86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*
|
|
* This file incorporates work covered by the following license notice:
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed
|
|
* with this work for additional information regarding copyright
|
|
* ownership. The ASF licenses this file to you under the Apache
|
|
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
|
|
*/
|
|
|
|
#include <tools/gen.hxx>
|
|
|
|
void PointTemplateBase::RotateAround( PointTemplateBase& rPoint,
|
|
Degree10 nOrientation ) const
|
|
{
|
|
tools::Long nX = rPoint.mnA;
|
|
tools::Long nY = rPoint.mnB;
|
|
RotateAround(nX, nY, nOrientation);
|
|
rPoint.mnA = nX;
|
|
rPoint.mnB = nY;
|
|
}
|
|
|
|
void PointTemplateBase::RotateAround( tools::Long& rX, tools::Long& rY,
|
|
Degree10 nOrientation ) const
|
|
{
|
|
const tools::Long nOriginX = mnA;
|
|
const tools::Long nOriginY = mnB;
|
|
|
|
if ( (nOrientation >= 0_deg10) && !(nOrientation % 900_deg10) )
|
|
{
|
|
if ( nOrientation >= 3600_deg10 )
|
|
nOrientation %= 3600_deg10;
|
|
|
|
if ( nOrientation )
|
|
{
|
|
rX -= nOriginX;
|
|
rY -= nOriginY;
|
|
|
|
if ( nOrientation == 900_deg10 )
|
|
{
|
|
tools::Long nTemp = rX;
|
|
rX = rY;
|
|
rY = -nTemp;
|
|
}
|
|
else if ( nOrientation == 1800_deg10 )
|
|
{
|
|
rX = -rX;
|
|
rY = -rY;
|
|
}
|
|
else /* ( nOrientation == 2700 ) */
|
|
{
|
|
tools::Long nTemp = rX;
|
|
rX = -rY;
|
|
rY = nTemp;
|
|
}
|
|
|
|
rX += nOriginX;
|
|
rY += nOriginY;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
double nRealOrientation = toRadians(nOrientation);
|
|
double nCos = cos( nRealOrientation );
|
|
double nSin = sin( nRealOrientation );
|
|
|
|
// Translation...
|
|
tools::Long nX = rX-nOriginX;
|
|
tools::Long nY = rY-nOriginY;
|
|
|
|
// Rotation...
|
|
rX = + static_cast<tools::Long>(nCos*nX + nSin*nY) + nOriginX;
|
|
rY = - static_cast<tools::Long>(nSin*nX - nCos*nY) + nOriginY;
|
|
}
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|