protected virtual void OnAngleChanged(double Value)
{
if (!AngleChangeHandled)
{
var Angle = Value;
var x = Angle * (1d / 180d) * Math.PI;
var y = new Point(Math.Cos(x), Math.Sin(x));
switch (GradientType)
{
case GradientType.Linear:
var Linear = Gradient.As <LinearGradientBrush>();
switch (GradientPosition)
{
case GradientPosition.End:
Linear.EndPoint = y;
break;
case GradientPosition.Start:
Linear.StartPoint = y;
break;
}
break;
case GradientType.Radial:
var Radial = Gradient.As <RadialGradientBrush>();
switch (GradientPosition)
{
case GradientPosition.End:
Radial.Center = y;
break;
case GradientPosition.Start:
Radial.GradientOrigin = y;
break;
}
break;
}
}
OnGradientChanged(new EventArgs <Brush>(Gradient));
}
protected virtual void OnGradientPositionChanged(GradientPosition Value)
{
var Point = default(Point);
switch (GradientType)
{
case GradientType.Linear:
switch (Value)
{
case GradientPosition.End:
Point = Gradient.As <LinearGradientBrush>().EndPoint;
break;
case GradientPosition.Start:
Point = Gradient.As <LinearGradientBrush>().StartPoint;
break;
}
break;
case GradientType.Radial:
switch (Value)
{
case GradientPosition.End:
Point = Gradient.As <RadialGradientBrush>().Center;
break;
case GradientPosition.Start:
Point = Gradient.As <RadialGradientBrush>().GradientOrigin;
break;
}
break;
}
AngleChangeHandled = true;
var x = Math.Acos(Point.X);
Angle = x / Math.PI / (1d / 180d);
AngleChangeHandled = false;
OnGradientChanged(new EventArgs <Brush>(Gradient));
}