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197 lines
7.9 KiB
C++
197 lines
7.9 KiB
C++
// Created on: 1993-09-13
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// Created by: Jacques GOUSSARD
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// Copyright (c) 1993-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Blend_CSFunction_HeaderFile
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#define _Blend_CSFunction_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Blend_AppFunction.hxx>
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#include <Standard_Boolean.hxx>
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#include <math_Vector.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <TColStd_Array1OfInteger.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColgp_Array1OfVec.hxx>
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#include <TColgp_Array1OfPnt2d.hxx>
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#include <TColgp_Array1OfVec2d.hxx>
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class math_Matrix;
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class gp_Pnt;
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class gp_Pnt2d;
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class gp_Vec;
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class gp_Vec2d;
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class Blend_Point;
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//! Deferred class for a function used to compute a blending
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//! surface between a surface and a curve, using a guide line.
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//! The vector <X> used in Value, Values and Derivatives methods
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//! may be the vector of the parametric coordinates U,V,
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//! W of the extremities of a section on the surface and
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//! the curve.
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class Blend_CSFunction : public Blend_AppFunction
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Returns 3 (default value). Can be redefined.
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Standard_EXPORT virtual Standard_Integer NbVariables() const Standard_OVERRIDE;
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//! returns the number of equations of the function.
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Standard_EXPORT virtual Standard_Integer NbEquations() const Standard_OVERRIDE = 0;
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//! computes the values <F> of the Functions for the
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//! variable <X>.
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//! Returns True if the computation was done successfully,
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//! False otherwise.
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Standard_EXPORT virtual Standard_Boolean Value (const math_Vector& X, math_Vector& F) Standard_OVERRIDE = 0;
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//! returns the values <D> of the derivatives for the
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//! variable <X>.
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//! Returns True if the computation was done successfully,
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//! False otherwise.
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Standard_EXPORT virtual Standard_Boolean Derivatives (const math_Vector& X, math_Matrix& D) Standard_OVERRIDE = 0;
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//! returns the values <F> of the functions and the derivatives
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//! <D> for the variable <X>.
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//! Returns True if the computation was done successfully,
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//! False otherwise.
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Standard_EXPORT virtual Standard_Boolean Values (const math_Vector& X, math_Vector& F, math_Matrix& D) Standard_OVERRIDE = 0;
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//! Sets the value of the parameter along the guide line.
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//! This determines the plane in which the solution has
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//! to be found.
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Standard_EXPORT virtual void Set (const Standard_Real Param) Standard_OVERRIDE = 0;
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//! Sets the bounds of the parametric interval on
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//! the guide line.
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//! This determines the derivatives in these values if the
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//! function is not Cn.
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Standard_EXPORT virtual void Set (const Standard_Real First, const Standard_Real Last) Standard_OVERRIDE = 0;
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//! Returns in the vector Tolerance the parametric tolerance
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//! for each of the 3 variables;
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//! Tol is the tolerance used in 3d space.
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Standard_EXPORT virtual void GetTolerance (math_Vector& Tolerance, const Standard_Real Tol) const Standard_OVERRIDE = 0;
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//! Returns in the vector InfBound the lowest values allowed
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//! for each of the 3 variables.
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//! Returns in the vector SupBound the greatest values allowed
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//! for each of the 3 variables.
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Standard_EXPORT virtual void GetBounds (math_Vector& InfBound, math_Vector& SupBound) const Standard_OVERRIDE = 0;
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//! Returns Standard_True if Sol is a zero of the function.
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//! Tol is the tolerance used in 3d space.
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//! The computation is made at the current value of
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//! the parameter on the guide line.
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Standard_EXPORT virtual Standard_Boolean IsSolution (const math_Vector& Sol, const Standard_Real Tol) Standard_OVERRIDE = 0;
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//! Returns the minimal Distance between two
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//! extremities of calculated sections.
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Standard_EXPORT virtual Standard_Real GetMinimalDistance() const Standard_OVERRIDE;
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//! Returns the point on the first support.
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Standard_EXPORT const gp_Pnt& Pnt1() const Standard_OVERRIDE;
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//! Returns the point on the seconde support.
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Standard_EXPORT const gp_Pnt& Pnt2() const Standard_OVERRIDE;
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//! Returns the point on the surface.
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Standard_EXPORT virtual const gp_Pnt& PointOnS() const = 0;
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//! Returns the point on the curve.
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Standard_EXPORT virtual const gp_Pnt& PointOnC() const = 0;
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//! Returns U,V coordinates of the point on the surface.
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Standard_EXPORT virtual const gp_Pnt2d& Pnt2d() const = 0;
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//! Returns parameter of the point on the curve.
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Standard_EXPORT virtual Standard_Real ParameterOnC() const = 0;
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//! Returns True when it is not possible to compute
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//! the tangent vectors at PointOnS and/or PointOnC.
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Standard_EXPORT virtual Standard_Boolean IsTangencyPoint() const = 0;
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//! Returns the tangent vector at PointOnS, in 3d space.
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Standard_EXPORT virtual const gp_Vec& TangentOnS() const = 0;
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//! Returns the tangent vector at PointOnS, in the
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//! parametric space of the first surface.
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Standard_EXPORT virtual const gp_Vec2d& Tangent2d() const = 0;
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//! Returns the tangent vector at PointOnC, in 3d space.
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Standard_EXPORT virtual const gp_Vec& TangentOnC() const = 0;
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//! Returns the tangent vector at the section,
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//! at the beginning and the end of the section, and
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//! returns the normal (of the surfaces) at
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//! these points.
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Standard_EXPORT virtual void Tangent (const Standard_Real U, const Standard_Real V, gp_Vec& TgS, gp_Vec& NormS) const = 0;
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Standard_EXPORT virtual void GetShape (Standard_Integer& NbPoles, Standard_Integer& NbKnots, Standard_Integer& Degree, Standard_Integer& NbPoles2d) Standard_OVERRIDE = 0;
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//! Returns the tolerance to reach in approximation
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//! to respect
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//! BoundTol error at the Boundary
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//! AngleTol tangent error at the Boundary
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//! SurfTol error inside the surface.
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Standard_EXPORT virtual void GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, math_Vector& Tol3d, math_Vector& Tol1D) const Standard_OVERRIDE = 0;
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Standard_EXPORT virtual void Knots (TColStd_Array1OfReal& TKnots) Standard_OVERRIDE = 0;
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Standard_EXPORT virtual void Mults (TColStd_Array1OfInteger& TMults) Standard_OVERRIDE = 0;
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//! Used for the first and last section
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//! The method returns Standard_True if the derivatives
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//! are computed, otherwise it returns Standard_False.
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Standard_EXPORT virtual Standard_Boolean Section (const Blend_Point& P, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths) Standard_OVERRIDE = 0;
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Standard_EXPORT virtual void Section (const Blend_Point& P, TColgp_Array1OfPnt& Poles, TColgp_Array1OfPnt2d& Poles2d, TColStd_Array1OfReal& Weigths) Standard_OVERRIDE = 0;
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//! Used for the first and last section
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//! The method returns Standard_True if the derivatives
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//! are computed, otherwise it returns Standard_False.
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Standard_EXPORT virtual Standard_Boolean Section (const Blend_Point& P, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfVec& D2Poles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColgp_Array1OfVec2d& D2Poles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths, TColStd_Array1OfReal& D2Weigths) Standard_OVERRIDE;
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protected:
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private:
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};
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#endif // _Blend_CSFunction_HeaderFile
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