IEnumerable <int[]> OffsetGenerator()
{
var offset = KernelShape.Select(x => 0).ToArray();
bool goodToGo = false;
do
{
yield return(offset);
goodToGo = false;
for (int i = 0; i < KernelShape.Length; i++)
{
offset[i]++;
if (offset[i] < KernelShape[i])
{
goodToGo = true; break;
}
offset[i] = 0;
}
} while (goodToGo);
}
IEnumerable <int[]> CornerGenerator()
{
int[] min = KernelShape.Select((v, i) => - Lowerpadding[i] - ((Padding[i]) ? -(v / 2) : 0)).ToArray();
int[] max = KernelShape.Select((v, i) => InputShape[i] + Upperpadding[i] - ((Padding[i]) ? ((v + 1) / 2) : v)).ToArray();
var offset = min.Select(i => i).ToArray(); // deep copy
bool goodToGo = false;
do
{
yield return(offset);
goodToGo = false;
for (int i = KernelShape.Length - 1; i >= 0; i--)
{
offset[i] += Stride[i];
if (offset[i] <= max[i])
{
goodToGo = true; break;
}
offset[i] = min[i];
}
} while (goodToGo);
}