cybergrid

[vrfileman] / src / geom.h

diff --git a/src/geom.h b/src/geom.h
new file mode 100644 (file)
index 0000000..aabf266
--- /dev/null
+++ b/src/geom.h
@@ -0,0 +1,73 @@
+#ifndef GEOMOBJ_H_
+#define GEOMOBJ_H_
+
+#include "gmath/gmath.h"
+
+class GeomObject;
+class SceneNode;
+
+struct HitPoint {
+       float dist;                             //< parametric distance along the ray
+       Vec3 pos;                       //< position of intersection (orig + dir * dist)
+       Vec3 normal;                    //< normal at the point of intersection
+       const void *obj;                //< pointer to the intersected object
+       const SceneNode *node;
+       Ray ray;
+};
+
+class GeomObject {
+public:
+       virtual ~GeomObject();
+
+       virtual void set_union(const GeomObject *obj1, const GeomObject *obj2) = 0;
+       virtual void set_intersection(const GeomObject *obj1, const GeomObject *obj2) = 0;
+
+       virtual bool intersect(const Ray &ray, HitPoint *hit = 0) const = 0;
+};
+
+class Sphere : public GeomObject {
+public:
+       Vec3 center;
+       float radius;
+
+       Sphere();
+       Sphere(const Vec3 &center, float radius);
+
+       void set_union(const GeomObject *obj1, const GeomObject *obj2);
+       void set_intersection(const GeomObject *obj1, const GeomObject *obj2);
+
+       bool intersect(const Ray &ray, HitPoint *hit = 0) const;
+};
+
+class AABox : public GeomObject {
+public:
+       Vec3 min, max;
+
+       AABox();
+       AABox(const Vec3 &min, const Vec3 &max);
+
+       void set_union(const GeomObject *obj1, const GeomObject *obj2);
+       void set_intersection(const GeomObject *obj1, const GeomObject *obj2);
+
+       bool intersect(const Ray &ray, HitPoint *hit = 0) const;
+};
+
+class Plane : public GeomObject {
+public:
+       Vec3 pt, normal;
+
+       Plane();
+       Plane(const Vec3 &pt, const Vec3 &normal);
+       Plane(const Vec3 &p1, const Vec3 &p2, const Vec3 &p3);
+       Plane(const Vec3 &normal, float dist);
+
+       void set_union(const GeomObject *obj1, const GeomObject *obj2);
+       void set_intersection(const GeomObject *obj1, const GeomObject *obj2);
+
+       bool intersect(const Ray &ray, HitPoint *hit = 0) const;
+};
+
+float sphere_distance(const Vec3 &cent, float rad, const Vec3 &pt);
+float capsule_distance(const Vec3 &a, float ra, const Vec3 &b, float rb, const Vec3 &pt);
+
+#endif // GEOMOBJ_H_