include/opencascade/ShapeFix.hxx

0001 // Created on: 1998-06-03
0002 // Created by: data exchange team
0003 // Copyright (c) 1998-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _ShapeFix_HeaderFile
0018 #define _ShapeFix_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Standard_Real.hxx>
0025
0026 #include <ShapeExtend_BasicMsgRegistrator.hxx>
0027 #include <Message_ProgressRange.hxx>
0028
0029 class TopoDS_Shape;
0030 class ShapeExtend_BasicMsgRegistrator;
0031 class ShapeBuild_ReShape;
0032
0033 //! This package provides algorithms for fixing
0034 //! problematic (violating Open CASCADE requirements) shapes.
0035 //! Tools from package ShapeAnalysis are used for detecting the problems. The
0036 //! detecting and fixing is done taking in account various
0037 //! criteria implemented in BRepCheck package.
0038 //! Each class of package ShapeFix deals with one
0039 //! certain type of shapes or with some family of problems.
0040 class ShapeFix
0041 {
0042 public:
0043   DEFINE_STANDARD_ALLOC
0044
0045   //! Runs SameParameter from BRepLib with these adaptations :
0046   //! <enforce> forces computations, else they are made only on
0047   //! Edges with flag SameParameter false
0048   //! <preci>, if not precised, is taken for each EDge as its own
0049   //! Tolerance
0050   //! Returns True when done, False if an exception has been raised
0051   //! In case of exception anyway, as many edges as possible have
0052   //! been processed. The passed progress indicator allows user
0053   //! to consult the current progress stage and abort algorithm
0054   //! if needed.
0055   Standard_EXPORT static Standard_Boolean SameParameter(
0056     const TopoDS_Shape&                            shape,
0057     const Standard_Boolean                         enforce,
0058     const Standard_Real                            preci       = 0.0,
0059     const Message_ProgressRange&                   theProgress = Message_ProgressRange(),
0060     const Handle(ShapeExtend_BasicMsgRegistrator)& theMsgReg   = 0);
0061
0062   //! Runs EncodeRegularity from BRepLib taking into account
0063   //! shared components of assemblies, so that each component
0064   //! is processed only once
0065   Standard_EXPORT static void EncodeRegularity(const TopoDS_Shape& shape,
0066                                                const Standard_Real tolang = 1.0e-10);
0067
0068   //! Removes edges which are less than given tolerance from shape
0069   //! with help of ShapeFix_Wire::FixSmall()
0070   Standard_EXPORT static TopoDS_Shape RemoveSmallEdges(TopoDS_Shape&               shape,
0071                                                        const Standard_Real         Tolerance,
0072                                                        Handle(ShapeBuild_ReShape)& context);
0073
0074   //! Fix position of the vertices having tolerance more tnan specified one.;
0075   Standard_EXPORT static Standard_Boolean FixVertexPosition(
0076     TopoDS_Shape&                     theshape,
0077     const Standard_Real               theTolerance,
0078     const Handle(ShapeBuild_ReShape)& thecontext);
0079
0080   //! Calculate size of least edge;
0081   Standard_EXPORT static Standard_Real LeastEdgeSize(TopoDS_Shape& theshape);
0082 };
0083
0084 #endif // _ShapeFix_HeaderFile