www.pudn.com > 3dterrain.zip > Frustum.h

#ifndef _FRUSTUM_H 
#define _FRUSTUM_H 
 
#include "init.h" 
#include  
 
// This will allow us to create an object to keep track of our frustum 
class CFrustum { 
 
public: 
 
	// Call this every time the camera moves to update the frustum 
	void CalculateFrustum(); 
 
	// This takes a 3D point and returns TRUE if it's inside of the frustum 
	bool PointInFrustum(float x, float y, float z); 
 
	// This takes a 3D point and a radius and returns TRUE if the sphere is inside of the frustum 
	bool SphereInFrustum(float x, float y, float z, float radius); 
 
	// This takes the center and half the length of the cube. 
	bool CubeInFrustum( float x, float y, float z, float size ); 
	int CubeInFrustum2( float x, float y, float z, float size ); 
 
//private: 
 
	// This holds the A B C and D values for each side of our frustum. 
	float m_Frustum[6][4]; 
}; 
 
 
#endif 
 
 
///////////////////////////////////////////////////////////////////////////////// 
// 
// * QUICK NOTES *  
// 
// This file holds the frustum class prototypes. 
//  
//  
// Ben Humphrey (DigiBen) 
// Game Programmer 
// DigiBen@GameTutorials.com 
// Co-Web Host of www.GameTutorials.com 
// 
//