// Created on: 1993-01-09 // Created by: CKY / Contract Toubro-Larsen ( Kiran ) // Copyright (c) 1993-1999 Matra Datavision // Copyright (c) 1999-2014 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #ifndef _IGESGeom_BSplineSurface_HeaderFile #define _IGESGeom_BSplineSurface_HeaderFile #include #include #include #include #include #include #include class gp_Pnt; class IGESGeom_BSplineSurface; DEFINE_STANDARD_HANDLE(IGESGeom_BSplineSurface, IGESData_IGESEntity) //! defines IGESBSplineSurface, Type <128> Form <0-9> //! in package IGESGeom //! A parametric equation obtained by dividing two summations //! involving weights (which are real numbers), the control //! points, and B-Spline basis functions class IGESGeom_BSplineSurface : public IGESData_IGESEntity { public: Standard_EXPORT IGESGeom_BSplineSurface(); //! This method is used to set the fields of the class //! BSplineSurface //! - anIndexU : Upper index of first sum //! - anIndexV : Upper index of second sum //! - aDegU, aDegV : Degrees of first and second sets //! of basis functions //! - aCloseU, aCloseV : 1 = Closed in U, V directions //! 0 = open in U, V directions //! - aPolynom : 0 = Rational, 1 = polynomial //! - aPeriodU, aPeriodV : 0 = Non periodic in U or V direction //! 1 = Periodic in U or V direction //! - allKnotsU, allKnotsV : Knots in U and V directions //! - allWeights : Array of weights //! - allPoles : XYZ coordinates of all control points //! - aUmin : Starting value of U direction //! - aUmax : Ending value of U direction //! - aVmin : Starting value of V direction //! - aVmax : Ending value of V direction //! raises exception if allWeights & allPoles are not of same size. Standard_EXPORT void Init (const Standard_Integer anIndexU, const Standard_Integer anIndexV, const Standard_Integer aDegU, const Standard_Integer aDegV, const Standard_Boolean aCloseU, const Standard_Boolean aCloseV, const Standard_Boolean aPolynom, const Standard_Boolean aPeriodU, const Standard_Boolean aPeriodV, const Handle(TColStd_HArray1OfReal)& allKnotsU, const Handle(TColStd_HArray1OfReal)& allKnotsV, const Handle(TColStd_HArray2OfReal)& allWeights, const Handle(TColgp_HArray2OfXYZ)& allPoles, const Standard_Real aUmin, const Standard_Real aUmax, const Standard_Real aVmin, const Standard_Real aVmax); //! Changes FormNumber (indicates the Shape of the Surface) //! Error if not in range [0-9] Standard_EXPORT void SetFormNumber (const Standard_Integer form); //! returns the upper index of the first sum (U) Standard_EXPORT Standard_Integer UpperIndexU() const; //! returns the upper index of the second sum (V) Standard_EXPORT Standard_Integer UpperIndexV() const; //! returns degree of first set of basis functions Standard_EXPORT Standard_Integer DegreeU() const; //! returns degree of second set of basis functions Standard_EXPORT Standard_Integer DegreeV() const; //! True if closed in U direction else False Standard_EXPORT Standard_Boolean IsClosedU() const; //! True if closed in V direction else False Standard_EXPORT Standard_Boolean IsClosedV() const; //! True if polynomial, False if rational //! False (D) : computed from Weights //! True : recorded Standard_EXPORT Standard_Boolean IsPolynomial (const Standard_Boolean flag = Standard_False) const; //! True if periodic in U direction else False Standard_EXPORT Standard_Boolean IsPeriodicU() const; //! True if periodic in V direction else False Standard_EXPORT Standard_Boolean IsPeriodicV() const; //! returns number of knots in U direction //! KnotsU are numbered from -DegreeU Standard_EXPORT Standard_Integer NbKnotsU() const; //! returns number of knots in V direction //! KnotsV are numbered from -DegreeV Standard_EXPORT Standard_Integer NbKnotsV() const; //! returns the value of knot referred to by anIndex in U direction //! raises exception if //! anIndex < -DegreeU() or anIndex > (NbKnotsU() - DegreeU()) Standard_EXPORT Standard_Real KnotU (const Standard_Integer anIndex) const; //! returns the value of knot referred to by anIndex in V direction //! raises exception if //! anIndex < -DegreeV() or anIndex > (NbKnotsV() - DegreeV()) Standard_EXPORT Standard_Real KnotV (const Standard_Integer anIndex) const; //! returns number of poles in U direction Standard_EXPORT Standard_Integer NbPolesU() const; //! returns number of poles in V direction Standard_EXPORT Standard_Integer NbPolesV() const; //! returns the weight referred to by anIndex1, anIndex2 //! raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() //! or if anIndex2 <= 0 or anIndex2 > NbPolesV() Standard_EXPORT Standard_Real Weight (const Standard_Integer anIndex1, const Standard_Integer anIndex2) const; //! returns the control point referenced by anIndex1, anIndex2 //! raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() //! or if anIndex2 <= 0 or anIndex2 > NbPolesV() Standard_EXPORT gp_Pnt Pole (const Standard_Integer anIndex1, const Standard_Integer anIndex2) const; //! returns the control point referenced by anIndex1, anIndex2 //! after applying the Transf.Matrix //! raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() //! or if anIndex2 <= 0 or anIndex2 > NbPolesV() Standard_EXPORT gp_Pnt TransformedPole (const Standard_Integer anIndex1, const Standard_Integer anIndex2) const; //! returns starting value in the U direction Standard_EXPORT Standard_Real UMin() const; //! returns ending value in the U direction Standard_EXPORT Standard_Real UMax() const; //! returns starting value in the V direction Standard_EXPORT Standard_Real VMin() const; //! returns ending value in the V direction Standard_EXPORT Standard_Real VMax() const; DEFINE_STANDARD_RTTIEXT(IGESGeom_BSplineSurface,IGESData_IGESEntity) protected: private: Standard_Integer theIndexU; Standard_Integer theIndexV; Standard_Integer theDegreeU; Standard_Integer theDegreeV; Standard_Boolean isClosedU; Standard_Boolean isClosedV; Standard_Boolean isPolynomial; Standard_Boolean isPeriodicU; Standard_Boolean isPeriodicV; Handle(TColStd_HArray1OfReal) theKnotsU; Handle(TColStd_HArray1OfReal) theKnotsV; Handle(TColStd_HArray2OfReal) theWeights; Handle(TColgp_HArray2OfXYZ) thePoles; Standard_Real theUmin; Standard_Real theUmax; Standard_Real theVmin; Standard_Real theVmax; }; #endif // _IGESGeom_BSplineSurface_HeaderFile