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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
///////////////////////////////////////////////////////////////////////////////
namespace basegfx
{
::rtl::OUString exportToSvg( const B2DHomMatrix& rMatrix )
{
rtl::OUStringBuffer aStrBuf;
aStrBuf.appendAscii("matrix(");
aStrBuf.append(rMatrix.get(0,0));
aStrBuf.appendAscii(", ");
aStrBuf.append(rMatrix.get(1,0));
aStrBuf.appendAscii(", ");
aStrBuf.append(rMatrix.get(0,1));
aStrBuf.appendAscii(", ");
aStrBuf.append(rMatrix.get(1,1));
aStrBuf.appendAscii(", ");
aStrBuf.append(rMatrix.get(0,2));
aStrBuf.appendAscii(", ");
aStrBuf.append(rMatrix.get(1,2));
aStrBuf.appendAscii(")");
return aStrBuf.makeStringAndClear();
}
namespace tools
{
void createSinCosOrthogonal(double& o_rSin, double& o_rCos, double fRadiant)
{
if( fTools::equalZero( fmod( fRadiant, F_PI2 ) ) )
{
// determine quadrant
const sal_Int32 nQuad(
(4 + fround( 4/F_2PI*fmod( fRadiant, F_2PI ) )) % 4 );
switch( nQuad )
{
case 0: // -2pi,0,2pi
o_rSin = 0.0;
o_rCos = 1.0;
break;
case 1: // -3/2pi,1/2pi
o_rSin = 1.0;
o_rCos = 0.0;
break;
case 2: // -pi,pi
o_rSin = 0.0;
o_rCos = -1.0;
break;
case 3: // -1/2pi,3/2pi
o_rSin = -1.0;
o_rCos = 0.0;
break;
default:
OSL_FAIL( "createSinCos: Impossible case reached" );
}
}
else
{
// TODO(P1): Maybe use glibc's sincos here (though
// that's kinda non-portable...)
o_rSin = sin(fRadiant);
o_rCos = cos(fRadiant);
}
}
B2DHomMatrix createScaleB2DHomMatrix(double fScaleX, double fScaleY)
{
B2DHomMatrix aRetval;
const double fOne(1.0);
if(!fTools::equal(fScaleX, fOne))
{
aRetval.set(0, 0, fScaleX);
}
if(!fTools::equal(fScaleY, fOne))
{
aRetval.set(1, 1, fScaleY);
}
return aRetval;
}
B2DHomMatrix createShearXB2DHomMatrix(double fShearX)
{
B2DHomMatrix aRetval;
if(!fTools::equalZero(fShearX))
{
aRetval.set(0, 1, fShearX);
}
return aRetval;
}
B2DHomMatrix createShearYB2DHomMatrix(double fShearY)
{
B2DHomMatrix aRetval;
if(!fTools::equalZero(fShearY))
{
aRetval.set(1, 0, fShearY);
}
return aRetval;
}
B2DHomMatrix createRotateB2DHomMatrix(double fRadiant)
{
B2DHomMatrix aRetval;
if(!fTools::equalZero(fRadiant))
{
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
aRetval.set(0, 0, fCos);
aRetval.set(1, 1, fCos);
aRetval.set(1, 0, fSin);
aRetval.set(0, 1, -fSin);
}
return aRetval;
}
B2DHomMatrix createTranslateB2DHomMatrix(double fTranslateX, double fTranslateY)
{
B2DHomMatrix aRetval;
if(!(fTools::equalZero(fTranslateX) && fTools::equalZero(fTranslateY)))
{
aRetval.set(0, 2, fTranslateX);
aRetval.set(1, 2, fTranslateY);
}
return aRetval;
}
B2DHomMatrix createScaleShearXRotateTranslateB2DHomMatrix(
double fScaleX, double fScaleY,
double fShearX,
double fRadiant,
double fTranslateX, double fTranslateY)
{
const double fOne(1.0);
if(fTools::equal(fScaleX, fOne) && fTools::equal(fScaleY, fOne))
{
/// no scale, take shortcut
return createShearXRotateTranslateB2DHomMatrix(fShearX, fRadiant, fTranslateX, fTranslateY);
}
else
{
/// scale used
if(fTools::equalZero(fShearX))
{
/// no shear
if(fTools::equalZero(fRadiant))
{
/// no rotate, take shortcut
return createScaleTranslateB2DHomMatrix(fScaleX, fScaleY, fTranslateX, fTranslateY);
}
else
{
/// rotate and scale used, no shear
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fCos * fScaleX,
/* Row 0, Column 1 */ fScaleY * -fSin,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ fSin * fScaleX,
/* Row 1, Column 1 */ fScaleY * fCos,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
}
else
{
/// scale and shear used
if(fTools::equalZero(fRadiant))
{
/// scale and shear, but no rotate
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fScaleX,
/* Row 0, Column 1 */ fScaleY * fShearX,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ 0.0,
/* Row 1, Column 1 */ fScaleY,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
else
{
/// scale, shear and rotate used
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fCos * fScaleX,
/* Row 0, Column 1 */ fScaleY * ((fCos * fShearX) - fSin),
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ fSin * fScaleX,
/* Row 1, Column 1 */ fScaleY * ((fSin * fShearX) + fCos),
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
}
}
}
B2DHomMatrix createShearXRotateTranslateB2DHomMatrix(
double fShearX,
double fRadiant,
double fTranslateX, double fTranslateY)
{
if(fTools::equalZero(fShearX))
{
/// no shear
if(fTools::equalZero(fRadiant))
{
/// no shear, no rotate, take shortcut
return createTranslateB2DHomMatrix(fTranslateX, fTranslateY);
}
else
{
/// no shear, but rotate used
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fCos,
/* Row 0, Column 1 */ -fSin,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ fSin,
/* Row 1, Column 1 */ fCos,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
}
else
{
/// shear used
if(fTools::equalZero(fRadiant))
{
/// no rotate, but shear used
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ 1.0,
/* Row 0, Column 1 */ fShearX,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ 0.0,
/* Row 1, Column 1 */ 1.0,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
else
{
/// shear and rotate used
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fCos,
/* Row 0, Column 1 */ (fCos * fShearX) - fSin,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ fSin,
/* Row 1, Column 1 */ (fSin * fShearX) + fCos,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
}
}
B2DHomMatrix createScaleTranslateB2DHomMatrix(
double fScaleX, double fScaleY,
double fTranslateX, double fTranslateY)
{
const double fOne(1.0);
if(fTools::equal(fScaleX, fOne) && fTools::equal(fScaleY, fOne))
{
/// no scale, take shortcut
return createTranslateB2DHomMatrix(fTranslateX, fTranslateY);
}
else
{
/// scale used
if(fTools::equalZero(fTranslateX) && fTools::equalZero(fTranslateY))
{
/// no translate, but scale.
B2DHomMatrix aRetval;
aRetval.set(0, 0, fScaleX);
aRetval.set(1, 1, fScaleY);
return aRetval;
}
else
{
/// translate and scale
B2DHomMatrix aRetval(
/* Row 0, Column 0 */ fScaleX,
/* Row 0, Column 1 */ 0.0,
/* Row 0, Column 2 */ fTranslateX,
/* Row 1, Column 0 */ 0.0,
/* Row 1, Column 1 */ fScaleY,
/* Row 1, Column 2 */ fTranslateY);
return aRetval;
}
}
}
B2DHomMatrix createRotateAroundPoint(
double fPointX, double fPointY,
double fRadiant)
{
B2DHomMatrix aRetval;
if(!fTools::equalZero(fRadiant))
{
double fSin(0.0);
double fCos(1.0);
createSinCosOrthogonal(fSin, fCos, fRadiant);
aRetval.set3x2(
/* Row 0, Column 0 */ fCos,
/* Row 0, Column 1 */ -fSin,
/* Row 0, Column 2 */ (fPointX * (1.0 - fCos)) + (fSin * fPointY),
/* Row 1, Column 0 */ fSin,
/* Row 1, Column 1 */ fCos,
/* Row 1, Column 2 */ (fPointY * (1.0 - fCos)) - (fSin * fPointX));
}
return aRetval;
}
} // end of namespace tools
} // end of namespace basegfx
///////////////////////////////////////////////////////////////////////////////
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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