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Torque/SDK/lib/maxsdk31/shadbuf.h

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+/**********************************************************************
+ *<
+	FILE: shadbuf.h : Shadow buffer renderer.
+
+	DESCRIPTION:
+
+	CREATED BY: Dan Silva
+
+	HISTORY:
+
+ *>	Copyright (c) 1994, All Rights Reserved.
+ **********************************************************************/
+
+#ifndef __SHADBUF__H
+#define __SHADBUF__H
+
+class ShadBufRenderer {
+	public:
+		// Compute a shadow Z buffer for the current scene from the viewpoint of the light.
+		// NOTE: The computed shadow buffer has positive Z values as you go away from the light, which is
+		//       the reverse of the MAX coord system.
+		// Returns the number of objects that the shadow volume intersected. If this value is 0,
+		//   the shadow buffer can be freed to save memory.
+		virtual int Render(
+			RendContext &rc, 
+			RenderGlobalContext *RGC, 
+			float *buf,         // preallocated (shadsize*shadsize)  floats 
+			BOOL parallel,		// parallel or perspective projection
+			int shadsize,      // size of the buffer (shadsize by shadsize pixels)
+			float param,   	   // persp:field-of-view (radians) -- parallel : width in world coords
+			float aspect,      // aspect ration of the buffer projection 
+			float clipDist,    // don't consider objects farther than this from light
+			ObjLightDesc *ltDesc, // descriptor for light that was passed in to CreateShadowGenerator
+			Matrix3 worldToLight  // world to light transfor for light
+			)=0;
+		virtual	float Furthest()=0; // after render, this gives the farthest Z in the buffer
+		virtual float Closest()=0;  // after render, this gives the closest Z in the buffer.
+		virtual void DeleteThis()=0;
+	};
+
+CoreExport ShadBufRenderer *NewDefaultShadBufRenderer();
+
+#endif __SHADBUF__H