mirror of
https://github.com/Open-Cascade-SAS/OCCT.git
synced 2026-06-12 01:50:22 +08:00
128654b60b
BRepMesh: Add new mesh parameter *AllowQualityDecrease* which affects the criteria used for checking of the consistency of the existing mesh to new meshing parameters. So if set to true it will force the meshing of the shape if current deflection strongly vary from the new one, no matter in which side. BRepTools::Clean: Keep triangulation on non-geometric shapes (faces with no surface or edges with no curves).
115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
// Created on: 2016-04-07
|
|
// Copyright (c) 2016 OPEN CASCADE SAS
|
|
// Created by: Oleg AGASHIN
|
|
//
|
|
// 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.
|
|
|
|
#include <IMeshTools_ShapeExplorer.hxx>
|
|
#include <TopExp.hxx>
|
|
#include <TopExp_Explorer.hxx>
|
|
#include <TopoDS.hxx>
|
|
#include <TopoDS_Face.hxx>
|
|
#include <TopoDS_Edge.hxx>
|
|
#include <TopTools_ListOfShape.hxx>
|
|
#include <BRepLib.hxx>
|
|
#include <BRep_Tool.hxx>
|
|
#include <TopTools_MapOfShape.hxx>
|
|
#include <Geom_Surface.hxx>
|
|
|
|
namespace
|
|
{
|
|
//=======================================================================
|
|
// Function: visitEdges
|
|
// Purpose : Explodes the given shape on edges according to the specified
|
|
// criteria and visits each one in order to add it to data model.
|
|
//=======================================================================
|
|
void visitEdges (const Handle (IMeshTools_ShapeVisitor)& theVisitor,
|
|
const TopoDS_Shape& theShape,
|
|
const Standard_Boolean isResetLocation,
|
|
const TopAbs_ShapeEnum theToFind,
|
|
const TopAbs_ShapeEnum theToAvoid = TopAbs_SHAPE)
|
|
{
|
|
TopExp_Explorer aEdgesIt (theShape, theToFind, theToAvoid);
|
|
for (; aEdgesIt.More (); aEdgesIt.Next ())
|
|
{
|
|
const TopoDS_Edge& aEdge = TopoDS::Edge (aEdgesIt.Current ());
|
|
if (!BRep_Tool::IsGeometric (aEdge))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
theVisitor->Visit (isResetLocation ?
|
|
TopoDS::Edge (aEdge.Located (TopLoc_Location ())) :
|
|
aEdge);
|
|
}
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
// Function: Constructor
|
|
// Purpose :
|
|
//=======================================================================
|
|
IMeshTools_ShapeExplorer::IMeshTools_ShapeExplorer (
|
|
const TopoDS_Shape& theShape)
|
|
: IMeshData_Shape (theShape)
|
|
{
|
|
}
|
|
|
|
//=======================================================================
|
|
// Function: Destructor
|
|
// Purpose :
|
|
//=======================================================================
|
|
IMeshTools_ShapeExplorer::~IMeshTools_ShapeExplorer ()
|
|
{
|
|
}
|
|
|
|
//=======================================================================
|
|
// Function: Accept
|
|
// Purpose :
|
|
//=======================================================================
|
|
void IMeshTools_ShapeExplorer::Accept (
|
|
const Handle (IMeshTools_ShapeVisitor)& theVisitor)
|
|
{
|
|
// Explore all free edges in shape.
|
|
visitEdges (theVisitor, GetShape (), Standard_True, TopAbs_EDGE, TopAbs_FACE);
|
|
|
|
// Explore all related to some face edges in shape.
|
|
// make array of faces suitable for processing (excluding faces without surface)
|
|
TopTools_ListOfShape aFaceList;
|
|
BRepLib::ReverseSortFaces (GetShape (), aFaceList);
|
|
TopTools_MapOfShape aFaceMap;
|
|
|
|
const TopLoc_Location aEmptyLoc;
|
|
TopTools_ListIteratorOfListOfShape aFaceIter (aFaceList);
|
|
for (; aFaceIter.More (); aFaceIter.Next ())
|
|
{
|
|
TopoDS_Shape aFaceNoLoc = aFaceIter.Value ();
|
|
aFaceNoLoc.Location (aEmptyLoc);
|
|
if (!aFaceMap.Add(aFaceNoLoc))
|
|
{
|
|
continue; // already processed
|
|
}
|
|
|
|
const TopoDS_Face& aFace = TopoDS::Face (aFaceIter.Value ());
|
|
if (!BRep_Tool::IsGeometric (aFace))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Explore all edges in face.
|
|
visitEdges (theVisitor, aFace, Standard_False, TopAbs_EDGE);
|
|
|
|
// Store only forward faces in order to prevent inverse issue.
|
|
theVisitor->Visit (TopoDS::Face (aFace.Oriented (TopAbs_FORWARD)));
|
|
}
|
|
}
|