1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30/*
31*/
32
33#ifndef _POLYDBG_H
34#define _POLYDBG_H
35
36#include "definitions.h"
37#include "directedLine.h"
38#include "monoTriangulation.h"
39
40Int DBG_edgesIntersectGen(Real A[2], Real B[2], Real C[2], Real D[2]);
41Int DBG_intersectChain(vertexArray* chain, Int start, Int end, Real A[2], Real B[2]);
42
43
44Int DBG_edgesIntersect(directedLine* l1, directedLine* l2);
45Int DBG_polygonSelfIntersect(directedLine* poly);
46Int DBG_edgeIntersectPoly(directedLine* edge, directedLine* poly);
47Int DBG_polygonsIntersect(directedLine* p1, directedLine* p2);
48Int DBG_polygonListIntersect(directedLine* pList);
49
50Int DBG_isCounterclockwise(directedLine* poly);
51Int DBG_rayIntersectEdge(Real v0[2], Real dx, Real dy, Real v10[2], Real v1[2], Real v2[2]);
52Int DBG_pointInsidePoly(Real v[2], directedLine* poly);
53Int DBG_enclosingPolygons(directedLine* poly, directedLine* list);
54void  DBG_reverse(directedLine* poly);
55Int DBG_check(directedLine *polyList);
56
57Int DBG_isConvex(directedLine *poly);
58Int DBG_is_U_direction(directedLine *poly);
59Int DBG_is_U_monotone(directedLine* poly);
60
61directedLine* DBG_cutIntersectionAllPoly(directedLine* list);
62directedLine* DBG_cutIntersectionPoly(directedLine *polygon, int& cutOccur);
63
64sampledLine*  DBG_collectSampledLinesAllPoly(directedLine *polygonList);
65
66void  DBG_collectSampledLinesPoly(directedLine *polygon, sampledLine*& retHead, sampledLine*& retTail);
67
68#endif
69