diff options
author | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
---|---|---|
committer | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
commit | f4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch) | |
tree | 2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h | |
parent | a840692edc9c6d19cd7c057f68e39c7d95eb767d (diff) | |
download | nx-libs-045ad1ef854b60942711d14c3d17d9fadc21dad4.tar.gz nx-libs-045ad1ef854b60942711d14c3d17d9fadc21dad4.tar.bz2 nx-libs-045ad1ef854b60942711d14c3d17d9fadc21dad4.zip |
Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:
Imported nx-X11-3.1.0-1.tar.gz
into Git repository
Diffstat (limited to 'nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h')
-rw-r--r-- | nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h new file mode 100644 index 000000000..4e58e44d2 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h @@ -0,0 +1,110 @@ +/* +** 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: 2004/03/14 08:29:11 $ $Revision: 1.1.1.4 $ +*/ +/* +** $Header: /cvs/xorg/xc/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/monoChain.h,v 1.1.1.4 2004/03/14 08:29:11 eich Exp $ +*/ + +#ifndef _MONO_CHAIN_H +#define _MONO_CHAIN_H + +#include "directedLine.h" +#include "partitionY.h" + +class monoChain; + +class monoChain{ + directedLine* chainHead; + directedLine* chainTail; + monoChain* next; + monoChain* prev; + monoChain* nextPolygon; //a list of polygons + + //cached informatin + //bounding box + Real minX, maxX, minY, maxY; + Int isIncrease; + + //for efficiently comparing two chains + + directedLine* current; + +public: + monoChain(directedLine* cHead, directedLine* cTail); + ~monoChain() {} + + inline void setNext(monoChain* n) {next = n;} + inline void setPrev(monoChain* p) {prev = p;} + inline void setNextPolygon(monoChain* np) {nextPolygon = np;} + inline monoChain* getNext() {return next;} + inline monoChain* getPrev() {return prev;} + inline directedLine* getHead() {return chainHead;} + inline directedLine* getTail() {return chainTail;} + + inline void resetCurrent() { current = ((isIncrease==1)? chainHead:chainTail);} + + void deleteLoop(); + void deleteLoopList(); + + //insert a new chain between prev and this + void insert(monoChain* nc); + + Int numChainsSingleLoop(); + Int numChainsAllLoops(); + monoChain** toArrayAllLoops(Int& num_chains); + Int toArraySingleLoop(monoChain** array, Int index); + + Int isKey; + Real keyY; //the current horizotal line + Real chainIntersectHoriz(Real y); //updates current incrementally for efficiency + directedLine* find(Real y);//find dline so that y intersects dline. + + void printOneChain(); + void printChainLoop(); + void printAllLoops(); + +}; + +monoChain* directedLineLoopToMonoChainLoop(directedLine* loop); +monoChain* directedLineLoopListToMonoChainLoopList(directedLine* list); +Int MC_sweepY(Int nVertices, monoChain** sortedVertices, sweepRange** ret_ranges); + +void MC_findDiagonals(Int total_num_edges, monoChain** sortedVertices, + sweepRange** ranges, Int& num_diagonals, + directedLine** diagonal_vertices); + +directedLine* MC_partitionY(directedLine *polygons, sampledLine **retSampledLines); + +#endif |