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/*************************************************************************
*
* $RCSfile: volume3d.cxx,v $
*
* $Revision: 1.1.1.1 $
*
* last change: $Author: hr $ $Date: 2000-09-18 17:01:15 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef _VOLUME3D_HXX
#include "volume3d.hxx"
#endif
#ifndef _POLY3D_HXX
#include "poly3d.hxx"
#endif
#ifndef _SVX_MATRIX3D_HXX
#include "matrix3d.hxx"
#endif
#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif
/*************************************************************************
|*
|* Konstruktor 1: |
|* rPos: Zentrum oder minimale Koordinate links, unten, hinten |__
|* (abhaengig von bPosIsCenter) /
|*
\************************************************************************/
Volume3D::Volume3D(const Vector3D& rPos, const Vector3D& r3DSize, BOOL bPosIsCenter)
: B3dVolume(rPos, r3DSize, bPosIsCenter)
{
}
/*************************************************************************
|*
|* Konstruktor 2 - leeres Volumen, Werte als ungueltig markieren
|*
\************************************************************************/
Volume3D::Volume3D() : B3dVolume()
{
}
/*************************************************************************
|*
|* Transformation des Volumens berechnen und als neues Volumen
|* zurueckgeben
|*
\************************************************************************/
Volume3D Volume3D::GetTransformVolume(const Matrix4D& rTfMatrix) const
{
Volume3D aTfVol;
if(IsValid())
{
Vector3D aTfVec;
Vol3DPointIterator aIter(*this, &rTfMatrix);
while(aIter.Next(aTfVec))
aTfVol.Union(aTfVec);
}
return aTfVol;
}
/*************************************************************************
|*
|* Drahtgitter-Linien fuer das Volumen berechnen und in rPoly3D ablegen
|*
\************************************************************************/
void Volume3D::CreateWireframe(Polygon3D& rPoly3D, const Matrix4D* pTf) const
{
if(!IsValid())
return;
Vector3D aDiff = aMaxVec - aMinVec;
Polygon3D aVolPnts(8);
UINT16 nZeroCnt(0);
UINT16 nIdx = rPoly3D.GetPointCount();
// Alle Punkte holen
Vol3DPointIterator aIter(*this, pTf);
Vector3D aTfVec;
UINT16 i(0);
while(aIter.Next(aTfVec))
aVolPnts[i++] = aTfVec;
// 0-Ausmasse des BoundVolumes zaehlen
for(i = 0; i < 3; i++)
if(aDiff[i] == 0)
nZeroCnt++;
// Die drei Ecksegemente des Volumens mit je drei Linien ausgeben;
// falls Koordinatenanteile 0 sind, nicht alle Segmente verwenden,
// um das gegenseitige Ausloeschen bei XOR-Ausgabe zu verhindern
// 4
// | Dieses Segment immer
// |
// 0---1
// /
// 3
// Die Liniensegmente eines Segments werden immer in der Reihenfolge
// X-, Y- und dann Z-Richtung ausgegeben (gilt natuerlich nur fuer
// untransformierte Koordinaten)
rPoly3D[nIdx++] = aVolPnts[0];
if(nZeroCnt < 3)
{
// wenn keine Ausdehnung, dann nur den ersten Punkt einfuegen
rPoly3D[nIdx++] = aVolPnts[1];
rPoly3D[nIdx++] = aVolPnts[0];
rPoly3D[nIdx++] = aVolPnts[4];
rPoly3D[nIdx++] = aVolPnts[0];
rPoly3D[nIdx++] = aVolPnts[3];
}
if(nZeroCnt < 2)
{
if(nZeroCnt == 0 || aDiff.X() == 0)
{
// 4
// /
// 7---6
// |
// |
// 3
rPoly3D[nIdx++] = aVolPnts[7];
rPoly3D[nIdx++] = aVolPnts[6];
rPoly3D[nIdx++] = aVolPnts[7];
rPoly3D[nIdx++] = aVolPnts[3];
rPoly3D[nIdx++] = aVolPnts[7];
rPoly3D[nIdx++] = aVolPnts[4];
}
if(nZeroCnt == 0 || (aDiff.Y() == 0))
{
// 6
// | 1
// |/
// 3---2
rPoly3D[nIdx++] = aVolPnts[2];
rPoly3D[nIdx++] = aVolPnts[3];
rPoly3D[nIdx++] = aVolPnts[2];
rPoly3D[nIdx++] = aVolPnts[6];
rPoly3D[nIdx++] = aVolPnts[2];
rPoly3D[nIdx++] = aVolPnts[1];
}
if(nZeroCnt == 0 || (aDiff.Z() == 0))
{
// 4---5
// /|
// 6 |
// 1
rPoly3D[nIdx++] = aVolPnts[5];
rPoly3D[nIdx++] = aVolPnts[4];
rPoly3D[nIdx++] = aVolPnts[5];
rPoly3D[nIdx++] = aVolPnts[1];
rPoly3D[nIdx++] = aVolPnts[5];
rPoly3D[nIdx++] = aVolPnts[6];
}
}
}
/*************************************************************************
|*
|* Konstruktor des Point-Iterators
|*
\************************************************************************/
Vol3DPointIterator::Vol3DPointIterator(const Volume3D& rVol, const Matrix4D* pTf)
: rVolume(rVol),
pTransform(pTf),
nIndex(0)
{
DBG_ASSERT(rVol.IsValid(), "Vol3DPointIterator-Aufruf mit ungueltigem Volume3D!");
a3DExtent = rVolume.aMaxVec - rVolume.aMinVec;
}
/*************************************************************************
|*
|* Gibt die einzelnen Punkte des (ggf. transformierten) Volumens zurueck
|*
|* 4---5 -> Reihenfolge der Punktausgabe (untransformiert)
|* /| /|
|* 7---6 |
|* | 0-|-1
|* |/ |/
|* 3---2
|*
\************************************************************************/
BOOL Vol3DPointIterator::Next(Vector3D& rVec)
{
if(nIndex > 7)
{
return FALSE;
}
else
{
rVec = rVolume.aMinVec;
if(nIndex >= 4)
rVec.Y() += a3DExtent.Y();
switch(nIndex)
{
case 6:
case 2: rVec.Z() += a3DExtent.Z();
case 5:
case 1: rVec.X() += a3DExtent.X();
break;
case 7:
case 3: rVec.Z() += a3DExtent.Z();
break;
}
nIndex++;
if(pTransform)
rVec *= *pTransform;
return TRUE;
}
}
|
