SGI SI GLU library

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diff --git a/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h b/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h
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+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+** 
+** http://oss.sgi.com/projects/FreeB
+** 
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+** 
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+** 
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+**
+** $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
+*/
+/*
+** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
+*/
+
+#ifndef _SAMPLEMONOPOLY_H
+#define _SAMPLEMONOPOLY_H
+
+#include "monoTriangulation.h"
+#include "gridWrap.h"
+#include "rectBlock.h"
+
+
+void  triangulateXYMono(Int n_upper, Real upperVerts[][2],
+		       Int n_lower, Real lowerVerts[][2],
+		       primStream* pStream);
+
+void stripOfFanLeft(vertexArray* leftChain, 
+		     Int largeIndex,
+		     Int smallIndex,
+		     gridWrap* grid,
+		     Int vlineIndex,
+		     Int ulineSmallIndex,
+		     Int ulineLargeIndex,
+		     primStream* pStream,
+		    Int gridLineUp
+		     );
+void sampleLeftOneGridStep(vertexArray* leftChain,
+		  Int beginLeftIndex,
+		  Int endLeftIndex,
+		  gridBoundaryChain* leftGridChain,
+		  Int leftGridChainStartIndex,
+		  primStream* pStream
+		  );
+
+void sampleLeftSingleTrimEdgeRegion(Real upperVert[2], Real lowerVert[2],
+				    gridBoundaryChain* gridChain,
+				    Int beginIndex,
+				    Int endIndex,
+				    primStream* pStream);
+
+void sampleLeftStripRec(vertexArray* leftChain,
+		     Int topLeftIndex,
+		     Int botLeftIndex,
+		     gridBoundaryChain* leftGridChain,
+		     Int leftGridChainStartIndex,
+		     Int leftGridChainEndIndex,
+			primStream* pStream
+		     );
+
+void sampleLeftStrip(vertexArray* leftChain,
+		     Int topLeftIndex,
+		     Int botLeftIndex,
+		     gridBoundaryChain* leftGridChain,
+		     Int leftGridChainStartIndex,
+		     Int leftGridChainEndIndex,
+		     primStream* pStream
+		     );
+
+void findLeftGridIndices(directedLine* topEdge, Int firstGridIndex, Int lastGridIndex, gridWrap* grid,  Int* ret_indices, Int* ret_inner);
+
+void findRightGridIndices(directedLine* topEdge, Int firstGridIndex, Int lastGridIndex, gridWrap* grid,  Int* ret_indices, Int* ret_inner);
+
+void sampleMonoPoly(directedLine* polygon, gridWrap* grid, Int ulinear, Int vlinear, primStream *pStream, rectBlockArray* rbArray);
+
+void sampleMonoPolyRec(
+		       Real* topVertex,
+		       Real* botVertex,
+		       vertexArray* leftChain, 
+		       Int leftStartIndex,
+		       vertexArray* rightChain,
+		       Int rightStartIndex,
+		       gridBoundaryChain* leftGridChain, 
+		       gridBoundaryChain* rightGridChain, 
+		       Int gridStartIndex,
+		       primStream* pStream,
+		       rectBlockArray* rbArray
+		       );
+
+void sampleLeftStripRecF(vertexArray* leftChain,
+		     Int topLeftIndex,
+		     Int botLeftIndex,
+		     gridBoundaryChain* leftGridChain,
+		     Int leftGridChainStartIndex,
+		     Int leftGridChainEndIndex,
+			primStream* pStream
+		     );
+
+void findUpCorners(Real *topVertex, 
+		   vertexArray *leftChain, 
+		   Int leftChainStartIndex, Int leftChainEndIndex,
+		   vertexArray *rightChain, 
+		   Int rightChainStartIndex, Int rightChainEndIndex,
+		   Real v,
+		   Real uleft,
+		   Real uright,
+		   Int& ret_leftCornerWhere, 
+		   Int& ret_leftCornerIndex,
+		   Int& ret_rightCornerWhere,
+		   Int& ret_rightCornerIndex
+		   );
+void findDownCorners(Real *botVertex, 
+		   vertexArray *leftChain, Int leftChainStartIndex, Int leftChainEndIndex,
+		   vertexArray *rightChain, Int rightChainStartIndex, Int rightChainEndIndex,
+		   Real v,
+		   Real uleft,
+		   Real uright,
+		   Int& ret_leftCornerWhere,
+		   Int& ret_leftCornerIndex,
+		   Int& ret_rightCornerWhere,
+		   Int& ret_rightCornerIndex
+		   );
+void findNeck(vertexArray *leftChain, Int botLeftIndex, 
+	      vertexArray *rightChain, Int botRightIndex, 
+	      Int& leftLastIndex, /*left point of the neck*/
+	      Int& rightLastIndex /*right point of the neck*/
+	      );
+
+Int findNeckF(vertexArray *leftChain, Int botLeftIndex,
+	       vertexArray *rightChain, Int botRightIndex,
+	       gridBoundaryChain* leftGridChain,
+	       gridBoundaryChain* rightGridChain,
+	       Int gridStartIndex,
+	       Int& neckLeft, 
+	       Int& neckRight);
+
+void findTopAndBot(directedLine* polygon, 
+		   directedLine*& topV, 
+		   directedLine*& botV);
+void findGridChains(directedLine* top, directedLine* bot, 
+		    gridWrap* grid,
+		    gridBoundaryChain*& leftGridChain,
+		    gridBoundaryChain*& rightGridChain);
+void toVertexArrays(directedLine* topV, directedLine* botV, vertexArray& leftChain, vertexArray& rightChain);
+
+void drawCorners(
+		 Real* topV, Real* botV,		 
+		 vertexArray* leftChain,
+		 vertexArray* rightChain,
+		 gridBoundaryChain* leftGridChain,
+		 gridBoundaryChain* rightGridChain,
+		 Int gridIndex1,
+		 Int gridIndex2,
+		 Int leftCornerWhere,
+		 Int leftCornerIndex,
+		 Int rightCornerWhere,
+		 Int rightCornerIndex,
+		 Int bot_leftCornerWhere,
+		 Int bot_leftCornerIndex,
+		 Int bot_rightCornerWhere,
+		 Int bot_rightCornerIndex);
+
+Int checkMiddle(vertexArray* chain, Int begin, Int end, 
+		Real vup, Real vbelow);
+
+#endif
+