toImage method
Creates a raster image representation of the current state of the scene. This is a slow operation that is performed on a background thread.
Implementation
Future<Image/*!*/>/*!*/ toImage(int/*!*/ width, int/*!*/ height) {
if (width <= 0 || height <= 0) {
throw Exception('Invalid image dimensions.');
}
return _futurize((_Callback<Image> callback) => _toImage(width, height, callback));
}