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1 | // Copyright (c) 2016 OPEN CASCADE SAS |
| 2 | // |
| 3 | // This file is part of Open CASCADE Technology software library. |
| 4 | // |
| 5 | // This library is free software; you can redistribute it and/or modify it under |
| 6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 7 | // by the Free Software Foundation, with special exception defined in the file |
| 8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 9 | // distribution for complete text of the license and disclaimer of any warranty. |
| 10 | // |
| 11 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 12 | // commercial license or contractual agreement. |
| 13 | |
| 14 | #ifndef _SelectMgr_ToleranceMap_HeaderFile |
| 15 | #define _SelectMgr_ToleranceMap_HeaderFile |
| 16 | |
| 17 | #include <NCollection_DataMap.hxx> |
| 18 | #include <Precision.hxx> |
| 19 | |
| 20 | //! An internal class for calculation of current largest tolerance value which will be applied for creation of selecting frustum by default. |
| 21 | //! Each time the selection set is deactivated, maximum tolerance value will be recalculated. |
| 22 | //! If a user enables custom precision using StdSelect_ViewerSelector3d::SetPixelTolerance, it will be applied to all sensitive entities without any checks. |
| 23 | class SelectMgr_ToleranceMap |
| 24 | { |
| 25 | public: |
| 26 | |
| 27 | //! Sets tolerance values to -1.0 |
| 28 | Standard_EXPORT SelectMgr_ToleranceMap(); |
| 29 | |
| 30 | Standard_EXPORT ~SelectMgr_ToleranceMap(); |
| 31 | |
| 32 | //! Adds the value given to map, checks if the current tolerance value |
| 33 | //! should be replaced by theTolerance |
| 34 | Standard_EXPORT void Add (const Standard_Integer& theTolerance); |
| 35 | |
| 36 | //! Decrements a counter of the tolerance given, checks if the current tolerance value |
| 37 | //! should be recalculated |
| 38 | Standard_EXPORT void Decrement (const Standard_Integer& theTolerance); |
| 39 | |
| 40 | //! Returns a current tolerance that must be applied |
| 41 | Standard_Integer Tolerance() const |
| 42 | { |
| 43 | if (myLargestKey < Precision::Confusion()) |
| 44 | { |
| 45 | return 2; // default tolerance value |
| 46 | } |
| 47 | return myCustomTolerance < 0 |
| 48 | ? myLargestKey |
| 49 | : myLargestKey + myCustomTolerance; |
| 50 | } |
| 51 | |
| 52 | //! Sets tolerance to the given one and disables adaptive checks |
| 53 | void SetCustomTolerance (const Standard_Integer theTolerance) { myCustomTolerance = theTolerance; } |
| 54 | |
| 55 | //! Unsets a custom tolerance and enables adaptive checks |
| 56 | void ResetDefaults() { myCustomTolerance = -1; } |
| 57 | |
| 58 | //! Returns the value of custom tolerance regardless of it validity |
| 59 | Standard_Integer CustomTolerance() const { return myCustomTolerance; } |
| 60 | |
| 61 | //! Returns true if custom tolerance value is greater than zero |
| 62 | Standard_Boolean IsCustomTolSet() const { return myCustomTolerance > 0; } |
| 63 | |
| 64 | private: |
| 65 | NCollection_DataMap<Standard_Integer, Standard_Integer> myTolerances; |
| 66 | Standard_Integer myLargestKey; |
| 67 | Standard_Integer myCustomTolerance; |
| 68 | }; |
| 69 | |
| 70 | #endif // _SelectMgr_ToleranceMap_HeaderFile |
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