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don't use concave quads in tristrips

This commit is contained in:
David Rose 2006-01-26 01:18:23 +00:00
parent 5c623893be
commit 43a3b6a7a8
1 changed files with 7 additions and 3 deletions
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10
panda/src/egg/eggMesher.cxx
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@ -193,11 +193,15 @@ clear() {
////////////////////////////////////////////////////////////////////
bool EggMesher::
add_polygon(const EggPolygon *egg_poly, EggMesherStrip::MesherOrigin origin) {
if (egg_poly->size() != 3 && egg_poly->size() != 4) {
// If we have a higher-order polygon, triangulate it
if (egg_poly->size() != 3) {
// If we have a higher-order or concave polygon, triangulate it
// automatically.
// We'll keep quads, unless they're concave.
bool convex_also = (egg_poly->size() != 4);
PT(EggGroupNode) temp_group = new EggGroupNode;
bool result = egg_poly->triangulate_into(temp_group, true);
bool result = egg_poly->triangulate_into(temp_group, convex_also);
EggGroupNode::iterator ci;
for (ci = temp_group->begin(); ci != temp_group->end(); ++ci) {
add_polygon(DCAST(EggPolygon, *ci), EggMesherStrip::MO_user);