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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
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