switch ( ip->_transition ) {
case Trans_IN: isOut = true; break;
case Trans_OUT: isOut = false; break;
- case Trans_TANGENT: isOut = ( prevID == 0 ); break;
+ case Trans_TANGENT: isOut = ( prevID != 0 ); break;
case Trans_APEX:
{
// singularity point (apex of a cone)