private static void EndAngle_PropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
CircleSettingGraphic control = (CircleSettingGraphic)o;
var v = control.GetPointByRotation(new Point(control.Radius, 0), (double)e.NewValue * Math.PI / 180, new Point()) - new Point(-control.Radius, -control.Radius);
control.EndPoint = new Point(v.X, v.Y);
control.UpdateCircle();
}
private static void Radius_PropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
CircleSettingGraphic control = (CircleSettingGraphic)o;
var radius = (double)e.NewValue;
if (control.Diameter != radius * 2)
{
control.Diameter = radius * 2;
}
var startV = control.GetPointByRotation(new Point(radius, 0), control.StartAngle * Math.PI / 180, new Point()) - new Point(-radius, -radius);
var endV = control.GetPointByRotation(new Point(radius, 0), control.EndAngle * Math.PI / 180, new Point()) - new Point(-radius, -radius);
control.StartPoint = new Point(startV.X, startV.Y);
control.EndPoint = new Point(endV.X, endV.Y);
control.UpdateCircle();
}