RadialGradientBrush CreateRadialGradientBrush(XElement e)
{
var b = new RadialGradientBrush ();
b.Center.X = ReadNumber (e.Attribute ("cx"));
b.Center.Y = ReadNumber (e.Attribute ("cy"));
b.Focus.X = ReadNumber (e.Attribute ("fx"));
b.Focus.Y = ReadNumber (e.Attribute ("fy"));
var r = ReadNumber (e.Attribute ("r"));
b.Radius = new Size (r);
ReadStops (e, b.Stops);
return b;
}
RadialGradientBrush CreateRadialGradientBrush (XElement e)
{
var b = new RadialGradientBrush ();
b.Center.X = ReadNumber (e.Attribute ("cx"));
b.Center.Y = ReadNumber (e.Attribute ("cy"));
if (e.Attribute ("fx") != null)
b.Focus.X = ReadNumber (e.Attribute ("fx"));
else
b.Focus.X = b.Center.X;
if (e.Attribute ("fy") != null)
b.Focus.Y = ReadNumber (e.Attribute ("fy"));
else
b.Focus.Y = b.Center.Y;
var r = ReadNumber (e.Attribute ("r"));
b.Radius = new Size (r);
var gradientUnits = e.Attribute("gradientUnits");
if (gradientUnits != null)
{
b.Absolute = gradientUnits.Value == "userSpaceOnUse";
}
// TODO: check gradientTransform attribute
ReadStops (e, b.Stops);
return b;
}
public async Task TriWithRadGrad ()
{
var canvas = Platform.CreateImageCanvas (new Size (100), transparency: true);
var size = new Size (100);
var b = new RadialGradientBrush (
new Point (0.5, 1), new Size (1),
Colors.Yellow, Colors.Blue);
var p = new Path ();
p.MoveTo (0, 0);
p.LineTo (size.Width, 0);
p.LineTo (size.Width / 2, size.Height);
p.Close ();
p.Brush = b;
p.Draw (canvas);
await SaveImage (canvas, "ImageCanvas.TriWithRadGrad");
}