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 contains(const Vector3 &pt) const = 0;

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

26 };

27

28 class Sphere : public GeomObject {

29 public:

30 Vector3 center;

31 float radius;

32

33 Sphere();

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

35

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

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

38

39 bool contains(const Vector3 &pt) const;

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

41 };

42

43 class AABox : public GeomObject {

44 public:

45 Vector3 min, max;

46

47 AABox();

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

49

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

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

52

53 bool contains(const Vector3 &pt) const;

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

55 };

56

57 class Plane : public GeomObject {

58 public:

59 Vector3 pt, normal;

60

61 Plane();

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

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

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

65

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

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

68

69 bool contains(const Vector3 &pt) const;

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

71 };

72

73 } // namespace goatgfx

74

75 #endif // GEOMOBJ_H_