public void TestSetRowArgbArray()
{
using (var bitmap = SurfaceExtensionsTest.LoadResource("style.png"))
{
var line = new Rectangle(13, 27, 64, 1);
var data = bitmap.LockBits(line, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
var expected = new byte[line.Width * 4];
_ = data.GetRowArgb(expected, 0, 0);
bitmap.UnlockBits(data);
var tensor = new DenseTensor <float>(new Rectangle(Point.Empty, bitmap.Size).ToNHWC());
tensor.SetRowArgb(expected, line.X, line.Y);
var actual = new byte[expected.Length];
_ = tensor.GetRowArgb(actual, line.X, line.Y);
CollectionAssert.AreEqual(expected, actual);
}
}
public void TestSetRowArgbArraySegment()
{
using (var bitmap = SurfaceExtensionsTest.LoadResource("style.png"))
{
var line = new Rectangle(13, 27, 64, 1);
var data = bitmap.LockBits(line, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
var expected = new byte[data.Stride + 32];
var memory = new ArraySegment <byte>(expected, 8, line.Width * 4);
_ = data.GetRowArgb(memory, 0, 0);
bitmap.UnlockBits(data);
var tensor = new DenseTensor <float>(new Rectangle(Point.Empty, bitmap.Size).ToNHWC());
tensor.SetRowArgb(memory, line.X, line.Y);
var actual = new byte[memory.Count];
_ = tensor.GetRowArgb(actual, line.X, line.Y);
CollectionAssert.AreEqual(expected.Skip(memory.Offset).Take(memory.Count).ToArray(), actual);
}
}
public void TestToTensor()
{
using (var bitmap = SurfaceExtensionsTest.LoadResource("style.png"))
using (var surf = new Surface(bitmap.Width, bitmap.Height, SurfaceCreationFlags.Default))
{
surf.CopyFromGdipBitmap(bitmap);
using (var copy = surf.Clone())
{
// round-trip: surface->tensor->surface
surf.ToTensor().ToSurface(copy);
var(cols, rows) = (surf.Width, surf.Height);
// compare pixel by pixel
for (int y = 0; y < rows; ++y)
{
for (int x = 0; x < cols; ++x)
{
Assert.AreEqual(surf[x, y], copy[x, y]);
}
}
}
}
}
