X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fobject.cpp;h=d35517bf3adeb43773760cc2d6648d65f05a1c06;hb=46921b54c8252bb535a3b2cb7be97eb38e66eaed;hp=6bc872a198553eb38aa65ae67052b32ace758597;hpb=72790b3aba8ddc1a6d020646fb7312959729777b;p=libs%2Fgl.git

diff --git a/source/object.cpp b/source/object.cpp
index 6bc872a1..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())
@@ -103,7 +129,9 @@ void Object::render(Renderer &renderer, const ObjectInstance &inst, const Tag &t
 
 const RenderPass *Object::get_pass(const Tag &tag) const
 {
-	if(!technique || !technique->has_pass(tag))
+	if(!technique)
+		throw logic_error("!technique");
+	if(!technique->has_pass(tag))
 		return 0;
 	return &technique->get_pass(tag);
 }
@@ -134,6 +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;