BOP_Face.cpp

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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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_Face.h"

/******************************************************************************/
/*** BOP_Face                                                               ***/
/******************************************************************************/

BOP_Face::BOP_Face(MT_Plane3 plane, BOP_Index originalFace)
{
    m_plane        = plane;
    m_tag          = UNCLASSIFIED;
    m_originalFace = originalFace;
    m_split        = 0;
    m_bbox         = NULL;
}

void BOP_Face::invert()
{
    getPlane().Invert();
    BOP_Index aux = m_indexs[0];
    m_indexs[0] = m_indexs[2];
    m_indexs[2] = aux;
}

/******************************************************************************/
/*** BOP_Face                                                              ***/
/******************************************************************************/

BOP_Face3::BOP_Face3(BOP_Index v1, BOP_Index v2, BOP_Index v3, MT_Plane3 plane, BOP_Index originalFace): BOP_Face(plane,originalFace) 
{
    m_indexs[0] = v1;
    m_indexs[1] = v2;
    m_indexs[2] = v3;   
    m_size = 3;
}

bool BOP_Face3::getEdgeIndex(BOP_Index v1, BOP_Index v2, unsigned int &e)
{
    if (m_indexs[0] == v1) {
        if (m_indexs[1] == v2) {
            e = 1;
        }
        else if (m_indexs[2] == v2) {
            e = 3;
        }
        else
          return false;
    }
    else if (m_indexs[1] == v1) {
        if (m_indexs[0] == v2) {
            e = 1;
        }
        else if (m_indexs[2] == v2) {
            e = 2;
        }
        else
          return false;
    }
    else if (m_indexs[2] == v1) {
        if (m_indexs[0] == v2) {
            e = 3;
        }
        else if (m_indexs[1] == v2) {
            e = 2;
        }
        else
          return false;
    }else {
      return false;
    }
    
    return  true;
} 

bool BOP_Face3::containsVertex(BOP_Index v) 
{
    return (m_indexs[0] == v || m_indexs[1] == v || m_indexs[2] == v);
}

bool BOP_Face3::getNeighbours(BOP_Index v, BOP_Index &prev, BOP_Index &next) 
{
    if (m_indexs[0] == v) {
      prev = m_indexs[2];
      next = m_indexs[1];
    }
    else if (m_indexs[1] == v) {
      prev = m_indexs[0];
      next = m_indexs[2];
    }
        else if (m_indexs[2] == v) {
      prev = m_indexs[1];
      next = m_indexs[0];
    }
    else return false;
    
    return true;
}

bool BOP_Face3::getPreviousVertex(BOP_Index v, BOP_Index &w) 
{
    if (m_indexs[0] == v) w = m_indexs[2];
    else if (m_indexs[1] == v) w = m_indexs[0];
    else if (m_indexs[2] == v) w = m_indexs[1];
    else return false;
    
    return true;
}

bool BOP_Face3::getNextVertex(BOP_Index v, BOP_Index &w) 
{
    if (m_indexs[0] == v) w = m_indexs[1];
    else if (m_indexs[1] == v) w = m_indexs[2];
    else if (m_indexs[2] == v) w = m_indexs[0];
    else return false;
    
    return true;
} 

void BOP_Face3::replaceVertexIndex(BOP_Index oldIndex, BOP_Index newIndex)
{
    /* if the old index really exists, and new index also exists already,
     * don't create an edge with both vertices == newIndex */

    if( (m_indexs[0] == oldIndex || m_indexs[1] == oldIndex || m_indexs[2] == oldIndex) &&
            (m_indexs[0] == newIndex || m_indexs[1] == newIndex || m_indexs[2] == newIndex) ) {
        setTAG(BROKEN);
    }

    if (m_indexs[0] == oldIndex) m_indexs[0] = newIndex;
    else if (m_indexs[1] == oldIndex) m_indexs[1] = newIndex;
    else if (m_indexs[2] == oldIndex) m_indexs[2] = newIndex;
}

/******************************************************************************/
/*** BOP_Face4                                                              ***/
/******************************************************************************/

BOP_Face4::BOP_Face4(BOP_Index v1, BOP_Index v2, BOP_Index v3, BOP_Index v4, MT_Plane3 plane, 
                     BOP_Index originalFace): 
                     BOP_Face(plane,originalFace) 
{
    m_indexs[0] = v1;
    m_indexs[1] = v2;
    m_indexs[2] = v3;
    m_indexs[3] = v4;
    
    m_size = 4;
}

bool BOP_Face4::containsVertex(BOP_Index v) 
{
    return (m_indexs[0] == v || m_indexs[1] == v || m_indexs[2] == v || m_indexs[3]==v);
}

bool BOP_Face4::getNeighbours(BOP_Index v, BOP_Index &prev, BOP_Index &next, BOP_Index &opp) 
{
    if (m_indexs[0] == v) {
      prev = m_indexs[3];
      next = m_indexs[1];
      opp = m_indexs[2];
    }
    else if (m_indexs[1] == v) {
      prev = m_indexs[0];
      next = m_indexs[2];
      opp = m_indexs[3];
    }
    else if (m_indexs[2] == v) {
      prev = m_indexs[1];
      next = m_indexs[3];
      opp = m_indexs[0];
    }
    else if (m_indexs[3] == v) {
      prev = m_indexs[2];
      next = m_indexs[0];
      opp = m_indexs[1];
    }
    else return false;

    return true;
}

bool BOP_Face4::getPreviousVertex(BOP_Index v, BOP_Index &w) 
{
    if (m_indexs[0] == v) w = m_indexs[3];
    else if (m_indexs[1] == v) w = m_indexs[0];
    else if (m_indexs[2] == v) w = m_indexs[1];
    else if (m_indexs[3] == v) w = m_indexs[2];
    else return false;

    return true;
}

bool BOP_Face4::getNextVertex(BOP_Index v, BOP_Index &w) 
{
    if (m_indexs[0] == v) w = m_indexs[1];
    else if (m_indexs[1] == v) w = m_indexs[2];
    else if (m_indexs[2] == v) w = m_indexs[3];
    else if (m_indexs[3] == v) w = m_indexs[0];
    else return false;

    return true;
} 

bool BOP_Face4::getOppositeVertex(BOP_Index v, BOP_Index &w)
{
    if (m_indexs[0] == v) 
        w = m_indexs[2];
    else if (m_indexs[1] == v) 
        w = m_indexs[3];
    else if (m_indexs[2] == v) 
        w = m_indexs[0];
    else if (m_indexs[3] == v) 
        w = m_indexs[1];
    else
      return false;

    return true;
}

void BOP_Face4::replaceVertexIndex(BOP_Index oldIndex, BOP_Index newIndex)
{
    if (m_indexs[0] == oldIndex) m_indexs[0] = newIndex;
    else if (m_indexs[1] == oldIndex) m_indexs[1] = newIndex;
    else if (m_indexs[2] == oldIndex) m_indexs[2] = newIndex;
    else if (m_indexs[3] == oldIndex) m_indexs[3] = newIndex;
}

bool BOP_Face4::getEdgeIndex(BOP_Index v1, BOP_Index v2, unsigned int &e)
{
    if (m_indexs[0] == v1) {
        if (m_indexs[1] == v2) {
            e = 1;
        }
        else if (m_indexs[3] == v2) {
            e = 4;
        }
        else
          return false;
    }
    else if (m_indexs[1] == v1) {
        if (m_indexs[0] == v2) {
            e = 1;
        }
        else if (m_indexs[2] == v2) {
            e = 2;
        }
        else
          return false;
    }
    else if (m_indexs[2] == v1) {
        if (m_indexs[1] == v2) {
            e = 2;
        }
        else if (m_indexs[3] == v2) {
            e = 3;
        }
        else
          return false;
    }
    else if (m_indexs[3] == v1) {
        if (m_indexs[2] == v2) {
            e = 3;
        }
        else if (m_indexs[0] == v2) {
            e = 4;
        }
        else
          return false;
    }
    else return false;
    
    return  true;
}  

#ifdef BOP_DEBUG

ostream &operator<<(ostream &stream, BOP_Face *f)
{
    char aux[20];
    BOP_stringTAG(f->m_tag,aux);
    if (f->size()==3) {
        stream << "Face[" << f->getVertex(0) << "," << f->getVertex(1) << ",";
        stream << f->getVertex(2) << "] ("  <<  aux  <<  ") <-- " << f->m_originalFace;
    }
    else {
        stream << "Face[" << f->getVertex(0) << "," << f->getVertex(1) << ",";
        stream << f->getVertex(2) << "," << f->getVertex(3) << "] ("  <<  aux;
        stream <<  ") <-- " << f->m_originalFace;
    }

    return stream;
}
#endif