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191 lines
6.5 KiB
C
191 lines
6.5 KiB
C
/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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**
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** $Date$ $Revision: 1.1 $
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*/
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/*
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** $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/nurbtess/sampleMonoPoly.h,v 1.1 2004/02/02 16:39:15 navaraf Exp $
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*/
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#ifndef _SAMPLEMONOPOLY_H
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#define _SAMPLEMONOPOLY_H
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#include "monoTriangulation.h"
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#include "gridWrap.h"
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#include "rectBlock.h"
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void triangulateXYMono(Int n_upper, Real upperVerts[][2],
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Int n_lower, Real lowerVerts[][2],
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primStream* pStream);
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void stripOfFanLeft(vertexArray* leftChain,
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Int largeIndex,
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Int smallIndex,
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gridWrap* grid,
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Int vlineIndex,
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Int ulineSmallIndex,
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Int ulineLargeIndex,
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primStream* pStream,
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Int gridLineUp
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);
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void sampleLeftOneGridStep(vertexArray* leftChain,
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Int beginLeftIndex,
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Int endLeftIndex,
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gridBoundaryChain* leftGridChain,
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Int leftGridChainStartIndex,
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primStream* pStream
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);
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void sampleLeftSingleTrimEdgeRegion(Real upperVert[2], Real lowerVert[2],
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gridBoundaryChain* gridChain,
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Int beginIndex,
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Int endIndex,
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primStream* pStream);
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void sampleLeftStripRec(vertexArray* leftChain,
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Int topLeftIndex,
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Int botLeftIndex,
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gridBoundaryChain* leftGridChain,
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Int leftGridChainStartIndex,
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Int leftGridChainEndIndex,
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primStream* pStream
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);
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void sampleLeftStrip(vertexArray* leftChain,
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Int topLeftIndex,
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Int botLeftIndex,
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gridBoundaryChain* leftGridChain,
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Int leftGridChainStartIndex,
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Int leftGridChainEndIndex,
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primStream* pStream
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);
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void findLeftGridIndices(directedLine* topEdge, Int firstGridIndex, Int lastGridIndex, gridWrap* grid, Int* ret_indices, Int* ret_inner);
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void findRightGridIndices(directedLine* topEdge, Int firstGridIndex, Int lastGridIndex, gridWrap* grid, Int* ret_indices, Int* ret_inner);
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void sampleMonoPoly(directedLine* polygon, gridWrap* grid, Int ulinear, Int vlinear, primStream *pStream, rectBlockArray* rbArray);
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void sampleMonoPolyRec(
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Real* topVertex,
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Real* botVertex,
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vertexArray* leftChain,
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Int leftStartIndex,
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vertexArray* rightChain,
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Int rightStartIndex,
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gridBoundaryChain* leftGridChain,
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gridBoundaryChain* rightGridChain,
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Int gridStartIndex,
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primStream* pStream,
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rectBlockArray* rbArray
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);
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void sampleLeftStripRecF(vertexArray* leftChain,
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Int topLeftIndex,
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Int botLeftIndex,
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gridBoundaryChain* leftGridChain,
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Int leftGridChainStartIndex,
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Int leftGridChainEndIndex,
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primStream* pStream
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);
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void findUpCorners(Real *topVertex,
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vertexArray *leftChain,
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Int leftChainStartIndex, Int leftChainEndIndex,
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vertexArray *rightChain,
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Int rightChainStartIndex, Int rightChainEndIndex,
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Real v,
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Real uleft,
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Real uright,
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Int& ret_leftCornerWhere,
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Int& ret_leftCornerIndex,
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Int& ret_rightCornerWhere,
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Int& ret_rightCornerIndex
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);
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void findDownCorners(Real *botVertex,
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vertexArray *leftChain, Int leftChainStartIndex, Int leftChainEndIndex,
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vertexArray *rightChain, Int rightChainStartIndex, Int rightChainEndIndex,
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Real v,
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Real uleft,
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Real uright,
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Int& ret_leftCornerWhere,
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Int& ret_leftCornerIndex,
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Int& ret_rightCornerWhere,
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Int& ret_rightCornerIndex
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);
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void findNeck(vertexArray *leftChain, Int botLeftIndex,
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vertexArray *rightChain, Int botRightIndex,
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Int& leftLastIndex, /*left point of the neck*/
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Int& rightLastIndex /*right point of the neck*/
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);
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Int findNeckF(vertexArray *leftChain, Int botLeftIndex,
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vertexArray *rightChain, Int botRightIndex,
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gridBoundaryChain* leftGridChain,
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gridBoundaryChain* rightGridChain,
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Int gridStartIndex,
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Int& neckLeft,
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Int& neckRight);
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void findTopAndBot(directedLine* polygon,
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directedLine*& topV,
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directedLine*& botV);
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void findGridChains(directedLine* top, directedLine* bot,
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gridWrap* grid,
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gridBoundaryChain*& leftGridChain,
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gridBoundaryChain*& rightGridChain);
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void toVertexArrays(directedLine* topV, directedLine* botV, vertexArray& leftChain, vertexArray& rightChain);
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void drawCorners(
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Real* topV, Real* botV,
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vertexArray* leftChain,
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vertexArray* rightChain,
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gridBoundaryChain* leftGridChain,
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gridBoundaryChain* rightGridChain,
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Int gridIndex1,
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Int gridIndex2,
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Int leftCornerWhere,
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Int leftCornerIndex,
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Int rightCornerWhere,
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Int rightCornerIndex,
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Int bot_leftCornerWhere,
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Int bot_leftCornerIndex,
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Int bot_rightCornerWhere,
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Int bot_rightCornerIndex);
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Int checkMiddle(vertexArray* chain, Int begin, Int end,
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Real vup, Real vbelow);
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#endif
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