public void TrimPathEffectWorks()
{
using (var bitmap = new SKBitmap(new SKImageInfo(100, 100)))
using (var canvas = new SKCanvas(bitmap))
using (var path = new SKPath())
{
path.MoveTo(0, 50);
path.LineTo(new SKPoint(100, 50));
canvas.Clear(SKColors.White);
// draw the base path
using (var paint = new SKPaint())
{
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 20;
paint.Color = SKColors.Black;
canvas.DrawPath(path, paint);
}
// should be black
Assert.Equal(SKColors.Black, bitmap.GetPixel(10, 50));
Assert.Equal(SKColors.Black, bitmap.GetPixel(50, 50));
Assert.Equal(SKColors.Black, bitmap.GetPixel(90, 50));
// draw the path with an effect
using (var paint = new SKPaint())
{
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 20;
paint.Color = SKColors.Red;
// attach the effect
paint.PathEffect = SKPathEffect.CreateTrim(0.3f, 0.7f);
canvas.DrawPath(path, paint);
}
// should be red
Assert.Equal(SKColors.Black, bitmap.GetPixel(10, 50));
Assert.Equal(SKColors.Red, bitmap.GetPixel(50, 50));
Assert.Equal(SKColors.Black, bitmap.GetPixel(90, 50));
}
}