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1 | // Created on: 1992-07-01 |
2 | // Created by: Laurent BUCHARD |
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 _IntAna_Quadric_HeaderFile |
18 | #define _IntAna_Quadric_HeaderFile |
19 | |
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20 | #include <Standard_DefineAlloc.hxx> |
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21 | #include <NCollection_List.hxx> |
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22 | |
23 | //! This class provides a description of Quadrics by their |
24 | //! Coefficients in natural coordinate system. |
25 | class IntAna_Quadric |
26 | { |
27 | public: |
28 | |
29 | DEFINE_STANDARD_ALLOC |
30 | |
31 | |
32 | //! Empty Constructor |
33 | Standard_EXPORT IntAna_Quadric(); |
34 | |
35 | //! Creates a Quadric from a Pln |
36 | Standard_EXPORT IntAna_Quadric(const gp_Pln& P); |
37 | |
38 | //! Creates a Quadric from a Sphere |
39 | Standard_EXPORT IntAna_Quadric(const gp_Sphere& Sph); |
40 | |
41 | //! Creates a Quadric from a Cylinder |
42 | Standard_EXPORT IntAna_Quadric(const gp_Cylinder& Cyl); |
43 | |
44 | //! Creates a Quadric from a Cone |
45 | Standard_EXPORT IntAna_Quadric(const gp_Cone& Cone); |
46 | |
47 | //! Initializes the quadric with a Pln |
48 | Standard_EXPORT void SetQuadric (const gp_Pln& P); |
49 | |
50 | //! Initialize the quadric with a Sphere |
51 | Standard_EXPORT void SetQuadric (const gp_Sphere& Sph); |
52 | |
53 | //! Initializes the quadric with a Cone |
54 | Standard_EXPORT void SetQuadric (const gp_Cone& Con); |
55 | |
56 | //! Initializes the quadric with a Cylinder |
57 | Standard_EXPORT void SetQuadric (const gp_Cylinder& Cyl); |
58 | |
59 | //! Returns the coefficients of the polynomial equation |
60 | //! which define the quadric: |
61 | //! xCXX x**2 + xCYY y**2 + xCZZ z**2 |
62 | //! + 2 ( xCXY x y + xCXZ x z + xCYZ y z ) |
63 | //! + 2 ( xCX x + xCY y + xCZ z ) |
64 | //! + xCCte |
65 | Standard_EXPORT void Coefficients (Standard_Real& xCXX, Standard_Real& xCYY, Standard_Real& xCZZ, Standard_Real& xCXY, Standard_Real& xCXZ, Standard_Real& xCYZ, Standard_Real& xCX, Standard_Real& xCY, Standard_Real& xCZ, Standard_Real& xCCte) const; |
66 | |
67 | //! Returns the coefficients of the polynomial equation |
68 | //! ( written in the natural coordinates system ) |
69 | //! in the local coordinates system defined by Axis |
70 | Standard_EXPORT void NewCoefficients (Standard_Real& xCXX, Standard_Real& xCYY, Standard_Real& xCZZ, Standard_Real& xCXY, Standard_Real& xCXZ, Standard_Real& xCYZ, Standard_Real& xCX, Standard_Real& xCY, Standard_Real& xCZ, Standard_Real& xCCte, const gp_Ax3& Axis) const; |
71 | |
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72 | //! Returns the list of special points (with singularities) |
73 | const NCollection_List<gp_Pnt>& SpecialPoints() const |
74 | { |
75 | return mySpecialPoints; |
76 | } |
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77 | |
78 | |
79 | protected: |
80 | |
81 | |
82 | |
83 | |
84 | |
85 | private: |
86 | |
87 | |
88 | |
89 | Standard_Real CXX; |
90 | Standard_Real CYY; |
91 | Standard_Real CZZ; |
92 | Standard_Real CXY; |
93 | Standard_Real CXZ; |
94 | Standard_Real CYZ; |
95 | Standard_Real CX; |
96 | Standard_Real CY; |
97 | Standard_Real CZ; |
98 | Standard_Real CCte; |
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99 | NCollection_List<gp_Pnt> mySpecialPoints; |
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100 | |
101 | }; |
102 | |
103 | |
104 | |
105 | |
106 | |
107 | |
108 | |
109 | #endif // _IntAna_Quadric_HeaderFile |