1 #ifndef GEOMOBJ_H_

2 #define GEOMOBJ_H_

3

4 #include "vmath/vmath.h"

5

6 namespace goatgfx {

7

8 class GeomObject;

9

10 struct HitPoint {

11 float dist; //< parametric distance along the ray

12 Vector3 pos; //< position of intersection (orig + dir * dist)

13 Vector3 normal; //< normal at the point of intersection

14 const void *obj; //< pointer to the intersected object

15 };

16

17 class GeomObject {

18 public:

19 virtual ~GeomObject();

20

21 virtual void set_union(const GeomObject *obj1, const GeomObject *obj2) = 0;

22 virtual void set_intersection(const GeomObject *obj1, const GeomObject *obj2) = 0;

23

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

25 };

26

27 class Sphere : public GeomObject {

28 public:

29 Vector3 center;

30 float radius;

31

32 Sphere();

33 Sphere(const Vector3 &center, float radius);

34

35 void set_union(const GeomObject *obj1, const GeomObject *obj2);

36 void set_intersection(const GeomObject *obj1, const GeomObject *obj2);

37

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

39 };

40

41 class AABox : public GeomObject {

42 public:

43 Vector3 min, max;

44

45 AABox();

46 AABox(const Vector3 &min, const Vector3 &max);

47

48 void set_union(const GeomObject *obj1, const GeomObject *obj2);

49 void set_intersection(const GeomObject *obj1, const GeomObject *obj2);

50

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

52 };

53

54 class Plane : public GeomObject {

55 public:

56 Vector3 pt, normal;

57

58 Plane();

59 Plane(const Vector3 &pt, const Vector3 &normal);

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

61 Plane(const Vector3 &normal, float dist);

62

63 void set_union(const GeomObject *obj1, const GeomObject *obj2);

64 void set_intersection(const GeomObject *obj1, const GeomObject *obj2);

65

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

67 };

68

69 } // namespace goatgfx

70

71 #endif // GEOMOBJ_H_