Initial commit.

blitz3d/frustum.h

@@ -0,0 +1,32 @@
+
+#ifndef FRUSTUM_H
+#define FRUSTUM_H
+
+#include "geom.h"
+
+class Frustum{
+public:
+	enum{
+		VERT_TLNEAR=0,VERT_TRNEAR,VERT_BRNEAR,VERT_BLNEAR,
+		VERT_TLFAR,VERT_TRFAR,VERT_BRFAR,VERT_BLFAR,VERT_EYE
+	};
+	enum{
+		PLANE_TOP=0,PLANE_LEFT,PLANE_BOTTOM,PLANE_RIGHT,PLANE_NEAR,PLANE_FAR
+	};
+	Frustum();
+	Frustum( float nr,float fr,float w,float h );
+	Frustum( const Frustum &f,const Transform &t );
+
+	bool cull( const Box &box )const;
+	bool cull( const Vector vecs[],int cnt )const;
+
+	const Plane &getPlane( int n )const{ return planes[n]; }
+	const Vector &getVertex( int n )const{ return verts[n]; }
+
+private:
+	Plane planes[6];
+	Vector verts[9];
+	void makePlanes();
+};
+
+#endif