//===========================================================================
// boxvfc.hpp : AABB (axis-aligned bounding box) View Frustum Culler (VFC)
//===========================================================================

#include "vec3f.hpp"
#include "plane.hpp"

// POSSIBLE TYPES OF OVERLAP
#define COMPLETEIN -1
#define PARTIAL 0
#define COMPLETEOUT 1

void SetFrustum(Vec3f& Eye, Vec3f& ViewDir, Vec3f& ViewUp, float Yfov, float Aspect);
int BoxOverlapVF(Vec3f& Min, Vec3f& Max);

inline int OverlapPlane(Plane& P, Vec3f& m, Vec3f& M);
inline int RayIsectAABB(Vec3f& Start, Vec3f& Dir, Vec3f& Min, Vec3f& Max,
                        float& InT, float& OutT);
inline int EdgeIsectVF(Vec3f& Start, Vec3f& End);