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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _FRUSTUM_H_
#define _FRUSTUM_H_
#include "Vector3.h"
#include "Plane.h"
/**
* Terrain Renderer using texture splatting and geomipmapping.
* The frustum clips the polygons against a certain convex space.
*/
class Frustum
{
public:
void CalcCameraPlanes(Vector3* base, Vector3* right, Vector3* up, Vector3* front, float tanHalfFov, float aspect);
void InversePlanes ();
enum VisType { Inside, Outside, Partial };
VisType IsBoxVisible(const Vector3& min, const Vector3& max); ///< 3D test
VisType IsPointVisible(const Vector3& pt);
void Draw();
std::vector<Plane> planes;
Vector3 base;
Vector3 pos[4];
Vector3 front;
Vector3 right;
Vector3 up;
};
#endif // _FRUSTUM_H_
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