| 31 | // Update this with w2 if w2 nearer to pt. |
| 32 | template<class TrackingData> |
| 33 | inline bool Foam::pointEdgePoint::update |
| 34 | ( |
| 35 | const point& pt, |
| 36 | const pointEdgePoint& w2, |
| 37 | const scalar tol, |
| 38 | TrackingData& td |
| 39 | ) |
| 40 | { |
| 41 | scalar dist2 = magSqr(pt - w2.origin()); |
| 42 | |
| 43 | if (!valid(td)) |
| 44 | { |
| 45 | // current not yet set so use any value |
| 46 | distSqr_ = dist2; |
| 47 | origin_ = w2.origin(); |
| 48 | |
| 49 | return true; |
| 50 | } |
| 51 | |
| 52 | scalar diff = distSqr_ - dist2; |
| 53 | |
| 54 | if (diff < 0) |
| 55 | { |
| 56 | // already nearer to pt |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | if ((diff < SMALL) || ((distSqr_ > SMALL) && (diff/distSqr_ < tol))) |
| 61 | { |
| 62 | // don't propagate small changes |
| 63 | return false; |
| 64 | } |
| 65 | else |
| 66 | { |
| 67 | // update with new values |
| 68 | distSqr_ = dist2; |
| 69 | origin_ = w2.origin(); |
| 70 | |
| 71 | return true; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | |
| 76 | // Update this with w2 (information on same point) |