1 #ifndef GEOM_H_

2 #define GEOM_H_

3

4 #include "vector.h"

5 #include "ray.h"

6

7 typedef struct {

8 vec3_t norm;

9 scalar_t d;

10 } plane_t;

11

12 typedef struct {

13 vec3_t pos;

14 scalar_t rad;

15 } sphere_t;

16

17 typedef struct {

18 vec3_t min, max;

19 } aabox_t;

20

21 #ifdef __cplusplus

22 extern "C" {

23 #endif

24

25 /* planes are good... you need planes, yes you do */

26 plane_t plane_cons(scalar_t nx, scalar_t ny, scalar_t nz, scalar_t d);

27 plane_t plane_poly(vec3_t v0, vec3_t v1, vec3_t v2);

28 plane_t plane_ptnorm(vec3_t pt, vec3_t normal);

29

30 plane_t plane_invert(plane_t p);

31

32 scalar_t plane_signed_dist(plane_t plane, vec3_t pt);

33 scalar_t plane_dist(plane_t plane, vec3_t pt);

34 vec3_t plane_point(plane_t plane);

35

36 int plane_ray_intersect(ray_t ray, plane_t plane, scalar_t *pos);

37

38 /* spheres always come in handy */

39 sphere_t sphere_cons(scalar_t x, scalar_t y, scalar_t z, scalar_t rad);

40

41 int sphere_ray_intersect(ray_t ray, sphere_t sph, scalar_t *pos);

42 int sphere_sphere_intersect(sphere_t sph1, sphere_t sph2, scalar_t *pos, scalar_t *rad);

43

44 #ifdef __cplusplus

45 }

46

47 /* TODO

48 class Plane : public plane_t {

49 public:

50 };

51 */

52

53 #endif

54

55 #endif /* GEOM_H_ */