public void TestHashCodes()
{
var gray = new MemoryBitmap <Byte>(256, 256, Pixel.Luminance8.Format);
Assert.AreEqual(256, gray.Info.StepByteSize);
var grayWithStride = new MemoryBitmap <Byte>(256, 256, Pixel.Luminance8.Format, 320);
Assert.AreEqual(320, grayWithStride.Info.StepByteSize);
var rnd = new Random(117);
for (int i = 0; i < 256 * 256; ++i)
{
gray.SetPixel(i & 255, i / 256, (Byte)rnd.Next());
}
grayWithStride.SetPixels(0, 0, gray);
Assert.AreEqual(gray.GetHashCode(), grayWithStride.GetHashCode());
var span = gray.AsSpanBitmap();
var less = span.AsTypeless();
var hash = gray.GetHashCode();
Assert.AreEqual(1953103375, hash);
Assert.AreEqual(hash, gray.AsTypeless().GetHashCode());
Assert.AreEqual(hash, span.GetHashCode());
Assert.AreEqual(hash, less.GetHashCode());
}
public void CopyPixelsWithStride()
{
var m1 = new MemoryBitmap <UInt32>(16, 16, Pixel.BGRA32.Format);
m1.SetPixel(0, 0, 0xff00ff00);
m1.SetPixel(0, 1, 0xffff00ff);
var m2 = new MemoryBitmap <UInt32>(16, 16, Pixel.BGRA32.Format, 17 * 4);
m2.SetPixels(0, 0, m1);
m2.Save(new AttachmentInfo("result.png"));
Assert.AreEqual(0xff00ff00, m2.GetPixel(0, 0));
Assert.AreEqual(0xffff00ff, m2.GetPixel(0, 1));
}
public void TestReinterpretBitmaps()
{
var src = new MemoryBitmap<Pixel.BGRA32>(16, 16);
src.SetPixel(0, 0, (255, 0, 0, 255));
var dst = src.AsSpanBitmap().ReinterpretAs<Pixel.RGBA32>();
var p = dst.GetPixel(0, 0);
Assert.AreEqual(0, p.R);
Assert.AreEqual(0, p.G);
Assert.AreEqual(255, p.B); // formerly R
Assert.AreEqual(255, p.A);
// float RGB to Vector3
var bgr = new MemoryBitmap<Pixel.BGR96F>(16, 16);
var xyz = bgr.AsSpanBitmap().ReinterpretAs<System.Numerics.Vector3>();
}