype.get = function(mc) { + var ref = mc.split('.'); + var mode = ref[0]; + var channel = ref[1]; + var src = this[mode](); + if (channel) { + var i = mode.indexOf(channel); + if (i > -1) { return src[i]; } + throw new Error(("unknown channel " + channel + " in mode " + mode)); + } else { + return src; + } + }; + + var type$g = utils.type; + var pow$2 = Math.pow; + + var EPS = 1e-7; + var MAX_ITER = 20; + + Color_1.prototype.luminance = function(lum) { + if (lum !== undefined && type$g(lum) === 'number') { + if (lum === 0) { + // return pure black + return new Color_1([0,0,0,this._rgb[3]], 'rgb'); + } + if (lum === 1) { + // return pure white + return new Color_1([255,255,255,this._rgb[3]], 'rgb'); + } + // compute new color using... + var cur_lum = this.luminance(); + var mode = 'rgb'; + var max_iter = MAX_ITER; + + var test = function (low, high) { + var mid = low.interpolate(high, 0.5, mode); + var lm = mid.luminance(); + if (Math.abs(lum - lm) < EPS || !max_iter--) { + // close enough + return mid; + } + return lm > lum ? test(low, mid) : test(mid, high); + }; + + var rgb = (cur_lum > lum ? test(new Color_1([0,0,0]), this) : test(this, new Color_1([255,255,255]))).rgb(); + return new Color_1(rgb.concat( [this._rgb[3]])); + } + return rgb2luminance.apply(void 0, (this._rgb).slice(0,3)); + }; + + + var rgb2luminance = function (r,g,b) { + // relative luminance + // see http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef + r = luminance_x(r); + g = luminance_x(g); + b = luminance_x(b); + return 0.2126 * r + 0.7152 * g + 0.0722 * b; + }; + + var luminance_x = function (x) { + x /= 255; + return x <= 0.03928 ? x/12.92 : pow$2((x+0.055)/1.055, 2.4); + }; + + var interpolator = {}; + + var type$h = utils.type; + + + var mix = function (col1, col2, f) { + if ( f === void 0 ) f=0.5; + var rest = [], len = arguments.length - 3; + while ( len-- > 0 ) rest[ len ] = arguments[ len + 3 ]; + + var mode = rest[0] || 'lrgb'; + if (!interpolator[mode] && !rest.length) { + // fall back to the first supported mode + mode = Object.keys(interpolator)[0]; + } + if (!interpolator[mode]) { + throw new Error(("interpolation mode " + mode + " is not defined")); + } + if (type$h(col1) !== 'object') { col1 = new Color_1(col1); } + if (type$h(col2) !== 'object') { col2 = new Color_1(col2); } + return interpolator[mode](col1, col2, f) + .alpha(col1.alpha() + f * (col2.alpha() - col1.alpha())); + }; + + Color_1.prototype.mix = + Color_1.prototype.interpolate = function(col2, f) { + if ( f === void 0 ) f=0.5; + var rest = [], len = arguments.length - 2; + while ( len-- > 0 ) rest[ len ] = arguments[ len + 2 ]; + + return mix.apply(void 0, [ this, col2, f ].concat( rest )); + }; + + Color_1.prototype.premultiply = function(mutate) { + if ( mutate === void 0 ) mutate=false; + + var rgb = this._rgb; + var a = rgb[3]; + if (mutate) { + this._rgb = [rgb[0]*a, rgb[1]*a, rgb[2]*a, a]; + return this; + } else { + return new Color_1([rgb[0]*a, rgb[1]*a, rgb[2]*a, a], 'rgb'); + } + }; + + Color_1.prototype.saturate = function(amount) { + if ( amount === void 0 ) amount=1; + + var me = this; + var lch = me.lch(); + lch[1] += labConstants.Kn * amount; + if (lch[1] < 0) { lch[1] = 0; } + return new Color_1(lch, 'lch').alpha(me.alpha(), true); + }; + + Color_1.prototype.desaturate = function(amount) { + if ( amount === void 0 ) amount=1; + + return this.saturate(-amount); + }; + + var type$i = utils.type; + + Color_1.prototype.set = function(mc, value, mutate) { + if ( mutate === void 0 ) mutate=false; + + var ref = mc.split('.'); + var mode = ref[0]; + var channel = ref[1]; + var src = this[mode](); + if (channel) { + var i = mode.indexOf(channel); + if (i > -1) { + if (type$i(value) == 'string') { + switch(value.charAt(0)) { + case '+': src[i] += +value; break; + case '-': src[i] += +value; break; + case '*': src[i] *= +(value.substr(1)); break; + case '/': src[i] /= +(value.substr(1)); break; + default: src[i] = +value; + } + } else if (type$i(value) === 'number') { + src[i] = value; + } else { + throw new Error("unsupported value for Color.set"); + } + var out = new Color_1(src, mode); + if (mutate) { + this._rgb = out._rgb; + return this; + } + return out; + } + throw new Error(("unknown channel " + channel + " in mode " + mode)); + } else { + return src; + } + }; + + var rgb$1 = function (col1, col2, f) { + var xyz0 = col1._rgb; + var xyz1 = col2._rgb; + return new Color_1( + xyz0[0] + f * (xyz1[0]-xyz0[0]), + xyz0[1] + f * (xyz1[1]-xyz0[1]), + xyz0[2] + f * (xyz1[2]-xyz0[2]), + 'rgb' + ) + }; + + // register interpolator + interpolator.rgb = rgb$1; + + var sqrt$2 = Math.sqrt; + var pow$3 = Math.pow; + + var lrgb = function (col1, col2, f) { + var ref = col1._rgb; + var x1 = ref[0]; + var y1 = ref[1]; + var z1 = ref[2]; + var ref$1 = col2._rgb; + var x2 = ref$1[0]; + var y2 = ref$1[1]; + var z2 = ref$1[2]; + return new Color_1( + sqrt$2(pow$3(x1,2) * (1-f) + pow$3(x2,2) * f), + sqrt$2(pow$3(y1,2) * (1-f) + pow$3(y2,2) * f), + sqrt$2(pow$3(z1,2) * (1-f) + pow$3(z2,2) * f), + 'rgb' + ) + }; + + // register interpolator + interpolator.lrgb = lrgb; + + var lab$1 = function (col1, col2, f) { + var xyz0 = col1.lab(); + var xyz1 = col2.lab(); + return new Color_1( + xyz0[0] + f * (xyz1[0]-xyz0[0]), + xyz0[1] + f * (xyz1[1]-xyz0[1]), + xyz0[2] + f * (xyz1[2]-xyz0[2]), + 'lab' + ) + }; + + // register interpolator + interpolator.lab = lab$1; + + var _hsx = function (col1, col2, f, m) { + var assign, assign$1; + + var xyz0, xyz1; + if (m === 'hsl') { + xyz0 = col1.hsl(); + xyz1 = col2.hsl(); + } else if (m === 'hsv') { + xyz0 = col1.hsv(); + xyz1 = col2.hsv(); + } else if (m === 'hcg') { + xyz0 = col1.hcg(); + xyz1 = col2.hcg(); + } else if (m === 'hsi') { + xyz0 = col1.hsi(); + xyz1 = col2.hsi(); + } else if (m === 'lch' || m === 'hcl') { + m = 'hcl'; + xyz0 = col1.hcl(); + xyz1 = col2.hcl(); + } + + var hue0, hue1, sat0, sat1, lbv0, lbv1; + if (m.substr(0, 1) === 'h') { + (assign = xyz0, hue0 = assign[0], sat0 = assign[1], lbv0 = assign[2]); + (assign$1 = xyz1, hue1 = assign$1[0], sat1 = assign$1[1], lbv1 = assign$1[2]); + } + + var sat, hue, lbv, dh; + + if (!isNaN(hue0) && !isNaN(hue1)) { + // both colors have hue + if (hue1 > hue0 && hue1 - hue0 > 180) { + dh = hue1-(hue0+360); + } else if (hue1 < hue0 && hue0 - hue1 > 180) { + dh = hue1+360-hue0; + } else{ + dh = hue1 - hue0; + } + hue = hue0 + f * dh; + } else if (!isNaN(hue0)) { + hue = hue0; + if ((lbv1 == 1 || lbv1 == 0) && m != 'hsv') { sat = sat0; } + } else if (!isNaN(hue1)) { + hue = hue1; + if ((lbv0 == 1 || lbv0 == 0) && m != 'hsv') { sat = sat1; } + } else { + hue = Number.NaN; + } + + if (sat === undefined) { sat = sat0 + f * (sat1 - sat0); } + lbv = lbv0 + f * (lbv1-lbv0); + return new Color_1([hue, sat, lbv], m); + }; + + var lch$1 = function (col1, col2, f) { + return _hsx(col1, col2, f, 'lch'); + }; + + // register interpolator + interpolator.lch = lch$1; + interpolator.hcl = lch$1; + + var num$1 = function (col1, col2, f) { + var c1 = col1.num(); + var c2 = col2.num(); + return new Color_1(c1 + f * (c2-c1), 'num') + }; + + // register interpolator + interpolator.num = num$1; + + var hcg$1 = function (col1, col2, f) { + return _hsx(col1, col2, f, 'hcg'); + }; + + // register interpolator + interpolator.hcg = hcg$1; + + var hsi$1 = function (col1, col2, f) { + return _hsx(col1, col2, f, 'hsi'); + }; + + // register interpolator + interpolator.hsi = hsi$1; + + var hsl$1 = function (col1, col2, f) { + return _hsx(col1, col2, f, 'hsl'); + }; + + // register interpolator + interpolator.hsl = hsl$1; + + var hsv$1 = function (col1, col2, f) { + return _hsx(col1, col2, f, 'hsv'); + }; + + // register interpolator + interpolator.hsv = hsv$1; + + var clip_rgb$2 = utils.clip_rgb; + var pow$4 = Math.pow; + var sqrt$3 = Math.sqrt; + var PI$1 = Math.PI; + var cos$2 = Math.cos; + var sin$1 = Math.sin; + var atan2$1 = Math.atan2; + + var average = function (colors, mode) { + if ( mode === void 0 ) mode='lrgb'; + + var l = colors.length; + // convert colors to Color objects + colors = colors.map(function (c) { return new Color_1(c); }); + if (mode === 'lrgb') { + return _average_lrgb(colors) + } + var first = colors.shift(); + var xyz = first.get(mode); + var cnt = []; + var dx = 0; + var dy = 0; + // initial color + for (var i=0; i{steps}\r\n'{steps.join(`', '`)}'\r\n['{steps.join(`', '`)}']\r\n{steps.join('\\n')}\r\n[{steps.map(c => '0x'+c.substr(1)).join(`,`)}]\r\n\r\nimport { scaleThreshold } from 'd3-scale';\r\n\r\nfunction palette(min, max) {\r\n const d = (max-min)/{steps.length};\r\n return = scaleThreshold()\r\n .range(['{steps.join(`', '`)}'])\r\n .domain([{steps.slice(1).map((v,i) => `min + d*${i+1}`)}]);\r\n}\r\n","export default function(a, b) {\n return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;\n}\n","import ascending from \"./ascending.js\";\n\nexport default function(compare) {\n if (compare.length === 1) compare = ascendingComparator(compare);\n return {\n left: function(a, x, lo, hi) {\n if (lo == null) lo = 0;\n if (hi == null) hi = a.length;\n while (lo < hi) {\n var mid = lo + hi >>> 1;\n if (compare(a[mid], x) < 0) lo = mid + 1;\n else hi = mid;\n }\n return lo;\n },\n right: function(a, x, lo, hi) {\n if (lo == null) lo = 0;\n if (hi == null) hi = a.length;\n while (lo < hi) {\n var mid = lo + hi >>> 1;\n if (compare(a[mid], x) > 0) hi = mid;\n else lo = mid + 1;\n }\n return lo;\n }\n };\n}\n\nfunction ascendingComparator(f) {\n return function(d, x) {\n return ascending(f(d), x);\n };\n}\n","import ascending from \"./ascending.js\";\nimport bisector from \"./bisector.js\";\n\nvar ascendingBisect = bisector(ascending);\nexport var bisectRight = ascendingBisect.right;\nexport var bisectLeft = ascendingBisect.left;\nexport default bisectRight;\n","export default function(values, valueof) {\n let min;\n let max;\n if (valueof === undefined) {\n for (const value of values) {\n if (value != null) {\n if (min === undefined) {\n if (value >= value) min = max = value;\n } else {\n if (min > value) min = value;\n if (max < value) max = value;\n }\n }\n }\n } else {\n let index = -1;\n for (let value of values) {\n if ((value = valueof(value, ++index, values)) != null) {\n if (min === undefined) {\n if (value >= value) min = max = value;\n } else {\n if (min > value) min = value;\n if (max < value) max = value;\n }\n }\n }\n }\n return [min, max];\n}\n","var e10 = Math.sqrt(50),\n e5 = Math.sqrt(10),\n e2 = Math.sqrt(2);\n\nexport default function(start, stop, count) {\n var reverse,\n i = -1,\n n,\n ticks,\n step;\n\n stop = +stop, start = +start, count = +count;\n if (start === stop && count > 0) return [start];\n if (reverse = stop < start) n = start, start = stop, stop = n;\n if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return [];\n\n if (step > 0) {\n start = Math.ceil(start / step);\n stop = Math.floor(stop / step);\n ticks = new Array(n = Math.ceil(stop - start + 1));\n while (++i < n) ticks[i] = (start + i) * step;\n } else {\n start = Math.floor(start * step);\n stop = Math.ceil(stop * step);\n ticks = new Array(n = Math.ceil(start - stop + 1));\n while (++i < n) ticks[i] = (start - i) / step;\n }\n\n if (reverse) ticks.reverse();\n\n return ticks;\n}\n\nexport function tickIncrement(start, stop, count) {\n var step = (stop - start) / Math.max(0, count),\n power = Math.floor(Math.log(step) / Math.LN10),\n error = step / Math.pow(10, power);\n return power >= 0\n ? (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1) * Math.pow(10, power)\n : -Math.pow(10, -power) / (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1);\n}\n\nexport function tickStep(start, stop, count) {\n var step0 = Math.abs(stop - start) / Math.max(0, count),\n step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)),\n error = step0 / step1;\n if (error >= e10) step1 *= 10;\n else if (error >= e5) step1 *= 5;\n else if (error >= e2) step1 *= 2;\n return stop < start ? -step1 : step1;\n}\n","export function initRange(domain, range) {\n switch (arguments.length) {\n case 0: break;\n case 1: this.range(domain); break;\n default: this.range(range).domain(domain); break;\n }\n return this;\n}\n\nexport function initInterpolator(domain, interpolator) {\n switch (arguments.length) {\n case 0: break;\n case 1: this.interpolator(domain); break;\n default: this.interpolator(interpolator).domain(domain); break;\n }\n return this;\n}\n","export default function(constructor, factory, prototype) {\n constructor.prototype = factory.prototype = prototype;\n prototype.constructor = constructor;\n}\n\nexport function extend(parent, definition) {\n var prototype = Object.create(parent.prototype);\n for (var key in definition) prototype[key] = definition[key];\n return prototype;\n}\n","import define, {extend} from \"./define\";\n\nexport function Color() {}\n\nexport var darker = 0.7;\nexport var brighter = 1 / darker;\n\nvar reI = \"\\\\s*([+-]?\\\\d+)\\\\s*\",\n reN = \"\\\\s*([+-]?\\\\d*\\\\.?\\\\d+(?:[eE][+-]?\\\\d+)?)\\\\s*\",\n reP = \"\\\\s*([+-]?\\\\d*\\\\.?\\\\d+(?:[eE][+-]?\\\\d+)?)%\\\\s*\",\n reHex3 = /^#([0-9a-f]{3})$/,\n reHex6 = /^#([0-9a-f]{6})$/,\n reRgbInteger = new RegExp(\"^rgb\\\\(\" + [reI, reI, reI] + \"\\\\)$\"),\n reRgbPercent = new RegExp(\"^rgb\\\\(\" + [reP, reP, reP] + \"\\\\)$\"),\n reRgbaInteger = new RegExp(\"^rgba\\\\(\" + [reI, reI, reI, reN] + \"\\\\)$\"),\n reRgbaPercent = new RegExp(\"^rgba\\\\(\" + [reP, reP, reP, reN] + \"\\\\)$\"),\n reHslPercent = new RegExp(\"^hsl\\\\(\" + [reN, reP, reP] + \"\\\\)$\"),\n reHslaPercent = new RegExp(\"^hsla\\\\(\" + [reN, reP, reP, reN] + \"\\\\)$\");\n\nvar named = {\n aliceblue: 0xf0f8ff,\n antiquewhite: 0xfaebd7,\n aqua: 0x00ffff,\n aquamarine: 0x7fffd4,\n azure: 0xf0ffff,\n beige: 0xf5f5dc,\n bisque: 0xffe4c4,\n black: 0x000000,\n blanchedalmond: 0xffebcd,\n blue: 0x0000ff,\n blueviolet: 0x8a2be2,\n brown: 0xa52a2a,\n burlywood: 0xdeb887,\n cadetblue: 0x5f9ea0,\n chartreuse: 0x7fff00,\n chocolate: 0xd2691e,\n coral: 0xff7f50,\n cornflowerblue: 0x6495ed,\n cornsilk: 0xfff8dc,\n crimson: 0xdc143c,\n cyan: 0x00ffff,\n darkblue: 0x00008b,\n darkcyan: 0x008b8b,\n darkgoldenrod: 0xb8860b,\n darkgray: 0xa9a9a9,\n darkgreen: 0x006400,\n darkgrey: 0xa9a9a9,\n darkkhaki: 0xbdb76b,\n darkmagenta: 0x8b008b,\n darkolivegreen: 0x556b2f,\n darkorange: 0xff8c00,\n darkorchid: 0x9932cc,\n darkred: 0x8b0000,\n darksalmon: 0xe9967a,\n darkseagreen: 0x8fbc8f,\n darkslateblue: 0x483d8b,\n darkslategray: 0x2f4f4f,\n darkslategrey: 0x2f4f4f,\n darkturquoise: 0x00ced1,\n darkviolet: 0x9400d3,\n deeppink: 0xff1493,\n deepskyblue: 0x00bfff,\n dimgray: 0x696969,\n dimgrey: 0x696969,\n dodgerblue: 0x1e90ff,\n firebrick: 0xb22222,\n floralwhite: 0xfffaf0,\n forestgreen: 0x228b22,\n fuchsia: 0xff00ff,\n gainsboro: 0xdcdcdc,\n ghostwhite: 0xf8f8ff,\n gold: 0xffd700,\n goldenrod: 0xdaa520,\n gray: 0x808080,\n green: 0x008000,\n greenyellow: 0xadff2f,\n grey: 0x808080,\n honeydew: 0xf0fff0,\n hotpink: 0xff69b4,\n indianred: 0xcd5c5c,\n indigo: 0x4b0082,\n ivory: 0xfffff0,\n khaki: 0xf0e68c,\n lavender: 0xe6e6fa,\n lavenderblush: 0xfff0f5,\n lawngreen: 0x7cfc00,\n lemonchiffon: 0xfffacd,\n lightblue: 0xadd8e6,\n lightcoral: 0xf08080,\n lightcyan: 0xe0ffff,\n lightgoldenrodyellow: 0xfafad2,\n lightgray: 0xd3d3d3,\n lightgreen: 0x90ee90,\n lightgrey: 0xd3d3d3,\n lightpink: 0xffb6c1,\n lightsalmon: 0xffa07a,\n lightseagreen: 0x20b2aa,\n lightskyblue: 0x87cefa,\n lightslategray: 0x778899,\n lightslategrey: 0x778899,\n lightsteelblue: 0xb0c4de,\n lightyellow: 0xffffe0,\n lime: 0x00ff00,\n limegreen: 0x32cd32,\n linen: 0xfaf0e6,\n magenta: 0xff00ff,\n maroon: 0x800000,\n mediumaquamarine: 0x66cdaa,\n mediumblue: 0x0000cd,\n mediumorchid: 0xba55d3,\n mediumpurple: 0x9370db,\n mediumseagreen: 0x3cb371,\n mediumslateblue: 0x7b68ee,\n mediumspringgreen: 0x00fa9a,\n mediumturquoise: 0x48d1cc,\n mediumvioletred: 0xc71585,\n midnightblue: 0x191970,\n mintcream: 0xf5fffa,\n mistyrose: 0xffe4e1,\n moccasin: 0xffe4b5,\n navajowhite: 0xffdead,\n navy: 0x000080,\n oldlace: 0xfdf5e6,\n olive: 0x808000,\n olivedrab: 0x6b8e23,\n orange: 0xffa500,\n orangered: 0xff4500,\n orchid: 0xda70d6,\n palegoldenrod: 0xeee8aa,\n palegreen: 0x98fb98,\n paleturquoise: 0xafeeee,\n palevioletred: 0xdb7093,\n papayawhip: 0xffefd5,\n peachpuff: 0xffdab9,\n peru: 0xcd853f,\n pink: 0xffc0cb,\n plum: 0xdda0dd,\n powderblue: 0xb0e0e6,\n purple: 0x800080,\n rebeccapurple: 0x663399,\n red: 0xff0000,\n rosybrown: 0xbc8f8f,\n royalblue: 0x4169e1,\n saddlebrown: 0x8b4513,\n salmon: 0xfa8072,\n sandybrown: 0xf4a460,\n seagreen: 0x2e8b57,\n seashell: 0xfff5ee,\n sienna: 0xa0522d,\n silver: 0xc0c0c0,\n skyblue: 0x87ceeb,\n slateblue: 0x6a5acd,\n slategray: 0x708090,\n slategrey: 0x708090,\n snow: 0xfffafa,\n springgreen: 0x00ff7f,\n steelblue: 0x4682b4,\n tan: 0xd2b48c,\n teal: 0x008080,\n thistle: 0xd8bfd8,\n tomato: 0xff6347,\n turquoise: 0x40e0d0,\n violet: 0xee82ee,\n wheat: 0xf5deb3,\n white: 0xffffff,\n whitesmoke: 0xf5f5f5,\n yellow: 0xffff00,\n yellowgreen: 0x9acd32\n};\n\ndefine(Color, color, {\n displayable: function() {\n return this.rgb().displayable();\n },\n hex: function() {\n return this.rgb().hex();\n },\n toString: function() {\n return this.rgb() + \"\";\n }\n});\n\nexport default function color(format) {\n var m;\n format = (format + \"\").trim().toLowerCase();\n return (m = reHex3.exec(format)) ? (m = parseInt(m[1], 16), new Rgb((m >> 8 & 0xf) | (m >> 4 & 0x0f0), (m >> 4 & 0xf) | (m & 0xf0), ((m & 0xf) << 4) | (m & 0xf), 1)) // #f00\n : (m = reHex6.exec(format)) ? rgbn(parseInt(m[1], 16)) // #ff0000\n : (m = reRgbInteger.exec(format)) ? new Rgb(m[1], m[2], m[3], 1) // rgb(255, 0, 0)\n : (m = reRgbPercent.exec(format)) ? new Rgb(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, 1) // rgb(100%, 0%, 0%)\n : (m = reRgbaInteger.exec(format)) ? rgba(m[1], m[2], m[3], m[4]) // rgba(255, 0, 0, 1)\n : (m = reRgbaPercent.exec(format)) ? rgba(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, m[4]) // rgb(100%, 0%, 0%, 1)\n : (m = reHslPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, 1) // hsl(120, 50%, 50%)\n : (m = reHslaPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, m[4]) // hsla(120, 50%, 50%, 1)\n : named.hasOwnProperty(format) ? rgbn(named[format])\n : format === \"transparent\" ? new Rgb(NaN, NaN, NaN, 0)\n : null;\n}\n\nfunction rgbn(n) {\n return new Rgb(n >> 16 & 0xff, n >> 8 & 0xff, n & 0xff, 1);\n}\n\nfunction rgba(r, g, b, a) {\n if (a <= 0) r = g = b = NaN;\n return new Rgb(r, g, b, a);\n}\n\nexport function rgbConvert(o) {\n if (!(o instanceof Color)) o = color(o);\n if (!o) return new Rgb;\n o = o.rgb();\n return new Rgb(o.r, o.g, o.b, o.opacity);\n}\n\nexport function rgb(r, g, b, opacity) {\n return arguments.length === 1 ? rgbConvert(r) : new Rgb(r, g, b, opacity == null ? 1 : opacity);\n}\n\nexport function Rgb(r, g, b, opacity) {\n this.r = +r;\n this.g = +g;\n this.b = +b;\n this.opacity = +opacity;\n}\n\ndefine(Rgb, rgb, extend(Color, {\n brighter: function(k) {\n k = k == null ? brighter : Math.pow(brighter, k);\n return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);\n },\n darker: function(k) {\n k = k == null ? darker : Math.pow(darker, k);\n return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);\n },\n rgb: function() {\n return this;\n },\n displayable: function() {\n return (0 <= this.r && this.r <= 255)\n && (0 <= this.g && this.g <= 255)\n && (0 <= this.b && this.b <= 255)\n && (0 <= this.opacity && this.opacity <= 1);\n },\n hex: function() {\n return \"#\" + hex(this.r) + hex(this.g) + hex(this.b);\n },\n toString: function() {\n var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));\n return (a === 1 ? \"rgb(\" : \"rgba(\")\n + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + \", \"\n + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + \", \"\n + Math.max(0, Math.min(255, Math.round(this.b) || 0))\n + (a === 1 ? \")\" : \", \" + a + \")\");\n }\n}));\n\nfunction hex(value) {\n value = Math.max(0, Math.min(255, Math.round(value) || 0));\n return (value < 16 ? \"0\" : \"\") + value.toString(16);\n}\n\nfunction hsla(h, s, l, a) {\n if (a <= 0) h = s = l = NaN;\n else if (l <= 0 || l >= 1) h = s = NaN;\n else if (s <= 0) h = NaN;\n return new Hsl(h, s, l, a);\n}\n\nexport function hslConvert(o) {\n if (o instanceof Hsl) return new Hsl(o.h, o.s, o.l, o.opacity);\n if (!(o instanceof Color)) o = color(o);\n if (!o) return new Hsl;\n if (o instanceof Hsl) return o;\n o = o.rgb();\n var r = o.r / 255,\n g = o.g / 255,\n b = o.b / 255,\n min = Math.min(r, g, b),\n max = Math.max(r, g, b),\n h = NaN,\n s = max - min,\n l = (max + min) / 2;\n if (s) {\n if (r === max) h = (g - b) / s + (g < b) * 6;\n else if (g === max) h = (b - r) / s + 2;\n else h = (r - g) / s + 4;\n s /= l < 0.5 ? max + min : 2 - max - min;\n h *= 60;\n } else {\n s = l > 0 && l < 1 ? 0 : h;\n }\n return new Hsl(h, s, l, o.opacity);\n}\n\nexport function hsl(h, s, l, opacity) {\n return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity);\n}\n\nfunction Hsl(h, s, l, opacity) {\n this.h = +h;\n this.s = +s;\n this.l = +l;\n this.opacity = +opacity;\n}\n\ndefine(Hsl, hsl, extend(Color, {\n brighter: function(k) {\n k = k == null ? brighter : Math.pow(brighter, k);\n return new Hsl(this.h, this.s, this.l * k, this.opacity);\n },\n darker: function(k) {\n k = k == null ? darker : Math.pow(darker, k);\n return new Hsl(this.h, this.s, this.l * k, this.opacity);\n },\n rgb: function() {\n var h = this.h % 360 + (this.h < 0) * 360,\n s = isNaN(h) || isNaN(this.s) ? 0 : this.s,\n l = this.l,\n m2 = l + (l < 0.5 ? l : 1 - l) * s,\n m1 = 2 * l - m2;\n return new Rgb(\n hsl2rgb(h >= 240 ? h - 240 : h + 120, m1, m2),\n hsl2rgb(h, m1, m2),\n hsl2rgb(h < 120 ? h + 240 : h - 120, m1, m2),\n this.opacity\n );\n },\n displayable: function() {\n return (0 <= this.s && this.s <= 1 || isNaN(this.s))\n && (0 <= this.l && this.l <= 1)\n && (0 <= this.opacity && this.opacity <= 1);\n }\n}));\n\n/* From FvD 13.37, CSS Color Module Level 3 */\nfunction hsl2rgb(h, m1, m2) {\n return (h < 60 ? m1 + (m2 - m1) * h / 60\n : h < 180 ? m2\n : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60\n : m1) * 255;\n}\n","export var deg2rad = Math.PI / 180;\nexport var rad2deg = 180 / Math.PI;\n","import define, {extend} from \"./define\";\nimport {Color, rgbConvert, Rgb} from \"./color\";\nimport {deg2rad, rad2deg} from \"./math\";\n\n// https://beta.observablehq.com/@mbostock/lab-and-rgb\nvar K = 18,\n Xn = 0.96422,\n Yn = 1,\n Zn = 0.82521,\n t0 = 4 / 29,\n t1 = 6 / 29,\n t2 = 3 * t1 * t1,\n t3 = t1 * t1 * t1;\n\nfunction labConvert(o) {\n if (o instanceof Lab) return new Lab(o.l, o.a, o.b, o.opacity);\n if (o instanceof Hcl) {\n if (isNaN(o.h)) return new Lab(o.l, 0, 0, o.opacity);\n var h = o.h * deg2rad;\n return new Lab(o.l, Math.cos(h) * o.c, Math.sin(h) * o.c, o.opacity);\n }\n if (!(o instanceof Rgb)) o = rgbConvert(o);\n var r = rgb2lrgb(o.r),\n g = rgb2lrgb(o.g),\n b = rgb2lrgb(o.b),\n y = xyz2lab((0.2225045 * r + 0.7168786 * g + 0.0606169 * b) / Yn), x, z;\n if (r === g && g === b) x = z = y; else {\n x = xyz2lab((0.4360747 * r + 0.3850649 * g + 0.1430804 * b) / Xn);\n z = xyz2lab((0.0139322 * r + 0.0971045 * g + 0.7141733 * b) / Zn);\n }\n return new Lab(116 * y - 16, 500 * (x - y), 200 * (y - z), o.opacity);\n}\n\nexport function gray(l, opacity) {\n return new Lab(l, 0, 0, opacity == null ? 1 : opacity);\n}\n\nexport default function lab(l, a, b, opacity) {\n return arguments.length === 1 ? labConvert(l) : new Lab(l, a, b, opacity == null ? 1 : opacity);\n}\n\nexport function Lab(l, a, b, opacity) {\n this.l = +l;\n this.a = +a;\n this.b = +b;\n this.opacity = +opacity;\n}\n\ndefine(Lab, lab, extend(Color, {\n brighter: function(k) {\n return new Lab(this.l + K * (k == null ? 1 : k), this.a, this.b, this.opacity);\n },\n darker: function(k) {\n return new Lab(this.l - K * (k == null ? 1 : k), this.a, this.b, this.opacity);\n },\n rgb: function() {\n var y = (this.l + 16) / 116,\n x = isNaN(this.a) ? y : y + this.a / 500,\n z = isNaN(this.b) ? y : y - this.b / 200;\n x = Xn * lab2xyz(x);\n y = Yn * lab2xyz(y);\n z = Zn * lab2xyz(z);\n return new Rgb(\n lrgb2rgb( 3.1338561 * x - 1.6168667 * y - 0.4906146 * z),\n lrgb2rgb(-0.9787684 * x + 1.9161415 * y + 0.0334540 * z),\n lrgb2rgb( 0.0719453 * x - 0.2289914 * y + 1.4052427 * z),\n this.opacity\n );\n }\n}));\n\nfunction xyz2lab(t) {\n return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0;\n}\n\nfunction lab2xyz(t) {\n return t > t1 ? t * t * t : t2 * (t - t0);\n}\n\nfunction lrgb2rgb(x) {\n return 255 * (x <= 0.0031308 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055);\n}\n\nfunction rgb2lrgb(x) {\n return (x /= 255) <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);\n}\n\nfunction hclConvert(o) {\n if (o instanceof Hcl) return new Hcl(o.h, o.c, o.l, o.opacity);\n if (!(o instanceof Lab)) o = labConvert(o);\n if (o.a === 0 && o.b === 0) return new Hcl(NaN, 0, o.l, o.opacity);\n var h = Math.atan2(o.b, o.a) * rad2deg;\n return new Hcl(h < 0 ? h + 360 : h, Math.sqrt(o.a * o.a + o.b * o.b), o.l, o.opacity);\n}\n\nexport function lch(l, c, h, opacity) {\n return arguments.length === 1 ? hclConvert(l) : new Hcl(h, c, l, opacity == null ? 1 : opacity);\n}\n\nexport function hcl(h, c, l, opacity) {\n return arguments.length === 1 ? hclConvert(h) : new Hcl(h, c, l, opacity == null ? 1 : opacity);\n}\n\nexport function Hcl(h, c, l, opacity) {\n this.h = +h;\n this.c = +c;\n this.l = +l;\n this.opacity = +opacity;\n}\n\ndefine(Hcl, hcl, extend(Color, {\n brighter: function(k) {\n return new Hcl(this.h, this.c, this.l + K * (k == null ? 1 : k), this.opacity);\n },\n darker: function(k) {\n return new Hcl(this.h, this.c, this.l - K * (k == null ? 1 : k), this.opacity);\n },\n rgb: function() {\n return labConvert(this).rgb();\n }\n}));\n","import define, {extend} from \"./define\";\nimport {Color, rgbConvert, Rgb, darker, brighter} from \"./color\";\nimport {deg2rad, rad2deg} from \"./math\";\n\nvar A = -0.14861,\n B = +1.78277,\n C = -0.29227,\n D = -0.90649,\n E = +1.97294,\n ED = E * D,\n EB = E * B,\n BC_DA = B * C - D * A;\n\nfunction cubehelixConvert(o) {\n if (o instanceof Cubehelix) return new Cubehelix(o.h, o.s, o.l, o.opacity);\n if (!(o instanceof Rgb)) o = rgbConvert(o);\n var r = o.r / 255,\n g = o.g / 255,\n b = o.b / 255,\n l = (BC_DA * b + ED * r - EB * g) / (BC_DA + ED - EB),\n bl = b - l,\n k = (E * (g - l) - C * bl) / D,\n s = Math.sqrt(k * k + bl * bl) / (E * l * (1 - l)), // NaN if l=0 or l=1\n h = s ? Math.atan2(k, bl) * rad2deg - 120 : NaN;\n return new Cubehelix(h < 0 ? h + 360 : h, s, l, o.opacity);\n}\n\nexport default function cubehelix(h, s, l, opacity) {\n return arguments.length === 1 ? cubehelixConvert(h) : new Cubehelix(h, s, l, opacity == null ? 1 : opacity);\n}\n\nexport function Cubehelix(h, s, l, opacity) {\n this.h = +h;\n this.s = +s;\n this.l = +l;\n this.opacity = +opacity;\n}\n\ndefine(Cubehelix, cubehelix, extend(Color, {\n brighter: function(k) {\n k = k == null ? brighter : Math.pow(brighter, k);\n return new Cubehelix(this.h, this.s, this.l * k, this.opacity);\n },\n darker: function(k) {\n k = k == null ? darker : Math.pow(darker, k);\n return new Cubehelix(this.h, this.s, this.l * k, this.opacity);\n },\n rgb: function() {\n var h = isNaN(this.h) ? 0 : (this.h + 120) * deg2rad,\n l = +this.l,\n a = isNaN(this.s) ? 0 : this.s * l * (1 - l),\n cosh = Math.cos(h),\n sinh = Math.sin(h);\n return new Rgb(\n 255 * (l + a * (A * cosh + B * sinh)),\n 255 * (l + a * (C * cosh + D * sinh)),\n 255 * (l + a * (E * cosh)),\n this.opacity\n );\n }\n}));\n","export default function(x) {\n return function() {\n return x;\n };\n}\n","import constant from \"./constant\";\n\nfunction linear(a, d) {\n return function(t) {\n return a + t * d;\n };\n}\n\nfunction exponential(a, b, y) {\n return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {\n return Math.pow(a + t * b, y);\n };\n}\n\nexport function hue(a, b) {\n var d = b - a;\n return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant(isNaN(a) ? b : a);\n}\n\nexport function gamma(y) {\n return (y = +y) === 1 ? nogamma : function(a, b) {\n return b - a ? exponential(a, b, y) : constant(isNaN(a) ? b : a);\n };\n}\n\nexport default function nogamma(a, b) {\n var d = b - a;\n return d ? linear(a, d) : constant(isNaN(a) ? b : a);\n}\n","import {rgb as colorRgb} from \"d3-color\";\nimport basis from \"./basis\";\nimport basisClosed from \"./basisClosed\";\nimport nogamma, {gamma} from \"./color\";\n\nexport default (function rgbGamma(y) {\n var color = gamma(y);\n\n function rgb(start, end) {\n var r = color((start = colorRgb(start)).r, (end = colorRgb(end)).r),\n g = color(start.g, end.g),\n b = color(start.b, end.b),\n opacity = nogamma(start.opacity, end.opacity);\n return function(t) {\n start.r = r(t);\n start.g = g(t);\n start.b = b(t);\n start.opacity = opacity(t);\n return start + \"\";\n };\n }\n\n rgb.gamma = rgbGamma;\n\n return rgb;\n})(1);\n\nfunction rgbSpline(spline) {\n return function(colors) {\n var n = colors.length,\n r = new Array(n),\n g = new Array(n),\n b = new Array(n),\n i, color;\n for (i = 0; i < n; ++i) {\n color = colorRgb(colors[i]);\n r[i] = color.r || 0;\n g[i] = color.g || 0;\n b[i] = color.b || 0;\n }\n r = spline(r);\n g = spline(g);\n b = spline(b);\n color.opacity = 1;\n return function(t) {\n color.r = r(t);\n color.g = g(t);\n color.b = b(t);\n return color + \"\";\n };\n };\n}\n\nexport var rgbBasis = rgbSpline(basis);\nexport var rgbBasisClosed = rgbSpline(basisClosed);\n","import value from \"./value\";\n\nexport default function(a, b) {\n var nb = b ? b.length : 0,\n na = a ? Math.min(nb, a.length) : 0,\n x = new Array(na),\n c = new Array(nb),\n i;\n\n for (i = 0; i < na; ++i) x[i] = value(a[i], b[i]);\n for (; i < nb; ++i) c[i] = b[i];\n\n return function(t) {\n for (i = 0; i < na; ++i) c[i] = x[i](t);\n return c;\n };\n}\n","export default function(a, b) {\n var d = new Date;\n return a = +a, b -= a, function(t) {\n return d.setTime(a + b * t), d;\n };\n}\n","export default function(a, b) {\n return a = +a, b -= a, function(t) {\n return a + b * t;\n };\n}\n","import value from \"./value\";\n\nexport default function(a, b) {\n var i = {},\n c = {},\n k;\n\n if (a === null || typeof a !== \"object\") a = {};\n if (b === null || typeof b !== \"object\") b = {};\n\n for (k in b) {\n if (k in a) {\n i[k] = value(a[k], b[k]);\n } else {\n c[k] = b[k];\n }\n }\n\n return function(t) {\n for (k in i) c[k] = i[k](t);\n return c;\n };\n}\n","import number from \"./number\";\n\nvar reA = /[-+]?(?:\\d+\\.?\\d*|\\.?\\d+)(?:[eE][-+]?\\d+)?/g,\n reB = new RegExp(reA.source, \"g\");\n\nfunction zero(b) {\n return function() {\n return b;\n };\n}\n\nfunction one(b) {\n return function(t) {\n return b(t) + \"\";\n };\n}\n\nexport default function(a, b) {\n var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b\n am, // current match in a\n bm, // current match in b\n bs, // string preceding current number in b, if any\n i = -1, // index in s\n s = [], // string constants and placeholders\n q = []; // number interpolators\n\n // Coerce inputs to strings.\n a = a + \"\", b = b + \"\";\n\n // Interpolate pairs of numbers in a & b.\n while ((am = reA.exec(a))\n && (bm = reB.exec(b))) {\n if ((bs = bm.index) > bi) { // a string precedes the next number in b\n bs = b.slice(bi, bs);\n if (s[i]) s[i] += bs; // coalesce with previous string\n else s[++i] = bs;\n }\n if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match\n if (s[i]) s[i] += bm; // coalesce with previous string\n else s[++i] = bm;\n } else { // interpolate non-matching numbers\n s[++i] = null;\n q.push({i: i, x: number(am, bm)});\n }\n bi = reB.lastIndex;\n }\n\n // Add remains of b.\n if (bi < b.length) {\n bs = b.slice(bi);\n if (s[i]) s[i] += bs; // coalesce with previous string\n else s[++i] = bs;\n }\n\n // Special optimization for only a single match.\n // Otherwise, interpolate each of the numbers and rejoin the string.\n return s.length < 2 ? (q[0]\n ? one(q[0].x)\n : zero(b))\n : (b = q.length, function(t) {\n for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);\n return s.join(\"\");\n });\n}\n","import {color} from \"d3-color\";\nimport rgb from \"./rgb\";\nimport array from \"./array\";\nimport date from \"./date\";\nimport number from \"./number\";\nimport object from \"./object\";\nimport string from \"./string\";\nimport constant from \"./constant\";\n\nexport default function(a, b) {\n var t = typeof b, c;\n return b == null || t === \"boolean\" ? constant(b)\n : (t === \"number\" ? number\n : t === \"string\" ? ((c = color(b)) ? (b = c, rgb) : string)\n : b instanceof color ? rgb\n : b instanceof Date ? date\n : Array.isArray(b) ? array\n : typeof b.valueOf !== \"function\" && typeof b.toString !== \"function\" || isNaN(b) ? object\n : number)(a, b);\n}\n","export default function(a, b) {\n return a = +a, b -= a, function(t) {\n return Math.round(a + b * t);\n };\n}\n","var degrees = 180 / Math.PI;\n\nexport var identity = {\n translateX: 0,\n translateY: 0,\n rotate: 0,\n skewX: 0,\n scaleX: 1,\n scaleY: 1\n};\n\nexport default function(a, b, c, d, e, f) {\n var scaleX, scaleY, skewX;\n if (scaleX = Math.sqrt(a * a + b * b)) a /= scaleX, b /= scaleX;\n if (skewX = a * c + b * d) c -= a * skewX, d -= b * skewX;\n if (scaleY = Math.sqrt(c * c + d * d)) c /= scaleY, d /= scaleY, skewX /= scaleY;\n if (a * d < b * c) a = -a, b = -b, skewX = -skewX, scaleX = -scaleX;\n return {\n translateX: e,\n translateY: f,\n rotate: Math.atan2(b, a) * degrees,\n skewX: Math.atan(skewX) * degrees,\n scaleX: scaleX,\n scaleY: scaleY\n };\n}\n","var rho = Math.SQRT2,\n rho2 = 2,\n rho4 = 4,\n epsilon2 = 1e-12;\n\nfunction cosh(x) {\n return ((x = Math.exp(x)) + 1 / x) / 2;\n}\n\nfunction sinh(x) {\n return ((x = Math.exp(x)) - 1 / x) / 2;\n}\n\nfunction tanh(x) {\n return ((x = Math.exp(2 * x)) - 1) / (x + 1);\n}\n\n// p0 = [ux0, uy0, w0]\n// p1 = [ux1, uy1, w1]\nexport default function(p0, p1) {\n var ux0 = p0[0], uy0 = p0[1], w0 = p0[2],\n ux1 = p1[0], uy1 = p1[1], w1 = p1[2],\n dx = ux1 - ux0,\n dy = uy1 - uy0,\n d2 = dx * dx + dy * dy,\n i,\n S;\n\n // Special case for u0 ≅ u1.\n if (d2 < epsilon2) {\n S = Math.log(w1 / w0) / rho;\n i = function(t) {\n return [\n ux0 + t * dx,\n uy0 + t * dy,\n w0 * Math.exp(rho * t * S)\n ];\n }\n }\n\n // General case.\n else {\n var d1 = Math.sqrt(d2),\n b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),\n b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),\n r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),\n r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);\n S = (r1 - r0) / rho;\n i = function(t) {\n var s = t * S,\n coshr0 = cosh(r0),\n u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));\n return [\n ux0 + u * dx,\n uy0 + u * dy,\n w0 * coshr0 / cosh(rho * s + r0)\n ];\n }\n }\n\n i.duration = S * 1000;\n\n return i;\n}\n","export default function(x) {\n return function() {\n return x;\n };\n}\n","export default function(x) {\n return +x;\n}\n","import {bisect} from \"d3-array\";\nimport {interpolate as interpolateValue, interpolateNumber, interpolateRound} from \"d3-interpolate\";\nimport constant from \"./constant\";\nimport number from \"./number\";\n\nvar unit = [0, 1];\n\nexport function identity(x) {\n return x;\n}\n\nfunction normalize(a, b) {\n return (b -= (a = +a))\n ? function(x) { return (x - a) / b; }\n : constant(isNaN(b) ? NaN : 0.5);\n}\n\nfunction clamper(domain) {\n var a = domain[0], b = domain[domain.length - 1], t;\n if (a > b) t = a, a = b, b = t;\n return function(x) { return Math.max(a, Math.min(b, x)); };\n}\n\n// normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].\n// interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].\nfunction bimap(domain, range, interpolate) {\n var d0 = domain[0], d1 = domain[1], r0 = range[0], r1 = range[1];\n if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);\n else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);\n return function(x) { return r0(d0(x)); };\n}\n\nfunction polymap(domain, range, interpolate) {\n var j = Math.min(domain.length, range.length) - 1,\n d = new Array(j),\n r = new Array(j),\n i = -1;\n\n // Reverse descending domains.\n if (domain[j] < domain[0]) {\n domain = domain.slice().reverse();\n range = range.slice().reverse();\n }\n\n while (++i < j) {\n d[i] = normalize(domain[i], domain[i + 1]);\n r[i] = interpolate(range[i], range[i + 1]);\n }\n\n return function(x) {\n var i = bisect(domain, x, 1, j) - 1;\n return r[i](d[i](x));\n };\n}\n\nexport function copy(source, target) {\n return target\n .domain(source.domain())\n .range(source.range())\n .interpolate(source.interpolate())\n .clamp(source.clamp())\n .unknown(source.unknown());\n}\n\nexport function transformer() {\n var domain = unit,\n range = unit,\n interpolate = interpolateValue,\n transform,\n untransform,\n unknown,\n clamp = identity,\n piecewise,\n output,\n input;\n\n function rescale() {\n piecewise = Math.min(domain.length, range.length) > 2 ? polymap : bimap;\n output = input = null;\n return scale;\n }\n\n function scale(x) {\n return isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x)));\n }\n\n scale.invert = function(y) {\n return clamp(untransform((input || (input = piecewise(range, domain.map(transform), interpolateNumber)))(y)));\n };\n\n scale.domain = function(_) {\n return arguments.length ? (domain = Array.from(_, number), clamp === identity || (clamp = clamper(domain)), rescale()) : domain.slice();\n };\n\n scale.range = function(_) {\n return arguments.length ? (range = Array.from(_), rescale()) : range.slice();\n };\n\n scale.rangeRound = function(_) {\n return range = Array.from(_), interpolate = interpolateRound, rescale();\n };\n\n scale.clamp = function(_) {\n return arguments.length ? (clamp = _ ? clamper(domain) : identity, scale) : clamp !== identity;\n };\n\n scale.interpolate = function(_) {\n return arguments.length ? (interpolate = _, rescale()) : interpolate;\n };\n\n scale.unknown = function(_) {\n return arguments.length ? (unknown = _, scale) : unknown;\n };\n\n return function(t, u) {\n transform = t, untransform = u;\n return rescale();\n };\n}\n\nexport default function continuous(transform, untransform) {\n return transformer()(transform, untransform);\n}\n","// Computes the decimal coefficient and exponent of the specified number x with\n// significant digits p, where x is positive and p is in [1, 21] or undefined.\n// For example, formatDecimal(1.23) returns [\"123\", 0].\nexport default function(x, p) {\n if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf(\"e\")) < 0) return null; // NaN, ±Infinity\n var i, coefficient = x.slice(0, i);\n\n // The string returned by toExponential either has the form \\d\\.\\d+e[-+]\\d+\n // (e.g., 1.2e+3) or the form \\de[-+]\\d+ (e.g., 1e+3).\n return [\n coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,\n +x.slice(i + 1)\n ];\n}\n","import formatDecimal from \"./formatDecimal\";\n\nexport default function(x) {\n return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN;\n}\n","export default function(grouping, thousands) {\n return function(value, width) {\n var i = value.length,\n t = [],\n j = 0,\n g = grouping[0],\n length = 0;\n\n while (i > 0 && g > 0) {\n if (length + g + 1 > width) g = Math.max(1, width - length);\n t.push(value.substring(i -= g, i + g));\n if ((length += g + 1) > width) break;\n g = grouping[j = (j + 1) % grouping.length];\n }\n\n return t.reverse().join(thousands);\n };\n}\n","export default function(numerals) {\n return function(value) {\n return value.replace(/[0-9]/g, function(i) {\n return numerals[+i];\n });\n };\n}\n","// [[fill]align][sign][symbol][0][width][,][.precision][~][type]\nvar re = /^(?:(.)?([<>=^]))?([+\\-( ])?([$#])?(0)?(\\d+)?(,)?(\\.\\d+)?(~)?([a-z%])?$/i;\n\nexport default function formatSpecifier(specifier) {\n return new FormatSpecifier(specifier);\n}\n\nformatSpecifier.prototype = FormatSpecifier.prototype; // instanceof\n\nfunction FormatSpecifier(specifier) {\n if (!(match = re.exec(specifier))) throw new Error(\"invalid format: \" + specifier);\n var match;\n this.fill = match[1] || \" \";\n this.align = match[2] || \">\";\n this.sign = match[3] || \"-\";\n this.symbol = match[4] || \"\";\n this.zero = !!match[5];\n this.width = match[6] && +match[6];\n this.comma = !!match[7];\n this.precision = match[8] && +match[8].slice(1);\n this.trim = !!match[9];\n this.type = match[10] || \"\";\n}\n\nFormatSpecifier.prototype.toString = function() {\n return this.fill\n + this.align\n + this.sign\n + this.symbol\n + (this.zero ? \"0\" : \"\")\n + (this.width == null ? \"\" : Math.max(1, this.width | 0))\n + (this.comma ? \",\" : \"\")\n + (this.precision == null ? \"\" : \".\" + Math.max(0, this.precision | 0))\n + (this.trim ? \"~\" : \"\")\n + this.type;\n};\n","// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.\nexport default function(s) {\n out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {\n switch (s[i]) {\n case \".\": i0 = i1 = i; break;\n case \"0\": if (i0 === 0) i0 = i; i1 = i; break;\n default: if (i0 > 0) { if (!+s[i]) break out; i0 = 0; } break;\n }\n }\n return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;\n}\n","import formatDecimal from \"./formatDecimal\";\n\nexport var prefixExponent;\n\nexport default function(x, p) {\n var d = formatDecimal(x, p);\n if (!d) return x + \"\";\n var coefficient = d[0],\n exponent = d[1],\n i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,\n n = coefficient.length;\n return i === n ? coefficient\n : i > n ? coefficient + new Array(i - n + 1).join(\"0\")\n : i > 0 ? coefficient.slice(0, i) + \".\" + coefficient.slice(i)\n : \"0.\" + new Array(1 - i).join(\"0\") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y!\n}\n","import formatDecimal from \"./formatDecimal\";\n\nexport default function(x, p) {\n var d = formatDecimal(x, p);\n if (!d) return x + \"\";\n var coefficient = d[0],\n exponent = d[1];\n return exponent < 0 ? \"0.\" + new Array(-exponent).join(\"0\") + coefficient\n : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + \".\" + coefficient.slice(exponent + 1)\n : coefficient + new Array(exponent - coefficient.length + 2).join(\"0\");\n}\n","import formatPrefixAuto from \"./formatPrefixAuto\";\nimport formatRounded from \"./formatRounded\";\n\nexport default {\n \"%\": function(x, p) { return (x * 100).toFixed(p); },\n \"b\": function(x) { return Math.round(x).toString(2); },\n \"c\": function(x) { return x + \"\"; },\n \"d\": function(x) { return Math.round(x).toString(10); },\n \"e\": function(x, p) { return x.toExponential(p); },\n \"f\": function(x, p) { return x.toFixed(p); },\n \"g\": function(x, p) { return x.toPrecision(p); },\n \"o\": function(x) { return Math.round(x).toString(8); },\n \"p\": function(x, p) { return formatRounded(x * 100, p); },\n \"r\": formatRounded,\n \"s\": formatPrefixAuto,\n \"X\": function(x) { return Math.round(x).toString(16).toUpperCase(); },\n \"x\": function(x) { return Math.round(x).toString(16); }\n};\n","export default function(x) {\n return x;\n}\n","import exponent from \"./exponent\";\nimport formatGroup from \"./formatGroup\";\nimport formatNumerals from \"./formatNumerals\";\nimport formatSpecifier from \"./formatSpecifier\";\nimport formatTrim from \"./formatTrim\";\nimport formatTypes from \"./formatTypes\";\nimport {prefixExponent} from \"./formatPrefixAuto\";\nimport identity from \"./identity\";\n\nvar prefixes = [\"y\",\"z\",\"a\",\"f\",\"p\",\"n\",\"µ\",\"m\",\"\",\"k\",\"M\",\"G\",\"T\",\"P\",\"E\",\"Z\",\"Y\"];\n\nexport default function(locale) {\n var group = locale.grouping && locale.thousands ? formatGroup(locale.grouping, locale.thousands) : identity,\n currency = locale.currency,\n decimal = locale.decimal,\n numerals = locale.numerals ? formatNumerals(locale.numerals) : identity,\n percent = locale.percent || \"%\";\n\n function newFormat(specifier) {\n specifier = formatSpecifier(specifier);\n\n var fill = specifier.fill,\n align = specifier.align,\n sign = specifier.sign,\n symbol = specifier.symbol,\n zero = specifier.zero,\n width = specifier.width,\n comma = specifier.comma,\n precision = specifier.precision,\n trim = specifier.trim,\n type = specifier.type;\n\n // The \"n\" type is an alias for \",g\".\n if (type === \"n\") comma = true, type = \"g\";\n\n // The \"\" type, and any invalid type, is an alias for \".12~g\".\n else if (!formatTypes[type]) precision == null && (precision = 12), trim = true, type = \"g\";\n\n // If zero fill is specified, padding goes after sign and before digits.\n if (zero || (fill === \"0\" && align === \"=\")) zero = true, fill = \"0\", align = \"=\";\n\n // Compute the prefix and suffix.\n // For SI-prefix, the suffix is lazily computed.\n var prefix = symbol === \"$\" ? currency[0] : symbol === \"#\" && /[boxX]/.test(type) ? \"0\" + type.toLowerCase() : \"\",\n suffix = symbol === \"$\" ? currency[1] : /[%p]/.test(type) ? percent : \"\";\n\n // What format function should we use?\n // Is this an integer type?\n // Can this type generate exponential notation?\n var formatType = formatTypes[type],\n maybeSuffix = /[defgprs%]/.test(type);\n\n // Set the default precision if not specified,\n // or clamp the specified precision to the supported range.\n // For significant precision, it must be in [1, 21].\n // For fixed precision, it must be in [0, 20].\n precision = precision == null ? 6\n : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))\n : Math.max(0, Math.min(20, precision));\n\n function format(value) {\n var valuePrefix = prefix,\n valueSuffix = suffix,\n i, n, c;\n\n if (type === \"c\") {\n valueSuffix = formatType(value) + valueSuffix;\n value = \"\";\n } else {\n value = +value;\n\n // Perform the initial formatting.\n var valueNegative = value < 0;\n value = formatType(Math.abs(value), precision);\n\n // Trim insignificant zeros.\n if (trim) value = formatTrim(value);\n\n // If a negative value rounds to zero during formatting, treat as positive.\n if (valueNegative && +value === 0) valueNegative = false;\n\n // Compute the prefix and suffix.\n valuePrefix = (valueNegative ? (sign === \"(\" ? sign : \"-\") : sign === \"-\" || sign === \"(\" ? \"\" : sign) + valuePrefix;\n valueSuffix = (type === \"s\" ? prefixes[8 + prefixExponent / 3] : \"\") + valueSuffix + (valueNegative && sign === \"(\" ? \")\" : \"\");\n\n // Break the formatted value into the integer “value” part that can be\n // grouped, and fractional or exponential “suffix” part that is not.\n if (maybeSuffix) {\n i = -1, n = value.length;\n while (++i < n) {\n if (c = value.charCodeAt(i), 48 > c || c > 57) {\n valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;\n value = value.slice(0, i);\n break;\n }\n }\n }\n }\n\n // If the fill character is not \"0\", grouping is applied before padding.\n if (comma && !zero) value = group(value, Infinity);\n\n // Compute the padding.\n var length = valuePrefix.length + value.length + valueSuffix.length,\n padding = length < width ? new Array(width - length + 1).join(fill) : \"\";\n\n // If the fill character is \"0\", grouping is applied after padding.\n if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = \"\";\n\n // Reconstruct the final output based on the desired alignment.\n switch (align) {\n case \"<\": value = valuePrefix + value + valueSuffix + padding; break;\n case \"=\": value = valuePrefix + padding + value + valueSuffix; break;\n case \"^\": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break;\n default: value = padding + valuePrefix + value + valueSuffix; break;\n }\n\n return numerals(value);\n }\n\n format.toString = function() {\n return specifier + \"\";\n };\n\n return format;\n }\n\n function formatPrefix(specifier, value) {\n var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = \"f\", specifier)),\n e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,\n k = Math.pow(10, -e),\n prefix = prefixes[8 + e / 3];\n return function(value) {\n return f(k * value) + prefix;\n };\n }\n\n return {\n format: newFormat,\n formatPrefix: formatPrefix\n };\n}\n","import formatLocale from \"./locale\";\n\nvar locale;\nexport var format;\nexport var formatPrefix;\n\ndefaultLocale({\n decimal: \".\",\n thousands: \",\",\n grouping: [3],\n currency: [\"$\", \"\"]\n});\n\nexport default function defaultLocale(definition) {\n locale = formatLocale(definition);\n format = locale.format;\n formatPrefix = locale.formatPrefix;\n return locale;\n}\n","import exponent from \"./exponent\";\n\nexport default function(step) {\n return Math.max(0, -exponent(Math.abs(step)));\n}\n","import exponent from \"./exponent\";\n\nexport default function(step, value) {\n return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));\n}\n","import exponent from \"./exponent\";\n\nexport default function(step, max) {\n step = Math.abs(step), max = Math.abs(max) - step;\n return Math.max(0, exponent(max) - exponent(step)) + 1;\n}\n","import {tickStep} from \"d3-array\";\nimport {format, formatPrefix, formatSpecifier, precisionFixed, precisionPrefix, precisionRound} from \"d3-format\";\n\nexport default function(start, stop, count, specifier) {\n var step = tickStep(start, stop, count),\n precision;\n specifier = formatSpecifier(specifier == null ? \",f\" : specifier);\n switch (specifier.type) {\n case \"s\": {\n var value = Math.max(Math.abs(start), Math.abs(stop));\n if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;\n return formatPrefix(specifier, value);\n }\n case \"\":\n case \"e\":\n case \"g\":\n case \"p\":\n case \"r\": {\n if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === \"e\");\n break;\n }\n case \"f\":\n case \"%\": {\n if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === \"%\") * 2;\n break;\n }\n }\n return format(specifier);\n}\n","import {ticks, tickIncrement} from \"d3-array\";\nimport continuous, {copy, identity} from \"./continuous\";\nimport {initRange} from \"./init\";\nimport tickFormat from \"./tickFormat\";\n\nexport function linearish(scale) {\n var domain = scale.domain;\n\n scale.ticks = function(count) {\n var d = domain();\n return ticks(d[0], d[d.length - 1], count == null ? 10 : count);\n };\n\n scale.tickFormat = function(count, specifier) {\n var d = domain();\n return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);\n };\n\n scale.nice = function(count) {\n if (count == null) count = 10;\n\n var d = domain(),\n i0 = 0,\n i1 = d.length - 1,\n start = d[i0],\n stop = d[i1],\n step;\n\n if (stop < start) {\n step = start, start = stop, stop = step;\n step = i0, i0 = i1, i1 = step;\n }\n\n step = tickIncrement(start, stop, count);\n\n if (step > 0) {\n start = Math.floor(start / step) * step;\n stop = Math.ceil(stop / step) * step;\n step = tickIncrement(start, stop, count);\n } else if (step < 0) {\n start = Math.ceil(start * step) / step;\n stop = Math.floor(stop * step) / step;\n step = tickIncrement(start, stop, count);\n }\n\n if (step > 0) {\n d[i0] = Math.floor(start / step) * step;\n d[i1] = Math.ceil(stop / step) * step;\n domain(d);\n } else if (step < 0) {\n d[i0] = Math.ceil(start * step) / step;\n d[i1] = Math.floor(stop * step) / step;\n domain(d);\n }\n\n return scale;\n };\n\n return scale;\n}\n\nexport default function linear() {\n var scale = continuous(identity, identity);\n\n scale.copy = function() {\n return copy(scale, linear());\n };\n\n initRange.apply(scale, arguments);\n\n return linearish(scale);\n}\n","var t0 = new Date,\n t1 = new Date;\n\nexport default function newInterval(floori, offseti, count, field) {\n\n function interval(date) {\n return floori(date = new Date(+date)), date;\n }\n\n interval.floor = interval;\n\n interval.ceil = function(date) {\n return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date;\n };\n\n interval.round = function(date) {\n var d0 = interval(date),\n d1 = interval.ceil(date);\n return date - d0 < d1 - date ? d0 : d1;\n };\n\n interval.offset = function(date, step) {\n return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date;\n };\n\n interval.range = function(start, stop, step) {\n var range = [], previous;\n start = interval.ceil(start);\n step = step == null ? 1 : Math.floor(step);\n if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date\n do range.push(previous = new Date(+start)), offseti(start, step), floori(start);\n while (previous < start && start < stop);\n return range;\n };\n\n interval.filter = function(test) {\n return newInterval(function(date) {\n if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1);\n }, function(date, step) {\n if (date >= date) {\n if (step < 0) while (++step <= 0) {\n while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty\n } else while (--step >= 0) {\n while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty\n }\n }\n });\n };\n\n if (count) {\n interval.count = function(start, end) {\n t0.setTime(+start), t1.setTime(+end);\n floori(t0), floori(t1);\n return Math.floor(count(t0, t1));\n };\n\n interval.every = function(step) {\n step = Math.floor(step);\n return !isFinite(step) || !(step > 0) ? null\n : !(step > 1) ? interval\n : interval.filter(field\n ? function(d) { return field(d) % step === 0; }\n : function(d) { return interval.count(0, d) % step === 0; });\n };\n }\n\n return interval;\n}\n","import interval from \"./interval\";\n\nvar millisecond = interval(function() {\n // noop\n}, function(date, step) {\n date.setTime(+date + step);\n}, function(start, end) {\n return end - start;\n});\n\n// An optimized implementation for this simple case.\nmillisecond.every = function(k) {\n k = Math.floor(k);\n if (!isFinite(k) || !(k > 0)) return null;\n if (!(k > 1)) return millisecond;\n return interval(function(date) {\n date.setTime(Math.floor(date / k) * k);\n }, function(date, step) {\n date.setTime(+date + step * k);\n }, function(start, end) {\n return (end - start) / k;\n });\n};\n\nexport default millisecond;\nexport var milliseconds = millisecond.range;\n","export var durationSecond = 1e3;\nexport var durationMinute = 6e4;\nexport var durationHour = 36e5;\nexport var durationDay = 864e5;\nexport var durationWeek = 6048e5;\n","import interval from \"./interval\";\nimport {durationSecond} from \"./duration\";\n\nvar second = interval(function(date) {\n date.setTime(date - date.getMilliseconds());\n}, function(date, step) {\n date.setTime(+date + step * durationSecond);\n}, function(start, end) {\n return (end - start) / durationSecond;\n}, function(date) {\n return date.getUTCSeconds();\n});\n\nexport default second;\nexport var seconds = second.range;\n","import interval from \"./interval\";\nimport {durationMinute, durationSecond} from \"./duration\";\n\nvar minute = interval(function(date) {\n date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond);\n}, function(date, step) {\n date.setTime(+date + step * durationMinute);\n}, function(start, end) {\n return (end - start) / durationMinute;\n}, function(date) {\n return date.getMinutes();\n});\n\nexport default minute;\nexport var minutes = minute.range;\n","import interval from \"./interval\";\nimport {durationHour, durationMinute, durationSecond} from \"./duration\";\n\nvar hour = interval(function(date) {\n date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute);\n}, function(date, step) {\n date.setTime(+date + step * durationHour);\n}, function(start, end) {\n return (end - start) / durationHour;\n}, function(date) {\n return date.getHours();\n});\n\nexport default hour;\nexport var hours = hour.range;\n","import interval from \"./interval\";\nimport {durationDay, durationMinute} from \"./duration\";\n\nvar day = interval(function(date) {\n date.setHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setDate(date.getDate() + step);\n}, function(start, end) {\n return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay;\n}, function(date) {\n return date.getDate() - 1;\n});\n\nexport default day;\nexport var days = day.range;\n","import interval from \"./interval\";\nimport {durationMinute, durationWeek} from \"./duration\";\n\nfunction weekday(i) {\n return interval(function(date) {\n date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);\n date.setHours(0, 0, 0, 0);\n }, function(date, step) {\n date.setDate(date.getDate() + step * 7);\n }, function(start, end) {\n return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;\n });\n}\n\nexport var sunday = weekday(0);\nexport var monday = weekday(1);\nexport var tuesday = weekday(2);\nexport var wednesday = weekday(3);\nexport var thursday = weekday(4);\nexport var friday = weekday(5);\nexport var saturday = weekday(6);\n\nexport var sundays = sunday.range;\nexport var mondays = monday.range;\nexport var tuesdays = tuesday.range;\nexport var wednesdays = wednesday.range;\nexport var thursdays = thursday.range;\nexport var fridays = friday.range;\nexport var saturdays = saturday.range;\n","import interval from \"./interval\";\n\nvar month = interval(function(date) {\n date.setDate(1);\n date.setHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setMonth(date.getMonth() + step);\n}, function(start, end) {\n return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12;\n}, function(date) {\n return date.getMonth();\n});\n\nexport default month;\nexport var months = month.range;\n","import interval from \"./interval\";\n\nvar year = interval(function(date) {\n date.setMonth(0, 1);\n date.setHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setFullYear(date.getFullYear() + step);\n}, function(start, end) {\n return end.getFullYear() - start.getFullYear();\n}, function(date) {\n return date.getFullYear();\n});\n\n// An optimized implementation for this simple case.\nyear.every = function(k) {\n return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : interval(function(date) {\n date.setFullYear(Math.floor(date.getFullYear() / k) * k);\n date.setMonth(0, 1);\n date.setHours(0, 0, 0, 0);\n }, function(date, step) {\n date.setFullYear(date.getFullYear() + step * k);\n });\n};\n\nexport default year;\nexport var years = year.range;\n","import interval from \"./interval\";\nimport {durationMinute} from \"./duration\";\n\nvar utcMinute = interval(function(date) {\n date.setUTCSeconds(0, 0);\n}, function(date, step) {\n date.setTime(+date + step * durationMinute);\n}, function(start, end) {\n return (end - start) / durationMinute;\n}, function(date) {\n return date.getUTCMinutes();\n});\n\nexport default utcMinute;\nexport var utcMinutes = utcMinute.range;\n","import interval from \"./interval\";\nimport {durationHour} from \"./duration\";\n\nvar utcHour = interval(function(date) {\n date.setUTCMinutes(0, 0, 0);\n}, function(date, step) {\n date.setTime(+date + step * durationHour);\n}, function(start, end) {\n return (end - start) / durationHour;\n}, function(date) {\n return date.getUTCHours();\n});\n\nexport default utcHour;\nexport var utcHours = utcHour.range;\n","import interval from \"./interval\";\nimport {durationDay} from \"./duration\";\n\nvar utcDay = interval(function(date) {\n date.setUTCHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setUTCDate(date.getUTCDate() + step);\n}, function(start, end) {\n return (end - start) / durationDay;\n}, function(date) {\n return date.getUTCDate() - 1;\n});\n\nexport default utcDay;\nexport var utcDays = utcDay.range;\n","import interval from \"./interval\";\nimport {durationWeek} from \"./duration\";\n\nfunction utcWeekday(i) {\n return interval(function(date) {\n date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);\n date.setUTCHours(0, 0, 0, 0);\n }, function(date, step) {\n date.setUTCDate(date.getUTCDate() + step * 7);\n }, function(start, end) {\n return (end - start) / durationWeek;\n });\n}\n\nexport var utcSunday = utcWeekday(0);\nexport var utcMonday = utcWeekday(1);\nexport var utcTuesday = utcWeekday(2);\nexport var utcWednesday = utcWeekday(3);\nexport var utcThursday = utcWeekday(4);\nexport var utcFriday = utcWeekday(5);\nexport var utcSaturday = utcWeekday(6);\n\nexport var utcSundays = utcSunday.range;\nexport var utcMondays = utcMonday.range;\nexport var utcTuesdays = utcTuesday.range;\nexport var utcWednesdays = utcWednesday.range;\nexport var utcThursdays = utcThursday.range;\nexport var utcFridays = utcFriday.range;\nexport var utcSaturdays = utcSaturday.range;\n","import interval from \"./interval\";\n\nvar utcMonth = interval(function(date) {\n date.setUTCDate(1);\n date.setUTCHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setUTCMonth(date.getUTCMonth() + step);\n}, function(start, end) {\n return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12;\n}, function(date) {\n return date.getUTCMonth();\n});\n\nexport default utcMonth;\nexport var utcMonths = utcMonth.range;\n","import interval from \"./interval\";\n\nvar utcYear = interval(function(date) {\n date.setUTCMonth(0, 1);\n date.setUTCHours(0, 0, 0, 0);\n}, function(date, step) {\n date.setUTCFullYear(date.getUTCFullYear() + step);\n}, function(start, end) {\n return end.getUTCFullYear() - start.getUTCFullYear();\n}, function(date) {\n return date.getUTCFullYear();\n});\n\n// An optimized implementation for this simple case.\nutcYear.every = function(k) {\n return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : interval(function(date) {\n date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);\n date.setUTCMonth(0, 1);\n date.setUTCHours(0, 0, 0, 0);\n }, function(date, step) {\n date.setUTCFullYear(date.getUTCFullYear() + step * k);\n });\n};\n\nexport default utcYear;\nexport var utcYears = utcYear.range;\n","import {\n timeDay,\n timeSunday,\n timeMonday,\n timeThursday,\n timeYear,\n utcDay,\n utcSunday,\n utcMonday,\n utcThursday,\n utcYear\n} from \"d3-time\";\n\nfunction localDate(d) {\n if (0 <= d.y && d.y < 100) {\n var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L);\n date.setFullYear(d.y);\n return date;\n }\n return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L);\n}\n\nfunction utcDate(d) {\n if (0 <= d.y && d.y < 100) {\n var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L));\n date.setUTCFullYear(d.y);\n return date;\n }\n return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L));\n}\n\nfunction newYear(y) {\n return {y: y, m: 0, d: 1, H: 0, M: 0, S: 0, L: 0};\n}\n\nexport default function formatLocale(locale) {\n var locale_dateTime = locale.dateTime,\n locale_date = locale.date,\n locale_time = locale.time,\n locale_periods = locale.periods,\n locale_weekdays = locale.days,\n locale_shortWeekdays = locale.shortDays,\n locale_months = locale.months,\n locale_shortMonths = locale.shortMonths;\n\n var periodRe = formatRe(locale_periods),\n periodLookup = formatLookup(locale_periods),\n weekdayRe = formatRe(locale_weekdays),\n weekdayLookup = formatLookup(locale_weekdays),\n shortWeekdayRe = formatRe(locale_shortWeekdays),\n shortWeekdayLookup = formatLookup(locale_shortWeekdays),\n monthRe = formatRe(locale_months),\n monthLookup = formatLookup(locale_months),\n shortMonthRe = formatRe(locale_shortMonths),\n shortMonthLookup = formatLookup(locale_shortMonths);\n\n var formats = {\n \"a\": formatShortWeekday,\n \"A\": formatWeekday,\n \"b\": formatShortMonth,\n \"B\": formatMonth,\n \"c\": null,\n \"d\": formatDayOfMonth,\n \"e\": formatDayOfMonth,\n \"f\": formatMicroseconds,\n \"H\": formatHour24,\n \"I\": formatHour12,\n \"j\": formatDayOfYear,\n \"L\": formatMilliseconds,\n \"m\": formatMonthNumber,\n \"M\": formatMinutes,\n \"p\": formatPeriod,\n \"Q\": formatUnixTimestamp,\n \"s\": formatUnixTimestampSeconds,\n \"S\": formatSeconds,\n \"u\": formatWeekdayNumberMonday,\n \"U\": formatWeekNumberSunday,\n \"V\": formatWeekNumberISO,\n \"w\": formatWeekdayNumberSunday,\n \"W\": formatWeekNumberMonday,\n \"x\": null,\n \"X\": null,\n \"y\": formatYear,\n \"Y\": formatFullYear,\n \"Z\": formatZone,\n \"%\": formatLiteralPercent\n };\n\n var utcFormats = {\n \"a\": formatUTCShortWeekday,\n \"A\": formatUTCWeekday,\n \"b\": formatUTCShortMonth,\n \"B\": formatUTCMonth,\n \"c\": null,\n \"d\": formatUTCDayOfMonth,\n \"e\": formatUTCDayOfMonth,\n \"f\": formatUTCMicroseconds,\n \"H\": formatUTCHour24,\n \"I\": formatUTCHour12,\n \"j\": formatUTCDayOfYear,\n \"L\": formatUTCMilliseconds,\n \"m\": formatUTCMonthNumber,\n \"M\": formatUTCMinutes,\n \"p\": formatUTCPeriod,\n \"Q\": formatUnixTimestamp,\n \"s\": formatUnixTimestampSeconds,\n \"S\": formatUTCSeconds,\n \"u\": formatUTCWeekdayNumberMonday,\n \"U\": formatUTCWeekNumberSunday,\n \"V\": formatUTCWeekNumberISO,\n \"w\": formatUTCWeekdayNumberSunday,\n \"W\": formatUTCWeekNumberMonday,\n \"x\": null,\n \"X\": null,\n \"y\": formatUTCYear,\n \"Y\": formatUTCFullYear,\n \"Z\": formatUTCZone,\n \"%\": formatLiteralPercent\n };\n\n var parses = {\n \"a\": parseShortWeekday,\n \"A\": parseWeekday,\n \"b\": parseShortMonth,\n \"B\": parseMonth,\n \"c\": parseLocaleDateTime,\n \"d\": parseDayOfMonth,\n \"e\": parseDayOfMonth,\n \"f\": parseMicroseconds,\n \"H\": parseHour24,\n \"I\": parseHour24,\n \"j\": parseDayOfYear,\n \"L\": parseMilliseconds,\n \"m\": parseMonthNumber,\n \"M\": parseMinutes,\n \"p\": parsePeriod,\n \"Q\": parseUnixTimestamp,\n \"s\": parseUnixTimestampSeconds,\n \"S\": parseSeconds,\n \"u\": parseWeekdayNumberMonday,\n \"U\": parseWeekNumberSunday,\n \"V\": parseWeekNumberISO,\n \"w\": parseWeekdayNumberSunday,\n \"W\": parseWeekNumberMonday,\n \"x\": parseLocaleDate,\n \"X\": parseLocaleTime,\n \"y\": parseYear,\n \"Y\": parseFullYear,\n \"Z\": parseZone,\n \"%\": parseLiteralPercent\n };\n\n // These recursive directive definitions must be deferred.\n formats.x = newFormat(locale_date, formats);\n formats.X = newFormat(locale_time, formats);\n formats.c = newFormat(locale_dateTime, formats);\n utcFormats.x = newFormat(locale_date, utcFormats);\n utcFormats.X = newFormat(locale_time, utcFormats);\n utcFormats.c = newFormat(locale_dateTime, utcFormats);\n\n function newFormat(specifier, formats) {\n return function(date) {\n var string = [],\n i = -1,\n j = 0,\n n = specifier.length,\n c,\n pad,\n format;\n\n if (!(date instanceof Date)) date = new Date(+date);\n\n while (++i < n) {\n if (specifier.charCodeAt(i) === 37) {\n string.push(specifier.slice(j, i));\n if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i);\n else pad = c === \"e\" ? \" \" : \"0\";\n if (format = formats[c]) c = format(date, pad);\n string.push(c);\n j = i + 1;\n }\n }\n\n string.push(specifier.slice(j, i));\n return string.join(\"\");\n };\n }\n\n function newParse(specifier, newDate) {\n return function(string) {\n var d = newYear(1900),\n i = parseSpecifier(d, specifier, string += \"\", 0),\n week, day;\n if (i != string.length) return null;\n\n // If a UNIX timestamp is specified, return it.\n if (\"Q\" in d) return new Date(d.Q);\n\n // The am-pm flag is 0 for AM, and 1 for PM.\n if (\"p\" in d) d.H = d.H % 12 + d.p * 12;\n\n // Convert day-of-week and week-of-year to day-of-year.\n if (\"V\" in d) {\n if (d.V < 1 || d.V > 53) return null;\n if (!(\"w\" in d)) d.w = 1;\n if (\"Z\" in d) {\n week = utcDate(newYear(d.y)), day = week.getUTCDay();\n week = day > 4 || day === 0 ? utcMonday.ceil(week) : utcMonday(week);\n week = utcDay.offset(week, (d.V - 1) * 7);\n d.y = week.getUTCFullYear();\n d.m = week.getUTCMonth();\n d.d = week.getUTCDate() + (d.w + 6) % 7;\n } else {\n week = newDate(newYear(d.y)), day = week.getDay();\n week = day > 4 || day === 0 ? timeMonday.ceil(week) : timeMonday(week);\n week = timeDay.offset(week, (d.V - 1) * 7);\n d.y = week.getFullYear();\n d.m = week.getMonth();\n d.d = week.getDate() + (d.w + 6) % 7;\n }\n } else if (\"W\" in d || \"U\" in d) {\n if (!(\"w\" in d)) d.w = \"u\" in d ? d.u % 7 : \"W\" in d ? 1 : 0;\n day = \"Z\" in d ? utcDate(newYear(d.y)).getUTCDay() : newDate(newYear(d.y)).getDay();\n d.m = 0;\n d.d = \"W\" in d ? (d.w + 6) % 7 + d.W * 7 - (day + 5) % 7 : d.w + d.U * 7 - (day + 6) % 7;\n }\n\n // If a time zone is specified, all fields are interpreted as UTC and then\n // offset according to the specified time zone.\n if (\"Z\" in d) {\n d.H += d.Z / 100 | 0;\n d.M += d.Z % 100;\n return utcDate(d);\n }\n\n // Otherwise, all fields are in local time.\n return newDate(d);\n };\n }\n\n function parseSpecifier(d, specifier, string, j) {\n var i = 0,\n n = specifier.length,\n m = string.length,\n c,\n parse;\n\n while (i < n) {\n if (j >= m) return -1;\n c = specifier.charCodeAt(i++);\n if (c === 37) {\n c = specifier.charAt(i++);\n parse = parses[c in pads ? specifier.charAt(i++) : c];\n if (!parse || ((j = parse(d, string, j)) < 0)) return -1;\n } else if (c != string.charCodeAt(j++)) {\n return -1;\n }\n }\n\n return j;\n }\n\n function parsePeriod(d, string, i) {\n var n = periodRe.exec(string.slice(i));\n return n ? (d.p = periodLookup[n[0].toLowerCase()], i + n[0].length) : -1;\n }\n\n function parseShortWeekday(d, string, i) {\n var n = shortWeekdayRe.exec(string.slice(i));\n return n ? (d.w = shortWeekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1;\n }\n\n function parseWeekday(d, string, i) {\n var n = weekdayRe.exec(string.slice(i));\n return n ? (d.w = weekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1;\n }\n\n function parseShortMonth(d, string, i) {\n var n = shortMonthRe.exec(string.slice(i));\n return n ? (d.m = shortMonthLookup[n[0].toLowerCase()], i + n[0].length) : -1;\n }\n\n function parseMonth(d, string, i) {\n var n = monthRe.exec(string.slice(i));\n return n ? (d.m = monthLookup[n[0].toLowerCase()], i + n[0].length) : -1;\n }\n\n function parseLocaleDateTime(d, string, i) {\n return parseSpecifier(d, locale_dateTime, string, i);\n }\n\n function parseLocaleDate(d, string, i) {\n return parseSpecifier(d, locale_date, string, i);\n }\n\n function parseLocaleTime(d, string, i) {\n return parseSpecifier(d, locale_time, string, i);\n }\n\n function formatShortWeekday(d) {\n return locale_shortWeekdays[d.getDay()];\n }\n\n function formatWeekday(d) {\n return locale_weekdays[d.getDay()];\n }\n\n function formatShortMonth(d) {\n return locale_shortMonths[d.getMonth()];\n }\n\n function formatMonth(d) {\n return locale_months[d.getMonth()];\n }\n\n function formatPeriod(d) {\n return locale_periods[+(d.getHours() >= 12)];\n }\n\n function formatUTCShortWeekday(d) {\n return locale_shortWeekdays[d.getUTCDay()];\n }\n\n function formatUTCWeekday(d) {\n return locale_weekdays[d.getUTCDay()];\n }\n\n function formatUTCShortMonth(d) {\n return locale_shortMonths[d.getUTCMonth()];\n }\n\n function formatUTCMonth(d) {\n return locale_months[d.getUTCMonth()];\n }\n\n function formatUTCPeriod(d) {\n return locale_periods[+(d.getUTCHours() >= 12)];\n }\n\n return {\n format: function(specifier) {\n var f = newFormat(specifier += \"\", formats);\n f.toString = function() { return specifier; };\n return f;\n },\n parse: function(specifier) {\n var p = newParse(specifier += \"\", localDate);\n p.toString = function() { return specifier; };\n return p;\n },\n utcFormat: function(specifier) {\n var f = newFormat(specifier += \"\", utcFormats);\n f.toString = function() { return specifier; };\n return f;\n },\n utcParse: function(specifier) {\n var p = newParse(specifier, utcDate);\n p.toString = function() { return specifier; };\n return p;\n }\n };\n}\n\nvar pads = {\"-\": \"\", \"_\": \" \", \"0\": \"0\"},\n numberRe = /^\\s*\\d+/, // note: ignores next directive\n percentRe = /^%/,\n requoteRe = /[\\\\^$*+?|[\\]().{}]/g;\n\nfunction pad(value, fill, width) {\n var sign = value < 0 ? \"-\" : \"\",\n string = (sign ? -value : value) + \"\",\n length = string.length;\n return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);\n}\n\nfunction requote(s) {\n return s.replace(requoteRe, \"\\\\$&\");\n}\n\nfunction formatRe(names) {\n return new RegExp(\"^(?:\" + names.map(requote).join(\"|\") + \")\", \"i\");\n}\n\nfunction formatLookup(names) {\n var map = {}, i = -1, n = names.length;\n while (++i < n) map[names[i].toLowerCase()] = i;\n return map;\n}\n\nfunction parseWeekdayNumberSunday(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 1));\n return n ? (d.w = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseWeekdayNumberMonday(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 1));\n return n ? (d.u = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseWeekNumberSunday(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.U = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseWeekNumberISO(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.V = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseWeekNumberMonday(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.W = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseFullYear(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 4));\n return n ? (d.y = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseYear(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1;\n}\n\nfunction parseZone(d, string, i) {\n var n = /^(Z)|([+-]\\d\\d)(?::?(\\d\\d))?/.exec(string.slice(i, i + 6));\n return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || \"00\")), i + n[0].length) : -1;\n}\n\nfunction parseMonthNumber(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.m = n[0] - 1, i + n[0].length) : -1;\n}\n\nfunction parseDayOfMonth(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.d = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseDayOfYear(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 3));\n return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseHour24(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.H = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseMinutes(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.M = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseSeconds(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 2));\n return n ? (d.S = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseMilliseconds(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 3));\n return n ? (d.L = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseMicroseconds(d, string, i) {\n var n = numberRe.exec(string.slice(i, i + 6));\n return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1;\n}\n\nfunction parseLiteralPercent(d, string, i) {\n var n = percentRe.exec(string.slice(i, i + 1));\n return n ? i + n[0].length : -1;\n}\n\nfunction parseUnixTimestamp(d, string, i) {\n var n = numberRe.exec(string.slice(i));\n return n ? (d.Q = +n[0], i + n[0].length) : -1;\n}\n\nfunction parseUnixTimestampSeconds(d, string, i) {\n var n = numberRe.exec(string.slice(i));\n return n ? (d.Q = (+n[0]) * 1000, i + n[0].length) : -1;\n}\n\nfunction formatDayOfMonth(d, p) {\n return pad(d.getDate(), p, 2);\n}\n\nfunction formatHour24(d, p) {\n return pad(d.getHours(), p, 2);\n}\n\nfunction formatHour12(d, p) {\n return pad(d.getHours() % 12 || 12, p, 2);\n}\n\nfunction formatDayOfYear(d, p) {\n return pad(1 + timeDay.count(timeYear(d), d), p, 3);\n}\n\nfunction formatMilliseconds(d, p) {\n return pad(d.getMilliseconds(), p, 3);\n}\n\nfunction formatMicroseconds(d, p) {\n return formatMilliseconds(d, p) + \"000\";\n}\n\nfunction formatMonthNumber(d, p) {\n return pad(d.getMonth() + 1, p, 2);\n}\n\nfunction formatMinutes(d, p) {\n return pad(d.getMinutes(), p, 2);\n}\n\nfunction formatSeconds(d, p) {\n return pad(d.getSeconds(), p, 2);\n}\n\nfunction formatWeekdayNumberMonday(d) {\n var day = d.getDay();\n return day === 0 ? 7 : day;\n}\n\nfunction formatWeekNumberSunday(d, p) {\n return pad(timeSunday.count(timeYear(d), d), p, 2);\n}\n\nfunction formatWeekNumberISO(d, p) {\n var day = d.getDay();\n d = (day >= 4 || day === 0) ? timeThursday(d) : timeThursday.ceil(d);\n return pad(timeThursday.count(timeYear(d), d) + (timeYear(d).getDay() === 4), p, 2);\n}\n\nfunction formatWeekdayNumberSunday(d) {\n return d.getDay();\n}\n\nfunction formatWeekNumberMonday(d, p) {\n return pad(timeMonday.count(timeYear(d), d), p, 2);\n}\n\nfunction formatYear(d, p) {\n return pad(d.getFullYear() % 100, p, 2);\n}\n\nfunction formatFullYear(d, p) {\n return pad(d.getFullYear() % 10000, p, 4);\n}\n\nfunction formatZone(d) {\n var z = d.getTimezoneOffset();\n return (z > 0 ? \"-\" : (z *= -1, \"+\"))\n + pad(z / 60 | 0, \"0\", 2)\n + pad(z % 60, \"0\", 2);\n}\n\nfunction formatUTCDayOfMonth(d, p) {\n return pad(d.getUTCDate(), p, 2);\n}\n\nfunction formatUTCHour24(d, p) {\n return pad(d.getUTCHours(), p, 2);\n}\n\nfunction formatUTCHour12(d, p) {\n return pad(d.getUTCHours() % 12 || 12, p, 2);\n}\n\nfunction formatUTCDayOfYear(d, p) {\n return pad(1 + utcDay.count(utcYear(d), d), p, 3);\n}\n\nfunction formatUTCMilliseconds(d, p) {\n return pad(d.getUTCMilliseconds(), p, 3);\n}\n\nfunction formatUTCMicroseconds(d, p) {\n return formatUTCMilliseconds(d, p) + \"000\";\n}\n\nfunction formatUTCMonthNumber(d, p) {\n return pad(d.getUTCMonth() + 1, p, 2);\n}\n\nfunction formatUTCMinutes(d, p) {\n return pad(d.getUTCMinutes(), p, 2);\n}\n\nfunction formatUTCSeconds(d, p) {\n return pad(d.getUTCSeconds(), p, 2);\n}\n\nfunction formatUTCWeekdayNumberMonday(d) {\n var dow = d.getUTCDay();\n return dow === 0 ? 7 : dow;\n}\n\nfunction formatUTCWeekNumberSunday(d, p) {\n return pad(utcSunday.count(utcYear(d), d), p, 2);\n}\n\nfunction formatUTCWeekNumberISO(d, p) {\n var day = d.getUTCDay();\n d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d);\n return pad(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2);\n}\n\nfunction formatUTCWeekdayNumberSunday(d) {\n return d.getUTCDay();\n}\n\nfunction formatUTCWeekNumberMonday(d, p) {\n return pad(utcMonday.count(utcYear(d), d), p, 2);\n}\n\nfunction formatUTCYear(d, p) {\n return pad(d.getUTCFullYear() % 100, p, 2);\n}\n\nfunction formatUTCFullYear(d, p) {\n return pad(d.getUTCFullYear() % 10000, p, 4);\n}\n\nfunction formatUTCZone() {\n return \"+0000\";\n}\n\nfunction formatLiteralPercent() {\n return \"%\";\n}\n\nfunction formatUnixTimestamp(d) {\n return +d;\n}\n\nfunction formatUnixTimestampSeconds(d) {\n return Math.floor(+d / 1000);\n}\n","import formatLocale from \"./locale\";\n\nvar locale;\nexport var timeFormat;\nexport var timeParse;\nexport var utcFormat;\nexport var utcParse;\n\ndefaultLocale({\n dateTime: \"%x, %X\",\n date: \"%-m/%-d/%Y\",\n time: \"%-I:%M:%S %p\",\n periods: [\"AM\", \"PM\"],\n days: [\"Sunday\", \"Monday\", \"Tuesday\", \"Wednesday\", \"Thursday\", \"Friday\", \"Saturday\"],\n shortDays: [\"Sun\", \"Mon\", \"Tue\", \"Wed\", \"Thu\", \"Fri\", \"Sat\"],\n months: [\"January\", \"February\", \"March\", \"April\", \"May\", \"June\", \"July\", \"August\", \"September\", \"October\", \"November\", \"December\"],\n shortMonths: [\"Jan\", \"Feb\", \"Mar\", \"Apr\", \"May\", \"Jun\", \"Jul\", \"Aug\", \"Sep\", \"Oct\", \"Nov\", \"Dec\"]\n});\n\nexport default function defaultLocale(definition) {\n locale = formatLocale(definition);\n timeFormat = locale.format;\n timeParse = locale.parse;\n utcFormat = locale.utcFormat;\n utcParse = locale.utcParse;\n return locale;\n}\n","import {utcFormat} from \"./defaultLocale\";\n\nexport var isoSpecifier = \"%Y-%m-%dT%H:%M:%S.%LZ\";\n\nfunction formatIsoNative(date) {\n return date.toISOString();\n}\n\nvar formatIso = Date.prototype.toISOString\n ? formatIsoNative\n : utcFormat(isoSpecifier);\n\nexport default formatIso;\n","import {isoSpecifier} from \"./isoFormat\";\nimport {utcParse} from \"./defaultLocale\";\n\nfunction parseIsoNative(string) {\n var date = new Date(string);\n return isNaN(date) ? null : date;\n}\n\nvar parseIso = +new Date(\"2000-01-01T00:00:00.000Z\")\n ? parseIsoNative\n : utcParse(isoSpecifier);\n\nexport default parseIso;\n","var pi = Math.PI,\n tau = 2 * pi,\n epsilon = 1e-6,\n tauEpsilon = tau - epsilon;\n\nfunction Path() {\n this._x0 = this._y0 = // start of current subpath\n this._x1 = this._y1 = null; // end of current subpath\n this._ = \"\";\n}\n\nfunction path() {\n return new Path;\n}\n\nPath.prototype = path.prototype = {\n constructor: Path,\n moveTo: function(x, y) {\n this._ += \"M\" + (this._x0 = this._x1 = +x) + \",\" + (this._y0 = this._y1 = +y);\n },\n closePath: function() {\n if (this._x1 !== null) {\n this._x1 = this._x0, this._y1 = this._y0;\n this._ += \"Z\";\n }\n },\n lineTo: function(x, y) {\n this._ += \"L\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n },\n quadraticCurveTo: function(x1, y1, x, y) {\n this._ += \"Q\" + (+x1) + \",\" + (+y1) + \",\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n },\n bezierCurveTo: function(x1, y1, x2, y2, x, y) {\n this._ += \"C\" + (+x1) + \",\" + (+y1) + \",\" + (+x2) + \",\" + (+y2) + \",\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n },\n arcTo: function(x1, y1, x2, y2, r) {\n x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r;\n var x0 = this._x1,\n y0 = this._y1,\n x21 = x2 - x1,\n y21 = y2 - y1,\n x01 = x0 - x1,\n y01 = y0 - y1,\n l01_2 = x01 * x01 + y01 * y01;\n\n // Is the radius negative? Error.\n if (r < 0) throw new Error(\"negative radius: \" + r);\n\n // Is this path empty? Move to (x1,y1).\n if (this._x1 === null) {\n this._ += \"M\" + (this._x1 = x1) + \",\" + (this._y1 = y1);\n }\n\n // Or, is (x1,y1) coincident with (x0,y0)? Do nothing.\n else if (!(l01_2 > epsilon));\n\n // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear?\n // Equivalently, is (x1,y1) coincident with (x2,y2)?\n // Or, is the radius zero? Line to (x1,y1).\n else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon) || !r) {\n this._ += \"L\" + (this._x1 = x1) + \",\" + (this._y1 = y1);\n }\n\n // Otherwise, draw an arc!\n else {\n var x20 = x2 - x0,\n y20 = y2 - y0,\n l21_2 = x21 * x21 + y21 * y21,\n l20_2 = x20 * x20 + y20 * y20,\n l21 = Math.sqrt(l21_2),\n l01 = Math.sqrt(l01_2),\n l = r * Math.tan((pi - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2),\n t01 = l / l01,\n t21 = l / l21;\n\n // If the start tangent is not coincident with (x0,y0), line to.\n if (Math.abs(t01 - 1) > epsilon) {\n this._ += \"L\" + (x1 + t01 * x01) + \",\" + (y1 + t01 * y01);\n }\n\n this._ += \"A\" + r + \",\" + r + \",0,0,\" + (+(y01 * x20 > x01 * y20)) + \",\" + (this._x1 = x1 + t21 * x21) + \",\" + (this._y1 = y1 + t21 * y21);\n }\n },\n arc: function(x, y, r, a0, a1, ccw) {\n x = +x, y = +y, r = +r;\n var dx = r * Math.cos(a0),\n dy = r * Math.sin(a0),\n x0 = x + dx,\n y0 = y + dy,\n cw = 1 ^ ccw,\n da = ccw ? a0 - a1 : a1 - a0;\n\n // Is the radius negative? Error.\n if (r < 0) throw new Error(\"negative radius: \" + r);\n\n // Is this path empty? Move to (x0,y0).\n if (this._x1 === null) {\n this._ += \"M\" + x0 + \",\" + y0;\n }\n\n // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0).\n else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) {\n this._ += \"L\" + x0 + \",\" + y0;\n }\n\n // Is this arc empty? We’re done.\n if (!r) return;\n\n // Does the angle go the wrong way? Flip the direction.\n if (da < 0) da = da % tau + tau;\n\n // Is this a complete circle? Draw two arcs to complete the circle.\n if (da > tauEpsilon) {\n this._ += \"A\" + r + \",\" + r + \",0,1,\" + cw + \",\" + (x - dx) + \",\" + (y - dy) + \"A\" + r + \",\" + r + \",0,1,\" + cw + \",\" + (this._x1 = x0) + \",\" + (this._y1 = y0);\n }\n\n // Is this arc non-empty? Draw an arc!\n else if (da > epsilon) {\n this._ += \"A\" + r + \",\" + r + \",0,\" + (+(da >= pi)) + \",\" + cw + \",\" + (this._x1 = x + r * Math.cos(a1)) + \",\" + (this._y1 = y + r * Math.sin(a1));\n }\n },\n rect: function(x, y, w, h) {\n this._ += \"M\" + (this._x0 = this._x1 = +x) + \",\" + (this._y0 = this._y1 = +y) + \"h\" + (+w) + \"v\" + (+h) + \"h\" + (-w) + \"Z\";\n },\n toString: function() {\n return this._;\n }\n};\n\nexport default path;\n","export default function(x) {\n return function constant() {\n return x;\n };\n}\n","export var abs = Math.abs;\nexport var atan2 = Math.atan2;\nexport var cos = Math.cos;\nexport var max = Math.max;\nexport var min = Math.min;\nexport var sin = Math.sin;\nexport var sqrt = Math.sqrt;\n\nexport var epsilon = 1e-12;\nexport var pi = Math.PI;\nexport var halfPi = pi / 2;\nexport var tau = 2 * pi;\n\nexport function acos(x) {\n return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);\n}\n\nexport function asin(x) {\n return x >= 1 ? halfPi : x <= -1 ? -halfPi : Math.asin(x);\n}\n","function Linear(context) {\n this._context = context;\n}\n\nLinear.prototype = {\n areaStart: function() {\n this._line = 0;\n },\n areaEnd: function() {\n this._line = NaN;\n },\n lineStart: function() {\n this._point = 0;\n },\n lineEnd: function() {\n if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();\n this._line = 1 - this._line;\n },\n point: function(x, y) {\n x = +x, y = +y;\n switch (this._point) {\n case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;\n case 1: this._point = 2; // proceed\n default: this._context.lineTo(x, y); break;\n }\n }\n};\n\nexport default function(context) {\n return new Linear(context);\n}\n","export function x(p) {\n return p[0];\n}\n\nexport function y(p) {\n return p[1];\n}\n","import {path} from \"d3-path\";\nimport constant from \"./constant\";\nimport curveLinear from \"./curve/linear\";\nimport {x as pointX, y as pointY} from \"./point\";\n\nexport default function() {\n var x = pointX,\n y = pointY,\n defined = constant(true),\n context = null,\n curve = curveLinear,\n output = null;\n\n function line(data) {\n var i,\n n = data.length,\n d,\n defined0 = false,\n buffer;\n\n if (context == null) output = curve(buffer = path());\n\n for (i = 0; i <= n; ++i) {\n if (!(i < n && defined(d = data[i], i, data)) === defined0) {\n if (defined0 = !defined0) output.lineStart();\n else output.lineEnd();\n }\n if (defined0) output.point(+x(d, i, data), +y(d, i, data));\n }\n\n if (buffer) return output = null, buffer + \"\" || null;\n }\n\n line.x = function(_) {\n return arguments.length ? (x = typeof _ === \"function\" ? _ : constant(+_), line) : x;\n };\n\n line.y = function(_) {\n return arguments.length ? (y = typeof _ === \"function\" ? _ : constant(+_), line) : y;\n };\n\n line.defined = function(_) {\n return arguments.length ? (defined = typeof _ === \"function\" ? _ : constant(!!_), line) : defined;\n };\n\n line.curve = function(_) {\n return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;\n };\n\n line.context = function(_) {\n return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;\n };\n\n return line;\n}\n","function sign(x) {\n return x < 0 ? -1 : 1;\n}\n\n// Calculate the slopes of the tangents (Hermite-type interpolation) based on\n// the following paper: Steffen, M. 1990. A Simple Method for Monotonic\n// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO.\n// NOV(II), P. 443, 1990.\nfunction slope3(that, x2, y2) {\n var h0 = that._x1 - that._x0,\n h1 = x2 - that._x1,\n s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0),\n s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0),\n p = (s0 * h1 + s1 * h0) / (h0 + h1);\n return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0;\n}\n\n// Calculate a one-sided slope.\nfunction slope2(that, t) {\n var h = that._x1 - that._x0;\n return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t;\n}\n\n// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations\n// \"you can express cubic Hermite interpolation in terms of cubic Bézier curves\n// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1\".\nfunction point(that, t0, t1) {\n var x0 = that._x0,\n y0 = that._y0,\n x1 = that._x1,\n y1 = that._y1,\n dx = (x1 - x0) / 3;\n that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1);\n}\n\nfunction MonotoneX(context) {\n this._context = context;\n}\n\nMonotoneX.prototype = {\n areaStart: function() {\n this._line = 0;\n },\n areaEnd: function() {\n this._line = NaN;\n },\n lineStart: function() {\n this._x0 = this._x1 =\n this._y0 = this._y1 =\n this._t0 = NaN;\n this._point = 0;\n },\n lineEnd: function() {\n switch (this._point) {\n case 2: this._context.lineTo(this._x1, this._y1); break;\n case 3: point(this, this._t0, slope2(this, this._t0)); break;\n }\n if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();\n this._line = 1 - this._line;\n },\n point: function(x, y) {\n var t1 = NaN;\n\n x = +x, y = +y;\n if (x === this._x1 && y === this._y1) return; // Ignore coincident points.\n switch (this._point) {\n case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;\n case 1: this._point = 2; break;\n case 2: this._point = 3; point(this, slope2(this, t1 = slope3(this, x, y)), t1); break;\n default: point(this, this._t0, t1 = slope3(this, x, y)); break;\n }\n\n this._x0 = this._x1, this._x1 = x;\n this._y0 = this._y1, this._y1 = y;\n this._t0 = t1;\n }\n}\n\nfunction MonotoneY(context) {\n this._context = new ReflectContext(context);\n}\n\n(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) {\n MonotoneX.prototype.point.call(this, y, x);\n};\n\nfunction ReflectContext(context) {\n this._context = context;\n}\n\nReflectContext.prototype = {\n moveTo: function(x, y) { this._context.moveTo(y, x); },\n closePath: function() { this._context.closePath(); },\n lineTo: function(x, y) { this._context.lineTo(y, x); },\n bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); }\n};\n\nexport function monotoneX(context) {\n return new MonotoneX(context);\n}\n\nexport function monotoneY(context) {\n return new MonotoneY(context);\n}\n","function Step(context, t) {\n this._context = context;\n this._t = t;\n}\n\nStep.prototype = {\n areaStart: function() {\n this._line = 0;\n },\n areaEnd: function() {\n this._line = NaN;\n },\n lineStart: function() {\n this._x = this._y = NaN;\n this._point = 0;\n },\n lineEnd: function() {\n if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y);\n if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();\n if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line;\n },\n point: function(x, y) {\n x = +x, y = +y;\n switch (this._point) {\n case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;\n case 1: this._point = 2; // proceed\n default: {\n if (this._t <= 0) {\n this._context.lineTo(this._x, y);\n this._context.lineTo(x, y);\n } else {\n var x1 = this._x * (1 - this._t) + x * this._t;\n this._context.lineTo(x1, this._y);\n this._context.lineTo(x1, y);\n }\n break;\n }\n }\n this._x = x, this._y = y;\n }\n};\n\nexport default function(context) {\n return new Step(context, 0.5);\n}\n\nexport function stepBefore(context) {\n return new Step(context, 0);\n}\n\nexport function stepAfter(context) {\n return new Step(context, 1);\n}\n","\r\n\r\n\r\n\r\nThis chroma.js-powered tool is here to help us mastering multi-hued, multi-stops color scales.
\r\nYou can also save your palette for later by bookmarking this page using {isMac ? 'cmd' : 'ctrl'}+d.
\r\nCreated by Gregor Aisch for the sake of better\r\n use of colors in maps and data visualizations. Feel free to fork on Github.
\r\nCreated by Gregor Aisch for the sake of better use of colors in maps and data visualizations. Feel free to fork on Github.