public int CompareTo(object obj)
{
if (obj is int)
{
return(BufferIndex.CompareTo((int)obj));
}
return(BufferIndex.CompareTo(((Mark)obj).BufferIndex));
}
/// <summary>
/// This is used by the transparency z-order sorting.
///
/// Therefore highest z-values (which are in the back) come
/// first as they need to be drawn before front ones.
/// </summary>
public int CompareTo(DrawCommand other)
{
if (other == null)
{
return(1);
}
if (Z == other.Z)
{
return(BufferIndex.CompareTo(other.BufferIndex));
}
// This is equal to the greater check.
return(other.Z.CompareTo(Z));
}
