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occt/src/BRepOffset/BRepOffset_Tool.hxx
emv 0da0275c18 0028442: Incorrect result of 3D offset operation in mode Complete, Join type - Intersection 
1. For the support of the new configurations of the input shapes for the 3D offset algorithm
(shapes containing the faces with holes, which are growing during offset operation and
sometimes (depending on the offset value) even kill the faces themselves) the new function
*FindFacesInsideHoleWires* has been implemented. This new function looks for the splits of
the offset face located inside the new hole wire built from offset edges of the edges of the
hole wires of the original face. All found splits are simply removed.

2. Test cases for the issue.
2017-03-02 12:31:53 +03:00

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// Created on: 1995-10-23
// Created by: Yves FRICAUD
// Copyright (c) 1995-1999 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 _BRepOffset_Tool_HeaderFile
#define _BRepOffset_Tool_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>
#include <TopAbs_Orientation.hxx>
#include <Standard_Boolean.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopAbs_State.hxx>
#include <Standard_Real.hxx>
#include <TopTools_DataMapOfShapeShape.hxx>
#include <TopTools_DataMapOfShapeListOfShape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
class TopoDS_Edge;
class TopoDS_Vertex;
class TopoDS_Face;
class BRepOffset_Analyse;
class TopoDS_Wire;
class TopoDS_Shape;
class BRepAlgo_AsDes;
class BRepAlgo_Image;
class Geom_Curve;
class BRepOffset_Tool
{
public:
DEFINE_STANDARD_ALLOC
//! <V1> is the FirstVertex ,<V2> is the Last Vertex of <Edge>
//! taking account the orientation of Edge.
Standard_EXPORT static void EdgeVertices (const TopoDS_Edge& E, TopoDS_Vertex& V1, TopoDS_Vertex& V2);
//! returns the cumul of the orientation of <Edge>
//! and thc containing wire in <Face>
Standard_EXPORT static TopAbs_Orientation OriEdgeInFace (const TopoDS_Edge& E, const TopoDS_Face& F);
//! <E> is a section between <F1> and <F2>. Computes
//! <O1> the orientation of <E> in <F1> influenced by <F2>.
//! idem for <O2>.
Standard_EXPORT static void OrientSection (const TopoDS_Edge& E, const TopoDS_Face& F1, const TopoDS_Face& F2, TopAbs_Orientation& O1, TopAbs_Orientation& O2);
//! Looks for the common Vertices and Edges between faces <theF1> and <theF2>.<br>
//! Returns TRUE if common shapes have been found.<br>
//! <theLE> will contain the found common edges;<br>
//! <theLV> will contain the found common vertices.
Standard_EXPORT static Standard_Boolean FindCommonShapes(const TopoDS_Face& theF1,
const TopoDS_Face& theF2,
TopTools_ListOfShape& theLE,
TopTools_ListOfShape& theLV);
//! Looks for the common shapes of type <theType> between shapes <theS1> and <theS2>.<br>
//! Returns TRUE if common shapes have been found.<br>
//! <theLSC> will contain the found common shapes.
Standard_EXPORT static Standard_Boolean FindCommonShapes(const TopoDS_Shape& theS1,
const TopoDS_Shape& theS2,
const TopAbs_ShapeEnum theType,
TopTools_ListOfShape& theLSC);
//! Computes the Section betwwen <F1> and <F2> the
//! edges solution are stored in <LInt1> with the
//! orientation on <F1>, the sames edges are stored in
//! <Lint2> with the orientation on <F2>.
Standard_EXPORT static void Inter3D (const TopoDS_Face& F1, const TopoDS_Face& F2, TopTools_ListOfShape& LInt1, TopTools_ListOfShape& LInt2, const TopAbs_State Side, const TopoDS_Edge& RefEdge, const Standard_Boolean IsRefEdgeDefined = Standard_False);
//! Find if the edges <Edges> of the face <F2> are on
//! the face <F1>.
//! Set in <LInt1> <LInt2> the updated edges.
//! If all the edges are computed, returns true.
Standard_EXPORT static Standard_Boolean TryProject (const TopoDS_Face& F1, const TopoDS_Face& F2, const TopTools_ListOfShape& Edges, TopTools_ListOfShape& LInt1, TopTools_ListOfShape& LInt2, const TopAbs_State Side, const Standard_Real TolConf);
Standard_EXPORT static void PipeInter (const TopoDS_Face& F1, const TopoDS_Face& F2, TopTools_ListOfShape& LInt1, TopTools_ListOfShape& LInt2, const TopAbs_State Side);
Standard_EXPORT static void Inter2d (const TopoDS_Face& F, const TopoDS_Edge& E1, const TopoDS_Edge& E2, TopTools_ListOfShape& LV, const Standard_Real Tol);
Standard_EXPORT static void InterOrExtent (const TopoDS_Face& F1, const TopoDS_Face& F2, TopTools_ListOfShape& LInt1, TopTools_ListOfShape& LInt2, const TopAbs_State Side);
Standard_EXPORT static void CheckBounds (const TopoDS_Face& F, const BRepOffset_Analyse& Analyse, Standard_Boolean& enlargeU, Standard_Boolean& enlargeVfirst, Standard_Boolean& enlargeVlast);
//! if <ChangeGeom> is TRUE , the surface can be
//! changed .
//! if <UpdatePCurve> is TRUE, update the pcurves of the
//! edges of <F> on the new surface.if the surface has been changed,
//! Returns True if The Surface of <NF> has changed.
Standard_EXPORT static Standard_Boolean EnLargeFace (const TopoDS_Face& F, TopoDS_Face& NF, const Standard_Boolean ChangeGeom, const Standard_Boolean UpDatePCurve = Standard_False, const Standard_Boolean enlargeU = Standard_True, const Standard_Boolean enlargeVfirst = Standard_True, const Standard_Boolean enlargeVlast = Standard_True);
Standard_EXPORT static void ExtentFace (const TopoDS_Face& F, TopTools_DataMapOfShapeShape& ConstShapes, TopTools_DataMapOfShapeShape& ToBuild, const TopAbs_State Side, const Standard_Real TolConf, TopoDS_Face& NF);
//! Via the wire explorer store in <NOnV1> for
//! an Edge <E> of <W> his Edge neighbour on the first
//! vertex <V1> of <E>.
//! Store in NOnV2 the Neighbour of <E>on the last
//! vertex <V2> of <E>.
Standard_EXPORT static void BuildNeighbour (const TopoDS_Wire& W, const TopoDS_Face& F, TopTools_DataMapOfShapeShape& NOnV1, TopTools_DataMapOfShapeShape& NOnV2);
//! Store in MVE for a vertex <V> in <S> the incident
//! edges <E> in <S>.
//! An Edge is Store only one Time for a vertex.
Standard_EXPORT static void MapVertexEdges (const TopoDS_Shape& S, TopTools_DataMapOfShapeListOfShape& MVE);
//! Remove the non valid part of an offsetshape
//! 1 - Remove all the free boundary and the faces
//! connex to such edges.
//! 2 - Remove all the shapes not valid in the result
//! (according to the side of offseting)
//! in this verion only the first point is implemented.
Standard_EXPORT static TopoDS_Shape Deboucle3D (const TopoDS_Shape& S, const TopTools_MapOfShape& Boundary);
Standard_EXPORT static void CorrectOrientation (const TopoDS_Shape& SI, const TopTools_IndexedMapOfShape& NewEdges, Handle(BRepAlgo_AsDes)& AsDes, BRepAlgo_Image& InitOffset, const Standard_Real Offset);
Standard_EXPORT static Standard_Real Gabarit (const Handle(Geom_Curve)& aCurve);
//! Compares the normal directions of the planar faces and returns
//! TRUE if the directions are the same with the given precision.<br>
Standard_EXPORT static Standard_Boolean CheckPlanesNormals(const TopoDS_Face& theFace1,
const TopoDS_Face& theFace2,
const Standard_Real theTolAng = 1.e-8);
protected:
private:
};
#endif // _BRepOffset_Tool_HeaderFile
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