public static bool operator ==( Line line1, Line line2 )
{
if ( System.Object.ReferenceEquals( line1, line2 ) )
{
return true;
}
if ( ( (object) line1 == null ) || ( (object) line2 == null ) )
{
return false;
}
return ( ( line1.k == line2.k ) && ( line1.b == line2.b ) );
}