X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fobject.cpp;h=a27553a6236e029c27cfe547304b00e84371f5e5;hb=3b159edbe4e80a2bc19c4c2fcd42cb996b9fbfe0;hp=fe1690d267ee3e2a433d832dc388e72ae15f66e9;hpb=5b532dcb2a4a2d15d0b6607374284c979ece36a8;p=libs%2Fgl.git

diff --git a/source/object.cpp b/source/object.cpp
index fe1690d2..a27553a6 100644
--- a/source/object.cpp
+++ b/source/object.cpp
@@ -18,10 +18,13 @@ namespace Msp {
 namespace GL {
 
 Object::Object():
-	lods(1)
+	lods(1),
+	lod0_watched(false)
 { }
 
-Object::Object(const Mesh *m, const Technique *t)
+Object::Object(const Mesh *m, const Technique *t):
+	lods(1),
+	lod0_watched(false)
 {
 	set_mesh(m);
 	set_technique(t);
@@ -29,7 +32,7 @@ Object::Object(const Mesh *m, const Technique *t)
 
 Object::~Object()
 {
-	if(lods[0].mesh)
+	if(lods[0].mesh && lod0_watched)
 		if(ResourceManager *rm = lods[0].mesh->get_manager())
 			rm->unwatch_resource(*lods[0].mesh, *this);
 }
@@ -50,15 +53,19 @@ Object::LevelOfDetail &Object::get_lod(unsigned i, const char *caller)
 void Object::set_mesh(unsigned i, const Mesh *m)
 {
 	RefPtr<const Mesh> &ptr = get_lod(i, "Object::set_mesh").mesh;
-	if(i==0 && ptr)
+	if(i==0 && ptr && lod0_watched)
 		if(ResourceManager *rm = ptr->get_manager())
 			rm->unwatch_resource(*ptr, *this);
 	ptr = m;
 	ptr.keep();
+	lod0_watched = false;
 
 	if(i==0 && m)
 		if(ResourceManager *rm = m->get_manager())
+		{
 			rm->watch_resource(*m, *this);
+			lod0_watched = true;
+		}
 
 	update_bounding_sphere();
 }
@@ -68,7 +75,7 @@ void Object::update_bounding_sphere()
 	vector<Vector3> points;
 	for(vector<LevelOfDetail>::const_iterator i=lods.begin(); i!=lods.end(); ++i)
 	{
-		if(!i->mesh)
+		if(!i->mesh || !i->mesh->is_loaded())
 			continue;
 
 		const VertexArray &vertices = i->mesh->get_vertices();
@@ -92,6 +99,11 @@ void Object::update_bounding_sphere()
 		}
 	}
 
+	/* Don't touch the bounding sphere if we had no vertices to avoid
+	overwriting a possible hint. */
+	if(points.empty())
+		return;
+
 	bounding_sphere = Geometry::BoundingSphere<float, 3>::from_point_cloud(points.begin(), points.end());
 }
 
@@ -180,6 +192,12 @@ void Object::resource_loaded(Resource &res)
 		update_bounding_sphere();
 }
 
+void Object::resource_removed(Resource &res)
+{
+	if(&res==lods.front().mesh.get())
+		lod0_watched = false;
+}
+
 
 Object::Loader::Loader(Object &o):
 	LodLoader(o, 0, 0)
@@ -195,6 +213,7 @@ Object::Loader::Loader(Object &o, Collection &c):
 
 void Object::Loader::init()
 {
+	add("bounding_sphere_hint", &Loader::bounding_sphere_hint);
 	add("level_of_detail", &Loader::level_of_detail);
 }
 
@@ -203,6 +222,11 @@ void Object::Loader::finish()
 	obj.update_bounding_sphere();
 }
 
+void Object::Loader::bounding_sphere_hint(float x, float y, float z, float r)
+{
+	obj.bounding_sphere = Geometry::BoundingSphere<float, 3>(Vector3(x, y, z), r);
+}
+
 void Object::Loader::level_of_detail(unsigned i)
 {
 	LodLoader ldr(obj, i, coll);