src/glu/sgi/libnurbs/nurbtess/polyDBG.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 */
  35 /*
  36 */
  37
  38 #ifndef _POLYDBG_H
  39 #define _POLYDBG_H
  40
  41 #include "definitions.h"
  42 #include "directedLine.h"
  43 #include "monoTriangulation.h"
  44
  45 Int DBG_edgesIntersectGen(Real A[2], Real B[2], Real C[2], Real D[2]);
  46 Int DBG_intersectChain(vertexArray* chain, Int start, Int end, Real A[2], Real B[2]);
  47
  48
  49 Int DBG_edgesIntersect(directedLine* l1, directedLine* l2);
  50 Int DBG_polygonSelfIntersect(directedLine* poly);
  51 Int DBG_edgeIntersectPoly(directedLine* edge, directedLine* poly);
  52 Int DBG_polygonsIntersect(directedLine* p1, directedLine* p2);
  53 Int DBG_polygonListIntersect(directedLine* pList);
  54
  55 Int DBG_isCounterclockwise(directedLine* poly);
  56 Int DBG_rayIntersectEdge(Real v0[2], Real dx, Real dy, Real v10[2], Real v1[2], Real v2[2]);
  57 Int DBG_pointInsidePoly(Real v[2], directedLine* poly);
  58 Int DBG_enclosingPolygons(directedLine* poly, directedLine* list);
  59 void  DBG_reverse(directedLine* poly);
  60 Int DBG_check(directedLine *polyList);
  61
  62 Int DBG_isConvex(directedLine *poly);
  63 Int DBG_is_U_direction(directedLine *poly);
  64 Int DBG_is_U_monotone(directedLine* poly);
  65
  66 directedLine* DBG_cutIntersectionAllPoly(directedLine* list);
  67 directedLine* DBG_cutIntersectionPoly(directedLine *polygon, int& cutOccur);
  68
  69 sampledLine*  DBG_collectSampledLinesAllPoly(directedLine *polygonList);
  70
  71 void  DBG_collectSampledLinesPoly(directedLine *polygon, sampledLine*& retHead, sampledLine*& retTail);
  72
  73 #endif