/// remove vertex with given index
void GLData::removeVertex( unsigned int vertexIdx ) {
// i) for each polygon of this vertex, call remove_polygon:
typedef std::set< unsigned int, std::greater<unsigned int> > PolygonSet;
PolygonSet pset = vertexDataArray[vertexIdx].polygons;
BOOST_FOREACH( unsigned int polygonIdx, pset ) {
removePolygon( polygonIdx );
}
void GLData::removeVertex( unsigned int vertexIdx ) {
//std::cout << "GLData::removeVertex( " << vertexIdx << " )\n";
// i) for each polygon of this vertex, call remove_polygon:
BOOST_FOREACH( unsigned int polygonIdx, vertexDataArray[vertexIdx].polygons ) {
removePolygon( polygonIdx );
}
// ii) overwrite with last vertex:
unsigned int lastIdx = vertexArray.size()-1;
if (vertexIdx != lastIdx) {
vertexArray[vertexIdx] = vertexArray[lastIdx];
vertexDataArray[vertexIdx] = vertexDataArray[lastIdx];
// notify octree-node with new index here!
// vertex that was at lastIdx is now at vertexIdx
vertexDataArray[vertexIdx].node->swapIndex( lastIdx, vertexIdx );
// request each polygon to re-number this vertex.
BOOST_FOREACH( unsigned int polygonIdx, vertexDataArray[vertexIdx].polygons ) {
unsigned int idx = polygonIdx*polyVerts;
for (int m=0;m<polyVerts;++m) {
if ( indexArray[ idx+m ] == lastIdx )
indexArray[ idx+m ] = vertexIdx;
}
}
}
GLRenderer::~GLRenderer() {
glDeleteBuffers(1, &m_ParticleVBO);
glDeleteVertexArrays(1, &m_ParticleVAO);
for(size_t i = 0; i < m_PolygonVBOs.size(); ++i) {
removePolygon(i);
}
}
void MeshBuilder::removePolygons()
{
for ( int i = polygons()-1 ; i >= 0 ; --i )
removePolygon(i);
}
