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occt/src/BRepLib/BRepLib_MakeWire.cxx
isn 07ef8bdfa2 0027552: Wire creation fails depending on the order of edges 
1) BRepBuilderAPI_MakeWire::Add (const TopTools_ListOfShape &L) method have been completely rewritten. The order of edges is not significant now.
2) The geometric proximity of free vertices from already existing wire and from input list of edges are also have been taken into account. If such vertices are coincident with each other then they are fused into the one. The original wire remains untouched topologically (yet the tolerances and points can be modified).
3) UBTreeFiller is used to speed up the process of picking of coincident vertices.
4) BRepLib now contains the 'new' method - BoundingVertex(..). The implemenation of this method are taken from BOPTools_AlgoTools::MakeVertex(..).
5) The '-unsorted' argument have been added to 'wire' command.

Conflicts:
	src/QABugs/QABugs_20.cxx

Add missing include.

Eliminate warning.
2016-07-28 15:00:28 +03:00

451 lines
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// Created on: 1993-07-23
// Created by: Remi LEQUETTE
// Copyright (c) 1993-1999 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 <BRepLib.hxx>
#include <BRepLib_MakeEdge.hxx>
#include <BRepLib_MakeWire.hxx>
#include <Geom_Curve.hxx>
#include <gp.hxx>
#include <gp_Pnt.hxx>
#include <StdFail_NotDone.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Wire.hxx>
#include <TopTools_MapIteratorOfMapOfShape.hxx>
#include <TopTools_MapOfShape.hxx>
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire() :
myError(BRepLib_EmptyWire)
{
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Edge& E)
{
Add(E);
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Edge& E1,
const TopoDS_Edge& E2)
{
Add(E1);
Add(E2);
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Edge& E1,
const TopoDS_Edge& E2,
const TopoDS_Edge& E3)
{
Add(E1);
Add(E2);
Add(E3);
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Edge& E1,
const TopoDS_Edge& E2,
const TopoDS_Edge& E3,
const TopoDS_Edge& E4)
{
Add(E1);
Add(E2);
Add(E3);
Add(E4);
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Wire& W)
{
Add(W);
}
//=======================================================================
//function : BRepLib_MakeWire
//purpose :
//=======================================================================
BRepLib_MakeWire::BRepLib_MakeWire(const TopoDS_Wire& W,
const TopoDS_Edge& E)
{
Add(W);
Add(E);
}
//=======================================================================
//function : Add
//purpose :
//=======================================================================
void BRepLib_MakeWire::Add(const TopoDS_Wire& W)
{
TopExp_Explorer ex(W,TopAbs_EDGE);
while (ex.More()) {
Add(TopoDS::Edge(ex.Current()));
ex.Next();
}
}
//=======================================================================
//function : Add
//purpose :
//=======================================================================
void BRepLib_MakeWire::Add(const TopoDS_Edge& E)
{
Add(E, Standard_True);
}
//=======================================================================
//function : Add
//purpose :
// PMN 19/03/1998 For the Problem of performance TopExp::Vertices are not used on wire
// PMN 10/09/1998 In case if the wire is previously closed (or degenerated)
// TopExp::Vertices is used to reduce the ambiguity.
// IsCheckGeometryProximity flag : If true => check for the geometry proximity of vertices
//=======================================================================
void BRepLib_MakeWire::Add(const TopoDS_Edge& E, Standard_Boolean IsCheckGeometryProximity)
{
Standard_Boolean forward = Standard_False;
// to tell if it has been decided to add forward
Standard_Boolean reverse = Standard_False;
// to tell if it has been decided to add reversed
Standard_Boolean init = Standard_False;
// To know if it is necessary to calculate VL, VF
BRep_Builder B;
TopoDS_Iterator it;
if (myEdge.IsNull()) {
init = Standard_True;
// first edge, create the wire
B.MakeWire(TopoDS::Wire(myShape));
// set the edge
myEdge = E;
// add the vertices
for (it.Initialize(myEdge); it.More(); it.Next())
myVertices.Add(it.Value());
}
else {
init = myShape.Closed(); // If it is closed no control
TopoDS_Shape aLocalShape = E.Oriented(TopAbs_FORWARD);
TopoDS_Edge EE = TopoDS::Edge(aLocalShape);
// TopoDS_Edge EE = TopoDS::Edge(E.Oriented(TopAbs_FORWARD));
// test the vertices of the edge
Standard_Boolean connected = Standard_False;
Standard_Boolean copyedge = Standard_False;
if (myError != BRepLib_NonManifoldWire) {
if (VF.IsNull() || VL.IsNull())
myError = BRepLib_NonManifoldWire;
}
for (it.Initialize(EE); it.More(); it.Next()) {
const TopoDS_Vertex& VE = TopoDS::Vertex(it.Value());
// if the vertex is in the wire, ok for the connection
if (myVertices.Contains(VE)) {
connected = Standard_True;
myVertex = VE;
if (myError != BRepLib_NonManifoldWire) {
// is it always so ?
if (VF.IsSame(VL)) {
// Orientation indetermined (in 3d) : Preserve the initial
if (!VF.IsSame(VE)) myError = BRepLib_NonManifoldWire;
}
else {
if (VF.IsSame(VE)) {
if (VE.Orientation() == TopAbs_FORWARD)
reverse = Standard_True;
else
forward = Standard_True;
}
else if (VL.IsSame(VE)) {
if (VE.Orientation() == TopAbs_REVERSED)
reverse = Standard_True;
else
forward = Standard_True;
}
else
myError = BRepLib_NonManifoldWire;
}
}
}
else if (IsCheckGeometryProximity)
{
// search if there is a similar vertex in the edge
gp_Pnt PE = BRep_Tool::Pnt(VE);
for (Standard_Integer i = 1; i <= myVertices.Extent(); i++) {
const TopoDS_Vertex& VW = TopoDS::Vertex(myVertices.FindKey(i));
gp_Pnt PW = BRep_Tool::Pnt(VW);
Standard_Real l = PE.Distance(PW);
if ((l < BRep_Tool::Tolerance(VE)) ||
(l < BRep_Tool::Tolerance(VW))) {
copyedge = Standard_True;
if (myError != BRepLib_NonManifoldWire) {
// is it always so ?
if (VF.IsSame(VL)) {
// Orientation indetermined (in 3d) : Preserve the initial
if (!VF.IsSame(VW)) myError = BRepLib_NonManifoldWire;
}
else {
if (VF.IsSame(VW)) {
if (VE.Orientation() == TopAbs_FORWARD)
reverse = Standard_True;
else
forward = Standard_True;
}
else if (VL.IsSame(VW)) {
if (VE.Orientation() == TopAbs_REVERSED)
reverse = Standard_True;
else
forward = Standard_True;
}
else
myError = BRepLib_NonManifoldWire;
}
}
break;
}
}
if (copyedge) {
connected = Standard_True;
}
}
}
if (!connected) {
myError = BRepLib_DisconnectedWire;
NotDone();
return;
}
else {
if (!copyedge) {
myEdge = EE;
for (it.Initialize(EE); it.More(); it.Next())
myVertices.Add(it.Value());
}
else {
// copy the edge
TopoDS_Shape Dummy = EE.EmptyCopied();
myEdge = TopoDS::Edge(Dummy);
for (it.Initialize(EE); it.More(); it.Next()) {
const TopoDS_Vertex& VE = TopoDS::Vertex(it.Value());
gp_Pnt PE = BRep_Tool::Pnt(VE);
Standard_Boolean newvertex = Standard_False;
for (Standard_Integer i = 1; i <= myVertices.Extent(); i++) {
const TopoDS_Vertex& VW = TopoDS::Vertex(myVertices.FindKey(i));
gp_Pnt PW = BRep_Tool::Pnt(VW);
Standard_Real l = PE.Distance(PW), tolE, tolW;
tolW = BRep_Tool::Tolerance(VW);
tolE = BRep_Tool::Tolerance(VE);
if ((l < tolE) || (l < tolW)) {
Standard_Real maxtol = .5*(tolW + tolE + l), cW, cE;
if(maxtol > tolW && maxtol > tolE) {
cW = (maxtol - tolE)/l;
cE = 1. - cW;
}
else if (maxtol > tolW) {maxtol = tolE; cW = 0.; cE = 1.;}
else {maxtol = tolW; cW = 1.; cE = 0.;}
gp_Pnt PC(cW*PW.X() + cE*PE.X(),cW*PW.Y() + cE*PE.Y(),cW*PW.Z() + cE*PE.Z());
B.UpdateVertex(VW, PC, maxtol);
newvertex = Standard_True;
myVertex = VW;
myVertex.Orientation(VE.Orientation());
B.Add(myEdge,myVertex);
B.Transfert(EE,myEdge,VE,myVertex);
break;
}
}
if (!newvertex) {
myVertices.Add(VE);
B.Add(myEdge,VE);
B.Transfert(EE,myEdge,VE,VE);
}
}
}
}
// Make a decision about the orientation of the edge
// If there is an ambiguity (in 3d) preserve the orientation given at input
// Case of ambiguity :
// reverse and forward are false as nothing has been decided :
// closed wire, internal vertex ...
// reverse and forward are true : closed or degenerated edge
if ( ((forward == reverse) && (E.Orientation() == TopAbs_REVERSED)) ||
( reverse && !forward) ) myEdge.Reverse();
}
// add myEdge to myShape
B.Add(myShape,myEdge);
myShape.Closed(Standard_False);
// Initialize VF, VL
if (init) TopExp::Vertices(TopoDS::Wire(myShape), VF,VL);
else {
if (myError == BRepLib_WireDone){ // Update only
TopoDS_Vertex V1,V2,VRef;
TopExp::Vertices(myEdge, V1, V2);
if (V1.IsSame(myVertex)) VRef = V2;
else if (V2.IsSame(myVertex)) VRef = V1;
else {
#ifdef OCCT_DEBUG
cout << "MakeWire : There is a PROBLEM !!" << endl;
#endif
myError = BRepLib_NonManifoldWire;
}
if (VF.IsSame(VL)) {
// Particular case: it is required to control the orientation
#ifdef OCCT_DEBUG
if (!VF.IsSame(myVertex))
cout << "MakeWire : There is a PROBLEM !!" << endl;
#endif
}
else { // General case
if (VF.IsSame(myVertex)) VF = VRef;
else if (VL.IsSame(myVertex)) VL = VRef;
else {
#ifdef OCCT_DEBUG
cout << "MakeWire : Y A UN PROBLEME !!" << endl;
#endif
myError = BRepLib_NonManifoldWire;
}
}
}
if (myError == BRepLib_NonManifoldWire) {
VF = VL = TopoDS_Vertex(); // nullify
}
}
// Test myShape is closed
if (!VF.IsNull() && !VL.IsNull() && VF.IsSame(VL))
myShape.Closed(Standard_True);
myError = BRepLib_WireDone;
Done();
}
//=======================================================================
//function : Wire
//purpose :
//=======================================================================
const TopoDS_Wire& BRepLib_MakeWire::Wire()
{
return TopoDS::Wire(Shape());
}
//=======================================================================
//function : Edge
//purpose :
//=======================================================================
const TopoDS_Edge& BRepLib_MakeWire::Edge()const
{
return myEdge;
}
//=======================================================================
//function : Vertex
//purpose :
//=======================================================================
const TopoDS_Vertex& BRepLib_MakeWire::Vertex()const
{
return myVertex;
}
//=======================================================================
//function : operator
//purpose :
//=======================================================================
BRepLib_MakeWire::operator TopoDS_Wire()
{
return Wire();
}
//=======================================================================
//function : Error
//purpose :
//=======================================================================
BRepLib_WireError BRepLib_MakeWire::Error() const
{
return myError;
}
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