public void TestCopyWritableBitmap()
{
var src256 = new MemoryBitmap <Byte>(256, 256, Pixel.Luminance8.Format)
.AsSpanBitmap()
.WithWPF();
var src512 = new MemoryBitmap <Byte>(512, 512, Pixel.Luminance8.Format)
.AsSpanBitmap()
.WithWPF();
WriteableBitmap dst = null;
bool allPixelsEqualTo(WriteableBitmap bmp, Byte pix)
{
return(bmp.ToMemoryBitmap()
.OfType <Byte>()
.EnumeratePixels()
.All(item => item.Pixel == pix));
}
src256.Source.SetPixels <Byte>(100);
src256.CopyTo(ref dst);
Assert.NotNull(dst);
Assert.AreEqual(typeof(WriteableBitmap), dst.GetType());
Assert.AreEqual(256, dst.PixelWidth);
Assert.AreEqual(256, dst.PixelHeight);
Assert.IsTrue(allPixelsEqualTo(dst, 100));
src256.Source.SetPixels <Byte>(105);
src256.CopyTo(ref dst);
Assert.IsTrue(allPixelsEqualTo(dst, 105));
src512.Source.SetPixels <Byte>(130);
src512.CopyTo(ref dst);
Assert.NotNull(dst);
Assert.AreEqual(typeof(WriteableBitmap), dst.GetType());
Assert.AreEqual(512, dst.PixelWidth);
Assert.AreEqual(512, dst.PixelHeight);
Assert.IsTrue(allPixelsEqualTo(dst, 130));
src512.Source.SetPixels <Byte>(135);
src512.CopyTo(ref dst);
Assert.IsTrue(allPixelsEqualTo(dst, 135));
}
