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occt/src/BOPAlgo/BOPAlgo_MakerVolume.cxx
emv 291fced1e6 0028187: Add possibility to avoid creation of Internal parts in the result of Volume maker algorithm 
1. The possibility to prevent addition of internal parts has been added into the following algorithms:
- BOPAlgo_BuilderFace;
- BOPAlgo_BuilderSolid;
- BOPAlgo_MakerVolume.

Setting the option to avoid internal parts for MakerVolume algorithm guarantees that the result solids
will be manifold and not contain any internal parts. But it does not prevent from occurrence
of the internal edges or vertices in the faces.

2. The Set/Get methods of the BOPAlgo_BuilderArea class have been made inline.

3. Draw command mkvolume has been updated to take into account the new option.

4. BRepOffset_MakeOffset::BuildShellsCompleteInter() has been modified to use the new option of BOPAlgo_MakerVolume
to speed up the construction of the final result solid.

5. Documentation has been updated with new section dedicated to BOPAlgo_MakerVolume algorithm.

6. Test case for the issue.
2016-12-08 16:59:25 +03:00

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// Created by: Eugeny MALTCHIKOV
// Copyright (c) 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 <Bnd_Box.hxx>
#include <BOPAlgo_BuilderSolid.hxx>
#include <BOPAlgo_MakerVolume.hxx>
#include <BOPAlgo_PaveFiller.hxx>
#include <BOPCol_DataMapOfShapeListOfShape.hxx>
#include <BOPCol_ListOfShape.hxx>
#include <BOPDS_DS.hxx>
#include <BOPTools.hxx>
#include <BOPTools_AlgoTools.hxx>
#include <BRepPrimAPI_MakeBox.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS_Solid.hxx>
static
void AddFace(const TopoDS_Shape& theF,
BOPCol_ListOfShape& theLF);
static
void TreatCompound(const TopoDS_Shape& theS,
BOPCol_MapOfShape& aMFence,
BOPCol_ListOfShape& theLS);
//=======================================================================
//function : CheckData
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::CheckData()
{
if (myArguments.IsEmpty()) {
myErrorStatus = 100; // no arguments to process
return;
}
// myPaveFiller
if (!myPaveFiller) {
myErrorStatus = 101;
return;
}
//
myErrorStatus = myPaveFiller->ErrorStatus();
if (myErrorStatus) {
myErrorStatus = 102; // PaveFiller is failed
return;
}
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::Perform()
{
myErrorStatus = 0;
//
if (myEntryPoint == 1) {
if (myPaveFiller) {
delete myPaveFiller;
myPaveFiller = NULL;
}
}
//
Handle(NCollection_BaseAllocator) aAllocator =
NCollection_BaseAllocator::CommonBaseAllocator();
BOPAlgo_PaveFiller* pPF = new BOPAlgo_PaveFiller(aAllocator);
//
if (!myIntersect) {
//if there is no need to intersect the arguments, then it is necessary
//to create the compound of them and use it as one argument
TopoDS_Compound anArgs;
BRep_Builder aBB;
BOPCol_ListIteratorOfListOfShape aIt;
BOPCol_ListOfShape aLS;
//
aBB.MakeCompound(anArgs);
aIt.Initialize(myArguments);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
aBB.Add(anArgs, aS);
}
aLS.Append(anArgs);
//
pPF->SetArguments(aLS);
}
else {
pPF->SetArguments(myArguments);
}
//
pPF->SetRunParallel(myRunParallel);
pPF->SetProgressIndicator(myProgressIndicator);
pPF->SetFuzzyValue(myFuzzyValue);
pPF->SetNonDestructive(myNonDestructive);
pPF->SetGlue(myGlue);
pPF->Perform();
//
myEntryPoint = 1;
PerformInternal(*pPF);
}
//=======================================================================
//function : PerformInternal1
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::PerformInternal1
(const BOPAlgo_PaveFiller& theFiller)
{
myErrorStatus=0;
//
myPaveFiller = (BOPAlgo_PaveFiller*)&theFiller;
myDS = myPaveFiller->PDS();
myContext = myPaveFiller->Context();
//
// 1. CheckData
CheckData();
if (myErrorStatus) {
return;
}
//
// 2. Prepare
Prepare();
if (myErrorStatus) {
return;
}
//
// 3. Fill Images
// 3.1. Vertice
if (myIntersect) {
FillImagesVertices();
if (myErrorStatus) {
return;
}
// 3.2. Edges
FillImagesEdges();
if (myErrorStatus) {
return;
}
// 3.3. Wires
FillImagesContainers(TopAbs_WIRE);
if (myErrorStatus) {
return;
}
// 3.4. Faces
FillImagesFaces();
if (myErrorStatus) {
return;
}
}
//
// 4. Collect faces
CollectFaces();
if (myErrorStatus) {
return;
}
//
BOPCol_MapOfShape aBoxFaces;
BOPCol_ListOfShape aLSR;
//
// 5. Create bounding box
MakeBox(aBoxFaces);
//
// 6. Make volumes
BuildSolids(aLSR);
if (myErrorStatus) {
return;
}
//
// 7. Treat the result
RemoveBox(aLSR, aBoxFaces);
//
// 8. Fill internal shapes
FillInternalShapes(aLSR);
//
// 9. Build Result
BuildShape(aLSR);
//
// 10. History
PrepareHistory();
//
// 11. Post-treatment
PostTreat();
}
//=======================================================================
//function : CollectFaces
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::CollectFaces()
{
UserBreak();
//
Standard_Integer i, aNbShapes;
BOPCol_ListIteratorOfListOfShape aIt;
BOPCol_MapOfShape aMFence;
//
aNbShapes = myDS->NbSourceShapes();
for (i = 0; i < aNbShapes; ++i) {
const BOPDS_ShapeInfo& aSI = myDS->ShapeInfo(i);
if (aSI.ShapeType() != TopAbs_FACE) {
continue;
}
//
const Bnd_Box& aB = aSI.Box();
myBBox.Add(aB);
//
const TopoDS_Shape& aF = aSI.Shape();
if (myImages.IsBound(aF)) {
const BOPCol_ListOfShape& aLFIm = myImages.Find(aF);
aIt.Initialize(aLFIm);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aFIm = aIt.Value();
if (aMFence.Add(aFIm)) {
AddFace(aFIm, myFaces);
}
}
}
else {
AddFace(aF, myFaces);
}
}
}
//=======================================================================
//function : MakeBox
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::MakeBox(BOPCol_MapOfShape& theBoxFaces)
{
UserBreak();
//
Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax, anExt;
//
anExt = sqrt(myBBox.SquareExtent()) * 0.5;
myBBox.Enlarge(anExt);
myBBox.Get(aXmin, aYmin, aZmin, aXmax, aYmax, aZmax);
//
gp_Pnt aPMin(aXmin, aYmin, aZmin),
aPMax(aXmax, aYmax, aZmax);
//
mySBox = BRepPrimAPI_MakeBox(aPMin, aPMax).Solid();
//
TopExp_Explorer aExp(mySBox, TopAbs_FACE);
for (; aExp.More(); aExp.Next()) {
const TopoDS_Shape& aF = aExp.Current();
myFaces.Append(aF);
theBoxFaces.Add(aF);
}
}
//=======================================================================
//function : BuildSolids
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::BuildSolids(BOPCol_ListOfShape& theLSR)
{
UserBreak();
//
BOPAlgo_BuilderSolid aBS;
//
aBS.SetSolid(mySBox);
aBS.SetShapes(myFaces);
aBS.SetRunParallel(myRunParallel);
aBS.SetAvoidInternalShapes(myAvoidInternalShapes);
aBS.Perform();
if (aBS.ErrorStatus()) {
myErrorStatus = 103;
return;
}
//
theLSR = aBS.Areas();
}
//=======================================================================
//function : TreatResult
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::RemoveBox(BOPCol_ListOfShape& theLSR,
const BOPCol_MapOfShape& theBoxFaces)
{
UserBreak();
//
BOPCol_ListIteratorOfListOfShape aIt;
TopExp_Explorer aExp;
Standard_Boolean bFound;
//
bFound = Standard_False;
aIt.Initialize(theLSR);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aSR = aIt.Value();
//
aExp.Init(aSR, TopAbs_FACE);
for (; aExp.More(); aExp.Next()) {
const TopoDS_Shape& aF = aExp.Current();
if (theBoxFaces.Contains(aF)) {
bFound = Standard_True;
theLSR.Remove(aIt);
break;
}
}
if (bFound) {
break;
}
}
}
//=======================================================================
//function : BuildShape
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::BuildShape(const BOPCol_ListOfShape& theLSR)
{
if (theLSR.Extent() == 1) {
myShape = theLSR.First();
}
else {
BRep_Builder aBB;
BOPCol_ListIteratorOfListOfShape aIt;
//
aIt.Initialize(theLSR);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aSol = aIt.Value();
aBB.Add(myShape, aSol);
}
}
}
//=======================================================================
//function : FillInternalShapes
//purpose :
//=======================================================================
void BOPAlgo_MakerVolume::FillInternalShapes(const BOPCol_ListOfShape& theLSR)
{
if (myAvoidInternalShapes) {
return;
}
//
UserBreak();
//
Standard_Integer aNbSI;
TopAbs_ShapeEnum aType;
TopAbs_State aState;
TopoDS_Iterator aItS;
BRep_Builder aBB;
BOPCol_MapOfShape aMFence;
BOPCol_IndexedMapOfShape aMSS;
BOPCol_ListOfShape aLVE, aLSC, aLSIn;
BOPCol_ListIteratorOfListOfShape aIt, aIt1;
//
// 1. Collect shapes to process: vertices, edges, wires
const BOPCol_ListOfShape& anArguments = myDS->Arguments();
aIt.Initialize(anArguments);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
TreatCompound(aS, aMFence, aLSC);
}
//
aIt.Initialize(aLSC);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
aType = aS.ShapeType();
if (aType == TopAbs_WIRE) {
aItS.Initialize(aS);
for(; aItS.More(); aItS.Next()) {
const TopoDS_Shape& aE = aItS.Value();
if (aMFence.Add(aE)) {
aLVE.Append(aE);
}
}
}
else if (aType == TopAbs_VERTEX || aType == TopAbs_EDGE) {
aLVE.Append(aS);
}
}
//
aIt.Initialize(theLSR);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
BOPTools::MapShapes(aS, TopAbs_EDGE, aMSS);
BOPTools::MapShapes(aS, TopAbs_VERTEX, aMSS);
}
//
aIt.Initialize(aLVE);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
if (myImages.IsBound(aS)) {
const BOPCol_ListOfShape &aLSp = myImages.Find(aS);
aIt1.Initialize(aLSp);
for (; aIt1.More(); aIt1.Next()) {
const TopoDS_Shape& aSp = aIt1.Value();
if (aMSS.Add(aSp)) {
aLSIn.Append(aSp);
}
}
}
else {
if (aMSS.Add(aS)) {
aLSIn.Append(aS);
}
}
}
//
aNbSI = aLSIn.Extent();
if (!aNbSI) {
return;
}
//
// 2. Settle internal vertices and edges into solids
aIt.Initialize(theLSR);
for (; aIt.More(); aIt.Next()) {
TopoDS_Solid aSd = *(TopoDS_Solid*)&aIt.Value();
//
aIt1.Initialize(aLSIn);
for (; aIt1.More(); ) {
TopoDS_Shape aSI = aIt1.Value();
aSI.Orientation(TopAbs_INTERNAL);
//
aState = BOPTools_AlgoTools::ComputeStateByOnePoint(aSI, aSd, 1.e-11, myContext);
if (aState == TopAbs_IN) {
aBB.Add(aSd, aSI);
aLSIn.Remove(aIt1);
}
else {
aIt1.Next();
}
}
}
}
//=======================================================================
//function : AddFace
//purpose :
//=======================================================================
void AddFace(const TopoDS_Shape& theF,
BOPCol_ListOfShape& theLF)
{
TopoDS_Shape aFF = theF;
aFF.Orientation(TopAbs_FORWARD);
theLF.Append(aFF);
aFF.Orientation(TopAbs_REVERSED);
theLF.Append(aFF);
}
//=======================================================================
//function : TreatCompound
//purpose :
//=======================================================================
void TreatCompound(const TopoDS_Shape& theS,
BOPCol_MapOfShape& aMFence,
BOPCol_ListOfShape& theLS)
{
TopAbs_ShapeEnum aType = theS.ShapeType();
if (aType != TopAbs_COMPOUND) {
if (aMFence.Add(theS)) {
theLS.Append(theS);
}
return;
}
//
TopoDS_Iterator aIt(theS);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aS = aIt.Value();
TreatCompound(aS, aMFence, theLS);
}
}
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