/// <summary>
/// Resizes the MultiDimension keeping values on the common 'surface'.
/// Note that you can change any dimension index, but you cannot change the number of dimensions.
/// </summary>
public void Resize(params int[] newDimensions)
{
var olddimens = this.Dimensions;
var oldvalues = this.values;
if (this.Dimensions.Count == newDimensions.Length)
{
var aNotLastHasChanged = false;
for (int i = 0; i < newDimensions.Length - 1; i++)
{
if (this.Dimensions[i] != newDimensions[i])
{
aNotLastHasChanged = true;
break;
}
}
if (aNotLastHasChanged)
{
// Not only the last index has changed; any index can have changed:
// Create a target instance as helper:
var target = new MultiDimensional <TElement>(newDimensions);
// Datermine common surface:
var commonSurface = new int[newDimensions.Length];
for (int i = 0; i < newDimensions.Length; i++)
{
commonSurface[i] = Math.Min(olddimens[i], newDimensions[i]);
}
// Copy common surface values:
foreach (var index in MultiCounter.Enumerate(commonSurface))
{
target[index] = this[index];
}
// Substitute current instance by target:
this.Dimensions = newDimensions.ToList().AsReadOnly();
this.flatteningFactors = target.flatteningFactors;
this.values = target.values;
}
else if (this.Dimensions[newDimensions.Length - 1] != newDimensions[newDimensions.Length - 1])
{
// Only the last index changed.
this.Initialize(newDimensions);
Array.Copy(oldvalues, this.values, Math.Min(oldvalues.Length, this.values.Length));
}
else
{
// All dimensions (last AND notlasts) are equal, nothing to do...
}
}
else
{
// The number of dimensions has changed:
throw new NotSupportedException("Cannot resize a MultiDimensional to a different number of dimensions.");
}
}
public MultiCounter Reversed()
{
var reversedAmplitudes = Amplitudes.Reverse().ToArray();
var reversedMultiCounter = new MultiCounter(reversedAmplitudes, this.RollingOver);
reversedMultiCounter.values = this.values.Reverse().ToArray();
return(reversedMultiCounter);
}
