1 #ifndef GEOMOBJ_H_

2 #define GEOMOBJ_H_

3

4 #include "vmath/vmath.h"

5

6 class GeomObject;

7

8 struct HitPoint {

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

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

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

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

13 };

14

15 class GeomObject {

16 public:

17 virtual ~GeomObject();

18

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

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

21

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

23 };

24

25 class Sphere : public GeomObject {

26 public:

27 Vector3 center;

28 float radius;

29

30 Sphere();

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

32

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

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

35

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

37 };

38

39 class AABox : public GeomObject {

40 public:

41 Vector3 min, max;

42

43 AABox();

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

45

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

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

48

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

50 };

51

52 class Plane : public GeomObject {

53 public:

54 Vector3 pt, normal;

55

56 Plane();

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

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

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

60

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

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

63

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

65 };

66

67 #endif // GEOMOBJ_H_