private static string PrintKernelMap <TKernelMap>(
TKernelMap kernelMap,
Func <TKernelMap, int> getDestinationSize,
Func <TKernelMap, int, ReferenceKernel> getKernel)
{
var bld = new StringBuilder();
if (kernelMap is ResizeKernelMap actualMap)
{
bld.AppendLine(actualMap.Info);
}
int destinationSize = getDestinationSize(kernelMap);
for (int i = 0; i < destinationSize; i++)
{
ReferenceKernel kernel = getKernel(kernelMap, i);
bld.Append($"[{i:D3}] (L{kernel.Left:D3}) || ");
Span <float> span = kernel.Values;
for (int j = 0; j < kernel.Length; j++)
{
float value = span[j];
bld.Append($"{value,8:F5}");
bld.Append(" | ");
}
bld.AppendLine();
}
return(bld.ToString());
}
private void VerifyKernelMapContentIsCorrect(string resamplerName, int srcSize, int destSize)
{
IResampler resampler = TestUtils.GetResampler(resamplerName);
var referenceMap = ReferenceKernelMap.Calculate(resampler, destSize, srcSize);
var kernelMap = ResizeKernelMap.Calculate(resampler, destSize, srcSize, Configuration.Default.MemoryAllocator);
#if DEBUG
this.Output.WriteLine(kernelMap.Info);
this.Output.WriteLine($"Expected KernelMap:\n{PrintKernelMap(referenceMap)}\n");
this.Output.WriteLine($"Actual KernelMap:\n{PrintKernelMap(kernelMap)}\n");
#endif
var comparer = new ApproximateFloatComparer(1e-6f);
for (int i = 0; i < kernelMap.DestinationLength; i++)
{
ResizeKernel kernel = kernelMap.GetKernel(i);
ReferenceKernel referenceKernel = referenceMap.GetKernel(i);
Assert.True(
referenceKernel.Length == kernel.Length,
$"referenceKernel.Length != kernel.Length: {referenceKernel.Length} != {kernel.Length}");
Assert.True(
referenceKernel.Left == kernel.StartIndex,
$"referenceKernel.Left != kernel.Left: {referenceKernel.Left} != {kernel.StartIndex}");
float[] expectedValues = referenceKernel.Values;
Span <float> actualValues = kernel.Values;
Assert.Equal(expectedValues.Length, actualValues.Length);
for (int x = 0; x < expectedValues.Length; x++)
{
Assert.True(
comparer.Equals(expectedValues[x], actualValues[x]),
$"{expectedValues[x]} != {actualValues[x]} @ (Row:{i}, Col:{x})");
}
}
}
