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1 | // Created on: 1992-04-06 |
2 | // Created by: Jacques GOUSSARD |
3 | // Copyright (c) 1992-1999 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_ALine_HeaderFile |
18 | #define _IntPatch_ALine_HeaderFile |
19 | |
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20 | #include <Standard_Handle.hxx> |
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21 | |
22 | #include <IntAna_Curve.hxx> |
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23 | #include <IntPatch_Line.hxx> |
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24 | #include <IntPatch_SequenceOfPoint.hxx> |
25 | #include <TColStd_ListOfReal.hxx> |
26 | |
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27 | class IntAna_Curve; |
28 | class IntPatch_Point; |
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29 | class IntPatch_ALine; |
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30 | |
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31 | DEFINE_STANDARD_HANDLE(IntPatch_ALine, IntPatch_Line) |
32 | |
33 | //! Implementation of an intersection line described by a |
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34 | //! parametrized curve. |
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35 | class IntPatch_ALine : public IntPatch_Line |
36 | { |
37 | |
38 | public: |
39 | |
40 | |
41 | //! Creates an analytic intersection line |
42 | //! when the transitions are In or Out. |
43 | Standard_EXPORT IntPatch_ALine(const IntAna_Curve& C, const Standard_Boolean Tang, const IntSurf_TypeTrans Trans1, const IntSurf_TypeTrans Trans2); |
44 | |
45 | //! Creates an analytic intersection line |
46 | //! when the transitions are Touch. |
47 | Standard_EXPORT IntPatch_ALine(const IntAna_Curve& C, const Standard_Boolean Tang, const IntSurf_Situation Situ1, const IntSurf_Situation Situ2); |
48 | |
49 | //! Creates an analytic intersection line |
50 | //! when the transitions are Undecided. |
51 | Standard_EXPORT IntPatch_ALine(const IntAna_Curve& C, const Standard_Boolean Tang); |
52 | |
53 | //! To add a vertex in the list. |
54 | Standard_EXPORT void AddVertex (const IntPatch_Point& Pnt); |
55 | |
56 | //! Replaces the element of range Index in the list |
57 | //! of points. |
58 | void Replace (const Standard_Integer Index, const IntPatch_Point& Pnt); |
59 | |
60 | void SetFirstPoint (const Standard_Integer IndFirst); |
61 | |
62 | void SetLastPoint (const Standard_Integer IndLast); |
63 | |
64 | //! Returns the first parameter on the intersection line. |
65 | //! If IsIncluded returns True, Value and D1 methods can |
66 | //! be call with a parameter equal to FirstParamater. |
67 | //! Otherwise, the parameter must be greater than |
68 | //! FirstParameter. |
69 | Standard_Real FirstParameter (Standard_Boolean& IsIncluded) const; |
70 | |
71 | //! Returns the last parameter on the intersection line. |
72 | //! If IsIncluded returns True, Value and D1 methods can |
73 | //! be call with a parameter equal to LastParamater. |
74 | //! Otherwise, the parameter must be less than LastParameter. |
75 | Standard_Real LastParameter (Standard_Boolean& IsIncluded) const; |
76 | |
77 | //! Returns the point of parameter U on the analytic |
78 | //! intersection line. |
79 | gp_Pnt Value (const Standard_Real U); |
80 | |
81 | //! Returns Standard_True when the derivative at parameter U |
82 | //! is defined on the analytic intersection line. |
83 | //! In that case, Du is the derivative. |
84 | //! Returns Standard_False when it is not possible to |
85 | //! evaluate the derivative. |
86 | //! In both cases, P is the point at parameter U on the |
87 | //! intersection. |
88 | Standard_Boolean D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& Du); |
89 | |
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90 | //! Tries to find the parameters of the point P on the curve. |
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91 | //! If the method returns False, the "projection" is |
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92 | //! impossible. |
93 | //! If the method returns True at least one parameter has been found. |
94 | //! theParams is always sorted in ascending order. |
95 | void FindParameter(const gp_Pnt& P, |
96 | TColStd_ListOfReal& theParams) const; |
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97 | |
98 | //! Returns True if the line has a known First point. |
99 | //! This point is given by the method FirstPoint(). |
100 | Standard_Boolean HasFirstPoint() const; |
101 | |
102 | //! Returns True if the line has a known Last point. |
103 | //! This point is given by the method LastPoint(). |
104 | Standard_Boolean HasLastPoint() const; |
105 | |
106 | //! Returns the IntPoint corresponding to the FirstPoint. |
107 | //! An exception is raised when HasFirstPoint returns False. |
108 | const IntPatch_Point& FirstPoint() const; |
109 | |
110 | //! Returns the IntPoint corresponding to the LastPoint. |
111 | //! An exception is raised when HasLastPoint returns False. |
112 | const IntPatch_Point& LastPoint() const; |
113 | |
114 | Standard_Integer NbVertex() const; |
115 | |
116 | //! Returns the vertex of range Index on the line. |
117 | const IntPatch_Point& Vertex (const Standard_Integer Index) const; |
118 | |
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119 | //! Allows modifying the vertex with index theIndex on the line. |
120 | IntPatch_Point& ChangeVertex(const Standard_Integer theIndex) |
121 | { |
122 | return svtx.ChangeValue(theIndex); |
123 | } |
124 | |
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125 | //! Set the parameters of all the vertex on the line. |
126 | //! if a vertex is already in the line, |
127 | //! its parameter is modified |
128 | //! else a new point in the line is inserted. |
129 | Standard_EXPORT void ComputeVertexParameters (const Standard_Real Tol); |
130 | |
131 | Standard_EXPORT const IntAna_Curve& Curve() const; |
132 | |
133 | |
134 | |
135 | |
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136 | DEFINE_STANDARD_RTTIEXT(IntPatch_ALine,IntPatch_Line) |
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137 | |
138 | protected: |
139 | |
140 | |
141 | |
142 | |
143 | private: |
144 | |
145 | |
146 | IntAna_Curve curv; |
147 | Standard_Boolean fipt; |
148 | Standard_Boolean lapt; |
149 | Standard_Integer indf; |
150 | Standard_Integer indl; |
151 | IntPatch_SequenceOfPoint svtx; |
152 | |
153 | |
154 | }; |
155 | |
156 | |
157 | #include <IntPatch_ALine.lxx> |
158 | |
159 | |
160 | |
161 | |
162 | |
163 | #endif // _IntPatch_ALine_HeaderFile |