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/* -*- 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 <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include "svx/polypolygoneditor.hxx"
namespace sdr {
PolyPolygonEditor::PolyPolygonEditor( const basegfx::B2DPolyPolygon& rPolyPolygon, bool bClosed )
: maPolyPolygon( rPolyPolygon )
, mbIsClosed( bClosed )
{
}
bool PolyPolygonEditor::DeletePoints( const std::set< sal_uInt16 >& rAbsPoints )
{
bool bPolyPolyChanged = false;
std::set< sal_uInt16 >::const_reverse_iterator aIter;( rAbsPoints.rbegin() );
for( aIter = rAbsPoints.rbegin(); aIter != rAbsPoints.rend(); ++aIter )
{
sal_uInt32 nPoly, nPnt;
if( GetRelativePolyPoint(maPolyPolygon,(*aIter), nPoly, nPnt) )
{
// remove point
basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPoly));
aCandidate.remove(nPnt);
if( ( mbIsClosed && aCandidate.count() < 3L) || (aCandidate.count() < 2L) )
{
maPolyPolygon.remove(nPoly);
}
else
{
maPolyPolygon.setB2DPolygon(nPoly, aCandidate);
}
bPolyPolyChanged = true;
}
}
return bPolyPolyChanged;
}
bool PolyPolygonEditor::SetSegmentsKind(SdrPathSegmentKind eKind, const std::set< sal_uInt16 >& rAbsPoints )
{
bool bPolyPolyChanged = false;
std::set< sal_uInt16 >::const_reverse_iterator aIter;( rAbsPoints.rbegin() );
for( aIter = rAbsPoints.rbegin(); aIter != rAbsPoints.rend(); ++aIter )
{
sal_uInt32 nPolyNum, nPntNum;
if(PolyPolygonEditor::GetRelativePolyPoint(maPolyPolygon, (*aIter), nPolyNum, nPntNum))
{
// do change at aNewPolyPolygon. Take a look at edge.
basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPolyNum));
bool bCandidateChanged(false);
const sal_uInt32 nCount(aCandidate.count());
if(nCount && (nPntNum + 1 < nCount || aCandidate.isClosed()))
{
// it's a valid edge, check control point usage
const sal_uInt32 nNextIndex((nPntNum + 1) % nCount);
const bool bContolUsed(aCandidate.areControlPointsUsed()
&& (aCandidate.isNextControlPointUsed(nPntNum) || aCandidate.isPrevControlPointUsed(nNextIndex)));
if(bContolUsed)
{
if(SDRPATHSEGMENT_TOGGLE == eKind || SDRPATHSEGMENT_LINE == eKind)
{
// remove control
aCandidate.resetNextControlPoint(nPntNum);
aCandidate.resetPrevControlPoint(nNextIndex);
bCandidateChanged = true;
}
}
else
{
if(SDRPATHSEGMENT_TOGGLE == eKind || SDRPATHSEGMENT_CURVE == eKind)
{
// add control
const basegfx::B2DPoint aStart(aCandidate.getB2DPoint(nPntNum));
const basegfx::B2DPoint aEnd(aCandidate.getB2DPoint(nNextIndex));
aCandidate.setNextControlPoint(nPntNum, interpolate(aStart, aEnd, (1.0 / 3.0)));
aCandidate.setPrevControlPoint(nNextIndex, interpolate(aStart, aEnd, (2.0 / 3.0)));
bCandidateChanged = true;
}
}
if(bCandidateChanged)
{
maPolyPolygon.setB2DPolygon(nPolyNum, aCandidate);
bPolyPolyChanged = true;
}
}
}
}
return bPolyPolyChanged;
}
bool PolyPolygonEditor::SetPointsSmooth( basegfx::B2VectorContinuity eFlags, const std::set< sal_uInt16 >& rAbsPoints)
{
bool bPolyPolygonChanged(false);
std::set< sal_uInt16 >::const_reverse_iterator aIter;( rAbsPoints.rbegin() );
for( aIter = rAbsPoints.rbegin(); aIter != rAbsPoints.rend(); ++aIter )
{
sal_uInt32 nPolyNum, nPntNum;
if(PolyPolygonEditor::GetRelativePolyPoint(maPolyPolygon, (*aIter), nPolyNum, nPntNum))
{
// do change at aNewPolyPolygon...
basegfx::B2DPolygon aCandidate(maPolyPolygon.getB2DPolygon(nPolyNum));
// set continuity in point, make sure there is a curve
bool bPolygonChanged(false);
bPolygonChanged = basegfx::tools::expandToCurveInPoint(aCandidate, nPntNum);
bPolygonChanged |= basegfx::tools::setContinuityInPoint(aCandidate, nPntNum, eFlags);
if(bPolygonChanged)
{
maPolyPolygon.setB2DPolygon(nPolyNum, aCandidate);
bPolyPolygonChanged = true;
}
}
}
return bPolyPolygonChanged;
}
bool PolyPolygonEditor::GetRelativePolyPoint( const basegfx::B2DPolyPolygon& rPoly, sal_uInt32 nAbsPnt, sal_uInt32& rPolyNum, sal_uInt32& rPointNum )
{
const sal_uInt32 nPolyCount(rPoly.count());
sal_uInt32 nPolyNum(0L);
while(nPolyNum < nPolyCount)
{
const sal_uInt32 nPointCount(rPoly.getB2DPolygon(nPolyNum).count());
if(nAbsPnt < nPointCount)
{
rPolyNum = nPolyNum;
rPointNum = nAbsPnt;
return true;
}
else
{
nPolyNum++;
nAbsPnt -= nPointCount;
}
}
return false;
}
} // end of namespace sdr
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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