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1 | // File: SelectMgr_SortCriterion.cxx |
| 2 | // Created: Thu Mar 26 17:32:47 1998 |
| 3 | // Author: Robert COUBLANC |
| 4 | // <rob@robox.paris1.matra-dtv.fr> |
| 5 | |
| 6 | |
| 7 | #include <SelectMgr_SortCriterion.ixx> |
| 8 | #include <Precision.hxx> |
| 9 | |
| 10 | //======================================================================= |
| 11 | //function : SelectMgr_SortCriterion |
| 12 | //purpose : Empty constructor |
| 13 | //======================================================================= |
| 14 | |
| 15 | SelectMgr_SortCriterion::SelectMgr_SortCriterion() |
| 16 | : myPrior (0), |
| 17 | myDepth (0.0), |
| 18 | myDist (0.0), |
| 19 | myTol (0.0), |
| 20 | myPreferClosest(Standard_True) |
| 21 | {} |
| 22 | |
| 23 | //======================================================================= |
| 24 | //function : SelectMgr_SortCriterion |
| 25 | //purpose : Constructor |
| 26 | //======================================================================= |
| 27 | |
| 28 | SelectMgr_SortCriterion::SelectMgr_SortCriterion(const Standard_Integer Prior, |
| 29 | const Standard_Real Depth, |
| 30 | const Standard_Real Dist, |
| 31 | const Standard_Real Tol, |
| 32 | const Standard_Boolean PreferClosest) |
| 33 | : myPrior (Prior), |
| 34 | myDepth (Depth), |
| 35 | myDist (Dist), |
| 36 | myTol (Tol), |
| 37 | myPreferClosest(PreferClosest) |
| 38 | {} |
| 39 | |
| 40 | //======================================================================= |
| 41 | //function : IsGreater |
| 42 | //purpose : priorite d'abor, puis profondeur + distance... |
| 43 | //======================================================================= |
| 44 | Standard_Boolean SelectMgr_SortCriterion::IsGreater |
| 45 | (const SelectMgr_SortCriterion& SC) const |
| 46 | { |
| 47 | if ( myPreferClosest ) |
| 48 | { |
| 49 | // closest object is selected unless difference is within tolerance |
| 50 | if ( Abs (myDepth - SC.Depth()) > myTol + SC.Tol() ) |
| 51 | return myDepth < SC.Depth(); |
| 52 | |
| 53 | // if two objects have similar depth, select the one with higher |
| 54 | // priority or, if priorities are equal, one closest to the mouse |
| 55 | return myPrior > SC.Priority() ? Standard_True : |
| 56 | myPrior < SC.Priority() ? Standard_False : |
| 57 | myDist < SC.MinDist(); |
| 58 | } |
| 59 | |
| 60 | // old logic (OCCT version <= 6.3.1) |
| 61 | if(myPrior>SC.Priority()) return Standard_True; |
| 62 | if(myPrior<SC.Priority()) return Standard_False; |
| 63 | if(Abs(myDepth-SC.Depth())<=Precision::Confusion()) |
| 64 | return myDist < SC.MinDist(); |
| 65 | return (myDepth < SC.Depth() ); |
| 66 | } |
| 67 | |
| 68 | //======================================================================= |
| 69 | //function : IsLower |
| 70 | //purpose : On n'utilise que les criteres de profondeur et de priorite... |
| 71 | //======================================================================= |
| 72 | Standard_Boolean SelectMgr_SortCriterion::IsLower |
| 73 | (const SelectMgr_SortCriterion& SC) const |
| 74 | { |
| 75 | if ( myPreferClosest ) |
| 76 | { |
| 77 | // closest object is selected unless difference is within tolerance |
| 78 | if ( myPreferClosest && Abs (myDepth - SC.Depth()) > myTol + SC.Tol() ) |
| 79 | return myDepth > SC.Depth(); |
| 80 | |
| 81 | // if two objects have similar depth, select the one with higher |
| 82 | // priority or, if priorities are equal, one closest to the mouse |
| 83 | return myPrior < SC.Priority() ? Standard_True : |
| 84 | myPrior > SC.Priority() ? Standard_False : |
| 85 | myDist > SC.MinDist(); |
| 86 | } |
| 87 | |
| 88 | // old logic (OCCT version <= 6.3.1) |
| 89 | if(myPrior>SC.Priority()) return Standard_False; |
| 90 | if(myPrior<SC.Priority()) return Standard_True; |
| 91 | if(Abs(myDepth-SC.Depth())<=Precision::Confusion()) |
| 92 | return myDist > SC.MinDist(); |
| 93 | return (myDepth > SC.Depth() ); |
| 94 | } |
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