public static Shape2 Mirror(this Shape2 shape, Vector2 center)
{
return(shape.Transform(p => p - 2 * (p - center)));
}
public static Shape2 Move(this Shape2 shape, Vector2 move)
{
return(shape.Transform(p => p + move));
}
public static Shape2 Mirror(this Shape2 shape, Line2 line)
{
var n = line.Normal;
return(shape.Transform(p => p - 2 * line.Fn(p) * n / line.Normal.Len2).Reverse());
}
public static Shape2 Rotate(this Shape2 shape, Vector2 center, double angle)
{
var m = Rotates2.Rotate(angle);
return(shape.Transform(p => center + m * (p - center)));
}
public static Shape2 Rotate(this Shape2 shape, double angle)
{
var m = Rotates2.Rotate(angle);
return(shape.Transform(p => m * p));
}
public static Shape2 Mult(this Shape2 shape, double k)
{
return(shape.Transform(p => p * k));
}
public static Shape2 Scale(this Shape2 shape, Vector2 aSize, Vector2 bSize)
{
return(shape.Transform(p => p.Scale(aSize, bSize)));
}