48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
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//***********************************************************************//
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// //
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// - "Talk to me like I'm a 3 year old!" Programming Lessons - //
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// //
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// $Author: DigiBen digiben@gametutorials.com //
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// //
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// $Program: Frustum Culling //
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// //
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// $Description: Demonstrates checking if shapes are in view //
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// //
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// $Date: 8/28/01 //
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// //
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//***********************************************************************//
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#ifndef DIGIBEN_FRUSTUM
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#define DIGIBEN_FRUSTUM
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namespace Util {
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// This will allow us to create an object to keep track of our frustum
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class CFrustum {
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public:
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// Call this every time the camera moves to update the frustum
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void CalculateFrustum();
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// This takes a 3D point and returns TRUE if it's inside of the frustum
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bool PointInFrustum(float x, float y, float z);
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// This takes a 3D point and a radius and returns TRUE if the sphere is inside of the frustum
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bool SphereInFrustum(float x, float y, float z, float radius);
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// This takes the center and half the length of the cube.
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bool CubeInFrustum( float x, float y, float z, float size );
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bool BlockInFrustum(float x, float z, float size);
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private:
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// This holds the A B C and D values for each side of our frustum.
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float m_Frustum[6][4];
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};
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}
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#endif
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