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/*
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice including the dates of first publication and
* either this permission notice or a reference to
* http://oss.sgi.com/projects/FreeB/
* shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Silicon Graphics, Inc.
* shall not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization from
* Silicon Graphics, Inc.
*/
/*
** $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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