1 // Created on: 1993-01-09
2 // Created by: CKY / Contract Toubro-Larsen ( Kiran )
3 // Copyright (c) 1993-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _IGESGeom_SplineCurve_HeaderFile
18 #define _IGESGeom_SplineCurve_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Standard_Integer.hxx>
24 #include <TColStd_HArray1OfReal.hxx>
25 #include <TColStd_HArray2OfReal.hxx>
26 #include <IGESData_IGESEntity.hxx>
27 #include <Standard_Real.hxx>
28 class Standard_DimensionMismatch;
29 class Standard_OutOfRange;
32 class IGESGeom_SplineCurve;
33 DEFINE_STANDARD_HANDLE(IGESGeom_SplineCurve, IGESData_IGESEntity)
35 //! Defines IGESSplineCurve, Type <112> Form <0>
36 //! in package IGESGeom
37 //! The parametric spline is a sequence of parametric
38 //! polynomial segments. The curve could be of the type
39 //! Linear, Quadratic, Cubic, Wilson-Fowler, Modified
40 //! Wilson-Fowler, B-Spline. The N polynomial segments
41 //! are delimited by the break points T(1), T(2), T(3),
43 class IGESGeom_SplineCurve : public IGESData_IGESEntity
49 Standard_EXPORT IGESGeom_SplineCurve();
51 //! This method is used to set the fields of the class
53 //! - aType : Spline Type
58 //! 5 = Modified Wilson-Fowler
60 //! - aDegree : Degree of continuity w.r.t. arc length
61 //! - nbDimensions : Number of dimensions
64 //! - allBreakPoints : Array of break points
65 //! - allXPolynomials : X coordinate polynomials of segments
66 //! - allYPolynomials : Y coordinate polynomials of segments
67 //! - allZPolynomials : Z coordinate polynomials of segments
68 //! - allXValues : Values of 1st, 2nd, 3rd derivatives of
69 //! X polynomials at the terminate point
70 //! and values of X at terminate point
71 //! - allYValues : Values of 1st, 2nd, 3rd derivatives of
72 //! Y polynomials at the terminate point
73 //! and values of Y at terminate point
74 //! - allZvalues : Values of 1st, 2nd, 3rd derivatives of
75 //! Z polynomials at the terminate point
76 //! and values of Z at terminate point
77 //! raises exception if allXPolynomials, allYPolynomials
78 //! & allZPolynomials are not of same size OR allXValues, allYValues
79 //! & allZValues are not of size 4
80 Standard_EXPORT void Init (const Standard_Integer aType, const Standard_Integer aDegree, const Standard_Integer nbDimensions, const Handle(TColStd_HArray1OfReal)& allBreakPoints, const Handle(TColStd_HArray2OfReal)& allXPolynomials, const Handle(TColStd_HArray2OfReal)& allYPolynomials, const Handle(TColStd_HArray2OfReal)& allZPolynomials, const Handle(TColStd_HArray1OfReal)& allXvalues, const Handle(TColStd_HArray1OfReal)& allYvalues, const Handle(TColStd_HArray1OfReal)& allZvalues);
82 //! returns the type of Spline curve
83 Standard_EXPORT Standard_Integer SplineType() const;
85 //! returns the degree of the curve
86 Standard_EXPORT Standard_Integer Degree() const;
88 //! returns the number of dimensions
91 Standard_EXPORT Standard_Integer NbDimensions() const;
93 //! returns the number of segments
94 Standard_EXPORT Standard_Integer NbSegments() const;
96 //! returns breakpoint of piecewise polynomial
97 //! raises exception if Index <= 0 or Index > NbSegments() + 1
98 Standard_EXPORT Standard_Real BreakPoint (const Standard_Integer Index) const;
100 //! returns X coordinate polynomial for segment referred to by Index
101 //! raises exception if Index <= 0 or Index > NbSegments()
102 Standard_EXPORT void XCoordPolynomial (const Standard_Integer Index, Standard_Real& AX, Standard_Real& BX, Standard_Real& CX, Standard_Real& DX) const;
104 //! returns Y coordinate polynomial for segment referred to by Index
105 //! raises exception if Index <= 0 or Index > NbSegments()
106 Standard_EXPORT void YCoordPolynomial (const Standard_Integer Index, Standard_Real& AY, Standard_Real& BY, Standard_Real& CY, Standard_Real& DY) const;
108 //! returns Z coordinate polynomial for segment referred to by Index
109 //! raises exception if Index <= 0 or Index > NbSegments()
110 Standard_EXPORT void ZCoordPolynomial (const Standard_Integer Index, Standard_Real& AZ, Standard_Real& BZ, Standard_Real& CZ, Standard_Real& DZ) const;
112 //! returns the value of X polynomial, the values of 1st, 2nd and
113 //! 3rd derivatives of the X polynomial at the terminate point
114 Standard_EXPORT void XValues (Standard_Real& TPX0, Standard_Real& TPX1, Standard_Real& TPX2, Standard_Real& TPX3) const;
116 //! returns the value of Y polynomial, the values of 1st, 2nd and
117 //! 3rd derivatives of the Y polynomial at the termminate point
118 Standard_EXPORT void YValues (Standard_Real& TPY0, Standard_Real& TPY1, Standard_Real& TPY2, Standard_Real& TPY3) const;
120 //! returns the value of Z polynomial, the values of 1st, 2nd and
121 //! 3rd derivatives of the Z polynomial at the termminate point
122 Standard_EXPORT void ZValues (Standard_Real& TPZ0, Standard_Real& TPZ1, Standard_Real& TPZ2, Standard_Real& TPZ3) const;
127 DEFINE_STANDARD_RTTIEXT(IGESGeom_SplineCurve,IGESData_IGESEntity)
137 Standard_Integer theType;
138 Standard_Integer theDegree;
139 Standard_Integer theNbDimensions;
140 Handle(TColStd_HArray1OfReal) theBreakPoints;
141 Handle(TColStd_HArray2OfReal) theXCoordsPolynomial;
142 Handle(TColStd_HArray2OfReal) theYCoordsPolynomial;
143 Handle(TColStd_HArray2OfReal) theZCoordsPolynomial;
144 Handle(TColStd_HArray1OfReal) theXvalues;
145 Handle(TColStd_HArray1OfReal) theYvalues;
146 Handle(TColStd_HArray1OfReal) theZvalues;
157 #endif // _IGESGeom_SplineCurve_HeaderFile