lili/OCCT
1
0
Fork 0
mirror of https://github.com/Open-Cascade-SAS/OCCT.git synced 2026-05-11 01:58:22 +08:00
Code Issues Packages Projects Releases Wiki Activity
Files
55b5d19bd8d1a1803be5d53055d03db50e5af64d
OCCT/src/BRepOffsetAPI/BRepOffsetAPI_MakeOffset.cxx
akaftasev 55b5d19bd8 0028684: BRepOffsetAPI_MakeOffset produces wire with another orientation in compare with source wire 
Added flag to reverse resulting shape, if it was reverse in BuildDomains() to bringing to the same direction as the original shape
2021-08-30 09:47:33 +03:00

407 lines
13 KiB
C++
Raw Blame History

// Created on: 1995-09-18
// Created by: Bruno DUMORTIER
// 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.
#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <BRepAlgo_FaceRestrictor.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepFill_ListIteratorOfListOfOffsetWire.hxx>
#include <BRepFill_OffsetWire.hxx>
#include <BRepOffsetAPI_MakeOffset.hxx>
#include <BRepTopAdaptor_FClass2d.hxx>
#include <Extrema_ExtPS.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <Precision.hxx>
#include <StdFail_NotDone.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Wire.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#ifdef OCCT_DEBUG
#include <BRepTools.hxx>
static Standard_Boolean AffichSpine = Standard_False;
#endif
//=======================================================================
//function : BRepOffsetAPI_MakeOffset
//purpose :
//=======================================================================
BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset()
: myIsInitialized( Standard_False),
myJoin(GeomAbs_Arc),
myIsOpenResult(Standard_False)
{
}
//=======================================================================
//function : BRepOffsetAPI_MakeOffset
//purpose :
//=======================================================================
BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset(const TopoDS_Face& Spine,
const GeomAbs_JoinType Join,
const Standard_Boolean IsOpenResult)
{
Init(Spine, Join, IsOpenResult);
}
//=======================================================================
//function : Init
//purpose :
//=======================================================================
void BRepOffsetAPI_MakeOffset::Init(const TopoDS_Face& Spine,
const GeomAbs_JoinType Join,
const Standard_Boolean IsOpenResult)
{
myFace = Spine;
myIsInitialized = Standard_True;
myJoin = Join;
myIsOpenResult = IsOpenResult;
TopExp_Explorer exp;
for (exp.Init(myFace,TopAbs_WIRE); exp.More();exp.Next()) {
myWires.Append(exp.Current());
}
}
//=======================================================================
//function : BRepOffsetAPI_MakeOffset
//purpose :
//=======================================================================
BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset(const TopoDS_Wire& Spine,
const GeomAbs_JoinType Join,
const Standard_Boolean IsOpenResult)
{
myWires.Append(Spine);
myIsInitialized = Standard_True;
myJoin = Join;
myIsOpenResult = IsOpenResult;
}
//=======================================================================
//function : Init
//purpose :
//=======================================================================
void BRepOffsetAPI_MakeOffset::Init(const GeomAbs_JoinType Join,
const Standard_Boolean IsOpenResult)
{
myJoin = Join;
myIsOpenResult = IsOpenResult;
}
//=======================================================================
//function : BRepOffsetAPI_MakeOffset
//purpose :
//=======================================================================
void BRepOffsetAPI_MakeOffset::AddWire(const TopoDS_Wire& Spine)
{
myIsInitialized = Standard_True;
myWires.Append(Spine);
}
//=======================================================================
//function : BuildDomain
//purpose :
//=======================================================================
static void BuildDomains(TopoDS_Face& myFace,
TopTools_ListOfShape& WorkWires,
BRepFill_ListOfOffsetWire& myAlgos,
GeomAbs_JoinType myJoin,
Standard_Boolean myIsOpenResult,
Standard_Boolean isPositive,
Standard_Boolean& isWasReversed)
{
BRepAlgo_FaceRestrictor FR;
TopoDS_Vertex VF,VL;
TopTools_ListOfShape LOW;
BRep_Builder B;
if (myFace.IsNull()) {
myFace = BRepBuilderAPI_MakeFace(TopoDS::Wire(WorkWires.First()),Standard_True);
if (myFace.IsNull())
throw StdFail_NotDone("BRepOffsetAPI_MakeOffset : the wire is not planar");
}
// Modified by Sergey KHROMOV - Thu Apr 26 16:04:43 2001 Begin
TopExp_Explorer anExp(myFace, TopAbs_WIRE);
TopoDS_Shape aWire1 = WorkWires.First();
TopoDS_Shape aWire2;
if (anExp.More()) {
aWire2 = anExp.Current();
if ((aWire1.Orientation() == aWire2.Orientation() && isPositive) ||
(aWire1.Orientation() == TopAbs::Complement(aWire2.Orientation()) && !isPositive)) {
TopTools_ListOfShape LWires;
TopTools_ListIteratorOfListOfShape itl;
for (itl.Initialize(WorkWires); itl.More(); itl.Next()) {
const TopoDS_Shape& W = itl.Value();
LWires.Append(W.Reversed());
}
isWasReversed = Standard_True;
WorkWires = LWires;
}
}
// Modified by Sergey KHROMOV - Thu Apr 26 16:04:44 2001 End
FR.Init(myFace,Standard_True);
//====================================================
// Construction of faces limited by closed wires.
//====================================================
TopTools_ListIteratorOfListOfShape itl(WorkWires);
for (; itl.More(); itl.Next()) {
TopoDS_Wire& W = TopoDS::Wire(itl.Value());
if (W.Closed()){
FR.Add(W);
continue;
}
TopExp::Vertices (W,VF,VL);
if (VF.IsSame(VL)) {
FR.Add(W);
}
else {
LOW.Append(W);
}
}
FR.Perform();
if (!FR.IsDone()) {
throw StdFail_NotDone("BRepOffsetAPI_MakeOffset : Build Domains");
}
TopTools_ListOfShape Faces;
#ifdef OCCT_DEBUG
Standard_Integer ns = 0;
#endif
for (; FR.More(); FR.Next()) {
Faces.Append(FR.Current());
#ifdef OCCT_DEBUG
if(AffichSpine)
{
char name[32];
ns++;
sprintf(name, "FR%d",ns);
BRepTools::Write(FR.Current(), name);
}
#endif
}
//===========================================
// No closed wire => only one domain
//===========================================
if (Faces.IsEmpty()) {
TopoDS_Shape aLocalShape = myFace.EmptyCopied();
TopoDS_Face F = TopoDS::Face(aLocalShape);
// TopoDS_Face F = TopoDS::Face(myFace.EmptyCopied());
TopTools_ListIteratorOfListOfShape itW(LOW);
for ( ; itW.More(); itW.Next()) {
B.Add(F,itW.Value());
}
BRepFill_OffsetWire Algo(F, myJoin, myIsOpenResult);
myAlgos.Append(Algo);
return;
}
//====================================================
// Classification of open wires.
//====================================================
// for (TopTools_ListIteratorOfListOfShape itF(Faces); itF.More(); itF.Next()) {
TopTools_ListIteratorOfListOfShape itF;
for (itF.Initialize(Faces) ; itF.More(); itF.Next()) {
TopoDS_Face& F = TopoDS::Face(itF.Value());
BRepAdaptor_Surface S(F,0);
Standard_Real Tol = BRep_Tool::Tolerance(F);
BRepTopAdaptor_FClass2d CL(F,Precision::Confusion());
TopTools_ListIteratorOfListOfShape itW(LOW);
while (itW.More()) {
TopoDS_Wire& W = TopoDS::Wire(itW.Value());
//=======================================================
// Choice of a point on the wire. + projection on the face.
//=======================================================
TopExp_Explorer exp(W,TopAbs_VERTEX);
TopoDS_Vertex V = TopoDS::Vertex(exp.Current());
gp_Pnt2d PV;
gp_Pnt P3d = BRep_Tool::Pnt(V);
Extrema_ExtPS ExtPS (P3d,S,Tol,Tol);
Standard_Real Dist2Min = Precision::Infinite();
Standard_Real Found = Standard_False;
for (Standard_Integer ie = 1; ie <= ExtPS.NbExt(); ie++) {
Standard_Real X,Y;
if (ExtPS.SquareDistance(ie) < Dist2Min) {
Dist2Min = ExtPS.SquareDistance(ie);
Found = Standard_True;
ExtPS.Point(ie).Parameter(X,Y);
PV.SetCoord(X,Y);
}
}
if ( Found && (CL.Perform(PV) == TopAbs_IN)) {
// The face that contains a wire is found and it is removed from the list
B.Add(F,W);
LOW.Remove(itW);
}
else {
itW.Next();
}
}
}
//========================================
// Creation of algorithms on each domain.
//========================================
for (itF.Initialize(Faces); itF.More(); itF.Next()) {
BRepFill_OffsetWire Algo(TopoDS::Face(itF.Value()), myJoin, myIsOpenResult);
myAlgos.Append(Algo);
}
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
void BRepOffsetAPI_MakeOffset::Perform(const Standard_Real Offset,
const Standard_Real Alt)
{
StdFail_NotDone_Raise_if ( !myIsInitialized,
"BRepOffsetAPI_MakeOffset : Perform without Init");
try
{
Standard_Integer i = 1;
BRepFill_ListIteratorOfListOfOffsetWire itOW;
TopoDS_Compound Res;
BRep_Builder B;
B.MakeCompound (Res);
myLastIsLeft = (Offset <= 0);
Standard_Boolean isWasReversed = Standard_False;
if( Offset <= 0. )
{
if( myLeft.IsEmpty() )
{
// Modified by Sergey KHROMOV - Fri Apr 27 14:35:26 2001 Begin
BuildDomains(myFace,myWires,myLeft,myJoin,myIsOpenResult, Standard_False, isWasReversed);
// Modified by Sergey KHROMOV - Fri Apr 27 14:35:26 2001 End
}
for (itOW.Initialize(myLeft); itOW.More(); itOW.Next())
{
BRepFill_OffsetWire& Algo = itOW.Value();
Algo.Perform(Abs(Offset),Alt);
if (Algo.IsDone() && !Algo.Shape().IsNull())
{
B.Add(Res,isWasReversed ? Algo.Shape().Reversed() : Algo.Shape());
if (i == 1)
myShape = isWasReversed ? Algo.Shape().Reversed() : Algo.Shape();
i++;
}
}
}
else
{
if (myRight.IsEmpty())
{
// Modified by Sergey KHROMOV - Fri Apr 27 14:35:28 2001 Begin
BuildDomains(myFace,myWires,myRight,myJoin,myIsOpenResult, Standard_True, isWasReversed);
// Modified by Sergey KHROMOV - Fri Apr 27 14:35:35 2001 End
}
for(itOW.Initialize(myRight); itOW.More(); itOW.Next())
{
BRepFill_OffsetWire& Algo = itOW.Value();
Algo.Perform(Offset,Alt);
if (Algo.IsDone() && !Algo.Shape().IsNull())
{
B.Add(Res, isWasReversed ? Algo.Shape().Reversed() : Algo.Shape());
if (i == 1)
myShape = isWasReversed ? Algo.Shape().Reversed() : Algo.Shape();
i++;
}
}
}
if( i > 2 )
myShape = Res;
if(myShape.IsNull())
NotDone();
else
Done();
}
catch(Standard_Failure const& anException) {
#ifdef OCCT_DEBUG
std::cout<<"An exception was caught in BRepOffsetAPI_MakeOffset::Perform : ";
anException.Print(std::cout);
std::cout<<std::endl;
#endif
(void)anException;
NotDone();
myShape.Nullify();
}
}
//=======================================================================
//function : Build
//purpose :
//=======================================================================
void BRepOffsetAPI_MakeOffset::Build()
{
Done();
}
//=======================================================================
//function : ShapesFromShape
//purpose :
//=======================================================================
const TopTools_ListOfShape& BRepOffsetAPI_MakeOffset::Generated
(const TopoDS_Shape& S)
{
myGenerated.Clear();
BRepFill_ListIteratorOfListOfOffsetWire itOW;
BRepFill_ListOfOffsetWire* Algos;
Algos= &myLeft;
if (!myLastIsLeft) {
Algos = &myRight;
}
for (itOW.Initialize(*Algos); itOW.More(); itOW.Next()) {
BRepFill_OffsetWire& OW = itOW.Value();
TopTools_ListOfShape L;
L = OW.GeneratedShapes(S.Oriented(TopAbs_FORWARD));
myGenerated.Append(L);
L = OW.GeneratedShapes(S.Oriented(TopAbs_REVERSED));
myGenerated.Append(L);
}
return myGenerated;
}
Reference in New Issue View Git Blame Copy Permalink