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/**
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "BOP_Splitter.h"
#include "BOP_Tag.h"
#include <iostream>
using namespace std;
/**
* Returns the split point resulting from intersect a plane and a mesh face
* according to its specified relative edge.
* @param plane split plane
* @param m mesh
* @param f face
* @param e relative edge index
* @return intersection point
*/
MT_Point3 BOP_splitEdge(MT_Plane3 plane, BOP_Mesh *m, BOP_Face *f, unsigned int e)
{
int v1 = -1, v2 = -1;
switch(e) {
case 1:
v1 = f->getVertex(0);
v2 = f->getVertex(1);
break;
case 2:
v1 = f->getVertex(1);
v2 = f->getVertex(2);
break;
case 3:
v1 = f->getVertex(2);
v2 = f->getVertex(0);
break;
default:
// wrong relative edge index!
break;
}
MT_Point3 p1 = m->getVertex(v1)->getPoint();
MT_Point3 p2 = m->getVertex(v2)->getPoint();
return BOP_intersectPlane(plane,p1,p2);
}
/**
* Returns the segment resulting from intersect a plane and a mesh face.
* @param plane split plane
* @param m mesh
* @param f face
* @return segment if there is intersection, NULL otherwise
*/
BOP_Segment BOP_splitFace(MT_Plane3 plane, BOP_Mesh *m, BOP_Face *f)
{
BOP_Vertex *v1 = m->getVertex(f->getVertex(0));
BOP_Vertex *v2 = m->getVertex(f->getVertex(1));
BOP_Vertex *v3 = m->getVertex(f->getVertex(2));
// Classify face vertices
BOP_TAG tag1 = BOP_createTAG(BOP_classify(v1->getPoint(),plane));
BOP_TAG tag2 = BOP_createTAG(BOP_classify(v2->getPoint(),plane));
BOP_TAG tag3 = BOP_createTAG(BOP_classify(v3->getPoint(),plane));
// Classify face according to its vertices classification
BOP_TAG tag = BOP_createTAG(tag1,tag2,tag3);
BOP_Segment s;
switch(tag) {
case IN_IN_IN :
case OUT_OUT_OUT :
case ON_ON_ON :
s.m_cfg1 = s.m_cfg2 = BOP_Segment::createUndefinedCfg();
break;
case ON_OUT_OUT :
case ON_IN_IN :
s.m_v1 = f->getVertex(0);
s.m_cfg1 = BOP_Segment::createVertexCfg(1);
s.m_cfg2 = BOP_Segment::createUndefinedCfg();
break;
case OUT_ON_OUT :
case IN_ON_IN :
s.m_v1 = f->getVertex(1);
s.m_cfg1 = BOP_Segment::createVertexCfg(2);
s.m_cfg2 = BOP_Segment::createUndefinedCfg();
break;
case OUT_OUT_ON :
case IN_IN_ON :
s.m_v1 = f->getVertex(2);
s.m_cfg1 = BOP_Segment::createVertexCfg(3);
s.m_cfg2 = BOP_Segment::createUndefinedCfg();
break;
case ON_ON_IN :
case ON_ON_OUT :
s.m_v1 = f->getVertex(0);
s.m_v2 = f->getVertex(1);
s.m_cfg1 = BOP_Segment::createVertexCfg(1);
s.m_cfg2 = BOP_Segment::createVertexCfg(2);
break;
case ON_OUT_ON :
case ON_IN_ON :
s.m_v1 = f->getVertex(0);
s.m_v2 = f->getVertex(2);
s.m_cfg1 = BOP_Segment::createVertexCfg(1);
s.m_cfg2 = BOP_Segment::createVertexCfg(3);
break;
case OUT_ON_ON :
case IN_ON_ON :
s.m_v1 = f->getVertex(1);
s.m_v2 = f->getVertex(2);
s.m_cfg1 = BOP_Segment::createVertexCfg(2);
s.m_cfg2 = BOP_Segment::createVertexCfg(3);
break;
case IN_OUT_ON :
case OUT_IN_ON :
s.m_v2 = f->getVertex(2);
s.m_cfg1 = BOP_Segment::createEdgeCfg(1);
s.m_cfg2 = BOP_Segment::createVertexCfg(3);
break;
case IN_ON_OUT :
case OUT_ON_IN :
s.m_v1 = f->getVertex(1);
s.m_cfg1 = BOP_Segment::createVertexCfg(2);
s.m_cfg2 = BOP_Segment::createEdgeCfg(3);
break;
case ON_IN_OUT :
case ON_OUT_IN :
s.m_v1 = f->getVertex(0);
s.m_cfg1 = BOP_Segment::createVertexCfg(1);
s.m_cfg2 = BOP_Segment::createEdgeCfg(2);
break;
case OUT_IN_IN :
case IN_OUT_OUT :
s.m_cfg1 = BOP_Segment::createEdgeCfg(1);
s.m_cfg2 = BOP_Segment::createEdgeCfg(3);
break;
case OUT_IN_OUT :
case IN_OUT_IN :
s.m_cfg1 = BOP_Segment::createEdgeCfg(1);
s.m_cfg2 = BOP_Segment::createEdgeCfg(2);
break;
case OUT_OUT_IN :
case IN_IN_OUT :
s.m_cfg1 = BOP_Segment::createEdgeCfg(2);
s.m_cfg2 = BOP_Segment::createEdgeCfg(3);
break;
default:
// wrong TAG!
break;
}
return s;
}
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