public void TestFromImage_DimensionsNotDivisibleByDefault(int width, int height)
{
var image = GraphicUtils.GetImageByDimensions(width, height);
var chips = Chip.FromImage(image).ToList();
var numWidth = width / SharedConstants.DefaultChipWidth + 1;
var numHeight = height / SharedConstants.DefaultChipHeight + 1;
for (var i = 0; i < numWidth; i++)
{
var subWidth = i + 1 < numWidth
? SharedConstants.DefaultChipWidth
: width % SharedConstants.DefaultChipWidth;
for (var j = 0; j < numHeight; j++)
{
var subHeight = j + 1 < numHeight
? SharedConstants.DefaultChipHeight
: height % SharedConstants.DefaultChipHeight;
var left = i * SharedConstants.DefaultChipWidth;
var top = j * SharedConstants.DefaultChipHeight;
var expectedRegion = new SKRectI(left, top, left + subWidth, top + subHeight);
var expectedPixels = GraphicUtils.GetPixelsByDimensions(subWidth, subHeight);
Assert.AreEqual(expectedRegion, chips[i * numHeight + j].Region);
Assert.AreEqual(expectedPixels, chips[i * numHeight + j].Pixels);
}
}
}
/// <summary>
/// Analyzes the specified <see cref="SKImage"/> using the specified chip-analyzer function.
/// </summary>
/// <param name="image">The specified <see cref="SKImage"/> to analyze.</param>
/// <param name="chipAnalyzer">The specified chip-analyzer function to analyze a single chip.</param>
/// <param name="ct">The external <see cref="CancellationToken"/>.</param>
/// <param name="progressUpdater">The specified function to update the progress bar on the analyzing page.</param>
/// <returns><see cref="CategoryManager"/>s that represent the results of the chips of the specified <see cref="SKImage"/>.</returns>
public static IEnumerable <CategoryManager> AnalyzeImage(SKImage image, Func <Chip, CategoryManager> chipAnalyzer,
CancellationToken ct, Action progressUpdater)
{
var chips = Chip.FromImage(image).ToList();
return(chips.AsParallel().WithCancellation(ct).Select(chip =>
{
var result = chipAnalyzer(chip);
progressUpdater();
return result;
}));
}
public void TestFromImage_DimensionsLessThanDefault(int width, int height)
{
var image = GraphicUtils.GetImageByDimensions(width, height);
var chips = Chip.FromImage(image).ToList();
Assert.AreEqual(1, chips.Count);
var expectedRegion = new SKRectI(0, 0, width, height);
var expectedPixels = GraphicUtils.GetPixelsByDimensions(width, height);
Assert.AreEqual(expectedRegion, chips[0].Region);
Assert.AreEqual(expectedPixels, chips[0].Pixels);
}
public void TestFromImage_DimensionsDivisibleByDefault(int widthMultiplier, int heightMultiplier)
{
var image = GraphicUtils.GetImageByDimensions(widthMultiplier * SharedConstants.DefaultChipWidth,
heightMultiplier * SharedConstants.DefaultChipHeight);
var chips = Chip.FromImage(image).ToList();
Assert.AreEqual(widthMultiplier * heightMultiplier, chips.Count);
for (var i = 0; i < widthMultiplier; i++)
{
for (var j = 0; j < heightMultiplier; j++)
{
var left = i * SharedConstants.DefaultChipWidth;
var top = j * SharedConstants.DefaultChipHeight;
var expectedRegion = new SKRectI(left, top, left + SharedConstants.DefaultChipWidth,
top + SharedConstants.DefaultChipHeight);
var expectedPixels = GraphicUtils.GetPixelsByDimensions(SharedConstants.DefaultChipWidth,
SharedConstants.DefaultChipHeight);
Assert.AreEqual(expectedRegion, chips[i * heightMultiplier + j].Region);
Assert.AreEqual(expectedPixels, chips[i * heightMultiplier + j].Pixels);
}
}
}