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101 lines
2.5 KiB
101 lines
2.5 KiB
/*
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Copyright (C) 2001-2003 KSVG Team
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "SVGPointListImpl.h"
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#include "SVGPolylineElementImpl.h"
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#include "SVGDocumentImpl.h"
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#include "KSVGCanvas.h"
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#include "SVGAngleImpl.h"
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using namespace KSVG;
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SVGPolylineElementImpl::SVGPolylineElementImpl(DOM::ElementImpl *impl) : SVGPolyElementImpl(impl)
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{
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m_isOpenPath = true;
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}
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void SVGPolylineElementImpl::createItem(KSVGCanvas *c)
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{
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if(!c)
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c = ownerDoc()->canvas();
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if(!m_item)
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{
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m_item = c->createPolyline(this);
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c->insert(m_item);
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}
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}
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void SVGPolylineElementImpl::drawMarkers()
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{
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SVGPointListImpl *pts = points();
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unsigned int nrPoints = pts->numberOfItems();
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if(nrPoints > 0 && hasMarkers())
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{
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if(hasStartMarker())
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{
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double outSlope;
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if(!findOutSlope(0, &outSlope))
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outSlope = 0;
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doStartMarker(this, this, pts->getItem(0)->x(), pts->getItem(0)->y(), outSlope);
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}
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if(hasMidMarker())
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{
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for(unsigned int i = 1; i < nrPoints - 1; ++i)
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{
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double inSlope;
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double outSlope;
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bool haveInSlope = findInSlope(i, &inSlope);
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bool haveOutSlope = findOutSlope(i, &outSlope);
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if(!haveInSlope && haveOutSlope)
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inSlope = outSlope;
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else if(haveInSlope && !haveOutSlope)
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outSlope = inSlope;
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else if(!haveInSlope && !haveOutSlope)
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{
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inSlope = 0;
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outSlope = 0;
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}
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double bisector = SVGAngleImpl::shortestArcBisector(inSlope, outSlope);
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doMidMarker(this, this, pts->getItem(i)->x(), pts->getItem(i)->y(), bisector);
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}
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}
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if(hasEndMarker())
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{
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double inSlope;
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if(!findInSlope(nrPoints - 1, &inSlope))
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inSlope = 0;
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doEndMarker(this, this, pts->getItem(nrPoints - 1)->x(), pts->getItem(nrPoints - 1)->y(), inSlope);
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}
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}
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}
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// vim:ts=4:noet
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