Flutter: vector3 to rgba int color

main.dart

/// Takes a unit Vector3 (all values from 0 to 1) 
/// and returns an int representing color in RGBA format
/// Vector3(0, 1, 0) -> 0xff00ff00
int toColorInt(Vector3 vec) {
  int r = (vec.r * 255).toInt();
  int g = (vec.g * 255).toInt();
  int b = (vec.b * 255).toInt();

  return (b << 0) | (g << 8) | (r << 16) | (255 << 32);
}