X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fobject.cpp;fp=source%2Fobject.cpp;h=d35517bf3adeb43773760cc2d6648d65f05a1c06;hp=ae38af6b4e7f2c9274206561759bfdef4d442987;hb=46921b54c8252bb535a3b2cb7be97eb38e66eaed;hpb=4edd75061a1e24572bd672fb72e1bc1838008ce7

diff --git a/source/object.cpp b/source/object.cpp
index ae38af6b..d35517bf 100644
--- a/source/object.cpp
+++ b/source/object.cpp
@@ -41,6 +41,32 @@ void Object::set_mesh(unsigned i, const Mesh *m)
 	meshes[i].keep();
 }
 
+void Object::update_bounding_sphere()
+{
+	vector<Vector3> points;
+	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);
+		if(offset<0)
+		{
+			// TODO Handle two-dimensional meshes
+			bounding_sphere = Geometry::BoundingSphere<float, 3>();
+			return;
+		}
+
+		unsigned n_vertices = vertices.size();
+		points.reserve(points.size()+n_vertices);
+		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]));
+		}
+	}
+
+	bounding_sphere = Geometry::BoundingSphere<float, 3>::from_point_cloud(points.begin(), points.end());
+}
+
 const Mesh *Object::get_mesh(unsigned i) const
 {
 	if(i>=meshes.size())
@@ -136,6 +162,11 @@ void Object::Loader::init()
 	add("lod_mesh", &Loader::mesh_lod);
 }
 
+void Object::Loader::finish()
+{
+	obj.update_bounding_sphere();
+}
+
 void Object::Loader::mesh_inline()
 {
 	RefPtr<Mesh> msh = new Mesh;