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add zoom feature for graphs #21

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add zoom feature for graphs #21

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72 changes: 58 additions & 14 deletions e_mods/e_mods.srcs/sources_1/new/helpers/graphs.v
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Original file line number Diff line number Diff line change
Expand Up @@ -6,20 +6,26 @@ module graphs(
input signed [31:0] x_point1, y_point1, x_point2, y_point2, x_point3, y_point3,
input signed [31:0] x_point4, y_point4, x_point5, y_point5, x_point6, y_point6,
input signed [31:0] x_point7, y_point7, x_point8, y_point8, x_point9, y_point9,
input [11:0] mouse_xpos, input [11:0] mouse_ypos
input [11:0] mouse_xpos, input [11:0] mouse_ypos, mouse_left_click, mouse_right_click

);



wire signed [31:0] slope1, slope2, slope3, slope4, slope5, slope6;
wire signed [31:0] intercept1, intercept2, intercept3, intercept4, intercept5, intercept6;
reg [3:0] zoom_level = 1;


reg [6:0] x;
reg [5:0] y;

reg [6:0] cursor_x;
reg [5:0] cursor_y;

reg [11:0] prev_cursor_x, prev_cursor_y;
reg [11:0] delta_x, delta_y;

reg [6:0]scaled_x;
reg [5:0]scaled_y;


parameter scale = 128;
Expand All @@ -44,17 +50,49 @@ module graphs(

reg [15:0] calc_y1, calc_y2, calc_y3, calc_y4, calc_y5, calc_y6;

always @(posedge clk) begin
if (mouse_right_click && zoom_level == 1) begin
zoom_level <= 2;

prev_cursor_x <= mouse_xpos[11:3];
prev_cursor_y <= mouse_ypos[11:3];
end
else if (mouse_left_click && zoom_level == 2) begin
zoom_level <= 1;
end

end

always @(*) begin

if (zoom_level == 1) begin

x <= oled_pixel_index % 96;
y <= oled_pixel_index / 96;
end
else if (zoom_level == 2 && cursor_x < 48 && cursor_y < 32) begin
x <= ((oled_pixel_index % 96) / 2);
y <= ((oled_pixel_index / 96) / 2);
end else if (zoom_level == 2 && cursor_x < 48 && cursor_y >= 32) begin
x <= ((oled_pixel_index % 96) / 2);
y <= ((oled_pixel_index / 96) / 2) + 32;
end else if (zoom_level == 2 && cursor_x >= 48 && cursor_y < 32) begin
x <= ((oled_pixel_index % 96) / 2) + 48;
y <= ((oled_pixel_index / 96) / 2);
end else if (zoom_level == 2 && cursor_x >= 48 && cursor_y >= 32) begin
x <= ((oled_pixel_index % 96) / 2) + 48;
y <= ((oled_pixel_index / 96) / 2) + 32;

end


always @(*) begin
x <= oled_pixel_index % 96;
y <= oled_pixel_index / 96;



oled_pixel_data <= 16'h0000;

// Drawing axes
if (x == 10) oled_pixel_data <= 16'hFFFF; // White
if (y == 56) oled_pixel_data <= 16'hFFFF; // White
if (x == 10) oled_pixel_data <= 16'hFFFF;
if (y == 56) oled_pixel_data <= 16'hFFFF;


// Drawing the first graph in green
Expand All @@ -72,16 +110,21 @@ module graphs(
drawLine(x_point8, y_point8, x_point9, y_point9, slope6, intercept6, 16'hF800);
highlightPoints(x_point7, y_point7, x_point8, y_point8, x_point9, y_point9, 16'hFA10);

cursor_x <= mouse_xpos[11:3]; // Scaling
cursor_y <= mouse_ypos[11:3];

cursor_x <= mouse_xpos[11:3]; // Scaling
cursor_y <= mouse_ypos[11:3];








if (x == cursor_x && y == cursor_y) begin
oled_pixel_data <= 16'hFFFF; // White color for cursor
oled_pixel_data <= 16'hFFFF; // White
end

end
end


task drawLine;
Expand All @@ -96,6 +139,7 @@ module graphs(
endtask



task highlightPoints;
input [6:0] x1, y1, x2, y2, x3, y3;
input [15:0] pointColor;
Expand Down