/// <summary>
/// Implements convolution over a plain rectangular array of data values
/// </summary>
/// <param name="source"></param>
/// <param name="dest"></param>
/// <param name="convolver"></param>
public override void Convolve(T[,] source, T[,] dest, IConvolver <T> convolver)
{
var majorDimSource = source.GetLength(0);
var minorDimSource = source.GetLength(1);
var majorDimDest = dest.GetLength(0);
var minorDimDest = dest.GetLength(1);
var nullValue = convolver.Accumulator.NullValue;
if (majorDimSource != majorDimDest || minorDimSource != minorDimDest)
{
throw new ArgumentException("Dimensions of source and destination data are not the same");
}
convolver.Convolve(majorDimSource, minorDimSource,
(x, y) =>
{
if (x < 0 || y < 0 || x >= majorDimSource || y >= minorDimSource)
{
return(nullValue);
}
return(source[x, y]);
},
(x, y, v) => dest[x, y] = v);
}
/// <summary>
/// Implements convolution over a sub grid tree in <T>
/// </summary>
/// <param name="leaf"></param>
/// <param name="smoothedLeaf"></param>
/// <param name="convolver"></param>
public override void Convolve(GenericLeafSubGrid <T> leaf, GenericLeafSubGrid <T> smoothedLeaf, IConvolver <T> convolver)
{
var context = new ConvolutionSubGridContext <GenericLeafSubGrid <T>, T>(leaf, convolver.Accumulator.NullValue);
convolver.Convolve(SubGridTreeConsts.SubGridTreeDimension, SubGridTreeConsts.SubGridTreeDimension,
(x, y) => context.Value(x, y), (x, y, v) => smoothedLeaf.Items[x, y] = v);
}