Map2Globe/trig-list.h at main · fra99le/Map2Globe · GitHub

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/*
 * trig-list.h
 * Map2Globe: Image to globe converter.
 *
 * Copyright (c) 2020-2024 Bryan Franklin. All rights reserved.
 */
#ifndef TRIG_LIST_H
#define TRIG_LIST_H

extern const double epsilon;

typedef struct trig {
    double x[3], y[3], z[3];    /* vertex coordinates */
    double nx[3], ny[3], nz[3];   /* vertex normals */
    int trigId;         /* position of trig in list */
    int groupId;
    int neighbor[3];    /* position in list of neighboring triangles */
} trig_t;


void trig_init(trig_t *trig);
void trig_fill(trig_t *trig,
                    double x1, double y1, double z1,
                    double x2, double y2, double z2,
                    double x3, double y3, double z3);
void trig_unitize_normals(trig_t *trig);
void trig_set_normals(trig_t *trig,
                    double nx1, double ny1, double nz1,
                    double nx2, double ny2, double nz2,
                    double nx3, double ny3, double nz3);
void trig_get_normal(trig_t *trig);
void trig_set_group(trig_t *trig, int id);
void trig_move(trig_t *trig, double dx, double dy, double dz);
void trig_scale(trig_t *trig, double sx, double sy, double sz);
void trig_rotate_axial(trig_t *trig, int axis, double rad);
void trig_rotate_axial_around(trig_t *trig, int axis, double rad, double cx, double cy, double cz);
void trig_export_stl(FILE *fp, trig_t *trig);


typedef struct trig_list {
    int num;    /* number of triangles in list */
    int cap;    /* allocated capacity of list */
    trig_t *trig;   /* list buffer */
} trig_list_t;


int trig_list_init(trig_list_t *list);
void trig_list_free(trig_list_t *list);
void trig_list_clear(trig_list_t *list);
void trig_list_resize(trig_list_t *list);
int trig_list_add(trig_list_t *list,
                    double x1, double y1, double z1,
                    double x2, double y2, double z2,
                    double x3, double y3, double z3);
int trig_list_remove(trig_list_t *list, int index);
int trig_list_append(trig_list_t *list, trig_t *t);
void trig_list_concatenate(trig_list_t *dst, trig_list_t *src);
void trig_list_move(trig_list_t *list, double dx, double dy, double dz);
void trig_list_scale(trig_list_t *list, double sx, double sy, double sz);
void trig_list_rotate_axial(trig_list_t *list, int axis, double rad);
void trig_list_rotate_axial_around(trig_list_t *list, int axis, double rad, double cx, double cy, double cz);
void trig_list_export_stl(FILE *fp, trig_list_t *list, char *name);
void trig_list_set_groupid(trig_list_t *list, int id);
void trig_list_replace_groupid(trig_list_t *list, int id, int target_id);
void trig_update_neighbors(trig_t *trig, trig_list_t *list);
void trig_list_update_neighbors(trig_list_t *list);


#endif /* TRIG_LIST_H */