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/*
Copyright (C) 2001-2003 KSVG Team
This file is part of the KDE project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "SVGPointListImpl.h"
#include "SVGPolylineElementImpl.h"
#include "SVGDocumentImpl.h"
#include "KSVGCanvas.h"
#include "SVGAngleImpl.h"
using namespace KSVG;
SVGPolylineElementImpl::SVGPolylineElementImpl(DOM::ElementImpl *impl) : SVGPolyElementImpl(impl)
{
m_isOpenPath = true;
}
void SVGPolylineElementImpl::createItem(KSVGCanvas *c)
{
if(!c)
c = ownerDoc()->canvas();
if(!m_item)
{
m_item = c->createPolyline(this);
c->insert(m_item);
}
}
void SVGPolylineElementImpl::drawMarkers()
{
SVGPointListImpl *pts = points();
unsigned int nrPoints = pts->numberOfItems();
if(nrPoints > 0 && hasMarkers())
{
if(hasStartMarker())
{
double outSlope;
if(!findOutSlope(0, &outSlope))
outSlope = 0;
doStartMarker(this, this, pts->getItem(0)->x(), pts->getItem(0)->y(), outSlope);
}
if(hasMidMarker())
{
for(unsigned int i = 1; i < nrPoints - 1; ++i)
{
double inSlope;
double outSlope;
bool haveInSlope = findInSlope(i, &inSlope);
bool haveOutSlope = findOutSlope(i, &outSlope);
if(!haveInSlope && haveOutSlope)
inSlope = outSlope;
else if(haveInSlope && !haveOutSlope)
outSlope = inSlope;
else if(!haveInSlope && !haveOutSlope)
{
inSlope = 0;
outSlope = 0;
}
double bisector = SVGAngleImpl::shortestArcBisector(inSlope, outSlope);
doMidMarker(this, this, pts->getItem(i)->x(), pts->getItem(i)->y(), bisector);
}
}
if(hasEndMarker())
{
double inSlope;
if(!findInSlope(nrPoints - 1, &inSlope))
inSlope = 0;
doEndMarker(this, this, pts->getItem(nrPoints - 1)->x(), pts->getItem(nrPoints - 1)->y(), inSlope);
}
}
}
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