From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 24 Sep 2014 17:36:33 +0000 (+0300)
Subject: Improve bounding sphere handling in Object
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=e720536d5feacf6136b5621c98b72d206e44f64c

Improve bounding sphere handling in Object
---

diff --git a/source/object.cpp b/source/object.cpp
index efd84db8..9aba5466 100644
--- a/source/object.cpp
+++ b/source/object.cpp
@@ -53,6 +53,8 @@ void Object::set_mesh(unsigned i, const Mesh *m)
 	if(i==0 && m)
 		if(ResourceManager *rm = m->get_manager())
 			rm->watch_resource(*m, *this);
+
+	update_bounding_sphere();
 }
 
 void Object::update_bounding_sphere()
@@ -61,12 +63,15 @@ void Object::update_bounding_sphere()
 	for(vector<RefPtr<const Mesh> >::const_iterator i=meshes.begin(); i!=meshes.end(); ++i)
 	{
 		const VertexArray &vertices = (*i)->get_vertices();
+
 		int offset = vertices.get_format().offset(VERTEX3);
+		bool three = true;
 		if(offset<0)
 		{
-			// TODO Handle two-dimensional meshes
-			bounding_sphere = Geometry::BoundingSphere<float, 3>();
-			return;
+			offset = vertices.get_format().offset(VERTEX2);
+			three = false;
+			if(offset<0)
+				continue;
 		}
 
 		unsigned n_vertices = vertices.size();
@@ -74,7 +79,7 @@ void Object::update_bounding_sphere()
 		for(unsigned j=0; j<n_vertices; ++j)
 		{
 			const float *v = vertices[j];
-			points.push_back(Vector3(v[offset], v[offset+1], v[offset+2]));
+			points.push_back(Vector3(v[offset], v[offset+1], (three ? v[offset+2] : 0.0f)));
 		}
 	}