/// Returns the index of the specified top-level gltf object.
/// Raises KeyNotFoundException if the desired object is not found, or it has no index
/// (meaning that it is not marked to be exported).
private int LookupIndex(RefObj gltfObject)
{
RefObj obj = Lookup(gltfObject);
if (obj.Index == null)
{
throw new KeyNotFoundException("Index " + gltfObject.name);
}
return(obj.Index.Value);
}
/// Performs a LookupIndex() and formats the result as a gltf-style reference.
/// If gltf1, this is a string name.
/// If gltf2, this is a small integer index into the specified type's top-level object array.
/// Raises KeyNotFoundException if the desired object is not found.
public string SerializeReference(RefObj gltfObject)
{
// Always look it up, so we get good sanity checking even in gltf1 mode.
int id = LookupIndex(gltfObject);
m_emittedRefs.Add(gltfObject);
if (Gltf2)
{
return(id.ToString());
}
else
{
return($"\"{gltfObject.name}\"");
}
}
/// Returns the specified top-level gltf object.
/// This may seem like a silly no-op, but it performs some validation
/// to ensure Lookup(obj) === Lookup<T>(obj.name)
public RefObj Lookup(RefObj gltfObject)
{
if (!m_nameToObject.TryGetValue(gltfObject.name, out RefObj gltfObject2))
{
Debug.LogError($"Object {gltfObject.name} was not registered");
throw new KeyNotFoundException(gltfObject.name);
}
if (ReferenceEquals(gltfObject2, gltfObject))
{
return(gltfObject);
}
else
{
Debug.LogError($"Two objects are named {gltfObject.name}: {gltfObject} and {gltfObject2}");
throw new KeyNotFoundException(gltfObject.name);
}
}
