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/*************************************************************************
*
* $RCSfile: b2dhompoint.cxx,v $
*
* $Revision: 1.3 $
*
* last change: $Author: aw $ $Date: 2003-11-05 12:25:53 $
*
* 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 _BGFX_POINT_B2DHOMPOINT_HXX
#include <basegfx/point/b2dhompoint.hxx>
#endif
#ifndef _BGFX_MATRIX_B2DHOMMATRIX_HXX
#include <basegfx/matrix/b2dhommatrix.hxx>
#endif
#ifndef _BGFX_NUMERIC_FTOOLS_HXX
#include <basegfx/numeric/ftools.hxx>
#endif
namespace basegfx
{
namespace point
{
sal_Bool B2DHomPoint::implIsHomogenized() const
{
const double fOne(1.0);
return ::basegfx::numeric::fTools::equal(fOne, mfW);
}
void B2DHomPoint::implHomogenize()
{
const double fFactor(1.0 / mfW);
maTuple.setX(maTuple.getX() * fFactor);
maTuple.setY(maTuple.getY() * fFactor);
mfW = 1.0;
}
void B2DHomPoint::implTestAndHomogenize() const
{
if(!implIsHomogenized())
((B2DHomPoint*)this)->implHomogenize();
}
B2DPoint B2DHomPoint::getB2DPoint() const
{
implTestAndHomogenize();
return B2DPoint(maTuple.getX(), maTuple.getY());
}
double B2DHomPoint::getX() const
{
implTestAndHomogenize();
return maTuple.getX();
}
double B2DHomPoint::getY() const
{
implTestAndHomogenize();
return maTuple.getY();
}
void B2DHomPoint::setX(double fX)
{
maTuple.setX(implIsHomogenized() ? fX : fX * mfW );
}
void B2DHomPoint::setY(double fY)
{
maTuple.setY(implIsHomogenized() ? fY : fY * mfW );
}
B2DHomPoint& B2DHomPoint::operator+=( const B2DHomPoint& rPnt )
{
maTuple.setX(getX() * rPnt.mfW + rPnt.getX() * mfW);
maTuple.setY(getY() * rPnt.mfW + rPnt.getY() * mfW);
mfW = mfW * rPnt.mfW;
return *this;
}
B2DHomPoint& B2DHomPoint::operator-=( const B2DHomPoint& rPnt )
{
maTuple.setX(getX() * rPnt.mfW - rPnt.getX() * mfW);
maTuple.setY(getY() * rPnt.mfW - rPnt.getY() * mfW);
mfW = mfW * rPnt.mfW;
return *this;
}
B2DHomPoint& B2DHomPoint::operator*=(double t)
{
if(!::basegfx::numeric::fTools::equalZero(t))
{
mfW /= t;
}
return *this;
}
B2DHomPoint& B2DHomPoint::operator*=( const matrix::B2DHomMatrix& rMat )
{
const double fTempX( rMat.get(0,0)*maTuple.getX() +
rMat.get(0,1)*maTuple.getY() +
rMat.get(0,2)*mfW );
const double fTempY( rMat.get(1,0)*maTuple.getX() +
rMat.get(1,1)*maTuple.getY() +
rMat.get(1,2)*mfW );
const double fTempZ( rMat.get(2,0)*maTuple.getX() +
rMat.get(2,1)*maTuple.getY() +
rMat.get(2,2)*mfW );
maTuple.setX( fTempX );
maTuple.setY( fTempY );
mfW = fTempZ;
return *this;
}
B2DHomPoint& B2DHomPoint::operator/=(double t)
{
mfW *= t;
return *this;
}
B2DHomPoint& B2DHomPoint::operator-(void)
{
mfW = -mfW;
return *this;
}
sal_Bool B2DHomPoint::operator==( const B2DHomPoint& rPnt ) const
{
implTestAndHomogenize();
return (maTuple == rPnt.maTuple);
}
sal_Bool B2DHomPoint::operator!=( const B2DHomPoint& rPnt ) const
{
implTestAndHomogenize();
return (maTuple != rPnt.maTuple);
}
B2DHomPoint& B2DHomPoint::operator=( const B2DHomPoint& rPnt )
{
maTuple = rPnt.maTuple;
mfW = rPnt.mfW;
return *this;
}
B2DHomPoint min(const B2DHomPoint& rVecA, const B2DHomPoint& rVecB)
{
B2DHomPoint aMin(
(rVecB.getX() < rVecA.getX()) ? rVecB.getX() : rVecA.getX(),
(rVecB.getY() < rVecA.getY()) ? rVecB.getY() : rVecA.getY());
return aMin;
}
B2DHomPoint max(const B2DHomPoint& rVecA, const B2DHomPoint& rVecB)
{
B2DHomPoint aMax(
(rVecB.getX() > rVecA.getX()) ? rVecB.getX() : rVecA.getX(),
(rVecB.getY() > rVecA.getY()) ? rVecB.getY() : rVecA.getY());
return aMax;
}
B2DHomPoint abs(const B2DHomPoint& rVec)
{
B2DHomPoint aAbs(
(0.0 > rVec.getX()) ? -rVec.getX() : rVec.getX(),
(0.0 > rVec.getY()) ? -rVec.getY() : rVec.getY());
return aAbs;
}
B2DHomPoint interpolate(B2DHomPoint& rOld1, B2DHomPoint& rOld2, double t)
{
B2DHomPoint aInt(
((rOld2.getX() - rOld1.getX()) + t) + rOld1.getX(),
((rOld2.getY() - rOld1.getY()) + t) + rOld1.getY());
return aInt;
}
B2DHomPoint average(B2DHomPoint& rOld1, B2DHomPoint& rOld2)
{
B2DHomPoint aAvg(
(rOld1.getX() + rOld2.getX()) * 0.5,
(rOld1.getY() + rOld2.getY()) * 0.5);
return aAvg;
}
B2DHomPoint average(B2DHomPoint& rOld1, B2DHomPoint& rOld2, B2DHomPoint& rOld3)
{
B2DHomPoint aAvg(
(rOld1.getX() + rOld2.getX() + rOld3.getX()) * (1.0 / 3.0),
(rOld1.getY() + rOld2.getY() + rOld3.getY()) * (1.0 / 3.0));
return aAvg;
}
B2DHomPoint operator+(const B2DHomPoint& rVecA, const B2DHomPoint& rVecB)
{
B2DHomPoint aSum(rVecA);
aSum += rVecB;
return aSum;
}
B2DHomPoint operator-(const B2DHomPoint& rVecA, const B2DHomPoint& rVecB)
{
B2DHomPoint aSub(rVecA);
aSub -= rVecB;
return aSub;
}
B2DHomPoint operator*(const B2DHomPoint& rVec, double t)
{
B2DHomPoint aNew(rVec);
aNew *= t;
return aNew;
}
B2DHomPoint operator*(double t, const B2DHomPoint& rVec)
{
B2DHomPoint aNew(rVec);
aNew *= t;
return aNew;
}
B2DHomPoint operator*( const matrix::B2DHomMatrix& rMat, const B2DHomPoint& rPoint )
{
B2DHomPoint aNew(rPoint);
return aNew*=rMat;
}
B2DHomPoint operator/(const B2DHomPoint& rVec, double t)
{
B2DHomPoint aNew(rVec);
aNew /= t;
return aNew;
}
B2DHomPoint operator/(double t, const B2DHomPoint& rVec)
{
B2DHomPoint aNew(rVec);
aNew /= t;
return aNew;
}
} // end of namespace point
} // end of namespace basegfx
// eof
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