tolerate billboards under a singular transform

2003-06-27 23:08:21 +00:00 · 2003-06-27 23:08:21 +00:00 · 5fee00c7df
parent 8d70eeb6ab
commit 5fee00c7df
1 changed files with 5 additions and 0 deletions
--- a/panda/src/pgraph/billboardEffect.cxx
+++ b/panda/src/pgraph/billboardEffect.cxx
@ -110,6 +110,11 @@ do_billboard(const TransformState *net_transform,
    camera_transform = _look_at.get_net_transform();
  }

+  if (net_transform->is_singular()) {
+    // If we're under a singular transform, never mind.
+    return TransformState::make_identity();
+  }
+
  CPT(TransformState) rel_transform =
    net_transform->invert_compose(camera_transform);
  const LMatrix4f &rel_mat = rel_transform->get_mat();