| 34 | template<class Type> |
| 35 | template<class TrackingData> |
| 36 | inline bool wallPointData<Type>::update |
| 37 | ( |
| 38 | const point& pt, |
| 39 | const wallPointData<Type>& w2, |
| 40 | const scalar tol, |
| 41 | TrackingData& td |
| 42 | ) |
| 43 | { |
| 44 | scalar dist2 = magSqr(pt - w2.origin()); |
| 45 | |
| 46 | if (valid(td)) |
| 47 | { |
| 48 | scalar diff = distSqr() - dist2; |
| 49 | |
| 50 | if (diff < 0) |
| 51 | { |
| 52 | // already nearer to pt |
| 53 | return false; |
| 54 | } |
| 55 | |
| 56 | if ((diff < SMALL) || ((distSqr() > SMALL) && (diff/distSqr() < tol))) |
| 57 | { |
| 58 | // don't propagate small changes |
| 59 | return false; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | // Either *this is not yet valid or w2 is closer |
| 64 | { |
| 65 | // current not yet set so use any value |
| 66 | distSqr() = dist2; |
| 67 | origin() = w2.origin(); |
| 68 | data_ = w2.data(); |
| 69 | |
| 70 | return true; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | |
| 75 | // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // |