CssScale constructor
Implementation
factory CssScale(num x, num y, [num? z]) {
if ((y is num) && (x is num) && z == null) {
return CssScale._create_1(x, y);
}
if ((z is num) && (y is num) && (x is num)) {
return CssScale._create_2(x, y, z);
}
throw new ArgumentError("Incorrect number or type of arguments");
}