void EdgeGroup::synchronizeEdges()
{
QList<qlonglong> edgeKeys = edges->keys();
for (int i = 0; i < 2; i++)
{
osg::ref_ptr<osg::Geometry> geometry = edgeGroup->getChild(i)->asGeode()->getDrawable(0)->asGeometry();
const osg::Geometry::PrimitiveSetList primitives = geometry->getPrimitiveSetList();
for (unsigned int x = 0; x < primitives.size() ; x++)
{
Data::Edge * e = dynamic_cast<Data::Edge * >(primitives.at(x).get());
if (!edgeKeys.contains(e->getId()))
{
geometry->removePrimitiveSet(geometry->getPrimitiveSetIndex((e)));
}
}
}
QMap<qlonglong, osg::ref_ptr<Data::Edge> >::iterator ie = edges->begin();
while (ie != edges->end())
{
if (!(*ie)->isOriented() && geometry->getPrimitiveSetIndex((*ie)) == geometry->getNumPrimitiveSets())
geometry->addPrimitiveSet(*ie);
else if ((*ie)->isOriented() && orientedGeometry->getPrimitiveSetIndex((*ie)) == orientedGeometry->getNumPrimitiveSets())
orientedGeometry->addPrimitiveSet(*ie);
ie++;
}
}
void TriStripVisitor::mergeTriangleStrips(osg::Geometry::PrimitiveSetList &primitives)
{
int nbtristrip = 0;
int nbtristripVertexes = 0;
for (unsigned int i = 0; i < primitives.size(); ++i)
{
osg::PrimitiveSet *ps = primitives[i].get();
osg::DrawElements *de = ps->getDrawElements();
if (de && de->getMode() == osg::PrimitiveSet::TRIANGLE_STRIP)
{
++nbtristrip;
nbtristripVertexes += de->getNumIndices();
}
}
if (nbtristrip > 0)
{
osg::notify(osg::NOTICE) << "found " << nbtristrip << " tristrip, "
<< "total indices " << nbtristripVertexes
<< " should result to " << nbtristripVertexes + nbtristrip * 2
<< " after connection" << std::endl;
osg::DrawElementsUInt *ndw = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLE_STRIP);
for (unsigned int i = 0; i < primitives.size(); ++i)
{
osg::PrimitiveSet *ps = primitives[i].get();
if (ps && ps->getMode() == osg::PrimitiveSet::TRIANGLE_STRIP)
{
osg::DrawElements *de = ps->getDrawElements();
if (de)
{
// if connection needed insert degenerate triangles
if (ndw->getNumIndices() != 0 && ndw->back() != de->getElement(0))
{
// duplicate last vertex
ndw->addElement(ndw->back());
// insert first vertex of next strip
ndw->addElement(de->getElement(0));
}
if (ndw->getNumIndices() % 2 != 0)
{
// add a dummy vertex to reverse the strip
ndw->addElement(de->getElement(0));
}
for (unsigned int j = 0; j < de->getNumIndices(); j++)
{
ndw->addElement(de->getElement(j));
}
}
}
}
for (int i = primitives.size() - 1; i >= 0; --i)
{
osg::PrimitiveSet *ps = primitives[i].get();
// remove null primitive sets and all primitives that have been merged
// (i.e. all TRIANGLE_STRIP DrawElements)
if (!ps || (ps && ps->getMode() == osg::PrimitiveSet::TRIANGLE_STRIP))
{
primitives.erase(primitives.begin() + i);
}
}
primitives.insert(primitives.begin(), ndw);
}
}