lots of small changes that didn't get checked in

1 files changed, 1275 insertions, 0 deletions

diff --git a/src/frustum.c b/src/frustum.c
new file mode 100644
index 0000000..a2bc3c1
--- /dev/null
+++ b/src/frustum.c
@@ -0,0 +1,1275 @@
+/*
+ * KJL 15:13:43 7/17/97 - frustrum.c
+ *
+ * Contains all the functions connected
+ * to the view frustrum and clipping
+ *
+ */
+#include "3dc.h"
+#include "module.h"
+#include "inline.h"
+
+#include "stratdef.h"
+#include "gamedef.h"
+
+#include "kshape.h"
+#include "kzsort.h"
+#include "frustum.h"
+
+#include "particle.h"
+
+#define UseLocalAssert Yes
+#include "ourasert.h"
+
+/*KJL****************************************************************************************
+*  										G L O B A L S 	            					    *
+****************************************************************************************KJL*/
+extern VECTORCH RotatedPts[];
+
+extern DISPLAYBLOCK *Global_ODB_Ptr;
+extern SHAPEHEADER *Global_ShapeHeaderPtr;
+extern int *Global_ShapePoints;
+extern int *Global_ShapeNormals;
+
+extern VECTORCH LocalView;
+
+#define FAR_Z_CLIP 0
+#define FAR_Z_CLIP_RANGE 49000
+/*KJL****************************************************************************************
+*                                    P R O T O T Y P E S	                                *
+****************************************************************************************KJL*/
+/* GOURAUD POLYGON CLIPPING */
+void (*GouraudPolygon_ClipWithNegativeX)(void);
+void (*GouraudPolygon_ClipWithPositiveY)(void);
+void (*GouraudPolygon_ClipWithNegativeY)(void);
+void (*GouraudPolygon_ClipWithPositiveX)(void);
+
+/* TEXTURED POLYGON CLIPPING */
+void (*TexturedPolygon_ClipWithNegativeX)(void);
+void (*TexturedPolygon_ClipWithPositiveY)(void);
+void (*TexturedPolygon_ClipWithNegativeY)(void);
+void (*TexturedPolygon_ClipWithPositiveX)(void);
+
+/* GOURAUD TEXTURED POLYGON CLIPPING */
+void (*GouraudTexturedPolygon_ClipWithNegativeX)(void);
+void (*GouraudTexturedPolygon_ClipWithPositiveY)(void);
+void (*GouraudTexturedPolygon_ClipWithNegativeY)(void);
+void (*GouraudTexturedPolygon_ClipWithPositiveX)(void);
+
+/* FRUSTRUM TESTS */
+int (*ObjectWithinFrustrum)(DISPLAYBLOCK *dbPtr);
+int (*ObjectCompletelyWithinFrustrum)(DISPLAYBLOCK *dbPtr);
+int (*VertexWithinFrustrum)(RENDERVERTEX *vertexPtr);
+void (*TestVerticesWithFrustrum)(void);
+
+
+static void GouraudPolygon_Norm_ClipWithNegativeX(void);
+static void GouraudPolygon_Wide_ClipWithNegativeX(void);
+static void GouraudPolygon_Norm_ClipWithPositiveY(void);
+static void GouraudPolygon_Wide_ClipWithPositiveY(void);
+static void GouraudPolygon_Norm_ClipWithNegativeY(void);
+static void GouraudPolygon_Wide_ClipWithNegativeY(void);
+static void GouraudPolygon_Norm_ClipWithPositiveX(void);
+static void GouraudPolygon_Wide_ClipWithPositiveX(void);
+
+static void TexturedPolygon_Norm_ClipWithNegativeX(void);
+static void TexturedPolygon_Wide_ClipWithNegativeX(void);
+static void TexturedPolygon_Norm_ClipWithPositiveY(void);
+static void TexturedPolygon_Wide_ClipWithPositiveY(void);
+static void TexturedPolygon_Norm_ClipWithNegativeY(void);
+static void TexturedPolygon_Wide_ClipWithNegativeY(void);
+static void TexturedPolygon_Norm_ClipWithPositiveX(void);
+static void TexturedPolygon_Wide_ClipWithPositiveX(void);
+
+static void GouraudTexturedPolygon_Norm_ClipWithNegativeX(void);
+static void GouraudTexturedPolygon_Wide_ClipWithNegativeX(void);
+static void GouraudTexturedPolygon_Norm_ClipWithPositiveY(void);
+static void GouraudTexturedPolygon_Wide_ClipWithPositiveY(void);
+static void GouraudTexturedPolygon_Norm_ClipWithNegativeY(void);
+static void GouraudTexturedPolygon_Wide_ClipWithNegativeY(void);
+static void GouraudTexturedPolygon_Norm_ClipWithPositiveX(void);
+static void GouraudTexturedPolygon_Wide_ClipWithPositiveX(void);
+
+static int VertexWithin_Norm_Frustrum(RENDERVERTEX *vertexPtr);
+static int VertexWithin_Wide_Frustrum(RENDERVERTEX *vertexPtr);
+static int ObjectWithin_Norm_Frustrum(DISPLAYBLOCK *dbPtr);
+static int ObjectWithin_Wide_Frustrum(DISPLAYBLOCK *dbPtr);
+static int ObjectCompletelyWithin_Norm_Frustrum(DISPLAYBLOCK *dbPtr);
+static int ObjectCompletelyWithin_Wide_Frustrum(DISPLAYBLOCK *dbPtr);
+static void TestVerticesWith_Norm_Frustrum(void);
+static void TestVerticesWith_Wide_Frustrum(void);
+
+/*KJL****************************************************************************************
+*                                     F U N C T I O N S	                                    *
+****************************************************************************************KJL*/
+void SetFrustrumType(enum FrustrumType frustrumType)
+{
+	switch (frustrumType)
+	{
+		default:
+  		case FRUSTRUM_TYPE_NORMAL:
+		{
+			/* GOURAUD POLYGON CLIPPING */
+			GouraudPolygon_ClipWithNegativeX = GouraudPolygon_Norm_ClipWithNegativeX;
+			GouraudPolygon_ClipWithPositiveY = GouraudPolygon_Norm_ClipWithPositiveY;
+			GouraudPolygon_ClipWithNegativeY = GouraudPolygon_Norm_ClipWithNegativeY;
+			GouraudPolygon_ClipWithPositiveX = GouraudPolygon_Norm_ClipWithPositiveX;
+
+			/* TEXTURED POLYGON CLIPPING */
+			TexturedPolygon_ClipWithNegativeX = TexturedPolygon_Norm_ClipWithNegativeX;
+			TexturedPolygon_ClipWithPositiveY = TexturedPolygon_Norm_ClipWithPositiveY;
+			TexturedPolygon_ClipWithNegativeY = TexturedPolygon_Norm_ClipWithNegativeY;
+			TexturedPolygon_ClipWithPositiveX = TexturedPolygon_Norm_ClipWithPositiveX;
+
+			/* GOURAUD TEXTURED POLYGON CLIPPING */
+			GouraudTexturedPolygon_ClipWithNegativeX = GouraudTexturedPolygon_Norm_ClipWithNegativeX;
+			GouraudTexturedPolygon_ClipWithPositiveY = GouraudTexturedPolygon_Norm_ClipWithPositiveY;
+			GouraudTexturedPolygon_ClipWithNegativeY = GouraudTexturedPolygon_Norm_ClipWithNegativeY;
+			GouraudTexturedPolygon_ClipWithPositiveX = GouraudTexturedPolygon_Norm_ClipWithPositiveX;
+
+			/* FRUSTRUM TESTS */
+			TestVerticesWithFrustrum = TestVerticesWith_Norm_Frustrum;
+			ObjectWithinFrustrum = ObjectWithin_Norm_Frustrum;
+			ObjectCompletelyWithinFrustrum = ObjectCompletelyWithin_Norm_Frustrum;
+			VertexWithinFrustrum = VertexWithin_Norm_Frustrum;
+
+			break;
+		}
+
+		case FRUSTRUM_TYPE_WIDE:
+		{
+			/* GOURAUD POLYGON CLIPPING */
+			GouraudPolygon_ClipWithNegativeX = GouraudPolygon_Wide_ClipWithNegativeX;
+			GouraudPolygon_ClipWithPositiveY = GouraudPolygon_Wide_ClipWithPositiveY;
+			GouraudPolygon_ClipWithNegativeY = GouraudPolygon_Wide_ClipWithNegativeY;
+			GouraudPolygon_ClipWithPositiveX = GouraudPolygon_Wide_ClipWithPositiveX;
+
+			/* TEXTURED POLYGON CLIPPING */
+			TexturedPolygon_ClipWithNegativeX = TexturedPolygon_Wide_ClipWithNegativeX;
+			TexturedPolygon_ClipWithPositiveY = TexturedPolygon_Wide_ClipWithPositiveY;
+			TexturedPolygon_ClipWithNegativeY = TexturedPolygon_Wide_ClipWithNegativeY;
+			TexturedPolygon_ClipWithPositiveX = TexturedPolygon_Wide_ClipWithPositiveX;
+
+			/* GOURAUD TEXTURED POLYGON CLIPPING */
+			GouraudTexturedPolygon_ClipWithNegativeX = GouraudTexturedPolygon_Wide_ClipWithNegativeX;
+			GouraudTexturedPolygon_ClipWithPositiveY = GouraudTexturedPolygon_Wide_ClipWithPositiveY;
+			GouraudTexturedPolygon_ClipWithNegativeY = GouraudTexturedPolygon_Wide_ClipWithNegativeY;
+			GouraudTexturedPolygon_ClipWithPositiveX = GouraudTexturedPolygon_Wide_ClipWithPositiveX;
+
+			/* FRUSTRUM TESTS */
+			TestVerticesWithFrustrum = TestVerticesWith_Wide_Frustrum;
+			ObjectWithinFrustrum = ObjectWithin_Wide_Frustrum;
+			ObjectCompletelyWithinFrustrum = ObjectCompletelyWithin_Wide_Frustrum;
+			VertexWithinFrustrum = VertexWithin_Wide_Frustrum;
+			
+			break;
+		}
+	}
+}
+
+/* clipping code macros - these are used as building blocks to assemble
+clipping fns for different polygon types with the minimum of fuss */
+#define ZCLIPPINGVALUE 4
+//64
+#define Clip_Z_Test(v) (ZCLIPPINGVALUE <= (v)->Z) 
+#define Clip_NX_Test(v) (-(v)->X <= (v)->Z)
+#define Clip_PX_Test(v) ((v)->X <= (v)->Z)
+#define Clip_NY_Test(v) (-(v)->Y <= (v)->Z)
+#define Clip_PY_Test(v) ((v)->Y <= (v)->Z)	  
+
+
+#define Clip_LoopStart(b) \
+	do \
+	{ \
+		RENDERVERTEX *nextVertexPtr; \
+		int nextVertexInside; \
+ \
+		/* setup pointer to next vertex, wrapping round if necessary */ \
+		if (!--verticesLeft) \
+		{ \
+			nextVertexPtr = (b); \
+		} \
+		else  \
+		{ \
+			nextVertexPtr = curVertexPtr+1; \
+		} \
+ \
+		/* if current vertex is inside the plane, output it */ \
+		if (curVertexInside) \
+		{ \
+			numberOfPointsOutputted++; \
+			*outputVerticesPtr++ = *curVertexPtr; \
+  		} \
+ \
+		/* test if next vertex is inside the plane */ \
+			nextVertexInside =  
+
+#define Clip_Z_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(ZCLIPPINGVALUE - curVertexPtr->Z), \
+				(nextVertexPtr->Z - curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X); \
+			outputVerticesPtr->Y = curVertexPtr->Y + MUL_FIXED(lambda,nextVertexPtr->Y-curVertexPtr->Y); \
+			outputVerticesPtr->Z = ZCLIPPINGVALUE; 
+
+#define Clip_NX_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(curVertexPtr->Z + curVertexPtr->X), \
+				-(nextVertexPtr->X-curVertexPtr->X) - (nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X); \
+			outputVerticesPtr->Z = -outputVerticesPtr->X; \
+			outputVerticesPtr->Y = curVertexPtr->Y + MUL_FIXED(lambda,nextVertexPtr->Y-curVertexPtr->Y);
+
+#define Clip_PX_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(curVertexPtr->Z - curVertexPtr->X), \
+				(nextVertexPtr->X-curVertexPtr->X) - (nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X); \
+			outputVerticesPtr->Z = outputVerticesPtr->X; \
+			outputVerticesPtr->Y = curVertexPtr->Y + MUL_FIXED(lambda,nextVertexPtr->Y-curVertexPtr->Y);
+
+#define Clip_NY_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(curVertexPtr->Z + curVertexPtr->Y), \
+				-(nextVertexPtr->Y-curVertexPtr->Y) - (nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->Z = curVertexPtr->Z + MUL_FIXED(lambda,nextVertexPtr->Z-curVertexPtr->Z); \
+			outputVerticesPtr->Y = -(outputVerticesPtr->Z); \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X);
+
+#define Clip_PY_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(curVertexPtr->Z - curVertexPtr->Y), \
+				(nextVertexPtr->Y-curVertexPtr->Y) - (nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->Z = curVertexPtr->Z + MUL_FIXED(lambda,nextVertexPtr->Z-curVertexPtr->Z); \
+			outputVerticesPtr->Y = (outputVerticesPtr->Z); \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X);
+
+#define Clip_OutputUV \
+			outputVerticesPtr->U = curVertexPtr->U + MUL_FIXED(lambda,nextVertexPtr->U-curVertexPtr->U); \
+			outputVerticesPtr->V = curVertexPtr->V + MUL_FIXED(lambda,nextVertexPtr->V-curVertexPtr->V); 
+
+#define Clip_OutputI \
+			outputVerticesPtr->A = curVertexPtr->A + MUL_FIXED(lambda,nextVertexPtr->A-curVertexPtr->A); \
+			outputVerticesPtr->R = curVertexPtr->R + MUL_FIXED(lambda,nextVertexPtr->R-curVertexPtr->R); \
+			outputVerticesPtr->G = curVertexPtr->G + MUL_FIXED(lambda,nextVertexPtr->G-curVertexPtr->G); \
+			outputVerticesPtr->B = curVertexPtr->B + MUL_FIXED(lambda,nextVertexPtr->B-curVertexPtr->B); \
+			outputVerticesPtr->SpecularR = curVertexPtr->SpecularR + MUL_FIXED(lambda,nextVertexPtr->SpecularR-curVertexPtr->SpecularR); \
+			outputVerticesPtr->SpecularG = curVertexPtr->SpecularG + MUL_FIXED(lambda,nextVertexPtr->SpecularG-curVertexPtr->SpecularG); \
+			outputVerticesPtr->SpecularB = curVertexPtr->SpecularB + MUL_FIXED(lambda,nextVertexPtr->SpecularB-curVertexPtr->SpecularB); 
+
+#define Clip_LoopEnd(b) \
+			numberOfPointsOutputted++; \
+			outputVerticesPtr++; \
+		} \
+ \
+		/* okay, now the current vertex becomes what was the next vertex */ \
+		curVertexPtr = nextVertexPtr; \
+		curVertexInside = nextVertexInside; \
+	} \
+	while(verticesLeft); \
+ \
+	RenderPolygon.NumberOfVertices = numberOfPointsOutputted; 
+
+/* Wide screen versions of clip macros */
+
+#define Clip_Wide_NX_Test(v) (-(v)->X <= (v)->Z*2)
+#define Clip_Wide_PX_Test(v) ((v)->X <= (v)->Z*2)
+#define Clip_Wide_NY_Test(v) (-(v)->Y <= (v)->Z*2)
+#define Clip_Wide_PY_Test(v) ((v)->Y <= (v)->Z*2)	  
+#define Clip_Wide_NX_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(-2*curVertexPtr->Z - curVertexPtr->X), \
+				(nextVertexPtr->X-curVertexPtr->X) - (-2)*(nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X); \
+			outputVerticesPtr->Z = -outputVerticesPtr->X/2; \
+			outputVerticesPtr->Y = curVertexPtr->Y + MUL_FIXED(lambda,nextVertexPtr->Y-curVertexPtr->Y);
+
+#define Clip_Wide_PX_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(2*curVertexPtr->Z - curVertexPtr->X), \
+				(nextVertexPtr->X-curVertexPtr->X) - 2*(nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X); \
+			outputVerticesPtr->Z = outputVerticesPtr->X/2; \
+			outputVerticesPtr->Y = curVertexPtr->Y + MUL_FIXED(lambda,nextVertexPtr->Y-curVertexPtr->Y);
+
+#define Clip_Wide_NY_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(2*curVertexPtr->Z + curVertexPtr->Y), \
+				-(nextVertexPtr->Y-curVertexPtr->Y) - 2*(nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->Z = curVertexPtr->Z + MUL_FIXED(lambda,nextVertexPtr->Z-curVertexPtr->Z); \
+			outputVerticesPtr->Y = -(outputVerticesPtr->Z*2); \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X);
+
+#define Clip_Wide_PY_OutputXYZ \
+		/* if one is in, and the other is out, output a clipped vertex */ \
+		if (nextVertexInside != curVertexInside) \
+		{ \
+			int lambda; \
+ \
+			lambda = DIV_FIXED \
+			( \
+				(2*curVertexPtr->Z - curVertexPtr->Y), \
+				(nextVertexPtr->Y-curVertexPtr->Y) - 2*(nextVertexPtr->Z-curVertexPtr->Z) \
+			); \
+ \
+			outputVerticesPtr->Z = curVertexPtr->Z + MUL_FIXED(lambda,nextVertexPtr->Z-curVertexPtr->Z); \
+			outputVerticesPtr->Y = (outputVerticesPtr->Z*2); \
+			outputVerticesPtr->X = curVertexPtr->X + MUL_FIXED(lambda,nextVertexPtr->X-curVertexPtr->X);
+
+
+/*KJL**************
+* GOURAUD POLYGON *
+**************KJL*/
+
+/* Clip against Z plane */
+void GouraudPolygon_ClipWithZ(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Z_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Z_Test(nextVertexPtr);
+	Clip_Z_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+
+/* Clip against negative X plane */
+static void GouraudPolygon_Norm_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NX_Test(nextVertexPtr);
+	Clip_NX_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void GouraudPolygon_Wide_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NX_Test(nextVertexPtr);
+	Clip_Wide_NX_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive Y plane*/
+static void GouraudPolygon_Norm_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PY_Test(nextVertexPtr);
+	Clip_PY_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void GouraudPolygon_Wide_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PY_Test(nextVertexPtr);
+	Clip_Wide_PY_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/* Clip against negative Y plane*/
+static void GouraudPolygon_Norm_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NY_Test(nextVertexPtr);
+	Clip_NY_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void GouraudPolygon_Wide_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NY_Test(nextVertexPtr);
+	Clip_Wide_NY_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive X plane */
+static void GouraudPolygon_Norm_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PX_Test(nextVertexPtr);
+	Clip_PX_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void GouraudPolygon_Wide_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PX_Test(nextVertexPtr);
+	Clip_Wide_PX_OutputXYZ
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/*KJL***************
+* TEXTURED POLYGON *
+***************KJL*/
+
+/* Clip against Z plane */
+void TexturedPolygon_ClipWithZ(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Z_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Z_Test(nextVertexPtr);
+	Clip_Z_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/* Clip against negative X plane */
+static void TexturedPolygon_Norm_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NX_Test(nextVertexPtr);
+	Clip_NX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void TexturedPolygon_Wide_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NX_Test(nextVertexPtr);
+	Clip_Wide_NX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive Y plane*/
+static void TexturedPolygon_Norm_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PY_Test(nextVertexPtr);
+	Clip_PY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void TexturedPolygon_Wide_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PY_Test(nextVertexPtr);
+	Clip_Wide_PY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/* Clip against negative Y plane*/
+static void TexturedPolygon_Norm_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NY_Test(nextVertexPtr);
+	Clip_NY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void TexturedPolygon_Wide_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NY_Test(nextVertexPtr);
+	Clip_Wide_NY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive X plane */
+static void TexturedPolygon_Norm_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PX_Test(nextVertexPtr);
+	Clip_PX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void TexturedPolygon_Wide_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PX_Test(nextVertexPtr);
+	Clip_Wide_PX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+
+
+
+/*KJL************************
+* GOURAUD TEXTURED POLYGONS *
+************************KJL*/
+						 
+/* Clip against Z plane */
+void GouraudTexturedPolygon_ClipWithZ(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Z_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Z_Test(nextVertexPtr);
+	Clip_Z_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/* Clip against negative X plane */
+static void GouraudTexturedPolygon_Norm_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NX_Test(nextVertexPtr);
+	Clip_NX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void GouraudTexturedPolygon_Wide_ClipWithNegativeX(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NX_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NX_Test(nextVertexPtr);
+	Clip_Wide_NX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive Y plane*/
+static void GouraudTexturedPolygon_Norm_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PY_Test(nextVertexPtr);
+	Clip_PY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void GouraudTexturedPolygon_Wide_ClipWithPositiveY(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PY_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PY_Test(nextVertexPtr);
+	Clip_Wide_PY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+/* Clip against negative Y plane*/
+static void GouraudTexturedPolygon_Norm_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_NY_Test(nextVertexPtr);
+	Clip_NY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+static void GouraudTexturedPolygon_Wide_ClipWithNegativeY(void)
+{
+	RENDERVERTEX *curVertexPtr = (RenderPolygon.Vertices);
+	RENDERVERTEX *outputVerticesPtr = VerticesBuffer;
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_NY_Test(curVertexPtr);
+
+	Clip_LoopStart((RenderPolygon.Vertices))
+	Clip_Wide_NY_Test(nextVertexPtr);
+	Clip_Wide_NY_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd(VerticesBuffer)
+}
+
+/* Clip against positive X plane */
+static void GouraudTexturedPolygon_Norm_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_PX_Test(nextVertexPtr);
+	Clip_PX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+static void GouraudTexturedPolygon_Wide_ClipWithPositiveX(void)
+{
+	RENDERVERTEX *curVertexPtr = VerticesBuffer;
+	RENDERVERTEX *outputVerticesPtr = (RenderPolygon.Vertices);
+	int verticesLeft = RenderPolygon.NumberOfVertices;
+	int numberOfPointsOutputted=0;
+	
+	int curVertexInside = Clip_Wide_PX_Test(curVertexPtr);
+
+	Clip_LoopStart(VerticesBuffer)
+	Clip_Wide_PX_Test(nextVertexPtr);
+	Clip_Wide_PX_OutputXYZ
+	Clip_OutputUV
+	Clip_OutputI
+	Clip_LoopEnd((RenderPolygon.Vertices))
+}
+
+
+
+
+
+
+
+int PolygonWithinFrustrum(POLYHEADER *polyPtr)
+{			
+    char inFrustrumFlag=0;
+   	char noClippingFlag=INSIDE_FRUSTRUM;
+	int *vertexNumberPtr = &polyPtr->Poly1stPt;
+	
+	if (polyPtr->PolyFlags & iflag_notvis) return 0;
+	
+	RenderPolygon.NumberOfVertices=0; 
+	while(*vertexNumberPtr != Term)
+	{
+		int vertexNumber = *vertexNumberPtr++;
+
+		inFrustrumFlag |= FrustrumFlagForVertex[vertexNumber];
+		noClippingFlag &= FrustrumFlagForVertex[vertexNumber];
+	
+		/* count the number of points in the polygon; this is used for all the loops that follow */
+	   	RenderPolygon.NumberOfVertices++; 
+	}
+	
+	if (inFrustrumFlag != INSIDE_FRUSTRUM) return 0;
+
+	/* at this point we know that the poly is inside the view frustrum */
+
+	/* if not a sprite, test direction of poly */
+	if (!( (Global_ShapeHeaderPtr->shapeflags&ShapeFlag_Sprite) || (polyPtr->PolyFlags & iflag_no_bfc) ))
+	{
+		VECTORCH pop;
+		VECTORCH *normalPtr = (VECTORCH*)(Global_ShapeNormals + polyPtr->PolyNormalIndex);
+		
+		#if 1
+		if(Global_ODB_Ptr->ObMorphCtrl)
+		{
+			extern MORPHDISPLAY MorphDisplay;
+		   	SHAPEHEADER *shape1Ptr;
+		   	VECTORCH *shape1PointsPtr;
+			VECTORCH *shape2PointsPtr;
+							
+			/* Set up the morph data */
+			GetMorphDisplay(&MorphDisplay, Global_ODB_Ptr);
+
+			shape1Ptr = MorphDisplay.md_sptr1;
+
+			if(MorphDisplay.md_lerp == 0x0000)
+			{
+				shape1PointsPtr = (VECTORCH *)*shape1Ptr->points;
+				pop = shape1PointsPtr[polyPtr->Poly1stPt];	
+					
+			}
+			else if(MorphDisplay.md_lerp == 0xffff)
+			{
+				SHAPEHEADER *shape2Ptr = MorphDisplay.md_sptr2;
+				
+				shape2PointsPtr = (VECTORCH *)*shape2Ptr->points;
+				pop = shape2PointsPtr[polyPtr->Poly1stPt];	
+			}
+			else
+			{
+				SHAPEHEADER *shape2Ptr = MorphDisplay.md_sptr2;
+			    
+				shape1PointsPtr = (VECTORCH *)(*shape1Ptr->points);
+				shape2PointsPtr = (VECTORCH *)(*shape2Ptr->points);
+
+				{
+				   	VECTORCH vertex1 = shape1PointsPtr[polyPtr->Poly1stPt];
+				   	VECTORCH vertex2 = shape2PointsPtr[polyPtr->Poly1stPt];
+				
+					if( (vertex1.vx == vertex2.vx && vertex1.vy == vertex2.vy && vertex1.vz == vertex2.vz) )
+					{
+						pop = vertex1;
+					}
+					else
+					{
+						/* KJL 15:27:20 05/22/97 - I've changed this to speed things up, If a vertex
+						component has a magnitude greater than 32768 things will go wrong. */
+						pop.vx = vertex1.vx + (((vertex2.vx-vertex1.vx)*MorphDisplay.md_lerp)>>16);
+						pop.vy = vertex1.vy + (((vertex2.vy-vertex1.vy)*MorphDisplay.md_lerp)>>16);
+						pop.vz = vertex1.vz + (((vertex2.vz-vertex1.vz)*MorphDisplay.md_lerp)>>16);
+					}
+				}
+			}
+ 		}
+		else
+		#endif
+		{
+			/* Get the 1st polygon point as the POP */
+			VECTORCH *pointsArray = (VECTORCH*)(Global_ShapePoints);
+			pop = pointsArray[polyPtr->Poly1stPt];
+		}
+		pop.vx -= LocalView.vx;
+		pop.vy -= LocalView.vy;
+		pop.vz -= LocalView.vz;
+	
+		if (Dot(&pop, normalPtr)>0) return 0;
+	}
+
+	if (noClippingFlag == INSIDE_FRUSTRUM) return 2;
+
+	/* yes, we need to draw poly */
+	return 1;
+}	
+
+int PolygonShouldBeDrawn(POLYHEADER *polyPtr)
+{
+
+	/* at this point we know that the poly is inside the view frustrum */
+	if (polyPtr->PolyFlags & iflag_notvis) return 0;
+
+	#if 1	
+	/* if not a sprite, test direction of poly */
+	if (!( (Global_ShapeHeaderPtr->shapeflags&ShapeFlag_Sprite) || (polyPtr->PolyFlags & iflag_no_bfc) ))
+	{
+		/* KJL 16:49:14 7/10/97 -  
+		
+		***** MORPHED NORMALS SUPPORT NOT YET ADDED *****
+		
+		*/
+		VECTORCH pop;
+		VECTORCH *normalPtr = (VECTORCH*)(Global_ShapeNormals + polyPtr->PolyNormalIndex);
+		VECTORCH *pointsArray = (VECTORCH*)(Global_ShapePoints);
+		/* Get the 1st polygon point as the POP */
+
+		pop.vx = pointsArray[polyPtr->Poly1stPt].vx - LocalView.vx;
+		pop.vy = pointsArray[polyPtr->Poly1stPt].vy - LocalView.vy;
+		pop.vz = pointsArray[polyPtr->Poly1stPt].vz - LocalView.vz;
+	
+		if (Dot(&pop, normalPtr)>0) return 0;
+	}
+	#endif
+	#if 0
+	{
+		int *vertexNumberPtr = &polyPtr->Poly1stPt;
+		RenderPolygon.NumberOfVertices=0; 
+		while(*vertexNumberPtr++ != Term)
+		{
+			/* count the number of points in the polygon; this is used for all the loops that follow */
+		   	RenderPolygon.NumberOfVertices++; 
+		}
+	}
+	#elif 0
+	RenderPolygon.NumberOfVertices = 3;
+	#else
+	{
+		int *vertexNumberPtr = &polyPtr->Poly1stPt;
+		if (vertexNumberPtr[3] == Term)
+		{
+			RenderPolygon.NumberOfVertices = 3;
+		}
+		else
+		{
+			RenderPolygon.NumberOfVertices = 4;
+		}
+	}
+	#endif
+
+	return 2;
+}	
+
+/* KJL 16:18:59 7/7/97 - simple vertex test to be used in first
+pass of subdividing code */
+static int VertexWithin_Norm_Frustrum(RENDERVERTEX *vertexPtr)
+{
+	int vertexFlag = 0;
+
+	if(Clip_Z_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_Z_PLANE;
+	if(Clip_PX_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_PX_PLANE;	
+	if(Clip_NX_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_NX_PLANE;	
+	if(Clip_PY_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_PY_PLANE;	
+	if(Clip_NY_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_NY_PLANE;	
+	
+	return vertexFlag;
+}
+
+static int VertexWithin_Wide_Frustrum(RENDERVERTEX *vertexPtr)
+{
+	int vertexFlag = 0;
+
+	if(Clip_Z_Test(vertexPtr))			vertexFlag |= INSIDE_FRUSTRUM_Z_PLANE;
+	if(Clip_Wide_PX_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_PX_PLANE;	
+	if(Clip_Wide_NX_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_NX_PLANE;	
+	if(Clip_Wide_PY_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_PY_PLANE;	
+	if(Clip_Wide_NY_Test(vertexPtr))	vertexFlag |= INSIDE_FRUSTRUM_NY_PLANE;	
+	
+	return vertexFlag;
+}
+
+
+/* KJL 15:32:52 7/17/97 - Test to see if an object is in the view frustrum */
+static int ObjectWithin_Norm_Frustrum(DISPLAYBLOCK *dbPtr)
+{
+ //	LOCALASSERT(dbPtr->ObShapeData->shaperadius);
+
+#if FAR_Z_CLIP
+	if(dbPtr->ObView.vz-dbPtr->ObShapeData->shaperadius<=FAR_Z_CLIP_RANGE)
+#endif
+	if (dbPtr->ObView.vz+dbPtr->ObShapeData->shaperadius>=ZCLIPPINGVALUE)
+	{
+		/* scale radius by square root of 2 */
+		int radius = MUL_FIXED(92682,dbPtr->ObShapeData->shaperadius);
+
+		if ((dbPtr->ObView.vx-dbPtr->ObView.vz)<=radius)
+			if ((-dbPtr->ObView.vx-dbPtr->ObView.vz)<=radius)
+				if ((dbPtr->ObView.vy-dbPtr->ObView.vz)<=radius)
+					if ((-dbPtr->ObView.vy-dbPtr->ObView.vz)<=radius)
+						return 1;
+	}
+	return 0;
+}
+static int ObjectCompletelyWithin_Norm_Frustrum(DISPLAYBLOCK *dbPtr)
+{
+ //	LOCALASSERT(dbPtr->ObShapeData->shaperadius);
+	if (dbPtr->ObView.vz-dbPtr->ObShapeData->shaperadius>=ZCLIPPINGVALUE)
+	{
+		/* scale radius by square root of 2 */
+		int radius = MUL_FIXED(92682,dbPtr->ObShapeData->shaperadius);
+
+		if ((dbPtr->ObView.vz-dbPtr->ObView.vx)>=radius)
+			if ((dbPtr->ObView.vz+dbPtr->ObView.vx)>=radius)
+				if ((dbPtr->ObView.vz-dbPtr->ObView.vy)>=radius)
+					if ((dbPtr->ObView.vz+dbPtr->ObView.vy)>=radius)
+						return 1;
+	}
+	return 0;
+}
+static int ObjectCompletelyWithin_Wide_Frustrum(DISPLAYBLOCK *dbPtr)
+{
+	return 0;
+}
+
+static int ObjectWithin_Wide_Frustrum(DISPLAYBLOCK *dbPtr)
+{
+	if (dbPtr->ObView.vz+dbPtr->ObShapeData->shaperadius>=ZCLIPPINGVALUE)
+	{
+		/* scale radius by square root of 5 */
+		int radius = MUL_FIXED(146543,dbPtr->ObShapeData->shaperadius);
+
+		if ((dbPtr->ObView.vx-2*dbPtr->ObView.vz)<=radius)
+			if ((-dbPtr->ObView.vx-2*dbPtr->ObView.vz)<=radius)
+				if ((dbPtr->ObView.vy-2*dbPtr->ObView.vz)<=radius)
+					if ((-dbPtr->ObView.vy-2*dbPtr->ObView.vz)<=radius)
+						return 1;
+	}
+	return 0;
+}
+
+
+char FrustrumFlagForVertex[maxrotpts];
+
+void TestVerticesWith_Norm_Frustrum(void)
+{
+	int v = Global_ShapeHeaderPtr->numpoints;
+
+	GLOBALASSERT(v>0);
+
+	while(v--)
+	{
+		char vertexFlag = 0;
+		
+#if FAR_Z_CLIP
+		if(ZCLIPPINGVALUE <= RotatedPts[v].vz && RotatedPts[v].vz<=FAR_Z_CLIP_RANGE)
+#else
+		if(ZCLIPPINGVALUE <= RotatedPts[v].vz)
+#endif
+			vertexFlag |= INSIDE_FRUSTRUM_Z_PLANE;
+		
+		if(-RotatedPts[v].vx <= RotatedPts[v].vz)
+			vertexFlag |= INSIDE_FRUSTRUM_PX_PLANE;	
+		
+		if(RotatedPts[v].vx <= RotatedPts[v].vz)
+			vertexFlag |= INSIDE_FRUSTRUM_NX_PLANE;	
+		
+		if(-RotatedPts[v].vy <= RotatedPts[v].vz)
+			vertexFlag |= INSIDE_FRUSTRUM_PY_PLANE;	
+		
+		if(RotatedPts[v].vy <= RotatedPts[v].vz)
+			vertexFlag |= INSIDE_FRUSTRUM_NY_PLANE;	
+		
+		FrustrumFlagForVertex[v] = vertexFlag;
+	}
+}
+void TestVerticesWith_Wide_Frustrum(void)
+{
+	int v = Global_ShapeHeaderPtr->numpoints;
+
+	GLOBALASSERT(v>0);
+
+	while(v--)
+	{
+		char vertexFlag = 0;
+		
+		if(ZCLIPPINGVALUE <= RotatedPts[v].vz)
+			vertexFlag |= INSIDE_FRUSTRUM_Z_PLANE;
+		
+		if(-RotatedPts[v].vx <= RotatedPts[v].vz*2)
+			vertexFlag |= INSIDE_FRUSTRUM_PX_PLANE;	
+		
+		if(RotatedPts[v].vx <= RotatedPts[v].vz*2)
+			vertexFlag |= INSIDE_FRUSTRUM_NX_PLANE;	
+		
+		if(-RotatedPts[v].vy <= RotatedPts[v].vz*2)
+			vertexFlag |= INSIDE_FRUSTRUM_PY_PLANE;	
+		
+		if(RotatedPts[v].vy <= RotatedPts[v].vz*2)
+			vertexFlag |= INSIDE_FRUSTRUM_NY_PLANE;	
+		
+		FrustrumFlagForVertex[v] = vertexFlag;
+	}
+}
+
+
+
+int DecalWithinFrustrum(DECAL *decalPtr)
+{
+	char inFrustrumFlag;
+	char noClippingFlag;
+
+	if(ModuleCurrVisArray[decalPtr->ModuleIndex] != 2) return 0;
+
+    inFrustrumFlag=0;
+   	noClippingFlag=INSIDE_FRUSTRUM;
+	
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[0]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[1]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[2]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[3]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	
+	if (inFrustrumFlag != INSIDE_FRUSTRUM) return 0;
+	if (noClippingFlag == INSIDE_FRUSTRUM) return 2;
+
+	/* yes, we need to draw poly */
+	return 1;
+}
+
+int QuadWithinFrustrum(void)
+{
+	char inFrustrumFlag;
+	char noClippingFlag;
+
+    inFrustrumFlag=0;
+   	noClippingFlag=INSIDE_FRUSTRUM;
+	
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[0]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[1]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[2]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[3]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	
+	if (inFrustrumFlag != INSIDE_FRUSTRUM) return 0;
+	if (noClippingFlag == INSIDE_FRUSTRUM) return 2;
+
+	/* yes, we need to draw poly */
+	return 1;
+}
+
+int TriangleWithinFrustrum(void)
+{
+	char inFrustrumFlag;
+	char noClippingFlag;
+
+    inFrustrumFlag=0;
+   	noClippingFlag=INSIDE_FRUSTRUM;
+	
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[0]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[1]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	{
+		int vertexFlag = VertexWithinFrustrum(&VerticesBuffer[2]);
+		inFrustrumFlag |= vertexFlag;
+		noClippingFlag &= vertexFlag;
+	}
+	
+	if (inFrustrumFlag != INSIDE_FRUSTRUM) return 0;
+	if (noClippingFlag == INSIDE_FRUSTRUM) return 2;
+
+	/* yes, we need to draw poly */
+	return 1;
+}
+
+  
\ No newline at end of file