const BoundingBox APolygonalMesh::calculateBBox(unsigned icomponent) const
{
Vector3F * p = points();
unsigned * v = polygonIndices(icomponent);
const unsigned n = faceCount(icomponent);
BoundingBox box;
unsigned i = 0;
for(;i<n; i++) {
box.updateMin(p[v[i]]);
box.updateMax(p[v[i]]);
}
return box;
}
unsigned PatchMesh::processQuadFromPolygon()
{
unsigned i, j;
m_numQuads = 0;
for(i = 0; i < getNumPolygons(); i++) {
if(polygonCounts()[i] < 5)
m_numQuads++;
}
if(m_numQuads < 1) return 0;
m_quadIndices.reset(new unsigned[m_numQuads * 4]);
m_quadUVIds.reset(new unsigned[m_numQuads * 4]);
unsigned * polygonIndir = polygonIndices();
unsigned * uvIndir = uvIds();
unsigned fc, ie = 0;
for(i = 0; i < getNumPolygons(); i++) {
fc = polygonCounts()[i];
if(fc == 4) {
for(j = 0; j < 4; j++) {
m_quadIndices[ie] = polygonIndir[j];
m_quadUVIds[ie] = uvIndir[j];
ie++;
}
}
else if(fc == 3) {
for(j = 0; j < 3; j++) {
m_quadIndices[ie] = polygonIndir[j];
m_quadUVIds[ie] = uvIndir[j];
ie++;
}
m_quadIndices[ie] = m_quadIndices[ie - 3];
m_quadUVIds[ie] = m_quadUVIds[ie - 3];
ie++;
}
polygonIndir += fc;
uvIndir += fc;
}
return m_numQuads;
}