public void TestCombineAllWithNegative()
{
string resourcePath = "Freedom35.ImageProcessing.Tests.Resources.clock.bmp";
// Load source image
using Image sourceImage = TestImage.FromResource(resourcePath);
Assert.IsNotNull(sourceImage);
using Image negativeCopy = ImageColor.ToNegative(sourceImage);
Assert.IsNotNull(negativeCopy);
Image[] imagesToCombine = new Image[]
{
sourceImage,
negativeCopy
};
Bitmap combinedImage = ImageCombine.All(imagesToCombine);
// Get bytes for images
byte[] combinedBytes = ImageBytes.FromImage(combinedImage);
// Just check first row of bytes has been combined
for (int i = 0; i < combinedImage.Width; i++)
{
Assert.AreEqual(byte.MaxValue, combinedBytes[i]);
}
int pixelDepth = 3;
int stride = 1056;
int width = 1053;
int height = combinedImage.Height;
int limit = combinedBytes.Length - 4;
// Compare combined bytes excluding stride padding
for (int y = 0; y < height; y++)
{
int offset = y * stride;
for (int x = 0; x < width; x += pixelDepth)
{
int i = offset + x;
if (i < limit)
{
Assert.AreEqual(byte.MaxValue, combinedBytes[i]);
}
else
{
break;
}
}
}
}
public void TestConvertToNegative()
{
byte[] imageBytes =
{
0x01,
0xf0,
0x3c
};
ImageColor.ToNegative(imageBytes);
Assert.AreEqual(0xfe, imageBytes[0]);
Assert.AreEqual(0x0f, imageBytes[1]);
Assert.AreEqual(0xc3, imageBytes[2]);
}
