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1 | // Created on: 1993-11-26 |
2 | // Created by: Modelistation |
3 | // Copyright (c) 1993-1999 Matra Datavision |
4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
5 | // |
6 | // This file is part of Open CASCADE Technology software library. |
7 | // |
8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
12 | // distribution for complete text of the license and disclaimer of any warranty. |
13 | // |
14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
16 | |
17 | #ifndef _IntPatch_ALineToWLine_HeaderFile |
18 | #define _IntPatch_ALineToWLine_HeaderFile |
19 | |
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20 | #include <Adaptor3d_Surface.hxx> |
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21 | #include <IntPatch_SequenceOfLine.hxx> |
22 | #include <IntSurf_Quadric.hxx> |
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23 | #include <IntSurf_LineOn2S.hxx> |
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24 | |
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25 | class IntPatch_ALine; |
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26 | class IntSurf_PntOn2S; |
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27 | |
28 | class IntPatch_ALineToWLine |
29 | { |
30 | public: |
31 | |
32 | DEFINE_STANDARD_ALLOC |
33 | |
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34 | //! Constructor |
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35 | Standard_EXPORT IntPatch_ALineToWLine(const Handle(Adaptor3d_Surface)& theS1, |
36 | const Handle(Adaptor3d_Surface)& theS2, |
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37 | const Standard_Integer theNbPoints = 200); |
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38 | |
39 | Standard_EXPORT void SetTolOpenDomain (const Standard_Real aT); |
40 | |
41 | Standard_EXPORT Standard_Real TolOpenDomain() const; |
42 | |
43 | Standard_EXPORT void SetTolTransition (const Standard_Real aT); |
44 | |
45 | Standard_EXPORT Standard_Real TolTransition() const; |
46 | |
47 | Standard_EXPORT void SetTol3D (const Standard_Real aT); |
48 | |
49 | Standard_EXPORT Standard_Real Tol3D() const; |
50 | |
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51 | //! Converts aline to the set of Walking-lines and adds |
52 | //! them in theLines. |
53 | Standard_EXPORT void MakeWLine (const Handle(IntPatch_ALine)& aline, |
54 | IntPatch_SequenceOfLine& theLines) const; |
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55 | |
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56 | //! Converts aline (limited by paraminf and paramsup) to the set of |
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57 | //! Walking-lines and adds them in theLines. |
58 | Standard_EXPORT void MakeWLine (const Handle(IntPatch_ALine)& aline, |
59 | const Standard_Real paraminf, |
60 | const Standard_Real paramsup, |
61 | IntPatch_SequenceOfLine& theLines) const; |
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62 | |
63 | protected: |
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64 | //! Computes step value to construct point-line. The step depends on |
65 | //! the local curvature of the intersection line computed in thePOn2S. |
66 | //! theTgMagnitude is the magnitude of tangent vector to the intersection |
67 | //! line (in the point thePOn2S). |
68 | //! Computed step is always in the range [theStepMin, theStepMax]. |
69 | //! Returns FALSE if the step cannot be computed. In this case, its value |
70 | //! will not be changed. |
71 | Standard_EXPORT Standard_Boolean StepComputing(const Handle(IntPatch_ALine)& theALine, |
72 | const IntSurf_PntOn2S& thePOn2S, |
73 | const Standard_Real theLastParOfAline, |
74 | const Standard_Real theCurParam, |
75 | const Standard_Real theTgMagnitude, |
76 | const Standard_Real theStepMin, |
77 | const Standard_Real theStepMax, |
78 | const Standard_Real theMaxDeflection, |
79 | Standard_Real& theStep) const; |
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80 | |
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81 | //! Compares distances from theMidPt to every quadrics with theMaxDeflection |
82 | //! (maximal distance of two ones is taken into account). |
83 | //! Returns the result of this comparison: -1 - small distance, +1 - big distance, |
84 | //! 0 - Dist == theMaxDeflection. Comparisons are done with internal tolerances. |
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85 | Standard_EXPORT Standard_Integer CheckDeflection(const gp_XYZ& theMidPt, |
86 | const Standard_Real theMaxDeflection) const; |
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87 | |
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88 | //! Returns radius of a circle obtained by intersection the quadric with a plane |
89 | //! goes through thePnt3d perpendicular to the quadric axis. This radius is computed |
90 | //! for both quadrics and minimal value is returned. |
91 | //! This check is made for cone and sphere only. |
92 | Standard_EXPORT Standard_Real GetSectionRadius(const gp_Pnt& thePnt3d) const; |
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93 | |
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94 | //! Corrects the U-parameter of an end point (first or last) of the line |
95 | //! if this end point is a pole. |
96 | //! The line must contain at least 3 points. |
97 | //! This is made for cone and sphere only. |
98 | Standard_EXPORT void CorrectEndPoint(Handle(IntSurf_LineOn2S)& theLine, |
99 | const Standard_Integer theIndex) const; |
100 | |
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101 | private: |
102 | |
103 | |
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104 | Handle(Adaptor3d_Surface) myS1; |
105 | Handle(Adaptor3d_Surface) myS2; |
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106 | IntSurf_Quadric myQuad1; |
107 | IntSurf_Quadric myQuad2; |
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108 | |
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109 | //! Approximate number of points in resulting |
110 | //! WLine (precise number of points is computed |
111 | //! by the algorithms) |
112 | Standard_Integer myNbPointsInWline; |
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113 | Standard_Real myTolOpenDomain; |
114 | Standard_Real myTolTransition; |
115 | Standard_Real myTol3D; |
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116 | }; |
117 | |
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118 | #endif // _IntPatch_ALineToWLine_HeaderFile |