/// <summary>
/// Build and return a signature block representing this element block.
/// </summary>
/// <remarks>
/// This is primarily intended for use on blocks of element lines to reduce
/// them to blocks of element signatures and thereby increase performance
/// when comparing blocks of lines from a text file for instance.
/// </remarks>
/// <returns></returns>
public Block Signature()
{
long nLength = this.Length;
Block oBlock = new Block(nLength);
for (long nIndex = 0; nIndex < nLength; nIndex++)
{
Signature oSignature = maElements[nIndex].Signature();
ElementSignature oElementSignature = new ElementSignature(oSignature);
oBlock.Elements[nIndex] = oElementSignature;
}
return(oBlock);
}
/// <summary>
/// Check if both elements are equal.
/// </summary>
/// <param name="poElement1">Left hand side operand element to compare.</param>
/// <param name="poElement2">Right hand side operand element to compare.</param>
/// <returns>True if equal, false otherwise.</returns>
private static bool AreEqual(ElementSignature poElement1, ElementSignature poElement2)
{
Signature oSignature1 = (Signature)poElement1.Contents;
Signature oSignature2 = (Signature)poElement2.Contents;
bool bEqual = false;
if (oSignature1.Length == oSignature2.Length)
{
if (oSignature1.Area == oSignature2.Area)
{
if (oSignature1.CentreOfMass == oSignature2.CentreOfMass)
{
bEqual = true;
}
}
}
return(bEqual);
}