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1 | // Created on: 2016-07-07 |
2 | // Copyright (c) 2016 OPEN CASCADE SAS |
3 | // Created by: Oleg AGASHIN |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #ifndef _BRepMesh_NURBSRangeSplitter_HeaderFile |
17 | #define _BRepMesh_NURBSRangeSplitter_HeaderFile |
18 | |
19 | #include <BRepMesh_UVParamRangeSplitter.hxx> |
20 | #include <IMeshData_Types.hxx> |
21 | #include <IMeshTools_Parameters.hxx> |
22 | |
23 | //! Auxiliary class extending UV range splitter in order to generate |
24 | //! internal nodes for NURBS surface. |
25 | class BRepMesh_NURBSRangeSplitter : public BRepMesh_UVParamRangeSplitter |
26 | { |
27 | public: |
28 | |
29 | //! Constructor. |
30 | BRepMesh_NURBSRangeSplitter() |
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31 | : mySurfaceType(GeomAbs_OtherSurface) |
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32 | { |
33 | } |
34 | |
35 | //! Destructor. |
36 | virtual ~BRepMesh_NURBSRangeSplitter() |
37 | { |
38 | } |
39 | |
40 | //! Updates discrete range of surface according to its geometric range. |
41 | Standard_EXPORT virtual void AdjustRange() Standard_OVERRIDE; |
42 | |
43 | //! Returns list of nodes generated using surface data and specified parameters. |
44 | Standard_EXPORT virtual Handle(IMeshData::ListOfPnt2d) GenerateSurfaceNodes( |
45 | const IMeshTools_Parameters& theParameters) const Standard_OVERRIDE; |
46 | |
47 | protected: |
48 | |
49 | //! Initializes U and V parameters lists using CN continuity intervals. |
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50 | Standard_EXPORT virtual Standard_Boolean initParameters() const; |
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51 | |
52 | private: |
53 | |
54 | //! Computes parameters of filter and applies it to the source parameters. |
55 | Handle(IMeshData::SequenceOfReal) computeGrainAndFilterParameters( |
56 | const IMeshData::IMapOfReal& theSourceParams, |
57 | const Standard_Real theTol2d, |
58 | const Standard_Real theRangeDiff, |
59 | const Standard_Real theDelta, |
60 | const IMeshTools_Parameters& theParameters, |
61 | const Handle(NCollection_IncAllocator)& theAllocator) const; |
62 | |
63 | //! Filters parameters in order to avoid too dence distribution. |
64 | Handle(IMeshData::SequenceOfReal) filterParameters( |
65 | const IMeshData::IMapOfReal& theParams, |
66 | const Standard_Real theMinDist, |
67 | const Standard_Real theFilterDist, |
68 | const Handle(NCollection_IncAllocator)& theAllocator) const; |
69 | |
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70 | enum EdgeType |
71 | { |
72 | Edge_Internal, |
73 | Edge_Frontier |
74 | }; |
75 | |
76 | enum ParamDimension |
77 | { |
78 | Param_U = 0x1, |
79 | Param_V = 0x2 |
80 | }; |
81 | |
82 | //! Finds edges of discrete face and uses its points |
83 | //! as auxiliary control parameters for generation of nodes. |
84 | Standard_Boolean grabParamsOfEdges (const EdgeType theEdgeType, |
85 | const Standard_Integer theParamDimensionFlag) const; |
86 | |
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87 | private: |
88 | |
89 | GeomAbs_SurfaceType mySurfaceType; |
90 | }; |
91 | |
92 | #endif |