| private RadiusInDirection ( System.Windows.Vector directionFromCenter ) : double | ||
| directionFromCenter | System.Windows.Vector | |
| return | double | |
internal double RadiusInDirection(Vector directionFromCenter)
{
var angle = Math.Atan2(directionFromCenter.Y, directionFromCenter.X);
var cos = Math.Cos(angle);
var sin = Math.Sin(angle);
var a = this.RadiusX;
var b = this.RadiusY;
var r2 = 1 / (cos * cos / (a * a) + sin * sin / (b * b));
return Math.Sqrt(r2);
}