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1 #ifndef GEOM_H_
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2 #define GEOM_H_
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3
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4 #include <vmath/vmath.h>
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5
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6 class GeomShape;
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7
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8 struct HitPoint {
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9 float dist;
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10 Vector3 pos;
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11 Vector3 normal;
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12 const GeomShape *shape;
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13 void *data;
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14 };
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15
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16 class GeomShape {
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17 protected:
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18 enum Type { GEOM_UNKNOWN, GEOM_SPHERE, GEOM_PLANE } type;
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19
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20 public:
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21 GeomShape();
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22 virtual ~GeomShape();
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23
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24 virtual Type get_type() const;
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25
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26 virtual bool intersect(const Ray &ray, HitPoint *hit = 0) const = 0;
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27 virtual bool collide(const GeomShape *geom, HitPoint *hit = 0) const = 0;
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28
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29 virtual float distance(const Vector3 &pt) const = 0;
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30 virtual float distance_sq(const Vector3 &pt) const = 0;
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31 };
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32
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33 class Sphere : public GeomShape {
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34 public:
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35 Vector3 center;
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36 float radius;
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37
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38 Sphere();
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39 Sphere(const Vector3 &c, float rad);
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40
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41 bool intersect(const Ray &ray, HitPoint *hit = 0) const;
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42 bool collide(const GeomShape *geom, HitPoint *hit = 0) const;
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43
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44 float distance(const Vector3 &pt) const;
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45 float distance_sq(const Vector3 &pt) const;
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46 };
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47
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48 class Plane : public GeomShape {
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49 public:
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50 Vector3 normal;
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51 float dist;
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52
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53 Plane();
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54 Plane(const Vector3 &n, float d);
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55 Plane(float a, float b, float c, float d);
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56 Plane(const Vector3 &pos, const Vector3 &norm);
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57 Plane(const Vector3 &p1, const Vector3 &p2, const Vector3 &p3);
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58
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59 bool intersect(const Ray &ray, HitPoint *hit = 0) const;
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60 bool collide(const GeomShape *geom, HitPoint *hit = 0) const;
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61
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62 float distance(const Vector3 &pt) const;
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63 float distance_sq(const Vector3 &pt) const;
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64 };
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65
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66 #endif // GEOM_H_
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