aacircleColor function
Implementation
int aacircleColor(
Pointer<SdlRenderer> renderer, int x, int y, int rad, int color) {
var co = Uint32List.fromList([color]).buffer.asUint8List();
return aaellipseRgba(renderer, x, y, rad, rad, co[0], co[1], co[2], co[3]);
}