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 contains(const Vector3 &pt) const = 0;

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

24 };

25

26 class Sphere : public GeomObject {

27 public:

28 Vector3 center;

29 float radius;

30

31 Sphere();

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

33

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

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

36

37 bool contains(const Vector3 &pt) const;

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 contains(const Vector3 &pt) const;

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

53 };

54

55 class Plane : public GeomObject {

56 public:

57 Vector3 pt, normal;

58

59 Plane();

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

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

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

63

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

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

66

67 bool contains(const Vector3 &pt) const;

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

69 };

70

71 #endif // GEOMOBJ_H_