1 #ifndef GEOM_H_

2 #define GEOM_H_

3

4 #include <vmath/vmath.h>

5

6 class GeomShape;

7

8 struct HitPoint {

9 float dist;

10 Vector3 pos;

11 Vector3 normal;

12 const GeomShape *shape;

13 void *data;

14 };

15

16 class GeomShape {

17 protected:

18 enum Type { GEOM_UNKNOWN, GEOM_SPHERE, GEOM_PLANE } type;

19

20 public:

21 GeomShape();

22 virtual ~GeomShape();

23

24 virtual Type get_type() const;

25

26 virtual bool intersect(const Ray &ray, HitPoint *hit = 0) const = 0;

27 virtual bool collide(const GeomShape *geom, HitPoint *hit = 0) const = 0;

28

29 virtual float distance(const Vector3 &pt) const = 0;

30 virtual float distance_sq(const Vector3 &pt) const = 0;

31 };

32

33 class Sphere : public GeomShape {

34 public:

35 Vector3 center;

36 float radius;

37

38 Sphere();

39 Sphere(const Vector3 &c, float rad);

40

41 bool intersect(const Ray &ray, HitPoint *hit = 0) const;

42 bool collide(const GeomShape *geom, HitPoint *hit = 0) const;

43

44 float distance(const Vector3 &pt) const;

45 float distance_sq(const Vector3 &pt) const;

46 };

47

48 class Plane : public GeomShape {

49 public:

50 Vector3 normal;

51 float dist;

52

53 Plane();

54 Plane(const Vector3 &n, float d);

55 Plane(float a, float b, float c, float d);

56 Plane(const Vector3 &pos, const Vector3 &norm);

57 Plane(const Vector3 &p1, const Vector3 &p2, const Vector3 &p3);

58

59 bool intersect(const Ray &ray, HitPoint *hit = 0) const;

60 bool collide(const GeomShape *geom, HitPoint *hit = 0) const;

61

62 float distance(const Vector3 &pt) const;

63 float distance_sq(const Vector3 &pt) const;

64 };

65

66 #endif // GEOM_H_