/// <summary>
/// Replaces all cell values of the receiver with the values of another matrix.
/// Both matrices must have the same number of Slices, Rows and Columns.
/// If both matrices share the same cells (as is the case if they are views derived from the same matrix) and intersect in an ambiguous way, then replaces <i>as if</i> using an intermediate auxiliary deep copy of <i>other</i>.
/// </summary>
/// <param name="source">the source matrix to copy from (may be identical to the receiver).</param>
/// <returns><i>this</i> (for convenience only).</returns>
/// <exception cref="ArgumentException">if <i>Slices != source.Slices || Rows != source.Rows || Columns != source.Columns</i></exception>
public override ObjectMatrix3D Assign(ObjectMatrix3D source)
{
// overriden for performance only
if (!(source is DenseObjectMatrix3D))
{
return(base.Assign(source));
}
DenseObjectMatrix3D other = (DenseObjectMatrix3D)source;
if (other == this)
{
return(this);
}
CheckShape(other);
if (HaveSharedCells(other))
{
ObjectMatrix3D c = other.Copy();
if (!(c is DenseObjectMatrix3D))
{ // should not happen
return(base.Assign(source));
}
other = (DenseObjectMatrix3D)c;
}
if (!this.IsView && !other.IsView)
{ // quickest
Array.Copy(other.Elements, 0, this.Elements, 0, this.Elements.Length);
return(this);
}
return(base.Assign(other));
}
/// <summary>
/// Returns <i>true</i> if both matrices share common cells.
/// More formally, returns <i>true</i> if <i>other != null</i> and at least one of the following conditions is met
/// <ul>
/// <li>the receiver is a view of the other matrix
/// <li>the other matrix is a view of the receiver
/// <li><i>this == other</i>
/// </ul>
/// </summary>
protected new Boolean HaveSharedCellsRaw(ObjectMatrix3D other)
{
if (other is SelectedDenseObjectMatrix3D)
{
SelectedDenseObjectMatrix3D otherMatrix = (SelectedDenseObjectMatrix3D)other;
return(this.Elements == otherMatrix.Elements);
}
else if (other is DenseObjectMatrix3D)
{
DenseObjectMatrix3D otherMatrix = (DenseObjectMatrix3D)other;
return(this.Elements == otherMatrix.Elements);
}
return(false);
}
