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/**
* ***** BEGIN GPL/BL DUAL 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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/BL DUAL LICENSE BLOCK *****
*/
#include "BOP_Segment.h"
#define UNDEFINED 0
/**
* Constructs a new segment.
*/
BOP_Segment::BOP_Segment(){
m_cfg1 = UNDEFINED;
m_cfg2 = UNDEFINED;
}
/**
* Returns the relative edge index between two relative vertex indices.
* @param v1 relative vertex index
* @param v2 relative vertex index
* @return relative edge index between two relative vertex indices, -1 otherwise
*/
int BOP_Segment::getEdgeBetween(unsigned int v1, unsigned int v2)
{
if ((v1 == 1 && v2 == 2) || (v1 == 2 && v2 == 1)) return 1;
if ((v1 == 3 && v2 == 2) || (v1 == 2 && v2 == 3)) return 2;
if ((v1 == 1 && v2 == 3) || (v1 == 3 && v2 == 1)) return 3;
return -1;
}
/**
* Returns if a relative vertex index is on a relative edge index.
* @param v relative vertex index
* @param e relative edge index
* @return true if the relative vertex index is on the relative edge index,
* false otherwise.
*/
bool BOP_Segment::isOnEdge(unsigned int v, unsigned int e)
{
if (v == 1 && (e == 1 || e == 3)) return true;
if (v == 2 && (e == 1 || e == 2)) return true;
if (v == 3 && (e == 2 || e == 3)) return true;
return false;
}
/**
* Inverts the segment, swapping ends data.
*/
void BOP_Segment::invert()
{
BOP_Index aux = m_v1;
m_v1 = m_v2;
m_v2 = aux;
aux = m_cfg1;
m_cfg1 = m_cfg2;
m_cfg2 = aux;
}
/**
* Sorts the segment according to ends configuration.
* The criterion to sort is ...
*
* UNDEFINED < VERTEX < EDGE < IN
* cfg1 > cfg2
*
* so ...
*
* VERTEX(cfg1) => UNDEFINED(cfg2) || VERTEX(cfg2)
* EDGE(cfg1) => UNDEFINED(cfg2) || VERTEX(cfg2) || EDGE(cfg2)
* IN(cfg1) => UNDEFINED(cfg2) || VERTEX(cfg2) || EDGE(cfg2) || IN(cfg2)
*/
void BOP_Segment::sort()
{
if (m_cfg1 < m_cfg2) invert();
}
/**
* Returns if the specified end segment configuration is IN.
* @return true if the specified end segment configuration is IN, false otherwise
*/
bool BOP_Segment::isIn(unsigned int cfg)
{
return (cfg == 20);
}
/**
* Returns if the specified end segment configuration is EDGE.
* @return true if the specified end segment configuration is EDGE, false otherwise
*/
bool BOP_Segment::isEdge(unsigned int cfg)
{
return (cfg > 10) && (cfg < 20);
}
/**
* Returns if the specified end segment configuration is VERTEX.
* @return true if the specified end segment configuration is VERTEX, false otherwise
*/
bool BOP_Segment::isVertex(unsigned int cfg)
{
return (cfg!=UNDEFINED) && (cfg < 10);
}
/**
* Returns if the specified end segment configuration is DEFINED (not UNDEFINED).
* @return true if the specified end segment configuration is DEFINED, false otherwise
*/
bool BOP_Segment::isDefined(unsigned int cfg)
{
return (cfg != UNDEFINED);
}
/**
* Returns if the specified end segment configuration is UNDEFINED.
* @return true if the specified end segment configuration is UNDEFINED, false otherwise
*/
bool BOP_Segment::isUndefined(unsigned int cfg)
{
return (cfg == UNDEFINED);
}
/**
* Returns the relative edge index from the specified end segment configuration.
* @return relative edge index from the specified end segment configuration
*/
unsigned int BOP_Segment::getEdge(unsigned int cfg)
{
return cfg-10;
}
/**
* Returns the relative vertex index from the specified end segment configuration.
* @return relative vertex index from the specified end segment configuration
*/
BOP_Index BOP_Segment::getVertex(unsigned int cfg)
{
return cfg;
}
/**
* Returns the end segment configuration for the specified relative edge index.
* @return end segment configuration for the specified relative edge index
*/
unsigned int BOP_Segment::createEdgeCfg(unsigned int edge)
{
return 10+edge;
}
/**
* Returns the end segment configuration for the specified relative vertex index.
* @return end segment configuration for the specified relative vertex index
*/
unsigned int BOP_Segment::createVertexCfg(BOP_Index vertex)
{
return vertex;
}
/**
* Returns the end segment IN configuration.
* @return end segment IN configuration
*/
unsigned int BOP_Segment::createInCfg()
{
return 20;
}
/**
* Returns the end segment UNDEFINED configuration.
* @return end segment UNDEFINED configuration
*/
unsigned int BOP_Segment::createUndefinedCfg()
{
return UNDEFINED;
}
/**
* Returns the inner segment configuration.
* @return inner segment configuration
*/
unsigned int BOP_Segment::getConfig()
{
if (isUndefined(m_cfg1)) return m_cfg2;
else if (isUndefined(m_cfg2)) return m_cfg1;
else if (isVertex(m_cfg1)) {
// v1 is vertex
if (isVertex(m_cfg2)) {
// v2 is vertex
return createEdgeCfg(getEdgeBetween(getVertex(m_cfg1),getVertex(m_cfg2)));
}
else if (isEdge(m_cfg2)) {
// v2 is edge
if (isOnEdge(m_cfg1,getEdge(m_cfg2))) return m_cfg2;
else return createInCfg(); //IN
}
else return createInCfg(); //IN
}
else if (isEdge(m_cfg1)) {
// v1 is edge
if (isVertex(m_cfg2)) {
// v2 is vertex
if (isOnEdge(m_cfg2,getEdge(m_cfg1))) return m_cfg1;
else return createInCfg(); //IN
}
else if (isEdge(m_cfg2)) {
// v2 is edge
if (m_cfg1 == m_cfg2) return m_cfg1;
else return createInCfg(); // IN
}
else return createInCfg(); // IN
}
else return createInCfg(); // IN
}
/**
* Implements operator <<
*/
ostream &operator<<(ostream &stream, const BOP_Segment &c)
{
cout << "m_v1: " << c.m_v1 << "(" << c.m_cfg1 << ") m_v2: " << c.m_v2 << "(" << c.m_cfg2 << ")";
return stream;
}
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