lineXOR method
Implementation
bool lineXOR( int x1, int y1, int x2, int y2 ){
ParamInteger xx1 = ParamInteger( x1 );
ParamInteger yy1 = ParamInteger( y1 );
ParamInteger xx2 = ParamInteger( x2 );
ParamInteger yy2 = ParamInteger( y2 );
if( clipLine( xx1, yy1, xx2, yy2 ) == 0 ){
return false;
}
drawLineXOR( xx1.val(), yy1.val(), xx2.val(), yy2.val() );
moveTo( x2, y2 );
return true;
}