public static void Draw(this RadialGradient target, CGContext ctx, CGRect bounds)
{
target.Update();
CGRect clippingBounds = bounds;
if (!target.Frame.IsEmpty)
{
bounds = new CGRect(target.Frame.X, target.Frame.Y, target.Frame.Width, target.Frame.Height);
}
var gradColors = GenerateGradientColors(target.Colors);
var colorSpace = CGColorSpace.CreateDeviceRGB();
var grad = new CGGradient(colorSpace, gradColors, ConvertToNativeArray(target.Locations));
var gradCenter = new CGPoint((bounds.Width * target.Center.X), (bounds.Height * target.Center.Y));
var gradRadius = (nfloat)Math.Min(bounds.Size.Width / 2, bounds.Size.Height / 2);
var drawingFlags = GetGradientFlags(target);
var scaleT = CGAffineTransform.MakeScale(target.Scale.X, target.Scale.Y);
ctx.SaveState();
if (!target.Frame.IsEmpty)
{
ctx.ClipToRect(new CGRect(bounds.X + clippingBounds.X, bounds.Y + clippingBounds.Y, clippingBounds.Width, clippingBounds.Height));
}
ctx.TranslateCTM(bounds.X + gradCenter.X, bounds.Y + gradCenter.Y);
ctx.ScaleCTM(scaleT.xx, scaleT.yy);
ctx.DrawRadialGradient(grad, CGPoint.Empty, 0, CGPoint.Empty, gradRadius, drawingFlags);
ctx.RestoreState();
grad.Dispose();
colorSpace.Dispose();
}
public static Shader Draw(this RadialGradient target, PointF position, float radius)
{
target.Update();
var grad = new Android.Graphics.RadialGradient(
position.X, position.Y, radius,
target.Colors.ToInt(),
target.Locations,
Shader.TileMode.Clamp
);
return(grad);
}