minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );