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geom/src/BlockFix/BlockFix_UnionFaces.cxx
jfa a1bc463e52 0023451: EDF - Remove Extra edges
2017-06-30 11:06:02 +03:00

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// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File: BlockFix_UnionFaces.cxx
// Created: Tue Dec 7 17:15:42 2004
// Author: Pavel DURANDIN
#include <BlockFix_UnionFaces.hxx>
#include <Basics_OCCTVersion.hxx>
#include <ShapeAnalysis_WireOrder.hxx>
#include <ShapeAnalysis_Edge.hxx>
#include <ShapeBuild_Edge.hxx>
#include <ShapeBuild_ReShape.hxx>
#include <ShapeExtend_WireData.hxx>
#include <ShapeExtend_CompositeSurface.hxx>
#include <ShapeFix_Face.hxx>
#include <ShapeFix_ComposeShell.hxx>
#include <ShapeFix_SequenceOfWireSegment.hxx>
#include <ShapeFix_WireSegment.hxx>
#include <ShapeFix_Wire.hxx>
#include <ShapeFix_Edge.hxx>
#include <IntPatch_ImpImpIntersection.hxx>
#include <BRep_Tool.hxx>
#include <BRep_Builder.hxx>
#include <BRepTools.hxx>
#include <BRepTopAdaptor_TopolTool.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_SequenceOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopTools_MapIteratorOfMapOfShape.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Solid.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Shell.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS_Shape.hxx>
#include <TColGeom_HArray2OfSurface.hxx>
#include <GeomAdaptor_HSurface.hxx>
#include <GeomLib_IsPlanarSurface.hxx>
#include <Geom_Surface.hxx>
#include <Geom_Plane.hxx>
#include <Geom_OffsetSurface.hxx>
#include <Geom_SphericalSurface.hxx>
#include <Geom_CylindricalSurface.hxx>
#include <Geom_SurfaceOfRevolution.hxx>
#include <Geom_SurfaceOfLinearExtrusion.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Line.hxx>
#include <Geom_Circle.hxx>
#include <Geom2d_Line.hxx>
#include <gp_XY.hxx>
#include <gp_Pnt2d.hxx>
#include <Standard_Failure.hxx>
#include <Standard_ErrorHandler.hxx> // CAREFUL ! position of this file is critic : see Lucien PIGNOLONI / OCC
//=======================================================================
//function : BlockFix_UnionFaces
//purpose :
//=======================================================================
BlockFix_UnionFaces::BlockFix_UnionFaces()
: myTolerance(Precision::Confusion()),
myOptimumNbFaces(6)
{
}
//=======================================================================
//function : GetTolerance
//purpose :
//=======================================================================
Standard_Real& BlockFix_UnionFaces::GetTolerance()
{
return myTolerance;
}
//=======================================================================
//function : GetOptimumNbFaces
//purpose :
//=======================================================================
Standard_Integer& BlockFix_UnionFaces::GetOptimumNbFaces()
{
return myOptimumNbFaces;
}
//=======================================================================
//function : AddOrdinaryEdges
//purpose : auxilary
// adds edges from the shape to the sequence
// seams and equal edges are dropped
// Returns true if one of original edges dropped
//=======================================================================
static Standard_Boolean AddOrdinaryEdges(TopTools_SequenceOfShape& edges,
const TopoDS_Shape aShape,
Standard_Integer& anIndex)
{
//map of edges
TopTools_MapOfShape aNewEdges;
TopExp_Explorer exp(aShape,TopAbs_EDGE);
//add edges without seams
for(; exp.More(); exp.Next()) {
TopoDS_Shape edge = exp.Current();
if(aNewEdges.Contains(edge))
aNewEdges.Remove(edge);
else
aNewEdges.Add(edge);
}
Standard_Boolean isDropped = Standard_False;
//merge edges and drop seams
for(Standard_Integer i = 1; i <= edges.Length(); i++) {
TopoDS_Shape current = edges(i);
if(aNewEdges.Contains(current)) {
aNewEdges.Remove(current);
edges.Remove(i);
i--;
if(!isDropped) {
isDropped = Standard_True;
anIndex = i;
}
}
}
//add edges to the sequence
for(exp.ReInit(); exp.More(); exp.Next()) {
const TopoDS_Shape &anEdge = exp.Current();
if (aNewEdges.Contains(anEdge)) {
edges.Append(anEdge);
}
}
return isDropped;
}
//=======================================================================
//function : ClearRts
//purpose : auxilary
//=======================================================================
static Handle(Geom_Surface) ClearRts(const Handle(Geom_Surface)& aSurface)
{
if(aSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
Handle(Geom_RectangularTrimmedSurface) rts =
Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface);
return rts->BasisSurface();
}
return aSurface;
}
//=======================================================================
//function : IsFacesOfSameSolids
//purpose : auxilary
//=======================================================================
static Standard_Boolean IsFacesOfSameSolids
(const TopoDS_Face &theFace1,
const TopoDS_Face &theFace2,
const TopTools_IndexedDataMapOfShapeListOfShape &theMapFaceSolids)
{
Standard_Boolean isSame = Standard_False;
if (theMapFaceSolids.Contains(theFace1) &&
theMapFaceSolids.Contains(theFace2)) {
const TopTools_ListOfShape& aList1 = theMapFaceSolids.FindFromKey(theFace1);
const TopTools_ListOfShape& aList2 = theMapFaceSolids.FindFromKey(theFace2);
if (aList1.Extent() == aList2.Extent()) {
TopTools_ListIteratorOfListOfShape anIter1(aList1);
isSame = Standard_True;
for (; anIter1.More(); anIter1.Next()) {
const TopoDS_Shape &aSolid1 = anIter1.Value();
TopTools_ListIteratorOfListOfShape anIter2(aList2);
for (; anIter2.More(); anIter2.Next()) {
if (aSolid1.IsSame(anIter2.Value())) {
// Same solid is detected. Break the loop
break;
}
}
if (!anIter2.More()) {
// No same solid is detected. Break the loop.
isSame = Standard_False;
break;
}
}
}
}
return isSame;
}
//=======================================================================
//function : IsEdgeValidToMerge
//purpose : Edge is valid if it is not seam or if it is a seam and the face
// has another seam edge.
//=======================================================================
static Standard_Boolean IsEdgeValidToMerge(const TopoDS_Edge &theEdge,
const TopoDS_Face &theFace)
{
Standard_Boolean isValid = Standard_True;
if (BRep_Tool::IsClosed(theEdge, theFace)) {
// Mantis issue 0023451, now code corresponds to the comment to this method
isValid = Standard_False;
// This is a seam edge. Check if there are another seam edges on the face.
TopExp_Explorer anExp(theFace, TopAbs_EDGE);
for (; anExp.More(); anExp.Next()) {
const TopoDS_Shape &aShEdge = anExp.Current();
// Skip same edge.
if (theEdge.IsSame(aShEdge)) {
continue;
}
// Check if this edge is a seam.
TopoDS_Edge anEdge = TopoDS::Edge(aShEdge);
if (BRep_Tool::IsClosed(anEdge, theFace)) {
// Mantis issue 0023451, now code corresponds to the comment to this method
//isValid = Standard_False;
isValid = Standard_True;
break;
}
}
}
return isValid;
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
TopoDS_Shape BlockFix_UnionFaces::Perform(const TopoDS_Shape& Shape)
{
// Fill Map of faces as keys and list of solids or shells as items.
TopTools_IndexedDataMapOfShapeListOfShape aMapFaceSoOrSh;
TopAbs_ShapeEnum aType = Shape.ShapeType();
if (aType != TopAbs_SHELL) {
aType = TopAbs_SOLID;
}
TopExp::MapShapesAndAncestors
(Shape, TopAbs_FACE, aType, aMapFaceSoOrSh);
// processing each solid
Handle(ShapeBuild_ReShape) aContext = new ShapeBuild_ReShape;
TopTools_MapOfShape aProcessed;
TopExp_Explorer exps;
for (exps.Init(Shape, aType); exps.More(); exps.Next()) {
TopoDS_Shape aSoOrSh = exps.Current();
// creating map of edge faces
TopTools_IndexedDataMapOfShapeListOfShape aMapEdgeFaces;
TopExp::MapShapesAndAncestors(aSoOrSh, TopAbs_EDGE, TopAbs_FACE, aMapEdgeFaces);
Standard_Integer NbModif = 0;
Standard_Boolean hasFailed = Standard_False;
Standard_Real tol = Min(Max(Precision::Confusion(), myTolerance/10.), 0.1);
// count faces
int nbf = 0;
TopExp_Explorer exp;
TopTools_MapOfShape mapF;
for (exp.Init(aSoOrSh, TopAbs_FACE); exp.More(); exp.Next()) {
if (mapF.Add(exp.Current()))
nbf++;
}
bool doUnion = ((myOptimumNbFaces == 0) ||
((myOptimumNbFaces > 0) && (nbf > myOptimumNbFaces)));
// processing each face
mapF.Clear();
for (exp.Init(aSoOrSh, TopAbs_FACE); exp.More() && doUnion; exp.Next()) {
TopoDS_Face aFace = TopoDS::Face(exp.Current().Oriented(TopAbs_FORWARD));
if (aProcessed.Contains(aFace)) {
continue;
}
Standard_Integer dummy;
TopTools_SequenceOfShape edges;
AddOrdinaryEdges(edges,aFace,dummy);
TopTools_SequenceOfShape faces;
faces.Append(aFace);
//surface and location to construct result
TopLoc_Location aBaseLocation;
Handle(Geom_Surface) aBaseSurface = BRep_Tool::Surface(aFace,aBaseLocation);
aBaseSurface = ClearRts(aBaseSurface);
aBaseSurface = Handle(Geom_Surface)::DownCast(aBaseSurface->Copy());
// find adjacent faces to union
Standard_Integer i;
for (i = 1; i <= edges.Length(); i++) {
TopoDS_Edge edge = TopoDS::Edge(edges(i));
if (BRep_Tool::Degenerated(edge) || !IsEdgeValidToMerge(edge, aFace))
continue;
const TopTools_ListOfShape& aList = aMapEdgeFaces.FindFromKey(edge);
TopTools_ListIteratorOfListOfShape anIter(aList);
for (; anIter.More(); anIter.Next()) {
TopoDS_Face anCheckedFace = TopoDS::Face(anIter.Value().Oriented(TopAbs_FORWARD));
if (anCheckedFace.IsSame(aFace))
continue;
if (aProcessed.Contains(anCheckedFace))
continue;
if (!IsEdgeValidToMerge(edge, anCheckedFace)) {
// Skip seam edge.
continue;
}
// Check if faces belong to same solids.
if (!IsFacesOfSameSolids(aFace, anCheckedFace, aMapFaceSoOrSh)) {
continue;
}
if (IsSameDomain(aFace,anCheckedFace)) {
if (aList.Extent() != 2) {
// non mainfold case is not processed
continue;
}
// replacing pcurves
TopoDS_Face aMockUpFace;
BRep_Builder B;
B.MakeFace(aMockUpFace,aBaseSurface,aBaseLocation,0.);
MovePCurves(aMockUpFace,anCheckedFace);
if (AddOrdinaryEdges(edges,aMockUpFace,dummy)) {
// sequence edges is modified
i = dummy;
}
faces.Append(anCheckedFace);
aProcessed.Add(anCheckedFace);
break;
}
}
}
// all faces collected in the sequence. Perform union of faces
if (faces.Length() > 1) {
NbModif++;
TopoDS_Face aResult;
BRep_Builder B;
B.MakeFace(aResult,aBaseSurface,aBaseLocation,0);
Standard_Integer nbWires = 0;
// connecting wires
while (edges.Length()>0) {
Standard_Boolean isEdge3d = Standard_False;
nbWires++;
TopTools_MapOfShape aVertices;
TopoDS_Wire aWire;
B.MakeWire(aWire);
TopoDS_Edge anEdge = TopoDS::Edge(edges(1));
edges.Remove(1);
isEdge3d |= !BRep_Tool::Degenerated(anEdge);
B.Add(aWire,anEdge);
TopoDS_Vertex V1,V2;
TopExp::Vertices(anEdge,V1,V2);
aVertices.Add(V1);
aVertices.Add(V2);
Standard_Boolean isNewFound = Standard_False;
do {
isNewFound = Standard_False;
for(Standard_Integer j = 1; j <= edges.Length(); j++) {
anEdge = TopoDS::Edge(edges(j));
TopExp::Vertices(anEdge,V1,V2);
if(aVertices.Contains(V1) || aVertices.Contains(V2)) {
isEdge3d |= !BRep_Tool::Degenerated(anEdge);
aVertices.Add(V1);
aVertices.Add(V2);
B.Add(aWire,anEdge);
edges.Remove(j);
j--;
isNewFound = Standard_True;
}
}
} while (isNewFound);
// sorting any type of edges
aWire = TopoDS::Wire(aContext->Apply(aWire));
Handle(ShapeFix_Wire) sfw = new ShapeFix_Wire(aWire,aResult,Precision::Confusion());
sfw->FixReorder();
Standard_Boolean isDegRemoved = Standard_False;
if(!sfw->StatusReorder ( ShapeExtend_FAIL )) {
// clear degenerated edges if at least one with 3d curve exist
if(isEdge3d) {
Handle(ShapeExtend_WireData) sewd = sfw->WireData();
for(Standard_Integer j = 1; j<=sewd->NbEdges();j++) {
TopoDS_Edge E = sewd->Edge(j);
if(BRep_Tool::Degenerated(E)) {
sewd->Remove(j);
isDegRemoved = Standard_True;
j--;
}
}
}
sfw->FixShifted();
if(isDegRemoved)
sfw->FixDegenerated();
}
TopoDS_Wire aWireFixed = sfw->Wire();
aContext->Replace(aWire,aWireFixed);
// add resulting wire
if(isEdge3d) {
B.Add(aResult,aWireFixed);
}
else {
// sorting edges
Handle(ShapeExtend_WireData) sbwd = sfw->WireData();
Standard_Integer nbEdges = sbwd->NbEdges();
// sort degenerated edges and create one edge instead of several ones
ShapeAnalysis_WireOrder sawo(Standard_False, 0);
ShapeAnalysis_Edge sae;
Standard_Integer aLastEdge = nbEdges;
for(Standard_Integer j = 1; j <= nbEdges; j++) {
Standard_Real f,l;
//smh protection on NULL pcurve
Handle(Geom2d_Curve) c2d;
if(!sae.PCurve(sbwd->Edge(j),aResult,c2d,f,l)) {
aLastEdge--;
continue;
}
sawo.Add(c2d->Value(f).XY(),c2d->Value(l).XY());
}
sawo.Perform();
// constructind one degenerative edge
gp_XY aStart, anEnd, tmp;
Standard_Integer nbFirst = sawo.Ordered(1);
TopoDS_Edge anOrigE = TopoDS::Edge(sbwd->Edge(nbFirst).Oriented(TopAbs_FORWARD));
ShapeBuild_Edge sbe;
TopoDS_Vertex aDummyV;
TopoDS_Edge E = sbe.CopyReplaceVertices(anOrigE,aDummyV,aDummyV);
sawo.XY(nbFirst,aStart,tmp);
sawo.XY(sawo.Ordered(aLastEdge),tmp,anEnd);
gp_XY aVec = anEnd-aStart;
Handle(Geom2d_Line) aLine = new Geom2d_Line(aStart,gp_Dir2d(anEnd-aStart));
B.UpdateEdge(E,aLine,aResult,0.);
B.Range(E,aResult,0.,aVec.Modulus());
Handle(Geom_Curve) C3d;
B.UpdateEdge(E,C3d,0.);
B.Degenerated(E,Standard_True);
TopoDS_Wire aW;
B.MakeWire(aW);
B.Add(aW,E);
B.Add(aResult,aW);
}
}
// perform substitution of face
aContext->Replace(aContext->Apply(aFace),aResult);
ShapeFix_Face sff (aResult);
//Intializing by tolerances
sff.SetPrecision(myTolerance);
sff.SetMinTolerance(tol);
sff.SetMaxTolerance(Max(1.,myTolerance*1000.));
//Setting modes
sff.FixOrientationMode() = 0;
//sff.FixWireMode() = 0;
sff.SetContext(aContext);
// Applying the fixes
sff.Perform();
if(sff.Status(ShapeExtend_FAIL))
hasFailed = Standard_True;
// breaking down to several faces
TopoDS_Shape theResult = aContext->Apply(aResult);
for (TopExp_Explorer aFaceExp (theResult,TopAbs_FACE); aFaceExp.More(); aFaceExp.Next()) {
TopoDS_Face aCurrent = TopoDS::Face(aFaceExp.Current().Oriented(TopAbs_FORWARD));
Handle(TColGeom_HArray2OfSurface) grid = new TColGeom_HArray2OfSurface ( 1, 1, 1, 1 );
grid->SetValue ( 1, 1, aBaseSurface );
Handle(ShapeExtend_CompositeSurface) G = new ShapeExtend_CompositeSurface ( grid );
ShapeFix_ComposeShell CompShell;
CompShell.Init ( G, aBaseLocation, aCurrent, ::Precision::Confusion() );//myPrecision
CompShell.SetContext( aContext );
TopTools_SequenceOfShape parts;
ShapeFix_SequenceOfWireSegment wires;
for(TopExp_Explorer W_Exp(aCurrent,TopAbs_WIRE);W_Exp.More();W_Exp.Next()) {
Handle(ShapeExtend_WireData) sbwd =
new ShapeExtend_WireData ( TopoDS::Wire(W_Exp.Current() ));
ShapeFix_WireSegment seg ( sbwd, TopAbs_REVERSED );
wires.Append(seg);
}
CompShell.DispatchWires ( parts,wires );
for (Standard_Integer j=1; j <= parts.Length(); j++ ) {
ShapeFix_Face aFixOrient(TopoDS::Face(parts(j)));
aFixOrient.SetContext(aContext);
aFixOrient.FixOrientation();
}
TopoDS_Shape CompRes;
if ( faces.Length() !=1 ) {
TopoDS_Shell S;
B.MakeShell ( S );
for ( i=1; i <= parts.Length(); i++ )
B.Add ( S, parts(i) );
CompRes = S;
}
else CompRes = parts(1);
aContext->Replace(aCurrent,CompRes);
}
// remove the remaining faces
for(i = 2; i <= faces.Length(); i++)
aContext->Remove(faces(i));
}
} // end processing each face
//TopoDS_Shape aResult = Shape;
if (NbModif > 0 && !hasFailed) {
TopoDS_Shape aResult = aContext->Apply(aSoOrSh);
ShapeFix_Edge sfe;
for (exp.Init(aResult,TopAbs_EDGE); exp.More(); exp.Next()) {
TopoDS_Edge E = TopoDS::Edge(exp.Current());
sfe.FixVertexTolerance (E);
// ptv add fix same parameter
sfe.FixSameParameter(E, myTolerance);
}
}
for (exp.Init(aSoOrSh, TopAbs_FACE); exp.More(); exp.Next()) {
TopoDS_Face aFace = TopoDS::Face(exp.Current().Oriented(TopAbs_FORWARD));
Handle(ShapeFix_Wire) sfw = new ShapeFix_Wire;
sfw->SetContext(aContext);
sfw->SetPrecision(myTolerance);
sfw->SetMinTolerance(myTolerance);
sfw->SetMaxTolerance(Max(1.,myTolerance*1000.));
sfw->SetFace(aFace);
for (TopoDS_Iterator iter (aFace,Standard_False); iter.More(); iter.Next()) {
TopoDS_Wire wire = TopoDS::Wire(iter.Value());
sfw->Load(wire);
sfw->FixReorder();
sfw->FixShifted();
}
}
} // end processing each solid
const TopoDS_Shape aResShape = aContext->Apply(Shape);
return aResShape;
}
//=======================================================================
//function : IsSameDomain
//purpose :
//=======================================================================
bool getCylinder (Handle(Geom_Surface)& theInSurface, gp_Cylinder& theOutCylinder)
{
bool isCylinder = false;
if (theInSurface->IsKind(STANDARD_TYPE(Geom_CylindricalSurface))) {
Handle(Geom_CylindricalSurface) aGC = Handle(Geom_CylindricalSurface)::DownCast(theInSurface);
theOutCylinder = aGC->Cylinder();
isCylinder = true;
}
else if (theInSurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution))) {
Handle(Geom_SurfaceOfRevolution) aRS =
Handle(Geom_SurfaceOfRevolution)::DownCast(theInSurface);
Handle(Geom_Curve) aBasis = aRS->BasisCurve();
if (aBasis->IsKind(STANDARD_TYPE(Geom_Line))) {
Handle(Geom_Line) aBasisLine = Handle(Geom_Line)::DownCast(aBasis);
gp_Dir aDir = aRS->Direction();
gp_Dir aBasisDir = aBasisLine->Position().Direction();
if (aBasisDir.IsParallel(aDir, Precision::Confusion())) {
// basis line is parallel to the revolution axis: it is a cylinder
gp_Pnt aLoc = aRS->Location();
Standard_Real aR = aBasisLine->Lin().Distance(aLoc);
gp_Ax3 aCylAx (aLoc, aDir);
theOutCylinder = gp_Cylinder(aCylAx, aR);
isCylinder = true;
}
}
}
else if (theInSurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfLinearExtrusion))) {
Handle(Geom_SurfaceOfLinearExtrusion) aLES =
Handle(Geom_SurfaceOfLinearExtrusion)::DownCast(theInSurface);
Handle(Geom_Curve) aBasis = aLES->BasisCurve();
if (aBasis->IsKind(STANDARD_TYPE(Geom_Circle))) {
Handle(Geom_Circle) aBasisCircle = Handle(Geom_Circle)::DownCast(aBasis);
gp_Dir aDir = aLES->Direction();
gp_Dir aBasisDir = aBasisCircle->Position().Direction();
if (aBasisDir.IsParallel(aDir, Precision::Confusion())) {
// basis circle is normal to the extrusion axis: it is a cylinder
gp_Pnt aLoc = aBasisCircle->Location();
Standard_Real aR = aBasisCircle->Radius();
gp_Ax3 aCylAx (aLoc, aDir);
theOutCylinder = gp_Cylinder(aCylAx, aR);
isCylinder = true;
}
}
}
else {
}
return isCylinder;
}
Standard_Boolean BlockFix_UnionFaces::IsSameDomain(const TopoDS_Face& aFace,
const TopoDS_Face& aCheckedFace) const
{
//checking the same handles
TopLoc_Location L1, L2;
Handle(Geom_Surface) S1, S2;
S1 = BRep_Tool::Surface(aFace,L1);
S2 = BRep_Tool::Surface(aCheckedFace,L2);
if (S1 == S2 && L1 == L2)
return true;
// planar and cylindrical cases (IMP 20052)
Standard_Real aPrec = Precision::Confusion();
S1 = BRep_Tool::Surface(aFace);
S2 = BRep_Tool::Surface(aCheckedFace);
S1 = ClearRts(S1);
S2 = ClearRts(S2);
//Handle(Geom_OffsetSurface) aGOFS1, aGOFS2;
//aGOFS1 = Handle(Geom_OffsetSurface)::DownCast(S1);
//aGOFS2 = Handle(Geom_OffsetSurface)::DownCast(S2);
//if (!aGOFS1.IsNull()) S1 = aGOFS1->BasisSurface();
//if (!aGOFS2.IsNull()) S2 = aGOFS2->BasisSurface();
// case of two elementary surfaces: use OCCT tool
// elementary surfaces: ConicalSurface, CylindricalSurface,
// Plane, SphericalSurface and ToroidalSurface
if (S1->IsKind(STANDARD_TYPE(Geom_ElementarySurface)) &&
S2->IsKind(STANDARD_TYPE(Geom_ElementarySurface)))
{
Handle(GeomAdaptor_HSurface) aGA1 = new GeomAdaptor_HSurface(S1);
Handle(GeomAdaptor_HSurface) aGA2 = new GeomAdaptor_HSurface(S2);
Handle(BRepTopAdaptor_TopolTool) aTT1 = new BRepTopAdaptor_TopolTool();
Handle(BRepTopAdaptor_TopolTool) aTT2 = new BRepTopAdaptor_TopolTool();
try {
OCC_CATCH_SIGNALS;
IntPatch_ImpImpIntersection anIIInt (aGA1, aTT1, aGA2, aTT2, aPrec, aPrec);
if (!anIIInt.IsDone() || anIIInt.IsEmpty())
return false;
return anIIInt.TangentFaces();
}
catch (Standard_Failure) {
return false;
}
}
// case of two planar surfaces:
// all kinds of surfaces checked, including b-spline and bezier
GeomLib_IsPlanarSurface aPlanarityChecker1 (S1, aPrec);
if (aPlanarityChecker1.IsPlanar()) {
GeomLib_IsPlanarSurface aPlanarityChecker2 (S2, aPrec);
if (aPlanarityChecker2.IsPlanar()) {
gp_Pln aPln1 = aPlanarityChecker1.Plan();
gp_Pln aPln2 = aPlanarityChecker2.Plan();
if (aPln1.Position().Direction().IsParallel(aPln2.Position().Direction(), aPrec) &&
aPln1.Distance(aPln2) < aPrec) {
return true;
}
}
}
// case of two cylindrical surfaces, at least one of which is a swept surface
// swept surfaces: SurfaceOfLinearExtrusion, SurfaceOfRevolution
if ((S1->IsKind(STANDARD_TYPE(Geom_CylindricalSurface)) ||
S1->IsKind(STANDARD_TYPE(Geom_SweptSurface))) &&
(S2->IsKind(STANDARD_TYPE(Geom_CylindricalSurface)) ||
S2->IsKind(STANDARD_TYPE(Geom_SweptSurface))))
{
gp_Cylinder aCyl1, aCyl2;
if (getCylinder(S1, aCyl1) && getCylinder(S2, aCyl2)) {
if (fabs(aCyl1.Radius() - aCyl2.Radius()) < aPrec) {
gp_Dir aDir1 = aCyl1.Position().Direction();
gp_Dir aDir2 = aCyl2.Position().Direction();
if (aDir1.IsParallel(aDir2, aPrec)) {
gp_Pnt aLoc1 = aCyl1.Location();
gp_Pnt aLoc2 = aCyl2.Location();
gp_Vec aVec12 (aLoc1, aLoc2);
if (aVec12.SquareMagnitude() < aPrec*aPrec ||
aVec12.IsParallel(aDir1, aPrec)) {
return true;
}
}
}
}
}
return false;
}
//=======================================================================
//function : MovePCurves
//purpose :
//=======================================================================
void BlockFix_UnionFaces::MovePCurves(TopoDS_Face& aTarget,
const TopoDS_Face& aSource) const
{
BRep_Builder B;
for(TopExp_Explorer wexp(aSource,TopAbs_WIRE);wexp.More();wexp.Next()) {
Handle(ShapeFix_Wire) sfw = new ShapeFix_Wire(TopoDS::Wire(wexp.Current()),
aTarget, Precision::Confusion());
sfw->FixReorder();
Standard_Boolean isReoredFailed = sfw->StatusReorder ( ShapeExtend_FAIL );
sfw->FixEdgeCurves();
if(isReoredFailed)
continue;
sfw->FixShifted();
sfw->FixDegenerated();
// remove degenerated edges from not degenerated points
ShapeAnalysis_Edge sae;
Handle(ShapeExtend_WireData) sewd = sfw->WireData();
for(Standard_Integer i = 1; i<=sewd->NbEdges();i++) {
TopoDS_Edge E = sewd->Edge(i);
if(BRep_Tool::Degenerated(E)&&!sae.HasPCurve(E,aTarget)) {
sewd->Remove(i);
i--;
}
}
TopoDS_Wire ResWire = sfw->Wire();
B.Add(aTarget,ResWire);
}
}
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