public void SpanIteratorHasCorrectIntercepts()
{
var rectA = SKRectI.Create(10, 10, 100, 100);
var rectB = SKRectI.Create(50, 50, 100, 100);
using var region = new SKRegion(rectA);
region.Op(rectB, SKRegionOperation.Union);
using var iterator = region.CreateSpanIterator(30, 5, 200);
Assert.True(iterator.Next(out var left, out var right));
Assert.Equal(10, left);
Assert.Equal(110, right);
Assert.False(iterator.Next(out left, out right));
Assert.Equal(0, left);
Assert.Equal(0, right);
Assert.False(iterator.Next(out left, out right));
Assert.Equal(0, left);
Assert.Equal(0, right);
}
public void ClipIteratorHasCorrectRects()
{
var rectA = SKRectI.Create(10, 10, 100, 100);
var rectB = SKRectI.Create(50, 50, 100, 100);
using var region = new SKRegion(rectA);
region.Op(rectB, SKRegionOperation.Union);
using var iterator = region.CreateClipIterator(SKRectI.Create(5, 5, 65, 65));
Assert.True(iterator.Next(out var rect));
Assert.Equal(SKRectI.Create(10, 10, 100, 40), rect);
Assert.True(iterator.Next(out rect));
Assert.Equal(SKRectI.Create(10, 50, 140, 60), rect);
Assert.False(iterator.Next(out rect));
Assert.Equal(SKRect.Empty, rect);
Assert.False(iterator.Next(out rect));
Assert.Equal(SKRect.Empty, rect);
}