drawPoint method
Implementation
@override
void drawPoint(Vector2 argPoint, double argRadiusOnScreen, Color3i argColor) {
var paint = Paint()
..color = Color.fromARGB(255, argColor.r, argColor.g, argColor.b)
..style = PaintingStyle.fill;
canvas.drawCircle(Offset(argPoint.x, argPoint.y), argRadiusOnScreen, paint);
}