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1 | // Created on: 1997-02-12 |
2 | // Created by: Laurent BOURESCHE |
3 | // Copyright (c) 1997-1999 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 _Blend_SurfPointFuncInv_HeaderFile |
18 | #define _Blend_SurfPointFuncInv_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <math_FunctionSetWithDerivatives.hxx> |
25 | #include <Standard_Integer.hxx> |
26 | #include <Standard_Boolean.hxx> |
27 | #include <math_Vector.hxx> |
28 | #include <Standard_Real.hxx> |
29 | class math_Matrix; |
30 | class gp_Pnt; |
31 | |
32 | |
33 | //! Deferred class for a function used to compute a |
34 | //! blending surface between a surface and a curve, using |
35 | //! a guide line. This function is used to find a |
36 | //! solution on a done point of the curve. |
37 | //! |
38 | //! The vector <X> used in Value, Values and Derivatives |
39 | //! methods has to be the vector of the parametric |
40 | //! coordinates w, U, V where w is the parameter on the |
41 | //! guide line, U,V are the parametric coordinates of a |
42 | //! point on the partner surface. |
43 | class Blend_SurfPointFuncInv : public math_FunctionSetWithDerivatives |
44 | { |
45 | public: |
46 | |
47 | DEFINE_STANDARD_ALLOC |
48 | |
49 | |
50 | //! Returns 3. |
51 | Standard_EXPORT Standard_Integer NbVariables() const; |
52 | |
53 | //! returns the number of equations of the function. |
54 | Standard_EXPORT virtual Standard_Integer NbEquations() const = 0; |
55 | |
56 | //! computes the values <F> of the Functions for the |
57 | //! variable <X>. |
58 | //! Returns True if the computation was done successfully, |
59 | //! False otherwise. |
60 | Standard_EXPORT virtual Standard_Boolean Value (const math_Vector& X, math_Vector& F) = 0; |
61 | |
62 | //! returns the values <D> of the derivatives for the |
63 | //! variable <X>. |
64 | //! Returns True if the computation was done successfully, |
65 | //! False otherwise. |
66 | Standard_EXPORT virtual Standard_Boolean Derivatives (const math_Vector& X, math_Matrix& D) = 0; |
67 | |
68 | //! returns the values <F> of the functions and the derivatives |
69 | //! <D> for the variable <X>. |
70 | //! Returns True if the computation was done successfully, |
71 | //! False otherwise. |
72 | Standard_EXPORT virtual Standard_Boolean Values (const math_Vector& X, math_Vector& F, math_Matrix& D) = 0; |
73 | |
74 | //! Set the Point on which a solution has to be found. |
75 | Standard_EXPORT virtual void Set (const gp_Pnt& P) = 0; |
76 | |
77 | //! Returns in the vector Tolerance the parametric tolerance |
78 | //! for each of the 3 variables; |
79 | //! Tol is the tolerance used in 3d space. |
80 | Standard_EXPORT virtual void GetTolerance (math_Vector& Tolerance, const Standard_Real Tol) const = 0; |
81 | |
82 | //! Returns in the vector InfBound the lowest values allowed |
83 | //! for each of the 3 variables. |
84 | //! Returns in the vector SupBound the greatest values allowed |
85 | //! for each of the 3 variables. |
86 | Standard_EXPORT virtual void GetBounds (math_Vector& InfBound, math_Vector& SupBound) const = 0; |
87 | |
88 | //! Returns Standard_True if Sol is a zero of the function. |
89 | //! Tol is the tolerance used in 3d space. |
90 | Standard_EXPORT virtual Standard_Boolean IsSolution (const math_Vector& Sol, const Standard_Real Tol) = 0; |
91 | |
92 | |
93 | |
94 | |
95 | protected: |
96 | |
97 | |
98 | |
99 | |
100 | |
101 | private: |
102 | |
103 | |
104 | |
105 | |
106 | |
107 | }; |
108 | |
109 | |
110 | |
111 | |
112 | |
113 | |
114 | |
115 | #endif // _Blend_SurfPointFuncInv_HeaderFile |