// Created on: 1998-08-26 // Created by: Julia GERASIMOVA // Copyright (c) 1998-1999 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 _BRepOffsetAPI_MakeFilling_HeaderFile #define _BRepOffsetAPI_MakeFilling_HeaderFile #include #include #include #include #include #include #include #include #include #include class TopoDS_Face; class TopoDS_Edge; class gp_Pnt; class TopoDS_Shape; //! N-Side Filling //! This algorithm avoids to build a face from: //! * a set of edges defining the bounds of the face and some //! constraints the surface of the face has to satisfy //! * a set of edges and points defining some constraints //! the support surface has to satisfy //! * an initial surface to deform for satisfying the constraints //! * a set of parameters to control the constraints. //! //! The support surface of the face is computed by deformation //! of the initial surface in order to satisfy the given constraints. //! The set of bounding edges defines the wire of the face. //! //! If no initial surface is given, the algorithm computes it //! automatically. //! If the set of edges is not connected (Free constraint) //! missing edges are automatically computed. //! //! Limitations: //! * If some constraints are not compatible //! The algorithm does not take them into account. //! So the constraints will not be satisfyed in an area containing //! the incompatibilitries. //! * The constraints defining the bound of the face have to be //! entered in order to have a continuous wire. //! //! Other Applications: //! * Deformation of a face to satisfy internal constraints //! * Deformation of a face to improve Gi continuity with //! connected faces class BRepOffsetAPI_MakeFilling : public BRepBuilderAPI_MakeShape { public: DEFINE_STANDARD_ALLOC //! Constructs a wire filling object defined by //! - the energy minimizing criterion Degree //! - the number of points on the curve NbPntsOnCur //! - the number of iterations NbIter //! - the Boolean Anisotropie //! - the 2D tolerance Tol2d //! - the 3D tolerance Tol3d //! - the angular tolerance TolAng //! - the tolerance for curvature TolCur //! - the highest polynomial degree MaxDeg //! - the greatest number of segments MaxSeg. //! If the Boolean Anistropie is true, the algorithm's //! performance is better in cases where the ratio of the //! length U and the length V indicate a great difference //! between the two. In other words, when the surface is, for //! example, extremely long. Standard_EXPORT BRepOffsetAPI_MakeFilling(const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 15, const Standard_Integer NbIter = 2, const Standard_Boolean Anisotropie = Standard_False, 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_Integer MaxDeg = 8, const Standard_Integer MaxSegments = 9); //! Sets the values of Tolerances used to control the constraint. //! Tol2d: //! Tol3d: it is the maximum distance allowed between the support surface //! and the constraints //! TolAng: it is the maximum angle allowed between the normal of the surface //! and the constraints //! TolCurv: it is the maximum difference of curvature allowed between //! the surface and the constraint Standard_EXPORT void SetConstrParam (const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1); //! Sets the parameters used for resolution. //! The default values of these parameters have been chosen for a good //! ratio quality/performance. //! Degree: it is the order of energy criterion to minimize for computing //! the deformation of the surface. //! The default value is 3 //! The recommended value is i+2 where i is the maximum order of the //! constraints. //! NbPtsOnCur: it is the average number of points for discretisation //! of the edges. //! NbIter: it is the maximum number of iterations of the process. //! For each iteration the number of discretisation points is //! increased. //! Anisotropie: Standard_EXPORT void SetResolParam (const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 15, const Standard_Integer NbIter = 2, const Standard_Boolean Anisotropie = Standard_False); //! Sets the parameters used to approximate the filling //! surface. These include: //! - MaxDeg - the highest degree which the polynomial //! defining the filling surface can have //! - MaxSegments - the greatest number of segments //! which the filling surface can have. Standard_EXPORT void SetApproxParam (const Standard_Integer MaxDeg = 8, const Standard_Integer MaxSegments = 9); //! Loads the initial surface Surf to //! begin the construction of the surface. //! This optional function is useful if the surface resulting from //! construction for the algorithm is likely to be complex. //! The support surface of the face under construction is computed by a //! deformation of Surf which satisfies the given constraints. //! The set of bounding edges defines the wire of the face. //! If no initial surface is given, the algorithm computes it //! automatically. If the set of edges is not connected (Free constraint), //! missing edges are automatically computed. //! Important: the initial surface must have orthogonal local coordinates, //! i.e. partial derivatives dS/du and dS/dv must be orthogonal //! at each point of surface. //! If this condition breaks, distortions of resulting surface //! are possible. Standard_EXPORT void LoadInitSurface (const TopoDS_Face& Surf); //! Adds a new constraint which also defines an edge of the wire //! of the face //! Order: Order of the constraint: //! GeomAbs_C0 : the surface has to pass by 3D representation //! of the edge //! GeomAbs_G1 : the surface has to pass by 3D representation //! of the edge and to respect tangency with the first //! face of the edge //! GeomAbs_G2 : the surface has to pass by 3D representation //! of the edge and to respect tangency and curvature //! with the first face of the edge. //! Raises ConstructionError if the edge has no representation on a face and Order is //! GeomAbs_G1 or GeomAbs_G2. Standard_EXPORT Standard_Integer Add (const TopoDS_Edge& Constr, const GeomAbs_Shape Order, const Standard_Boolean IsBound = Standard_True); //! Adds a new constraint which also defines an edge of the wire //! of the face //! Order: Order of the constraint: //! GeomAbs_C0 : the surface has to pass by 3D representation //! of the edge //! GeomAbs_G1 : the surface has to pass by 3D representation //! of the edge and to respect tangency with the //! given face //! GeomAbs_G2 : the surface has to pass by 3D representation //! of the edge and to respect tangency and curvature //! with the given face. //! Raises ConstructionError if the edge has no 2d representation on the given face Standard_EXPORT Standard_Integer Add (const TopoDS_Edge& Constr, const TopoDS_Face& Support, const GeomAbs_Shape Order, const Standard_Boolean IsBound = Standard_True); //! Adds a free constraint on a face. The corresponding edge has to //! be automatically recomputed. It is always a bound. Standard_EXPORT Standard_Integer Add (const TopoDS_Face& Support, const GeomAbs_Shape Order); //! Adds a punctual constraint. Standard_EXPORT Standard_Integer Add (const gp_Pnt& Point); //! Adds a punctual constraint. Standard_EXPORT Standard_Integer Add (const Standard_Real U, const Standard_Real V, const TopoDS_Face& Support, const GeomAbs_Shape Order); //! Builds the resulting faces Standard_EXPORT virtual void Build(const Message_ProgressRange& theRange = Message_ProgressRange()) Standard_OVERRIDE; //! Tests whether computation of the filling plate has been completed. Standard_EXPORT virtual Standard_Boolean IsDone() const Standard_OVERRIDE; //! Returns the list of shapes generated from the //! shape . Standard_EXPORT virtual const TopTools_ListOfShape& Generated (const TopoDS_Shape& S) Standard_OVERRIDE; //! Returns the maximum distance between the result and //! the constraints. This is set at construction time. Standard_EXPORT Standard_Real G0Error() const; //! Returns the maximum angle between the result and the //! constraints. This is set at construction time. Standard_EXPORT Standard_Real G1Error() const; //! Returns the maximum angle between the result and the //! constraints. This is set at construction time. Standard_EXPORT Standard_Real G2Error() const; //! Returns the maximum distance attained between the //! result and the constraint Index. This is set at construction time. Standard_EXPORT Standard_Real G0Error (const Standard_Integer Index); //! Returns the maximum angle between the result and the //! constraints. This is set at construction time. Standard_EXPORT Standard_Real G1Error (const Standard_Integer Index); //! Returns the greatest difference in curvature found //! between the result and the constraint Index. Standard_EXPORT Standard_Real G2Error (const Standard_Integer Index); protected: private: BRepFill_Filling myFilling; }; #endif // _BRepOffsetAPI_MakeFilling_HeaderFile