// Created on: 1996-04-03 // Created by: Stagiaire Frederic CALOONE // Copyright (c) 1996-1999 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 _GeomPlate_BuildPlateSurface_HeaderFile #define _GeomPlate_BuildPlateSurface_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include class Geom_Surface; class GeomPlate_Surface; class GeomPlate_CurveConstraint; class GeomPlate_PointConstraint; class gp_Pnt2d; class gp_Pnt; class Geom2d_Curve; //! This class provides an algorithm for constructing such a plate surface that //! it conforms to given curve and/or point constraints. //! The algorithm accepts or constructs an initial surface //! and looks for a deformation of it satisfying the //! constraints and minimizing energy input. //! A BuildPlateSurface object provides a framework for: //! - defining or setting constraints //! - implementing the construction algorithm //! - consulting the result. class GeomPlate_BuildPlateSurface { public: DEFINE_STANDARD_ALLOC //! Constructor compatible with the old version //! with this constructor the constraint are given in a Array of Curve on Surface //! The array NbPoints contains the number of points for each constraint. //! The Array Tang contains the order of constraint for each Constraint: The possible values for this //! order has to be -1 , 0 , 1 , 2 . Order i means constraint Gi. //! NbIter is the maximum number of iteration to optimise the number of points for resolution //! Degree is the degree of resolution for Plate //! Tol2d is the tolerance used to test if two points of different constraint are identical in the //! parametric space of the initial surface //! Tol3d is used to test if two identical points in the 2d space are identical in 3d space //! TolAng is used to compare the angle between normal of two identical points in the 2d space //! Raises ConstructionError; Standard_EXPORT GeomPlate_BuildPlateSurface(const Handle(TColStd_HArray1OfInteger)& NPoints, const Handle(GeomPlate_HArray1OfHCurve)& TabCurve, const Handle(TColStd_HArray1OfInteger)& Tang, const Standard_Integer Degree, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False); Standard_EXPORT GeomPlate_BuildPlateSurface(const Handle(Geom_Surface)& Surf, const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 10, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False); //! Initializes the BuildPlateSurface framework for //! deforming plate surfaces using curve and point //! constraints. You use the first constructor if you have //! an initial surface to work with at construction time. If //! not, you use the second. You can add one later by //! using the method LoadInitSurface. If no initial //! surface is loaded, one will automatically be computed. //! The curve and point constraints will be defined by //! using the method Add. //! Before the call to the algorithm, the curve constraints //! will be transformed into sequences of discrete points. //! Each curve defined as a constraint will be given the //! value of NbPtsOnCur as the average number of points on it. //! Several arguments serve to improve performance of //! the algorithm. NbIter, for example, expresses the //! number of iterations allowed and is used to control the //! duration of computation. To optimize resolution, //! Degree will have the default value of 3. //! The surface generated must respect several tolerance values: //! - 2d tolerance given by Tol2d, with a default value of 0.00001 //! - 3d tolerance expressed by Tol3d, with a default value of 0.0001 //! - angular tolerance given by TolAng, with a default //! value of 0.01, defining the greatest angle allowed //! between the constraint and the target surface. //! Exceptions //! Standard_ConstructionError if NbIter is less than 1 or Degree is less than 3. Standard_EXPORT GeomPlate_BuildPlateSurface(const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 10, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False); //! Resets all constraints Standard_EXPORT void Init(); //! Loads the initial Surface Standard_EXPORT void LoadInitSurface (const Handle(Geom_Surface)& Surf); //! Adds the linear constraint cont. Standard_EXPORT void Add (const Handle(GeomPlate_CurveConstraint)& Cont); Standard_EXPORT void SetNbBounds (const Standard_Integer NbBounds); //! Adds the point constraint cont. Standard_EXPORT void Add (const Handle(GeomPlate_PointConstraint)& Cont); //! Calls the algorithm and computes the plate surface using //! the loaded constraints. If no initial surface is given, the //! algorithm automatically computes one. //! Exceptions //! Standard_RangeError if the value of the constraint is //! null or if plate is not done. Standard_EXPORT void Perform(const Message_ProgressRange& theProgress = Message_ProgressRange()); //! returns the CurveConstraints of order order Standard_EXPORT Handle(GeomPlate_CurveConstraint) CurveConstraint (const Standard_Integer order) const; //! returns the PointConstraint of order order Standard_EXPORT Handle(GeomPlate_PointConstraint) PointConstraint (const Standard_Integer order) const; Standard_EXPORT void Disc2dContour (const Standard_Integer nbp, TColgp_SequenceOfXY& Seq2d); Standard_EXPORT void Disc3dContour (const Standard_Integer nbp, const Standard_Integer iordre, TColgp_SequenceOfXYZ& Seq3d); //! Tests whether computation of the plate has been completed. Standard_EXPORT Standard_Boolean IsDone() const; //! Returns the result of the computation. This surface can //! then be used by GeomPlate_MakeApprox for //! converting the resulting surface into a BSpline. Standard_EXPORT Handle(GeomPlate_Surface) Surface() const; //! Returns the initial surface Standard_EXPORT Handle(Geom_Surface) SurfInit() const; //! Allows you to ensure that the array of curves returned by //! Curves2d has the correct orientation. Returns the //! orientation of the curves in the array returned by //! Curves2d. Computation changes the orientation of //! these curves. Consequently, this method returns the //! orientation prior to computation. Standard_EXPORT Handle(TColStd_HArray1OfInteger) Sense() const; //! Extracts the array of curves on the plate surface which //! correspond to the curve constraints set in Add. Standard_EXPORT Handle(TColGeom2d_HArray1OfCurve) Curves2d() const; //! Returns the order of the curves in the array returned by //! Curves2d. Computation changes this order. //! Consequently, this method returns the order of the //! curves prior to computation. Standard_EXPORT Handle(TColStd_HArray1OfInteger) Order() const; //! Returns the max distance between the result and the constraints Standard_EXPORT Standard_Real G0Error() const; //! Returns the max angle between the result and the constraints Standard_EXPORT Standard_Real G1Error() const; //! Returns the max difference of curvature between the result and the constraints Standard_EXPORT Standard_Real G2Error() const; //! Returns the max distance between the result and the constraint Index Standard_EXPORT Standard_Real G0Error (const Standard_Integer Index); //! Returns the max angle between the result and the constraint Index Standard_EXPORT Standard_Real G1Error (const Standard_Integer Index); //! Returns the max difference of curvature between the result and the constraint Index Standard_EXPORT Standard_Real G2Error (const Standard_Integer Index); protected: private: //! Evaluates the distance, the angle between normals, and the "courbure" //! on middle points of constraints and corresponding points on the GeomPlate_Surface //! the results are given for a curve c Standard_EXPORT void EcartContraintesMil (const Standard_Integer c, Handle(TColStd_HArray1OfReal)& d, Handle(TColStd_HArray1OfReal)& an, Handle(TColStd_HArray1OfReal)& courb); Standard_EXPORT gp_Pnt2d ProjectPoint (const gp_Pnt& P); Standard_EXPORT Handle(Geom2d_Curve) ProjectCurve (const Handle(Adaptor3d_Curve)& Curv); Standard_EXPORT Handle(Adaptor2d_Curve2d) ProjectedCurve (Handle(Adaptor3d_Curve)& Curv); Standard_EXPORT void ComputeSurfInit(const Message_ProgressRange& theProgress); Standard_EXPORT void Intersect (Handle(GeomPlate_HArray1OfSequenceOfReal)& PntInter, Handle(GeomPlate_HArray1OfSequenceOfReal)& PntG1G1); Standard_EXPORT void Discretise (const Handle(GeomPlate_HArray1OfSequenceOfReal)& PntInter, const Handle(GeomPlate_HArray1OfSequenceOfReal)& PntG1G1); Standard_EXPORT void LoadCurve (const Standard_Integer NbBoucle, const Standard_Integer OrderMax = 2); Standard_EXPORT void LoadPoint (const Standard_Integer NbBoucle, const Standard_Integer OrderMax = 2); Standard_EXPORT void CalculNbPtsInit(); Standard_EXPORT Standard_Boolean VerifSurface (const Standard_Integer NbLoop); Standard_EXPORT void VerifPoints (Standard_Real& dist, Standard_Real& ang, Standard_Real& curv) const; Standard_EXPORT Standard_Boolean CourbeJointive (const Standard_Real tolerance); Standard_EXPORT Standard_Real ComputeAnisotropie() const; Standard_EXPORT Standard_Boolean IsOrderG1() const; Handle(GeomPlate_HSequenceOfCurveConstraint) myLinCont; Handle(GeomPlate_HArray1OfSequenceOfReal) myParCont; Handle(GeomPlate_HArray1OfSequenceOfReal) myPlateCont; Handle(GeomPlate_HSequenceOfPointConstraint) myPntCont; Handle(Geom_Surface) mySurfInit; Handle(Geom_Surface) myPlanarSurfInit; Handle(GeomPlate_Surface) myGeomPlateSurface; Plate_Plate myPlate; Plate_Plate myPrevPlate; Standard_Boolean myAnisotropie; Handle(TColStd_HArray1OfInteger) mySense; Standard_Integer myDegree; Handle(TColStd_HArray1OfInteger) myInitOrder; Standard_Real myG0Error; Standard_Real myG1Error; Standard_Real myG2Error; Standard_Integer myNbPtsOnCur; Standard_Boolean mySurfInitIsGive; Standard_Integer myNbIter; Extrema_ExtPS myProj; Standard_Real myTol2d; Standard_Real myTol3d; Standard_Real myTolAng; Standard_Real myTolU; Standard_Real myTolV; Standard_Integer myNbBounds; Standard_Boolean myIsLinear; Standard_Boolean myFree; }; #endif // _GeomPlate_BuildPlateSurface_HeaderFile