public void AddStop()
{
var stop = new GradientStop
{
Color = ColorUtils.GetRandom(),
Offset = Offset.Prop(1)
};
var lastStop = Stops.LastOrDefault();
if (lastStop != null && lastStop.RenderOffset > 0.8)
{
foreach (var x in Stops)
{
x.Offset = Offset.Prop(x.RenderOffset * 0.8);
}
}
_source.Stops.Add(stop);
Stops.Add(new GradientStopClone(stop));
}