private void UWPFlagView_SizeChanged(object sender, SizeChangedEventArgs e)
{
var starSize = ActualHeight / 10;
var radius = ActualHeight / 3;
var count = 12;
var anglesCount = 5;
foreach (var star in FlagHelper.GetStars(count, (float)radius, anglesCount, (float)starSize, new Xamarin.Forms.Point(ActualWidth / 2, ActualHeight / 2)))
{
var points = new PointCollection();
star.Select(x => new Windows.Foundation.Point(x.X, x.Y)).Apply(x => points.Add(x));
var polygon = new Polygon();
polygon.FillRule = FillRule.Nonzero;
polygon.Fill = new SolidColorBrush(Color.FromArgb(255, 247, 205, 70));
polygon.Points = points;
Children.Add(polygon);
}
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
var starSize = Bounds.Height / 10;
var radius = Bounds.Height / 3;
var count = 12;
var anglesCount = 5;
using (CGContext context = UIGraphics.GetCurrentContext())
{
UIColor.FromRGB(247, 205, 70).SetFill();
foreach (var star in FlagHelper.GetStars(count, (float)radius, anglesCount, (float)starSize, Center.ToPoint()))
{
var path = new CGPath();
path.AddLines(star.Select(x => x.ToPointF()).ToArray());
path.CloseSubpath();
context.AddPath(path);
}
context.FillPath();
}
}
public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
var starSize = Bounds.Height / 10;
var radius = Bounds.Height / 3;
var count = 12;
var anglesCount = 5;
using (CGContext context = NSGraphicsContext.CurrentContext.CGContext)
{
NSColor.FromRgb(247, 205, 70).SetFill();
foreach (var star in FlagHelper.GetStars(count, (float)radius, anglesCount, (float)starSize, new Xamarin.Forms.Point(Bounds.Width / 2, Bounds.Height / 2)))
{
var path = new CGPath();
path.AddLines(star.Select(x => x.ToPointF()).ToArray());
path.CloseSubpath();
context.AddPath(path);
}
context.FillPath();
}
}
protected override void DispatchDraw(Canvas canvas)
{
base.DispatchDraw(canvas);
paint.Color = new Color(17, 52, 147);
canvas.DrawRect(0, 0, Width, Height, paint);
var starSize = Height / 10;
var radius = Height / 3;
var count = 12;
var anglesCount = 5;
paint.Color = Color.Yellow;
foreach (var star in FlagHelper.GetStars(count, (float)radius, anglesCount, (float)starSize, new Xamarin.Forms.Point(Width / 2, Height / 2)))
{
var path = new Path();
var points = star.Select(point => (X: point.X, Y: point.Y)).ToList();
for (int i = 0; i < star.Count(); i++)
{
if (i == 0)
{
path.MoveTo((float)points[i].X, (float)points[i].Y);
}
else
{
path.LineTo((float)points[i].X, (float)points[i].Y);
}
}
path.Close();
canvas.DrawPath(path, paint);
}
}
