src/math/rect.h

   1 #ifndef RECT_H_
   2 #define RECT_H_
   3
   4 #include <SDL2/SDL.h>
   5
   6 #include "math/point.h"
   7
   8 typedef enum rect_side_t {
   9     RECT_SIDE_LEFT = 0,
  10     RECT_SIDE_RIGHT,
  11     RECT_SIDE_TOP,
  12     RECT_SIDE_BOTTOM,
  13
  14     RECT_SIDE_N
  15 } rect_side_t;
  16
  17 typedef struct rect_t {
  18     float x, y, w, h;
  19 } rect_t;
  20
  21 typedef struct line_t {
  22     point_t p1;
  23     point_t p2;
  24 } line_t;
  25
  26 rect_t rect(float x, float y, float w, float h);
  27 rect_t rect_from_vecs(point_t position, vec_t size);
  28 rect_t rect_from_sdl(const SDL_Rect *rect);
  29
  30 rect_t rects_overlap_area(rect_t rect1, rect_t rect2);
  31
  32 int rect_contains_point(rect_t rect, point_t p);
  33
  34 int rects_overlap(rect_t rect1, rect_t rect2);
  35
  36 void rect_object_impact(rect_t object,
  37                         rect_t obstacle,
  38                         int *sides);
  39
  40 line_t rect_side(rect_t rect, rect_side_t side);
  41
  42 rect_t rect_from_point(point_t p, float w, float h);
  43
  44 float line_length(line_t line);
  45
  46 SDL_Rect rect_for_sdl(rect_t rect);
  47
  48 #endif  // RECT_H_