public ThumbnailTracer(List<MeshGroup> meshGroups, int width, int height) { size = new Point2D(width, height); trackballTumbleWidget = new TrackballTumbleWidget(); trackballTumbleWidget.DoOpenGlDrawing = false; trackballTumbleWidget.LocalBounds = new RectangleDouble(0, 0, width, height); loadedMeshGroups = meshGroups; SetRenderPosition(loadedMeshGroups); trackballTumbleWidget.AnchorCenter(); }