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Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h')
| -rw-r--r-- | mesalib/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h b/mesalib/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h new file mode 100644 index 000000000..3a5fa6c91 --- /dev/null +++ b/mesalib/src/glu/sgi/libnurbs/nurbtess/sampleMonoPoly.h @@ -0,0 +1,184 @@ +/* + * 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. + */ +/* +*/ + +#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 + |