unsafe public static KernelMap <T> MakeBlurMap(uint size, double radius, uint colorChannels, bool alphaChannel)
{
double[] blurkernel = new MathUtil.GaussianFactory(radius).MakeKernel();
int blurdist = Math.Min(blurkernel.Length, (int)size);
int channels = (int)colorChannels + (alphaChannel ? 1 : 0);
var map = new KernelMap <T>((int)size, (int)size, blurdist, channels);
fixed(byte *mstart = map.Map.Array)
fixed(double *kstart = blurkernel)
{
int * mp = (int *)mstart;
double *kp = kstart;
for (int i = 0; i < size; i++)
{
int start = i - blurdist / 2;
*mp++ = start;
for (int j = 0; j < blurdist; j++)
{
T w = convertWeight(kp[j]);
for (int k = 0; k < channels; k++)
{
Unsafe.Write(mp++, w);
}
}
}
}
return(map.clamp());
}
unsafe public static KernelMap MakeBlurMap(uint size, double radius)
{
int[] blurkernel = new MathUtil.GaussianFactory(radius).MakeKernel().Select(f => MathUtil.ScaleToInt32(f)).ToArray();
int blurdist = blurkernel.Length;
var map = new KernelMap((int)size, (int)size, blurdist);
fixed(int *mstart = map.Map, kstart = blurkernel)
{
int *mp = mstart, kp = kstart;
for (int i = 0; i < size; i++)
{
int end = i + blurdist / 2;
int start = end - blurdist + 1;
*mp++ = start;
for (int j = 0; j < blurdist; j++)
{
*mp++ = kp[j];
}
}
}
return(map.clamp());
}