// Scene handling
private Task UpdateScene(MapDocument md, IEnumerable <IMapObject> affected)
{
var waitTask = Task.CompletedTask;
lock (_lock)
{
if (_sceneBuilder == null)
{
_sceneBuilder = new SceneBuilder(_engine.Value);
_engine.Value.Add(_sceneBuilder.SceneBuilderRenderable);
affected = null;
}
using (_engine.Value.Pause())
{
if (affected == null || md == null)
{
foreach (var r in _sceneBuilder.GetAllRenderables())
{
_engine.Value.Remove(r);
if (r is IUpdateable u)
{
_engine.Value.Remove(u);
}
}
_sceneBuilder.Clear();
}
if (md != null)
{
var resourceCollector = new ResourceCollector();
waitTask = _converter.Value.Convert(md, _sceneBuilder, affected, resourceCollector)
.ContinueWith(t => HandleResources(md.Environment, resourceCollector));
}
}
}
return(waitTask);
}
public SceneBuilderRenderable(SceneBuilder sceneBuilder)
{
_sceneBuilder = sceneBuilder;
}