gp_Dir GetFaceNormalAtUV(const TopoDS_Face &face, double u, double v, gp_Pnt *pos){
if(face.IsNull()) return gp_Dir(0, 0, 1);
try
{
Handle(Geom_Surface) surf=BRep_Tool::Surface(face); // get surface properties
GeomLProp_SLProps props(surf, u, v, 1, 0.01); // get surface normal
if(!props.IsNormalDefined())return gp_Dir(0, 0, 1);
gp_Dir norm=props.Normal(); // check orientation
if(pos)*pos = props.Value();
if(face.Orientation()==TopAbs_REVERSED) norm.Reverse();
return norm;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
wxMessageBox(wxString(_("Error in GetFaceNormalAtUV")) + _T(": ") + Ctt(e->GetMessageString()));
return gp_Dir(0, 0, 1);
}
catch (const char* str)
{
wxMessageBox(wxString(_("Error in GetFaceNormalAtUV")) + _T(": ") + Ctt(str));
return gp_Dir(0, 0, 1);
}
catch (...)
{
wxMessageBox(_("Error in GetFaceNormalAtUV"));
return gp_Dir(0, 0, 1);
}
}
// TODO: This code is taken from and duplicates code in Part2DObject::positionBySupport()
// Note: We cannot return a reference, because it will become Null.
// Not clear where, because we check for IsNull() here, but as soon as it is passed out of
// this method, it becomes null!
const TopoDS_Face SketchBased::getSupportFace() const {
const App::PropertyLinkSub& Support = static_cast<Part::Part2DObject*>(Sketch.getValue())->Support;
Part::Feature *part = static_cast<Part::Feature*>(Support.getValue());
if (!part || !part->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
throw Base::Exception("Sketch has no support shape");
const std::vector<std::string> &sub = Support.getSubValues();
assert(sub.size()==1);
// get the selected sub shape (a Face)
const Part::TopoShape &shape = part->Shape.getShape();
if (shape._Shape.IsNull())
throw Base::Exception("Sketch support shape is empty!");
TopoDS_Shape sh = shape.getSubShape(sub[0].c_str());
if (sh.IsNull())
throw Base::Exception("Null shape in SketchBased::getSupportFace()!");
const TopoDS_Face face = TopoDS::Face(sh);
if (face.IsNull())
throw Base::Exception("Null face in SketchBased::getSupportFace()!");
BRepAdaptor_Surface adapt(face);
if (adapt.GetType() != GeomAbs_Plane)
throw Base::Exception("No planar face in SketchBased::getSupportFace()!");
return face;
}
void PointOnFacesProjector::prepare(const TopoDS_Shape& faces)
{
d->clear();
// Build the UB tree for binary search of points
internal::UBTreeOfNodeIndicesFiller_t ubTreeFiller(d->m_ubTree, Standard_False);
for (TopExp_Explorer exp(faces, TopAbs_FACE); exp.More(); exp.Next()) {
const TopoDS_Face face = TopoDS::Face(exp.Current());
if (!face.IsNull()) {
TopLoc_Location loc;
const Handle_Poly_Triangulation& triangulation = BRep_Tool::Triangulation(face, loc);
if (!triangulation.IsNull()) {
d->insertMapping(triangulation, face);
const gp_Trsf& trsf = loc.Transformation();
const TColgp_Array1OfPnt& nodes = triangulation->Nodes();
for (int i = nodes.Lower(); i <= nodes.Upper(); ++i) {
const gp_Pnt iNode(nodes(i).Transformed(trsf));
Bnd_Box ibb;
ibb.Set(iNode);
ubTreeFiller.Add(std::make_pair(i, triangulation), ibb);
}
}
}
}
ubTreeFiller.Fill();
}
void OCCRegion::replaceFacesInternal(std::list<GFace*> &new_faces)
{
// we simply replace old faces by new faces in the structure
TopExp_Explorer aExpS, aExpF;
BRep_Builder aBB;
TopoDS_Compound aCmp;
aBB.MakeCompound(aCmp);
TopoDS_Solid _s_replacement;
aBB.MakeSolid(_s_replacement);
_s_replacement.Orientation(s.Orientation());
aExpS.Init(s, TopAbs_SHELL);
for (; aExpS.More(); aExpS.Next()) {
const TopoDS_Shell& _shell=TopoDS::Shell(aExpS.Current());
TopoDS_Shell _shell_replacement;
aBB.MakeShell(_shell_replacement);
_shell_replacement.Orientation(_shell.Orientation());
aExpF.Init(_shell, TopAbs_FACE);
for (; aExpF.More(); aExpF.Next()) {
const TopoDS_Face& _face=TopoDS::Face(aExpF.Current());
TopoDS_Face _face_replacement;
std::list<GFace*>::iterator it = l_faces.begin();
std::list<GFace*>::iterator it2 = new_faces.begin();
for ( ; it != l_faces.end() ; ++it,++it2){
OCCFace *occF = dynamic_cast<OCCFace*>(*it);
if (occF){
TopoDS_Face oldf = occF->getTopoDS_Face();
if (oldf.IsSame(_face)){
_face_replacement = *((TopoDS_Face*)(*it2)->getNativePtr());
}
else {
oldf = occF->getTopoDS_FaceOld();
if (oldf.IsSame(_face)){
_face_replacement = *((TopoDS_Face*)(*it2)->getNativePtr());
}
}
}
}
if (_face_replacement.IsNull()){
Msg::Error("cannot find an face for gluing a region");
}
if (_face_replacement.IsSame(_face)) {
aBB.Add(_shell_replacement, _face);
}
else {
if(FaceHaveDifferentOrientations(_face, _face_replacement))
_face_replacement.Reverse();
aBB.Add(_shell_replacement, _face_replacement);
}
}
aBB.Add(_s_replacement, _shell_replacement);
}
s = _s_replacement;
setup();
}
void
GEOM_WireframeFace::
OCC2VTK(const TopoDS_Face& theFace,
vtkPolyData* thePolyData,
vtkPoints* thePts,
const int theNbIso[2],
const int theDiscret)
{
TopoDS_Face aFace = theFace;
aFace.Orientation(TopAbs_FORWARD);
CreateIso(aFace,theNbIso,theDiscret,thePolyData,thePts);
}
bool SMESH_MesherHelper::GetNodeUVneedInFaceNode(const TopoDS_Face& F) const
{
if ( F.IsNull() ) return !mySeamShapeIds.empty();
if ( !F.IsNull() && !myShape.IsNull() && myShape.IsSame( F ))
return !mySeamShapeIds.empty();
Handle(Geom_Surface) aSurface = BRep_Tool::Surface( F );
if ( !aSurface.IsNull() )
return ( aSurface->IsUPeriodic() || aSurface->IsVPeriodic() );
return false;
}
void ProfileBased::getUpToFaceFromLinkSub(TopoDS_Face& upToFace,
const App::PropertyLinkSub& refFace)
{
App::DocumentObject* ref = refFace.getValue();
std::vector<std::string> subStrings = refFace.getSubValues();
if (ref == NULL)
throw Base::ValueError("SketchBased: Up to face: No face selected");
if (ref->getTypeId().isDerivedFrom(App::Plane::getClassTypeId())) {
upToFace = TopoDS::Face(makeShapeFromPlane(ref));
return;
} else if (ref->getTypeId().isDerivedFrom(PartDesign::Plane::getClassTypeId())) {
Part::Datum* datum = static_cast<Part::Datum*>(ref);
upToFace = TopoDS::Face(datum->getShape());
return;
}
if (!ref->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
throw Base::TypeError("SketchBased: Up to face: Must be face of a feature");
Part::TopoShape baseShape = static_cast<Part::Feature*>(ref)->Shape.getShape();
if (subStrings.empty() || subStrings[0].empty())
throw Base::ValueError("SketchBased: Up to face: No face selected");
// TODO: Check for multiple UpToFaces?
upToFace = TopoDS::Face(baseShape.getSubShape(subStrings[0].c_str()));
if (upToFace.IsNull())
throw Base::ValueError("SketchBased: Up to face: Failed to extract face");
}
void OCCSurface::set_TopoDS_Face(TopoDS_Face& face)
{
if(face.IsEqual(*myTopoDSFace))
return;
TopoDS_Face* face_ptr = new TopoDS_Face(face);
if(myTopoDSFace)
delete (TopoDS_Face*)myTopoDSFace;
myTopoDSFace = face_ptr ;
}
// Note: We cannot return a reference, because it will become Null.
// Not clear where, because we check for IsNull() here, but as soon as it is passed out of
// this method, it becomes null!
const TopoDS_Face ProfileBased::getSupportFace() const {
const Part::Part2DObject* sketch = getVerifiedSketch();
if (sketch->MapMode.getValue() == Attacher::mmFlatFace && sketch->Support.getValue()) {
const auto &Support = sketch->Support;
App::DocumentObject* ref = Support.getValue();
Part::Feature *part = static_cast<Part::Feature*>(ref);
if (part && part->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
const std::vector<std::string> &sub = Support.getSubValues();
assert(sub.size()==1);
if (sub.at(0) == "") {
// This seems to happen when sketch is on a datum plane
return TopoDS::Face(Feature::makeShapeFromPlane(sketch));
}
// get the selected sub shape (a Face)
const Part::TopoShape &shape = part->Shape.getShape();
if (shape.getShape().IsNull())
throw Base::ValueError("Sketch support shape is empty!");
TopoDS_Shape sh = shape.getSubShape(sub[0].c_str());
if (sh.IsNull())
throw Base::ValueError("Null shape in SketchBased::getSupportFace()!");
const TopoDS_Face face = TopoDS::Face(sh);
if (face.IsNull())
throw Base::ValueError("Null face in SketchBased::getSupportFace()!");
BRepAdaptor_Surface adapt(face);
if (adapt.GetType() != GeomAbs_Plane)
throw Base::TypeError("No planar face in SketchBased::getSupportFace()!");
return face;
}
}
return TopoDS::Face(Feature::makeShapeFromPlane(sketch));
}
//=======================================================================
// function: CopyFace
// purpose:
//=======================================================================
void GEOMAlgo_Tools3D::CopyFace (const TopoDS_Face& theF1,
TopoDS_Face& theF2)
{
Standard_Real aTol;
TopLoc_Location aLoc;
TopAbs_Orientation aOr;
TopoDS_Iterator aIt;
BRep_Builder aBB;
//
Handle(Geom_Surface) aSurface=BRep_Tool::Surface(theF1, aLoc);
aTol=BRep_Tool::Tolerance(theF1);
aOr=theF1.Orientation();
//
aBB.MakeFace (theF2, aSurface, aLoc, aTol);
theF2.Orientation(aOr);
//
aIt.Initialize(theF1);
for (; aIt.More(); aIt.Next()) {
const TopoDS_Shape& aW=aIt.Value();
aBB.Add(theF2, aW);
}
}
TopoDS_Face FaceTypedCylinder::buildFace(const FaceVectorType &faces) const
{
std::vector<EdgeVectorType> boundaries;
boundarySplit(faces, boundaries);
static TopoDS_Face dummy;
if (boundaries.size() < 1)
return dummy;
//take one face and remove all the wires.
TopoDS_Face workFace = faces.at(0);
ShapeBuild_ReShape reshaper;
TopExp_Explorer it;
for (it.Init(workFace, TopAbs_WIRE); it.More(); it.Next())
reshaper.Remove(it.Current());
workFace = TopoDS::Face(reshaper.Apply(workFace));
if (workFace.IsNull())
return TopoDS_Face();
ShapeFix_Face faceFixer(workFace);
//makes wires
std::vector<EdgeVectorType>::iterator boundaryIt;
for (boundaryIt = boundaries.begin(); boundaryIt != boundaries.end(); ++boundaryIt)
{
BRepLib_MakeWire wireMaker;
EdgeVectorType::iterator it;
for (it = (*boundaryIt).begin(); it != (*boundaryIt).end(); ++it)
wireMaker.Add(*it);
if (wireMaker.Error() != BRepLib_WireDone)
continue;
faceFixer.Add(wireMaker.Wire());
}
if (faceFixer.Perform() > ShapeExtend_DONE5)
return TopoDS_Face();
faceFixer.FixOrientation();
if (faceFixer.Perform() > ShapeExtend_DONE5)
return TopoDS_Face();
return faceFixer.Face();
}
const gp_Pnt Feature::getPointFromFace(const TopoDS_Face& f)
{
if (!f.Infinite()) {
TopExp_Explorer exp;
exp.Init(f, TopAbs_VERTEX);
if (exp.More())
return BRep_Tool::Pnt(TopoDS::Vertex(exp.Current()));
// Else try the other method
}
// TODO: Other method, e.g. intersect X,Y,Z axis with the (unlimited?) face?
// Or get a "corner" point if the face is limited?
throw Base::Exception("getPointFromFace(): Not implemented yet for this case");
}
gp_Vec normalToFaceAtUV(const TopoDS_Face& face, double u, double v)
{
BRepLProp_SLProps localSurfaceProps(1, 1e-6);
localSurfaceProps.SetSurface(BRepAdaptor_Surface(face));
localSurfaceProps.SetParameters(u, v);
if (localSurfaceProps.IsNormalDefined()) {
const gp_Dir& nc = localSurfaceProps.Normal();
if (face.Orientation() == TopAbs_REVERSED)
return gp_Vec(-nc.X(), -nc.Y(), -nc.Z());
else
return gp_Vec(nc.X(), nc.Y(), nc.Z());
}
return gp_Vec(0., 0., 1.);
//return normalToSurfaceAtUV(BRep_Tool::Surface(face), u, v);
}
//=======================================================================
//function : SamePnt2d
//purpose :
//=======================================================================
static Standard_Boolean SamePnt2d(TopoDS_Vertex V,
TopoDS_Edge& E1,
TopoDS_Edge& E2,
TopoDS_Face& F)
{
Standard_Real f1,f2,l1,l2;
gp_Pnt2d P1,P2;
TopoDS_Shape aLocalF = F.Oriented(TopAbs_FORWARD);
TopoDS_Face FF = TopoDS::Face(aLocalF);
Handle(Geom2d_Curve) C1 = BRep_Tool::CurveOnSurface(E1,FF,f1,l1);
Handle(Geom2d_Curve) C2 = BRep_Tool::CurveOnSurface(E2,FF,f2,l2);
if (E1.Orientation () == TopAbs_FORWARD) P1 = C1->Value(f1);
else P1 = C1->Value(l1);
if (E2.Orientation () == TopAbs_FORWARD) P2 = C2->Value(l2);
else P2 = C2->Value(f2);
Standard_Real Tol = 100*BRep_Tool::Tolerance(V);
Standard_Real Dist = P1.Distance(P2);
return Dist < Tol;
}
int convert_to_ifc(const TopoDS_Face& f, IfcSchema::IfcFace*& face, bool advanced) {
Handle_Geom_Surface surf = BRep_Tool::Surface(f);
TopExp_Explorer exp(f, TopAbs_WIRE);
IfcSchema::IfcFaceBound::list::ptr bounds(new IfcSchema::IfcFaceBound::list);
int index = 0;
for (; exp.More(); exp.Next(), ++index) {
IfcSchema::IfcLoop* loop;
if (!convert_to_ifc(TopoDS::Wire(exp.Current()), loop, advanced)) {
return 0;
}
IfcSchema::IfcFaceBound* bnd;
if (index == 0) {
bnd = new IfcSchema::IfcFaceOuterBound(loop, true);
} else {
bnd = new IfcSchema::IfcFaceBound(loop, true);
}
bounds->push(bnd);
}
const bool is_planar = surf->DynamicType() == STANDARD_TYPE(Geom_Plane);
if (!is_planar && !advanced) {
return 0;
}
if (is_planar && !advanced) {
face = new IfcSchema::IfcFace(bounds);
return 1;
} else {
#ifdef USE_IFC4
IfcSchema::IfcSurface* surface;
if (!convert_to_ifc(surf, surface, advanced)) {
return 0;
}
face = new IfcSchema::IfcAdvancedFace(bounds, surface, f.Orientation() == TopAbs_FORWARD);
return 1;
#else
// No IfcAdvancedFace in Ifc2x3
return 0;
#endif
}
}
App::DocumentObjectExecReturn *Draft::execute(void)
{
// Get parameters
// Base shape
Part::TopoShape TopShape;
try {
TopShape = getBaseShape();
} catch (Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
// Faces where draft should be applied
// Note: Cannot be const reference currently because of BRepOffsetAPI_DraftAngle::Remove() bug, see below
std::vector<std::string> SubVals = Base.getSubValuesStartsWith("Face");
if (SubVals.size() == 0)
return new App::DocumentObjectExecReturn("No faces specified");
// Draft angle
double angle = Angle.getValue() / 180.0 * M_PI;
// Pull direction
gp_Dir pullDirection;
App::DocumentObject* refDirection = PullDirection.getValue();
if (refDirection != NULL) {
if (refDirection->getTypeId().isDerivedFrom(PartDesign::Line::getClassTypeId())) {
PartDesign::Line* line = static_cast<PartDesign::Line*>(refDirection);
Base::Vector3d d = line->getDirection();
pullDirection = gp_Dir(d.x, d.y, d.z);
} else if (refDirection->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
std::vector<std::string> subStrings = PullDirection.getSubValues();
if (subStrings.empty() || subStrings[0].empty())
throw Base::Exception("No pull direction reference specified");
Part::Feature* refFeature = static_cast<Part::Feature*>(refDirection);
Part::TopoShape refShape = refFeature->Shape.getShape();
TopoDS_Shape ref = refShape.getSubShape(subStrings[0].c_str());
if (ref.ShapeType() == TopAbs_EDGE) {
TopoDS_Edge refEdge = TopoDS::Edge(ref);
if (refEdge.IsNull())
throw Base::Exception("Failed to extract pull direction reference edge");
BRepAdaptor_Curve adapt(refEdge);
if (adapt.GetType() != GeomAbs_Line)
throw Base::Exception("Pull direction reference edge must be linear");
pullDirection = adapt.Line().Direction();
} else {
throw Base::Exception("Pull direction reference must be an edge or a datum line");
}
} else {
throw Base::Exception("Pull direction reference must be an edge of a feature or a datum line");
}
TopLoc_Location invObjLoc = this->getLocation().Inverted();
pullDirection.Transform(invObjLoc.Transformation());
}
// Neutral plane
gp_Pln neutralPlane;
App::DocumentObject* refPlane = NeutralPlane.getValue();
if (refPlane == NULL) {
// Try to guess a neutral plane from the first selected face
// Get edges of first selected face
TopoDS_Shape face = TopShape.getSubShape(SubVals[0].c_str());
TopTools_IndexedMapOfShape mapOfEdges;
TopExp::MapShapes(face, TopAbs_EDGE, mapOfEdges);
bool found = false;
for (int i = 1; i <= mapOfEdges.Extent(); i++) {
// Note: What happens if mapOfEdges(i) is the degenerated edge of a cone?
// But in that case the draft is not possible anyway!
BRepAdaptor_Curve c(TopoDS::Edge(mapOfEdges(i)));
gp_Pnt p1 = c.Value(c.FirstParameter());
gp_Pnt p2 = c.Value(c.LastParameter());
if (c.IsClosed()) {
// Edge is a circle or a circular arc (other types are not allowed for drafting)
neutralPlane = gp_Pln(p1, c.Circle().Axis().Direction());
found = true;
break;
} else {
// Edge is linear
// Find midpoint of edge and create auxiliary plane through midpoint normal to edge
gp_Pnt pm = c.Value((c.FirstParameter() + c.LastParameter()) / 2.0);
Handle(Geom_Plane) aux = new Geom_Plane(pm, gp_Dir(p2.X() - p1.X(), p2.Y() - p1.Y(), p2.Z() - p1.Z()));
// Intersect plane with face. Is there no easier way?
BRepAdaptor_Surface adapt(TopoDS::Face(face), Standard_False);
Handle(Geom_Surface) sf = adapt.Surface().Surface();
GeomAPI_IntSS intersector(aux, sf, Precision::Confusion());
if (!intersector.IsDone())
continue;
Handle(Geom_Curve) icurve = intersector.Line(1);
if (!icurve->IsKind(STANDARD_TYPE(Geom_Line)))
continue;
// TODO: How to extract the line from icurve without creating an edge first?
TopoDS_Edge edge = BRepBuilderAPI_MakeEdge(icurve);
BRepAdaptor_Curve c(edge);
neutralPlane = gp_Pln(pm, c.Line().Direction());
found = true;
break;
}
}
if (!found)
throw Base::Exception("No neutral plane specified and none can be guessed");
} else {
if (refPlane->getTypeId().isDerivedFrom(PartDesign::Plane::getClassTypeId())) {
PartDesign::Plane* plane = static_cast<PartDesign::Plane*>(refPlane);
Base::Vector3d b = plane->getBasePoint();
Base::Vector3d n = plane->getNormal();
neutralPlane = gp_Pln(gp_Pnt(b.x, b.y, b.z), gp_Dir(n.x, n.y, n.z));
} else if (refPlane->getTypeId().isDerivedFrom(App::Plane::getClassTypeId())) {
neutralPlane = Feature::makePlnFromPlane(refPlane);
} else if (refPlane->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
std::vector<std::string> subStrings = NeutralPlane.getSubValues();
if (subStrings.empty() || subStrings[0].empty())
throw Base::Exception("No neutral plane reference specified");
Part::Feature* refFeature = static_cast<Part::Feature*>(refPlane);
Part::TopoShape refShape = refFeature->Shape.getShape();
TopoDS_Shape ref = refShape.getSubShape(subStrings[0].c_str());
if (ref.ShapeType() == TopAbs_FACE) {
TopoDS_Face refFace = TopoDS::Face(ref);
if (refFace.IsNull())
throw Base::Exception("Failed to extract neutral plane reference face");
BRepAdaptor_Surface adapt(refFace);
if (adapt.GetType() != GeomAbs_Plane)
throw Base::Exception("Neutral plane reference face must be planar");
neutralPlane = adapt.Plane();
} else if (ref.ShapeType() == TopAbs_EDGE) {
if (refDirection != NULL) {
// Create neutral plane through edge normal to pull direction
TopoDS_Edge refEdge = TopoDS::Edge(ref);
if (refEdge.IsNull())
throw Base::Exception("Failed to extract neutral plane reference edge");
BRepAdaptor_Curve c(refEdge);
if (c.GetType() != GeomAbs_Line)
throw Base::Exception("Neutral plane reference edge must be linear");
double a = c.Line().Angle(gp_Lin(c.Value(c.FirstParameter()), pullDirection));
if (std::fabs(a - M_PI_2) > Precision::Confusion())
throw Base::Exception("Neutral plane reference edge must be normal to pull direction");
neutralPlane = gp_Pln(c.Value(c.FirstParameter()), pullDirection);
} else {
throw Base::Exception("Neutral plane reference can only be an edge if pull direction is defined");
}
} else {
throw Base::Exception("Neutral plane reference must be a face");
}
} else {
throw Base::Exception("Neutral plane reference must be face of a feature or a datum plane");
}
TopLoc_Location invObjLoc = this->getLocation().Inverted();
neutralPlane.Transform(invObjLoc.Transformation());
}
if (refDirection == NULL) {
// Choose pull direction normal to neutral plane
pullDirection = neutralPlane.Axis().Direction();
}
// Reversed pull direction
bool reversed = Reversed.getValue();
if (reversed)
angle *= -1.0;
this->positionByBaseFeature();
// create an untransformed copy of the base shape
Part::TopoShape baseShape(TopShape);
baseShape.setTransform(Base::Matrix4D());
try {
BRepOffsetAPI_DraftAngle mkDraft;
// Note:
// LocOpe_SplitDrafts can split a face with a wire and apply draft to both parts
// Not clear though whether the face must have free boundaries
// LocOpe_DPrism can create a stand-alone draft prism. The sketch can only have a single
// wire, though.
// BRepFeat_MakeDPrism requires a support for the operation but will probably support multiple
// wires in the sketch
bool success;
do {
success = true;
mkDraft.Init(baseShape.getShape());
for (std::vector<std::string>::iterator it=SubVals.begin(); it != SubVals.end(); ++it) {
TopoDS_Face face = TopoDS::Face(baseShape.getSubShape(it->c_str()));
// TODO: What is the flag for?
mkDraft.Add(face, pullDirection, angle, neutralPlane);
if (!mkDraft.AddDone()) {
// Note: the function ProblematicShape returns the face on which the error occurred
// Note: mkDraft.Remove() stumbles on a bug in Draft_Modification::Remove() and is
// therefore unusable. See http://forum.freecadweb.org/viewtopic.php?f=10&t=3209&start=10#p25341
// The only solution is to discard mkDraft and start over without the current face
// mkDraft.Remove(face);
Base::Console().Error("Adding face failed on %s. Omitted\n", it->c_str());
success = false;
SubVals.erase(it);
break;
}
}
}
while (!success);
mkDraft.Build();
if (!mkDraft.IsDone())
return new App::DocumentObjectExecReturn("Failed to create draft");
TopoDS_Shape shape = mkDraft.Shape();
if (shape.IsNull())
return new App::DocumentObjectExecReturn("Resulting shape is null");
this->Shape.setValue(getSolid(shape));
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure) {
Handle(Standard_Failure) e = Standard_Failure::Caught();
return new App::DocumentObjectExecReturn(e->GetMessageString());
}
}
//----------------------------------------------------------------
// Function: TopoDS_Shape level function to update the core Surface
// for any movement or Boolean operation of the body.
// Author: Jane Hu
//----------------------------------------------------------------
CubitStatus OCCSurface::update_OCC_entity(TopoDS_Face& old_surface,
TopoDS_Shape& new_surface,
BRepBuilderAPI_MakeShape *op,
TopoDS_Vertex* removed_vertex,
LocOpe_SplitShape* sp)
{
//set the Wires
TopTools_IndexedMapOfShape M, M2;
TopoDS_Shape shape, shape2, shape_edge, shape_vertex;
TopExp::MapShapes(old_surface, TopAbs_WIRE, M);
TopTools_ListOfShape shapes;
BRepFilletAPI_MakeFillet2d* test_op = NULL;
for (int ii=1; ii<=M.Extent(); ii++)
{
TopoDS_Wire wire = TopoDS::Wire(M(ii));
TopTools_ListOfShape shapes;
if(op)
{
test_op = dynamic_cast<BRepFilletAPI_MakeFillet2d*>(op);
if(!test_op)
shapes.Assign(op->Modified(wire));
if(shapes.Extent() == 0)
shapes.Assign(op->Generated(wire));
if(!new_surface.IsNull())
TopExp::MapShapes(new_surface,TopAbs_WIRE, M2);
}
else if(sp)
shapes.Assign(sp->DescendantShapes(wire));
if (shapes.Extent() == 1)
{
shape = shapes.First();
if(M2.Extent() == 1)
{
shape2 = TopoDS::Wire(M2(1));
if(!shape.IsSame(shape2))
shape = shape2;
}
else if(M2.Extent() > 1)
shape.Nullify();
}
else if(shapes.Extent() > 1)
shape.Nullify();
else if(op->IsDeleted(wire) || shapes.Extent() == 0)
{
TopTools_IndexedMapOfShape M_new;
TopExp::MapShapes(new_surface, TopAbs_WIRE, M_new);
if (M_new.Extent()== 1)
shape = M_new(1);
else
shape.Nullify();
}
else
{
shape = wire;
continue;
}
//set curves
BRepTools_WireExplorer Ex;
for(Ex.Init(wire); Ex.More();Ex.Next())
{
TopoDS_Edge edge = Ex.Current();
if(op && !test_op)
{
shapes.Assign(op->Modified(edge));
if(shapes.Extent() == 0)
shapes.Assign(op->Generated(edge));
}
else if(sp)
shapes.Assign(sp->DescendantShapes(edge));
if (shapes.Extent() == 1)
{
//in fillet creating mothod, one edge could generated a face, so check
//it here.
TopAbs_ShapeEnum type = shapes.First().TShape()->ShapeType();
if(type != TopAbs_EDGE)
shape_edge.Nullify();
else
shape_edge = shapes.First();
}
else if (shapes.Extent() > 1)
{
//update all attributes first.
TopTools_ListIteratorOfListOfShape it;
it.Initialize(shapes);
for(; it.More(); it.Next())
{
shape_edge = it.Value();
OCCQueryEngine::instance()->copy_attributes(edge, shape_edge);
}
shape_edge.Nullify();
}
else if (op->IsDeleted(edge))
shape_edge.Nullify();
else if (test_op)
{
if(!test_op->IsModified(edge))
shape_edge = edge;
else
shape_edge = (test_op->Modified(edge)).First();
}
else
shape_edge = edge;
//update vertex
TopoDS_Vertex vertex = Ex.CurrentVertex();
shapes.Clear();
if(test_op)
assert(removed_vertex != NULL);
if(op && ! test_op )
shapes.Assign(op->Modified(vertex));
else if(sp)
shapes.Assign(sp->DescendantShapes(vertex));
if (shapes.Extent() == 1)
shape_vertex = shapes.First();
else if(shapes.Extent() > 1)
{
//update all attributes first.
TopTools_ListIteratorOfListOfShape it;
it.Initialize(shapes);
for(; it.More(); it.Next())
{
shape_vertex = it.Value();
OCCQueryEngine::instance()->copy_attributes(vertex, shape_vertex);
}
shape_vertex.Nullify() ;
}
else if(op->IsDeleted(vertex) || (test_op && vertex.IsSame( *removed_vertex)))
shape_vertex.Nullify() ;
else
shape_vertex = vertex;
if(!vertex.IsSame(shape_vertex) )
OCCQueryEngine::instance()->update_OCC_map(vertex, shape_vertex);
if (!edge.IsSame(shape_edge))
OCCQueryEngine::instance()->update_OCC_map(edge, shape_edge);
}
if (!wire.IsSame(shape))
OCCQueryEngine::instance()->update_OCC_map(wire, shape);
}
double dTOL = OCCQueryEngine::instance()->get_sme_resabs_tolerance();
if (!old_surface.IsSame(new_surface))
{
TopAbs_ShapeEnum shapetype = TopAbs_SHAPE;
if(!new_surface.IsNull())
shapetype = new_surface.TShape()->ShapeType();
if(shapetype == TopAbs_FACE || new_surface.IsNull())
OCCQueryEngine::instance()->update_OCC_map(old_surface, new_surface);
else
{
TopTools_IndexedMapOfShape M;
TopExp::MapShapes(new_surface, TopAbs_FACE, M);
TopoDS_Shape new_shape;
if(M.Extent() == 1)
new_shape = M(1);
else if(M.Extent() > 1)
{
for(int i = 1; i <= M.Extent(); i++)
{
GProp_GProps myProps;
BRepGProp::SurfaceProperties(old_surface, myProps);
double orig_mass = myProps.Mass();
gp_Pnt orig_pnt = myProps.CentreOfMass();
BRepGProp::SurfaceProperties(M(i), myProps);
double after_mass = myProps.Mass();
gp_Pnt after_pnt = myProps.CentreOfMass();
if(fabs(-after_mass + orig_mass) <= dTOL &&
orig_pnt.IsEqual(after_pnt, dTOL))
{
new_shape = M(i);
break;
}
}
}
OCCQueryEngine::instance()->update_OCC_map(old_surface, new_shape);
}
}
return CUBIT_SUCCESS;
}
const std::list<gp_Trsf> LinearPattern::getTransformations(const std::vector<App::DocumentObject*>)
{
std::string stdDirection = StdDirection.getValue();
float distance = Length.getValue();
if (distance < Precision::Confusion())
throw Base::Exception("Pattern length too small");
int occurrences = Occurrences.getValue();
if (occurrences < 2)
throw Base::Exception("At least two occurrences required");
bool reversed = Reversed.getValue();
gp_Dir dir;
double offset = distance / (occurrences - 1);
if (!stdDirection.empty()) {
// Note: The placement code commented out below had the defect of working always on the
// absolute X,Y,Z direction, not on the relative coordinate system of the Body feature.
// It requires positionBySupport() to be called in Transformed::Execute() AFTER
// the call to getTransformations()
// New code thanks to logari81
if (stdDirection == "X") {
//dir = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(1,0,0));
dir = gp_Dir(1,0,0);
} else if (stdDirection == "Y") {
//dir = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,1,0));
dir = gp_Dir(0,1,0);
} else if(stdDirection == "Z") {
//dir = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,0,1));
dir = gp_Dir(0,0,1);
} else {
throw Base::Exception("Invalid direction (must be X, Y or Z)");
}
} else {
App::DocumentObject* refObject = Direction.getValue();
if (refObject == NULL)
throw Base::Exception("No direction specified");
if (!refObject->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
throw Base::Exception("Direction reference must be edge or face of a feature");
std::vector<std::string> subStrings = Direction.getSubValues();
if (subStrings.empty() || subStrings[0].empty())
throw Base::Exception("No direction reference specified");
Part::Feature* refFeature = static_cast<Part::Feature*>(refObject);
Part::TopoShape refShape = refFeature->Shape.getShape();
TopoDS_Shape ref = refShape.getSubShape(subStrings[0].c_str());
if (ref.ShapeType() == TopAbs_FACE) {
TopoDS_Face refFace = TopoDS::Face(ref);
if (refFace.IsNull())
throw Base::Exception("Failed to extract direction plane");
BRepAdaptor_Surface adapt(refFace);
if (adapt.GetType() != GeomAbs_Plane)
throw Base::Exception("Direction face must be planar");
dir = adapt.Plane().Axis().Direction();
//gp_Dir d = adapt.Plane().Axis().Direction();
//dir = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(d.X(), d.Y(), d.Z()));
} else if (ref.ShapeType() == TopAbs_EDGE) {
TopoDS_Edge refEdge = TopoDS::Edge(ref);
if (refEdge.IsNull())
throw Base::Exception("Failed to extract direction edge");
BRepAdaptor_Curve adapt(refEdge);
if (adapt.GetType() != GeomAbs_Line)
throw Base::Exception("Direction edge must be a straight line");
//gp_Dir d = adapt.Line().Direction();
//dir = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(d.X(), d.Y(), d.Z()));
dir = adapt.Line().Direction();
} else {
throw Base::Exception("Direction reference must be edge or face");
}
TopLoc_Location invObjLoc = this->getLocation().Inverted();
dir.Transform(invObjLoc.Transformation());
}
// get the support placement
// TODO: Check for NULL pointer
/*Part::Feature* supportFeature = static_cast<Part::Feature*>(originals.front());
if (supportFeature == NULL)
throw Base::Exception("Cannot work on invalid support shape");
Base::Placement supportPlacement = supportFeature->Placement.getValue();
dir *= supportPlacement;
gp_Vec direction(dir.getDirection().x, dir.getDirection().y, dir.getDirection().z);*/
gp_Vec direction(dir.X(), dir.Y(), dir.Z());
if (reversed)
direction.Reverse();
// Note: The original feature is NOT included in the list of transformations! Therefore
// we start with occurrence number 1, not number 0
std::list<gp_Trsf> transformations;
gp_Trsf trans;
transformations.push_back(trans); // identity transformation
for (int i = 1; i < occurrences; i++) {
trans.SetTranslation(direction * i * offset);
transformations.push_back(trans);
}
return transformations;
}
void ProfileBased::getUpToFace(TopoDS_Face& upToFace,
const TopoDS_Shape& support,
const TopoDS_Face& supportface,
const TopoDS_Shape& sketchshape,
const std::string& method,
const gp_Dir& dir,
const double offset)
{
if ((method == "UpToLast") || (method == "UpToFirst")) {
// Check for valid support object
if (support.IsNull())
throw Base::ValueError("SketchBased: Up to face: No support in Sketch and no base feature!");
std::vector<Part::cutFaces> cfaces = Part::findAllFacesCutBy(support, sketchshape, dir);
if (cfaces.empty())
throw Base::ValueError("SketchBased: Up to face: No faces found in this direction");
// Find nearest/furthest face
std::vector<Part::cutFaces>::const_iterator it, it_near, it_far;
it_near = it_far = cfaces.begin();
for (it = cfaces.begin(); it != cfaces.end(); it++)
if (it->distsq > it_far->distsq)
it_far = it;
else if (it->distsq < it_near->distsq)
it_near = it;
upToFace = (method == "UpToLast" ? it_far->face : it_near->face);
}
// Check whether the face has limits or not. Unlimited faces have no wire
// Note: Datum planes are always unlimited
TopExp_Explorer Ex(upToFace,TopAbs_WIRE);
if (Ex.More()) {
// Remove the limits of the upToFace so that the extrusion works even if sketchshape is larger
// than the upToFace
bool remove_limits = false;
for (Ex.Init(sketchshape,TopAbs_FACE); Ex.More(); Ex.Next()) {
// Get outermost wire of sketch face
TopoDS_Face sketchface = TopoDS::Face(Ex.Current());
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(sketchface);
if (!checkWireInsideFace(outerWire, upToFace, dir)) {
remove_limits = true;
break;
}
}
// It must also be checked that all projected inner wires of the upToFace
// lie outside the sketch shape. If this is not the case then the sketch
// shape is not completely covered by the upToFace. See #0003141
if (!remove_limits) {
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(upToFace);
for (Ex.Init(upToFace, TopAbs_WIRE); Ex.More(); Ex.Next()) {
if (!outerWire.IsSame(Ex.Current())) {
BRepProj_Projection proj(TopoDS::Wire(Ex.Current()), sketchshape, -dir);
if (proj.More()) {
remove_limits = true;
break;
}
}
}
}
if (remove_limits) {
// Note: Using an unlimited face every time gives unnecessary failures for concave faces
TopLoc_Location loc = upToFace.Location();
BRepAdaptor_Surface adapt(upToFace, Standard_False);
// use the placement of the adapter, not of the upToFace
loc = TopLoc_Location(adapt.Trsf());
BRepBuilderAPI_MakeFace mkFace(adapt.Surface().Surface()
#if OCC_VERSION_HEX >= 0x060502
, Precision::Confusion()
#endif
);
if (!mkFace.IsDone())
throw Base::ValueError("SketchBased: Up To Face: Failed to create unlimited face");
upToFace = TopoDS::Face(mkFace.Shape());
upToFace.Location(loc);
}
}
// Check that the upToFace does not intersect the sketch face and
// is not parallel to the extrusion direction (for simplicity, supportface is used instead of sketchshape)
BRepAdaptor_Surface adapt1(TopoDS::Face(supportface));
BRepAdaptor_Surface adapt2(TopoDS::Face(upToFace));
if (adapt2.GetType() == GeomAbs_Plane) {
if (adapt1.Plane().Axis().IsNormal(adapt2.Plane().Axis(), Precision::Confusion()))
throw Base::ValueError("SketchBased: Up to face: Must not be parallel to extrusion direction!");
}
// We must measure from sketchshape, not supportface, here
BRepExtrema_DistShapeShape distSS(sketchshape, upToFace);
if (distSS.Value() < Precision::Confusion())
throw Base::ValueError("SketchBased: Up to face: Must not intersect sketch!");
// Move the face in the extrusion direction
// TODO: For non-planar faces, we could consider offsetting the surface
if (fabs(offset) > Precision::Confusion()) {
if (adapt2.GetType() == GeomAbs_Plane) {
gp_Trsf mov;
mov.SetTranslation(offset * gp_Vec(dir));
TopLoc_Location loc(mov);
upToFace.Move(loc);
} else {
throw Base::TypeError("SketchBased: Up to Face: Offset not supported yet for non-planar faces");
}
}
}
void PovTools::transferToArray(const TopoDS_Face& aFace,gp_Vec** vertices,gp_Vec** vertexnormals, long** cons,int &nbNodesInFace,int &nbTriInFace )
{
TopLoc_Location aLoc;
// doing the meshing and checking the result
//BRepMesh_IncrementalMesh MESH(aFace,fDeflection);
Handle(Poly_Triangulation) aPoly = BRep_Tool::Triangulation(aFace,aLoc);
if (aPoly.IsNull()) {
Base::Console().Log("Empty face trianglutaion\n");
nbNodesInFace =0;
nbTriInFace = 0;
vertices = 0l;
cons = 0l;
return;
}
// getting the transformation of the shape/face
gp_Trsf myTransf;
Standard_Boolean identity = true;
if (!aLoc.IsIdentity()) {
identity = false;
myTransf = aLoc.Transformation();
}
Standard_Integer i;
// getting size and create the array
nbNodesInFace = aPoly->NbNodes();
nbTriInFace = aPoly->NbTriangles();
*vertices = new gp_Vec[nbNodesInFace];
*vertexnormals = new gp_Vec[nbNodesInFace];
for (i=0; i < nbNodesInFace; i++) {
(*vertexnormals)[i]= gp_Vec(0.0,0.0,0.0);
}
*cons = new long[3*(nbTriInFace)+1];
// check orientation
TopAbs_Orientation orient = aFace.Orientation();
// cycling through the poly mesh
const Poly_Array1OfTriangle& Triangles = aPoly->Triangles();
const TColgp_Array1OfPnt& Nodes = aPoly->Nodes();
for (i=1; i<=nbTriInFace; i++) {
// Get the triangle
Standard_Integer N1,N2,N3;
Triangles(i).Get(N1,N2,N3);
// change orientation of the triangles
if ( orient != TopAbs_FORWARD )
{
Standard_Integer tmp = N1;
N1 = N2;
N2 = tmp;
}
gp_Pnt V1 = Nodes(N1);
gp_Pnt V2 = Nodes(N2);
gp_Pnt V3 = Nodes(N3);
// transform the vertices to the place of the face
if (!identity) {
V1.Transform(myTransf);
V2.Transform(myTransf);
V3.Transform(myTransf);
}
// Calculate triangle normal
gp_Vec v1(V1.X(),V1.Y(),V1.Z()),v2(V2.X(),V2.Y(),V2.Z()),v3(V3.X(),V3.Y(),V3.Z());
gp_Vec Normal = (v2-v1)^(v3-v1);
//Standard_Real Area = 0.5 * Normal.Magnitude();
// add the triangle normal to the vertex normal for all points of this triangle
(*vertexnormals)[N1-1] += gp_Vec(Normal.X(),Normal.Y(),Normal.Z());
(*vertexnormals)[N2-1] += gp_Vec(Normal.X(),Normal.Y(),Normal.Z());
(*vertexnormals)[N3-1] += gp_Vec(Normal.X(),Normal.Y(),Normal.Z());
(*vertices)[N1-1].SetX((float)(V1.X()));
(*vertices)[N1-1].SetY((float)(V1.Y()));
(*vertices)[N1-1].SetZ((float)(V1.Z()));
(*vertices)[N2-1].SetX((float)(V2.X()));
(*vertices)[N2-1].SetY((float)(V2.Y()));
(*vertices)[N2-1].SetZ((float)(V2.Z()));
(*vertices)[N3-1].SetX((float)(V3.X()));
(*vertices)[N3-1].SetY((float)(V3.Y()));
(*vertices)[N3-1].SetZ((float)(V3.Z()));
int j = i - 1;
N1--;
N2--;
N3--;
(*cons)[3*j] = N1;
(*cons)[3*j+1] = N2;
(*cons)[3*j+2] = N3;
}
// normalize all vertex normals
for (i=0; i < nbNodesInFace; i++) {
gp_Dir clNormal;
try {
Handle(Geom_Surface) Surface = BRep_Tool::Surface(aFace);
gp_Pnt vertex((*vertices)[i].XYZ());
// gp_Pnt vertex((*vertices)[i][0], (*vertices)[i][1], (*vertices)[i][2]);
GeomAPI_ProjectPointOnSurf ProPntSrf(vertex, Surface);
Standard_Real fU, fV;
ProPntSrf.Parameters(1, fU, fV);
GeomLProp_SLProps clPropOfFace(Surface, fU, fV, 2, gp::Resolution());
clNormal = clPropOfFace.Normal();
gp_Vec temp = clNormal;
//Base::Console().Log("unterschied:%.2f",temp.dot((*vertexnormals)[i]));
if ( temp * (*vertexnormals)[i] < 0 )
temp = -temp;
(*vertexnormals)[i] = temp;
}
catch (...) {
}
(*vertexnormals)[i].Normalize();
}
}
App::DocumentObjectExecReturn *Pad::execute(void)
{
// Validate parameters
double L = Length.getValue();
if ((std::string(Type.getValueAsString()) == "Length") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Length of pad too small");
double L2 = Length2.getValue();
if ((std::string(Type.getValueAsString()) == "TwoLengths") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Second length of pad too small");
Part::Part2DObject* sketch = 0;
std::vector<TopoDS_Wire> wires;
try {
sketch = getVerifiedSketch();
wires = getSketchWires();
} catch (const Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
TopoDS_Shape support;
try {
support = getSupportShape();
} catch (const Base::Exception&) {
// ignore, because support isn't mandatory
support = TopoDS_Shape();
}
// get the Sketch plane
Base::Placement SketchPos = sketch->Placement.getValue();
Base::Rotation SketchOrientation = SketchPos.getRotation();
Base::Vector3d SketchVector(0,0,1);
SketchOrientation.multVec(SketchVector,SketchVector);
this->positionBySketch();
TopLoc_Location invObjLoc = this->getLocation().Inverted();
try {
support.Move(invObjLoc);
gp_Dir dir(SketchVector.x,SketchVector.y,SketchVector.z);
dir.Transform(invObjLoc.Transformation());
TopoDS_Shape sketchshape = makeFace(wires);
if (sketchshape.IsNull())
return new App::DocumentObjectExecReturn("Pad: Creating a face from sketch failed");
sketchshape.Move(invObjLoc);
TopoDS_Shape prism;
std::string method(Type.getValueAsString());
if (method == "UpToFirst" || method == "UpToLast" || method == "UpToFace") {
TopoDS_Face supportface = getSupportFace();
supportface.Move(invObjLoc);
if (Reversed.getValue())
dir.Reverse();
// Find a valid face to extrude up to
TopoDS_Face upToFace;
if (method == "UpToFace") {
getUpToFaceFromLinkSub(upToFace, UpToFace);
upToFace.Move(invObjLoc);
}
getUpToFace(upToFace, support, supportface, sketchshape, method, dir);
// A support object is always required and we need to use BRepFeat_MakePrism
// Problem: For Pocket/UpToFirst (or an equivalent Pocket/UpToFace) the resulting shape is invalid
// because the feature does not add any material. This only happens with the "2" option, though
// Note: It might be possible to pass a shell or a compound containing multiple faces
// as the Until parameter of Perform()
BRepFeat_MakePrism PrismMaker;
PrismMaker.Init(support, sketchshape, supportface, dir, 2, 1);
PrismMaker.Perform(upToFace);
if (!PrismMaker.IsDone())
return new App::DocumentObjectExecReturn("Pad: Up to face: Could not extrude the sketch!");
prism = PrismMaker.Shape();
} else {
generatePrism(prism, sketchshape, method, dir, L, L2,
Midplane.getValue(), Reversed.getValue());
}
if (prism.IsNull())
return new App::DocumentObjectExecReturn("Pad: Resulting shape is empty");
// set the additive shape property for later usage in e.g. pattern
this->AddShape.setValue(prism);
// if the sketch has a support fuse them to get one result object
if (!support.IsNull()) {
// Let's call algorithm computing a fuse operation:
BRepAlgoAPI_Fuse mkFuse(support, prism);
// Let's check if the fusion has been successful
if (!mkFuse.IsDone())
return new App::DocumentObjectExecReturn("Pad: Fusion with support failed");
TopoDS_Shape result = mkFuse.Shape();
// we have to get the solids (fuse sometimes creates compounds)
TopoDS_Shape solRes = this->getSolid(result);
// lets check if the result is a solid
if (solRes.IsNull())
return new App::DocumentObjectExecReturn("Pad: Resulting shape is not a solid");
this->Shape.setValue(solRes);
} else {
this->Shape.setValue(prism);
}
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
if (std::string(e->GetMessageString()) == "TopoDS::Face")
return new App::DocumentObjectExecReturn("Could not create face from sketch.\n"
"Intersecting sketch entities or multiple faces in a sketch are not allowed.");
else
return new App::DocumentObjectExecReturn(e->GetMessageString());
}
catch (Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
}
//=============================================================================
bool NETGENPlugin_Mesher::Compute()
{
#ifdef WNT
netgen::MeshingParameters& mparams = netgen::GlobalMeshingParameters();
#else
netgen::MeshingParameters& mparams = netgen::mparam;
#endif
MESSAGE("Compute with:\n"
" max size = " << mparams.maxh << "\n"
" segments per edge = " << mparams.segmentsperedge);
MESSAGE("\n"
" growth rate = " << mparams.grading << "\n"
" elements per radius = " << mparams.curvaturesafety << "\n"
" second order = " << mparams.secondorder << "\n"
" quad allowed = " << mparams.quad);
SMESH_ComputeErrorPtr error = SMESH_ComputeError::New();
nglib::Ng_Init();
// -------------------------
// Prepare OCC geometry
// -------------------------
netgen::OCCGeometry occgeo;
list< SMESH_subMesh* > meshedSM;
PrepareOCCgeometry( occgeo, _shape, *_mesh, &meshedSM );
// -------------------------
// Generate the mesh
// -------------------------
netgen::Mesh *ngMesh = NULL;
SMESH_Comment comment;
int err = 0;
int nbInitNod = 0;
int nbInitSeg = 0;
int nbInitFac = 0;
// vector of nodes in which node index == netgen ID
vector< SMDS_MeshNode* > nodeVec;
try
{
// ----------------
// compute 1D mesh
// ----------------
// pass 1D simple parameters to NETGEN
if ( _simpleHyp ) {
if ( int nbSeg = _simpleHyp->GetNumberOfSegments() ) {
// nb of segments
mparams.segmentsperedge = nbSeg + 0.1;
mparams.maxh = occgeo.boundingbox.Diam();
mparams.grading = 0.01;
}
else {
// segment length
mparams.segmentsperedge = 1;
mparams.maxh = _simpleHyp->GetLocalLength();
}
}
// let netgen create ngMesh and calculate element size on not meshed shapes
char *optstr = 0;
int startWith = netgen::MESHCONST_ANALYSE;
int endWith = netgen::MESHCONST_ANALYSE;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at MESHCONST_ANALYSE step";
// fill ngMesh with nodes and elements of computed submeshes
err = ! fillNgMesh(occgeo, *ngMesh, nodeVec, meshedSM);
nbInitNod = ngMesh->GetNP();
nbInitSeg = ngMesh->GetNSeg();
nbInitFac = ngMesh->GetNSE();
// compute mesh
if (!err)
{
startWith = endWith = netgen::MESHCONST_MESHEDGES;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at 1D mesh generation";
}
// ---------------------
// compute surface mesh
// ---------------------
if (!err)
{
// pass 2D simple parameters to NETGEN
if ( _simpleHyp ) {
if ( double area = _simpleHyp->GetMaxElementArea() ) {
// face area
mparams.maxh = sqrt(2. * area/sqrt(3.0));
mparams.grading = 0.4; // moderate size growth
}
else {
// length from edges
double length = 0;
TopTools_MapOfShape tmpMap;
for ( TopExp_Explorer exp( _shape, TopAbs_EDGE ); exp.More(); exp.Next() )
if( tmpMap.Add(exp.Current()) )
length += SMESH_Algo::EdgeLength( TopoDS::Edge( exp.Current() ));
if ( ngMesh->GetNSeg() ) {
// we have to multiply length by 2 since for each TopoDS_Edge there
// are double set of NETGEN edges or, in other words, we have to
// divide ngMesh->GetNSeg() on 2.
mparams.maxh = 2*length / ngMesh->GetNSeg();
}
else
mparams.maxh = 1000;
mparams.grading = 0.2; // slow size growth
}
mparams.maxh = min( mparams.maxh, occgeo.boundingbox.Diam()/2 );
ngMesh->SetGlobalH (mparams.maxh);
netgen::Box<3> bb = occgeo.GetBoundingBox();
bb.Increase (bb.Diam()/20);
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparams.grading);
}
// let netgen compute 2D mesh
startWith = netgen::MESHCONST_MESHSURFACE;
endWith = _optimize ? netgen::MESHCONST_OPTSURFACE : netgen::MESHCONST_MESHSURFACE;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at surface mesh generation";
}
// ---------------------
// generate volume mesh
// ---------------------
if (!err && _isVolume)
{
// add ng face descriptors of meshed faces
std::map< int, std::pair<int,int> >::iterator fId_soIds = _faceDescriptors.begin();
for ( ; fId_soIds != _faceDescriptors.end(); ++fId_soIds ) {
int faceID = fId_soIds->first;
int solidID1 = fId_soIds->second.first;
int solidID2 = fId_soIds->second.second;
ngMesh->AddFaceDescriptor (netgen::FaceDescriptor(faceID, solidID1, solidID2, 0));
}
// pass 3D simple parameters to NETGEN
const NETGENPlugin_SimpleHypothesis_3D* simple3d =
dynamic_cast< const NETGENPlugin_SimpleHypothesis_3D* > ( _simpleHyp );
if ( simple3d ) {
if ( double vol = simple3d->GetMaxElementVolume() ) {
// max volume
mparams.maxh = pow( 72, 1/6. ) * pow( vol, 1/3. );
mparams.maxh = min( mparams.maxh, occgeo.boundingbox.Diam()/2 );
}
else {
// length from faces
mparams.maxh = ngMesh->AverageH();
}
// netgen::ARRAY<double> maxhdom;
// maxhdom.SetSize (occgeo.NrSolids());
// maxhdom = mparams.maxh;
// ngMesh->SetMaxHDomain (maxhdom);
ngMesh->SetGlobalH (mparams.maxh);
mparams.grading = 0.4;
ngMesh->CalcLocalH();
}
// let netgen compute 3D mesh
startWith = netgen::MESHCONST_MESHVOLUME;
endWith = _optimize ? netgen::MESHCONST_OPTVOLUME : netgen::MESHCONST_MESHVOLUME;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh()";
}
if (!err && mparams.secondorder > 0)
{
netgen::OCCRefinementSurfaces ref (occgeo);
ref.MakeSecondOrder (*ngMesh);
}
}
catch (netgen::NgException exc)
{
error->myName = err = COMPERR_ALGO_FAILED;
comment << exc.What();
}
int nbNod = ngMesh->GetNP();
int nbSeg = ngMesh->GetNSeg();
int nbFac = ngMesh->GetNSE();
int nbVol = ngMesh->GetNE();
MESSAGE((err ? "Mesh Generation failure" : "End of Mesh Generation") <<
", nb nodes: " << nbNod <<
", nb segments: " << nbSeg <<
", nb faces: " << nbFac <<
", nb volumes: " << nbVol);
// -----------------------------------------------------------
// Feed back the SMESHDS with the generated Nodes and Elements
// -----------------------------------------------------------
SMESHDS_Mesh* meshDS = _mesh->GetMeshDS();
bool isOK = ( !err && (_isVolume ? (nbVol > 0) : (nbFac > 0)) );
if ( true /*isOK*/ ) // get whatever built
{
// map of nodes assigned to submeshes
NCollection_Map<int> pindMap;
// create and insert nodes into nodeVec
nodeVec.resize( nbNod + 1 );
int i;
for (i = nbInitNod+1; i <= nbNod /*&& isOK*/; ++i )
{
const netgen::MeshPoint& ngPoint = ngMesh->Point(i);
SMDS_MeshNode* node = NULL;
bool newNodeOnVertex = false;
TopoDS_Vertex aVert;
if (i-nbInitNod <= occgeo.vmap.Extent())
{
// point on vertex
aVert = TopoDS::Vertex(occgeo.vmap(i-nbInitNod));
SMESHDS_SubMesh * submesh = meshDS->MeshElements(aVert);
if (submesh)
{
SMDS_NodeIteratorPtr it = submesh->GetNodes();
if (it->more())
{
node = const_cast<SMDS_MeshNode*> (it->next());
pindMap.Add(i);
}
}
if (!node)
newNodeOnVertex = true;
}
if (!node)
node = meshDS->AddNode(ngPoint.X(), ngPoint.Y(), ngPoint.Z());
if (!node)
{
MESSAGE("Cannot create a mesh node");
if ( !comment.size() ) comment << "Cannot create a mesh node";
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
nodeVec.at(i) = node;
if (newNodeOnVertex)
{
// point on vertex
meshDS->SetNodeOnVertex(node, aVert);
pindMap.Add(i);
}
}
// create mesh segments along geometric edges
NCollection_Map<Link> linkMap;
for (i = nbInitSeg+1; i <= nbSeg/* && isOK*/; ++i )
{
const netgen::Segment& seg = ngMesh->LineSegment(i);
Link link(seg.p1, seg.p2);
if (linkMap.Contains(link))
continue;
linkMap.Add(link);
TopoDS_Edge aEdge;
int pinds[3] = { seg.p1, seg.p2, seg.pmid };
int nbp = 0;
double param2 = 0;
for (int j=0; j < 3; ++j)
{
int pind = pinds[j];
if (pind <= 0) continue;
++nbp;
double param;
if (j < 2)
{
if (aEdge.IsNull())
{
int aGeomEdgeInd = seg.epgeominfo[j].edgenr;
if (aGeomEdgeInd > 0 && aGeomEdgeInd <= occgeo.emap.Extent())
aEdge = TopoDS::Edge(occgeo.emap(aGeomEdgeInd));
}
param = seg.epgeominfo[j].dist;
param2 += param;
}
else
param = param2 * 0.5;
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aEdge.IsNull())
{
meshDS->SetNodeOnEdge(nodeVec.at(pind), aEdge, param);
pindMap.Add(pind);
}
}
SMDS_MeshEdge* edge;
if (nbp < 3) // second order ?
edge = meshDS->AddEdge(nodeVec.at(pinds[0]), nodeVec.at(pinds[1]));
else
edge = meshDS->AddEdge(nodeVec.at(pinds[0]), nodeVec.at(pinds[1]),
nodeVec.at(pinds[2]));
if (!edge)
{
if ( !comment.size() ) comment << "Cannot create a mesh edge";
MESSAGE("Cannot create a mesh edge");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aEdge.IsNull())
meshDS->SetMeshElementOnShape(edge, aEdge);
}
// create mesh faces along geometric faces
for (i = nbInitFac+1; i <= nbFac/* && isOK*/; ++i )
{
const netgen::Element2d& elem = ngMesh->SurfaceElement(i);
int aGeomFaceInd = elem.GetIndex();
TopoDS_Face aFace;
if (aGeomFaceInd > 0 && aGeomFaceInd <= occgeo.fmap.Extent())
aFace = TopoDS::Face(occgeo.fmap(aGeomFaceInd));
vector<SMDS_MeshNode*> nodes;
for (int j=1; j <= elem.GetNP(); ++j)
{
int pind = elem.PNum(j);
SMDS_MeshNode* node = nodeVec.at(pind);
nodes.push_back(node);
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aFace.IsNull())
{
const netgen::PointGeomInfo& pgi = elem.GeomInfoPi(j);
meshDS->SetNodeOnFace(node, aFace, pgi.u, pgi.v);
pindMap.Add(pind);
}
}
SMDS_MeshFace* face = NULL;
switch (elem.GetType())
{
case netgen::TRIG:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2]);
break;
case netgen::QUAD:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[3]);
break;
case netgen::TRIG6:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[5],nodes[3],nodes[4]);
break;
case netgen::QUAD8:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[3],
nodes[4],nodes[7],nodes[5],nodes[6]);
break;
default:
MESSAGE("NETGEN created a face of unexpected type, ignoring");
continue;
}
if (!face)
{
if ( !comment.size() ) comment << "Cannot create a mesh face";
MESSAGE("Cannot create a mesh face");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aFace.IsNull())
meshDS->SetMeshElementOnShape(face, aFace);
}
// create tetrahedra
for (i = 1; i <= nbVol/* && isOK*/; ++i)
{
const netgen::Element& elem = ngMesh->VolumeElement(i);
int aSolidInd = elem.GetIndex();
TopoDS_Solid aSolid;
if (aSolidInd > 0 && aSolidInd <= occgeo.somap.Extent())
aSolid = TopoDS::Solid(occgeo.somap(aSolidInd));
vector<SMDS_MeshNode*> nodes;
for (int j=1; j <= elem.GetNP(); ++j)
{
int pind = elem.PNum(j);
SMDS_MeshNode* node = nodeVec.at(pind);
nodes.push_back(node);
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aSolid.IsNull())
{
// point in solid
meshDS->SetNodeInVolume(node, aSolid);
pindMap.Add(pind);
}
}
SMDS_MeshVolume* vol = NULL;
switch (elem.GetType())
{
case netgen::TET:
vol = meshDS->AddVolume(nodes[0],nodes[1],nodes[2],nodes[3]);
break;
case netgen::TET10:
vol = meshDS->AddVolume(nodes[0],nodes[1],nodes[2],nodes[3],
nodes[4],nodes[7],nodes[5],nodes[6],nodes[8],nodes[9]);
break;
default:
MESSAGE("NETGEN created a volume of unexpected type, ignoring");
continue;
}
if (!vol)
{
if ( !comment.size() ) comment << "Cannot create a mesh volume";
MESSAGE("Cannot create a mesh volume");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aSolid.IsNull())
meshDS->SetMeshElementOnShape(vol, aSolid);
}
}
if ( error->IsOK() && ( !isOK || comment.size() > 0 ))
error->myName = COMPERR_ALGO_FAILED;
if ( !comment.empty() )
error->myComment = comment;
// set bad compute error to subshapes of all failed subshapes shapes
if ( !error->IsOK() && err )
{
for (int i = 1; i <= occgeo.fmap.Extent(); i++) {
int status = occgeo.facemeshstatus[i-1];
if (status == 1 ) continue;
if ( SMESH_subMesh* sm = _mesh->GetSubMeshContaining( occgeo.fmap( i ))) {
SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
if ( !smError || smError->IsOK() ) {
if ( status == -1 )
smError.reset( new SMESH_ComputeError( error->myName, error->myComment ));
else
smError.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED, "Ignored" ));
}
}
}
}
nglib::Ng_DeleteMesh((nglib::Ng_Mesh*)ngMesh);
nglib::Ng_Exit();
RemoveTmpFiles();
return error->IsOK();
}
void ShapeGeometryBuilder::edgeConstruct(const TopoDS_Edge &edgeIn)
{
TopoDS_Face face = TopoDS::Face(edgeToFace.FindFromKey(edgeIn).First());
if (face.IsNull())
throw std::runtime_error("face is null in edge construction");
TopLoc_Location location;
Handle(Poly_Triangulation) triangulation;
triangulation = BRep_Tool::Triangulation(face, location);
const Handle(Poly_PolygonOnTriangulation) &segments =
BRep_Tool::PolygonOnTriangulation(edgeIn, triangulation, location);
if (segments.IsNull())
throw std::runtime_error("edge triangulation is null in edge construction");
gp_Trsf transformation;
bool identity = true;
if(!location.IsIdentity())
{
identity = false;
transformation = location.Transformation();
}
const TColStd_Array1OfInteger& indexes = segments->Nodes();
const TColgp_Array1OfPnt& nodes = triangulation->Nodes();
osg::Vec3Array *vertices = dynamic_cast<osg::Vec3Array *>(edgeGeometry->getVertexArray());
osg::Vec4Array *colors = dynamic_cast<osg::Vec4Array *>(edgeGeometry->getColorArray());
osg::ref_ptr<osg::DrawElementsUInt> indices = new osg::DrawElementsUInt
(GL_LINE_STRIP, indexes.Length());
osg::BoundingSphere bSphere;
for (int index(indexes.Lower()); index < indexes.Upper() + 1; ++index)
{
gp_Pnt point = nodes(indexes(index));
if(!identity)
point.Transform(transformation);
vertices->push_back(osg::Vec3(point.X(), point.Y(), point.Z()));
colors->push_back(edgeGeometry->getColor());
(*indices)[index - 1] = vertices->size() - 1;
if (!bSphere.valid()) //for first one.
{
bSphere.center() = vertices->back();
bSphere.radius() = 0.0;
}
else
bSphere.expandBy(vertices->back());
}
edgeGeometry->addPrimitiveSet(indices.get());
boost::uuids::uuid id = seerShape->findShapeIdRecord(edgeIn).id;
std::size_t lastPrimitiveIndex = edgeGeometry->getNumPrimitiveSets() - 1;
if (!idPSetWrapperEdge->hasId(id))
{
IdPSetRecord record;
record.id = id;
record.primitiveSetIndex = lastPrimitiveIndex;
record.bSphere = bSphere;
idPSetWrapperEdge->idPSetContainer.insert(record);
}
else
//ensure that edges have the same primitive index between lod calls.
//asserts here prior to having lod implemented is probably duplicate ids
//for different geometry.
assert(lastPrimitiveIndex == idPSetWrapperEdge->findPSetFromId(id));
}
void ShapeGeometryBuilder::faceConstruct(const TopoDS_Face &faceIn)
{
TopLoc_Location location;
Handle(Poly_Triangulation) triangulation;
triangulation = BRep_Tool::Triangulation(faceIn, location);
if (triangulation.IsNull())
throw std::runtime_error("null triangulation in face construction");
bool signalOrientation(false);
if (faceIn.Orientation() == TopAbs_FORWARD)
signalOrientation = true;
gp_Trsf transformation;
bool identity = true;
if(!location.IsIdentity())
{
identity = false;
transformation = location.Transformation();
}
//vertices.
const TColgp_Array1OfPnt& nodes = triangulation->Nodes();
osg::Vec3Array *vertices = dynamic_cast<osg::Vec3Array *>(faceGeometry->getVertexArray());
osg::Vec3Array *normals = dynamic_cast<osg::Vec3Array *>(faceGeometry->getNormalArray());
osg::Vec4Array *colors = dynamic_cast<osg::Vec4Array *>(faceGeometry->getColorArray());
std::size_t offset = vertices->size();
for (int index(nodes.Lower()); index < nodes.Upper() + 1; ++index)
{
gp_Pnt point = nodes.Value(index);
if(!identity)
point.Transform(transformation);
vertices->push_back(osg::Vec3(point.X(), point.Y(), point.Z()));
normals->push_back(osg::Vec3(0.0, 0.0, 0.0));
colors->push_back(faceGeometry->getColor());
}
const Poly_Array1OfTriangle& triangles = triangulation->Triangles();
osg::ref_ptr<osg::DrawElementsUInt> indices = new osg::DrawElementsUInt
(GL_TRIANGLES, triangulation->NbTriangles() * 3);
for (int index(triangles.Lower()); index < triangles.Upper() + 1; ++index)
{
int N1, N2, N3;
triangles(index).Get(N1, N2, N3);
int factor = (index - 1) * 3;
if (!signalOrientation)
{
(*indices)[factor] = N3 - 1 + offset;
(*indices)[factor + 1] = N2 - 1 + offset;
(*indices)[factor + 2] = N1 - 1 + offset;
}
else
{
(*indices)[factor] = N1 - 1 + offset;
(*indices)[factor + 1] = N2 - 1 + offset;
(*indices)[factor + 2] = N3 - 1 + offset;
}
//store primitiveset index and vertex indes into map.
PSetVertexRecord record;
record.primitiveSetIndex = faceGeometry->getNumPrimitiveSets();
record.vertexIndex = (*indices)[factor];
pSetTriangleWrapper->pSetVertexContainer.insert(record);
record.vertexIndex = (*indices)[factor + 1];
pSetTriangleWrapper->pSetVertexContainer.insert(record);
record.vertexIndex = (*indices)[factor + 2];
pSetTriangleWrapper->pSetVertexContainer.insert(record);
//now that we are combining faces into one geometry, osgUtil SmoothingVisitor
//wants to 'average' out normals across faces. so we go back to manual calculation
//of surface normals.
osg::Vec3 pointOne(vertices->at((*indices)[factor]));
osg::Vec3 pointTwo(vertices->at((*indices)[factor + 1]));
osg::Vec3 pointThree(vertices->at((*indices)[factor + 2]));
osg::Vec3 axisOne(pointTwo - pointOne);
osg::Vec3 axisTwo(pointThree - pointOne);
osg::Vec3 currentNormal(axisOne ^ axisTwo);
if (currentNormal.isNaN())
continue;
currentNormal.normalize();
osg::Vec3 tempNormal;
tempNormal = (*normals)[(*indices)[factor]];
tempNormal += currentNormal;
tempNormal.normalize();
(*normals)[(*indices)[factor]] = tempNormal;
tempNormal = (*normals)[(*indices)[factor + 1]];
tempNormal += currentNormal;
tempNormal.normalize();
(*normals)[(*indices)[factor + 1]] = tempNormal;
tempNormal = (*normals)[(*indices)[factor + 2]];
tempNormal += currentNormal;
tempNormal.normalize();
(*normals)[(*indices)[factor + 2]] = tempNormal;
}
faceGeometry->addPrimitiveSet(indices.get());
boost::uuids::uuid id = seerShape->findShapeIdRecord(faceIn).id;
std::size_t lastPrimitiveIndex = faceGeometry->getNumPrimitiveSets() - 1;
if (!idPSetWrapperFace->hasId(id))
{
IdPSetRecord record;
record.id = id;
record.primitiveSetIndex = lastPrimitiveIndex;
idPSetWrapperFace->idPSetContainer.insert(record);
}
else
//ensure that the faces have the same primitive index between lod calls.
assert(lastPrimitiveIndex == idPSetWrapperFace->findPSetFromId(id));
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcTriangulatedFaceSet* l, TopoDS_Shape& shape) {
IfcSchema::IfcCartesianPointList3D* point_list = l->Coordinates();
const std::vector< std::vector<double> > coordinates = point_list->CoordList();
std::vector<gp_Pnt> points;
points.reserve(coordinates.size());
for (std::vector< std::vector<double> >::const_iterator it = coordinates.begin(); it != coordinates.end(); ++it) {
const std::vector<double>& coords = *it;
if (coords.size() != 3) {
Logger::Message(Logger::LOG_ERROR, "Invalid dimensions encountered on Coordinates", l->entity);
return false;
}
points.push_back(gp_Pnt(coords[0] * getValue(GV_LENGTH_UNIT),
coords[1] * getValue(GV_LENGTH_UNIT),
coords[2] * getValue(GV_LENGTH_UNIT)));
}
std::vector< std::vector<int> > indices = l->CoordIndex();
std::vector<TopoDS_Face> faces;
faces.reserve(indices.size());
for(std::vector< std::vector<int> >::const_iterator it = indices.begin(); it != indices.end(); ++ it) {
const std::vector<int>& tri = *it;
if (tri.size() != 3) {
Logger::Message(Logger::LOG_ERROR, "Invalid dimensions encountered on CoordIndex", l->entity);
return false;
}
const int min_index = *std::min_element(tri.begin(), tri.end());
const int max_index = *std::max_element(tri.begin(), tri.end());
if (min_index < 1 || max_index > points.size()) {
Logger::Message(Logger::LOG_ERROR, "Contents of CoordIndex out of bounds", l->entity);
return false;
}
const gp_Pnt& a = points[tri[0] - 1]; // account for zero- vs
const gp_Pnt& b = points[tri[1] - 1]; // one-based indices in
const gp_Pnt& c = points[tri[2] - 1]; // c++ and express
TopoDS_Wire wire = BRepBuilderAPI_MakePolygon(a, b, c, true).Wire();
TopoDS_Face face = BRepBuilderAPI_MakeFace(wire).Face();
TopoDS_Iterator face_it(face, false);
const TopoDS_Wire& w = TopoDS::Wire(face_it.Value());
const bool reversed = w.Orientation() == TopAbs_REVERSED;
if (reversed) {
face.Reverse();
}
if (face_area(face) > getValue(GV_MINIMAL_FACE_AREA)) {
faces.push_back(face);
}
}
if (faces.empty()) return false;
const unsigned int num_faces = indices.size();
bool valid_shell = false;
if (faces.size() < getValue(GV_MAX_FACES_TO_SEW)) {
BRepOffsetAPI_Sewing builder;
builder.SetTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
builder.SetMaxTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
builder.SetMinTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
for (std::vector<TopoDS_Face>::const_iterator it = faces.begin(); it != faces.end(); ++it) {
builder.Add(*it);
}
try {
builder.Perform();
shape = builder.SewedShape();
valid_shell = BRepCheck_Analyzer(shape).IsValid();
} catch(...) {}
if (valid_shell) {
try {
ShapeFix_Solid solid;
solid.LimitTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
TopoDS_Solid solid_shape = solid.SolidFromShell(TopoDS::Shell(shape));
if (!solid_shape.IsNull()) {
try {
BRepClass3d_SolidClassifier classifier(solid_shape);
shape = solid_shape;
} catch (...) {}
}
} catch(...) {}
} else {
Logger::Message(Logger::LOG_WARNING, "Failed to sew faceset:", l->entity);
}
}
if (!valid_shell) {
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
for (std::vector<TopoDS_Face>::const_iterator it = faces.begin(); it != faces.end(); ++it) {
builder.Add(compound, *it);
}
shape = compound;
}
return true;
}
//=======================================================================
// function: BuildSplitFaces
// purpose:
//=======================================================================
void GEOMAlgo_Builder::BuildSplitFaces()
{
const NMTDS_ShapesDataStructure& aDS=*myPaveFiller->DS();
NMTTools_PaveFiller* pPF=myPaveFiller;
NMTDS_InterfPool* pIP=pPF->IP();
BOPTools_CArray1OfSSInterference& aFFs=pIP->SSInterferences();
const Handle(IntTools_Context)& aCtx= pPF->Context();
//
Standard_Boolean bToReverse, bIsClosed, bIsDegenerated;
Standard_Integer i, aNb, aNbF, nF;
TopTools_MapOfShape aMFence;
TColStd_IndexedMapOfInteger aMFP;
TopExp_Explorer anExp;
TopoDS_Face aFF;
TopoDS_Edge aSp, aEE;
TopTools_ListIteratorOfListOfShape aIt;
TopAbs_Orientation anOriF, anOriE;
//
mySplitFaces.Clear();
//
// 1. Select Faces to process (MFP)
aNb=aDS.NumberOfShapesOfTheObject();
for (i=1; i<=aNb; ++i) {
const TopoDS_Shape& aF=aDS.Shape(i);
if (aF.ShapeType()!=TopAbs_FACE) {
continue;
}
if (!aMFence.Add(aF)) {
continue;
}
//
if (myInParts.Contains(aF)) {
aMFP.Add(i);
continue;
}
//
anExp.Init(aF, TopAbs_EDGE);
for (; anExp.More(); anExp.Next()) {
const TopoDS_Shape& aE=anExp.Current();
if (myImages.HasImage(aE)) {
aMFP.Add(i);
break;
}
}
//
//===
{
Standard_Integer aNbFFs, aNbSE, j, n1, n2;
//
aNbFFs=aFFs.Extent();
for (j=1; j<=aNbFFs; ++j) {
BOPTools_SSInterference& aFFj=aFFs(j);
aFFj.Indices(n1, n2);
if (!(n1==i || n2==i)) {
continue;
}
//
const TColStd_ListOfInteger& aLSE=aFFj.SharedEdges();
aNbSE=aLSE.Extent();
if (aNbSE) {
aMFP.Add(i);
break;
}
}
}
//===
//
}// for (i=1; i<=aNb; ++i)
//
// 2. ProcessFaces
aNbF=aMFP.Extent();
for (i=1; i<=aNbF; ++i) {
nF=aMFP(i);
const TopoDS_Face& aF=TopoDS::Face(aDS.Shape(nF));
anOriF=aF.Orientation();
aFF=aF;
aFF.Orientation(TopAbs_FORWARD);
//
aMFence.Clear();
//
// 2.1. Fill WES
GEOMAlgo_WireEdgeSet aWES;
aWES.SetFace(aFF);
//
// 2.1.1. Add Split parts
anExp.Init(aFF, TopAbs_EDGE);
for (; anExp.More(); anExp.Next()) {
const TopoDS_Edge& aE=TopoDS::Edge(anExp.Current());
anOriE=aE.Orientation();
//
if (!myImages.HasImage(aE)) {
if (anOriE==TopAbs_INTERNAL) {
aEE=aE;
aEE.Orientation(TopAbs_FORWARD);
aWES.AddStartElement(aEE);
aEE.Orientation(TopAbs_REVERSED);
aWES.AddStartElement(aEE);
}
else {
aWES.AddStartElement(aE);
}
continue;
}
//
bIsDegenerated=BRep_Tool::Degenerated(aE);
//modified by NIZNHY-PKV Wed Mar 07 07:46:09 2012f
bIsClosed=IsClosed(aE, aF);
//bIsClosed=BRep_Tool::IsClosed(aE, aF);
//modified by NIZNHY-PKV Wed Mar 07 07:46:13 2012t
//
const TopTools_ListOfShape& aLIE=myImages.Image(aE);
aIt.Initialize(aLIE);
for (; aIt.More(); aIt.Next()) {
aSp=TopoDS::Edge(aIt.Value());
//
if (bIsDegenerated) {
aSp.Orientation(anOriE);
aWES.AddStartElement(aSp);
continue;
}
//
if (anOriE==TopAbs_INTERNAL) {
aSp.Orientation(TopAbs_FORWARD);
aWES.AddStartElement(aSp);
aSp.Orientation(TopAbs_REVERSED);
aWES.AddStartElement(aSp);
continue;
}
//
if (bIsClosed){
if (aMFence.Add(aSp)) {
//
if (!BRep_Tool::IsClosed(aSp, aF)){
BOPTools_Tools3D::DoSplitSEAMOnFace(aSp, aF);
}
//
aSp.Orientation(TopAbs_FORWARD);
aWES.AddStartElement(aSp);
aSp.Orientation(TopAbs_REVERSED);
aWES.AddStartElement(aSp);
}
continue;
}// if (aMFence.Add(aSp))
//
aSp.Orientation(anOriE);
bToReverse=BOPTools_Tools3D::IsSplitToReverse1(aSp, aE, aCtx);
if (bToReverse) {
aSp.Reverse();
}
aWES.AddStartElement(aSp);
}// for (; aIt.More(); aIt.Next()) {
}// for (; anExp.More(); anExp.Next()) {
//
// 2.1.2. Add In2D Parts
if (myInParts.Contains(aF)) {
const TopTools_ListOfShape& aLE=myInParts.FindFromKey(aF);
aIt.Initialize(aLE);
for (; aIt.More(); aIt.Next()) {
aSp=TopoDS::Edge(aIt.Value());
//
aSp.Orientation(TopAbs_FORWARD);
aWES.AddStartElement(aSp);
//
aSp.Orientation(TopAbs_REVERSED);
aWES.AddStartElement(aSp);
}
}
//
// 2.2. Build images Faces
TopTools_ListOfShape aLFR;
GEOMAlgo_ShapeSet aS1, aS2;
//
const TopTools_ListOfShape& aSE=aWES.StartElements();
aS1.Add(aSE);
aS2.Add(aFF, TopAbs_EDGE);
if (aS1.IsEqual(aS2)) {
aLFR.Append(aF);
}
else {
GEOMAlgo_BuilderFace aBF;
//
aBF.SetFace(aFF);
aBF.SetContext(aCtx);
aBF.SetShapes(aSE);
// <-DEB
aBF.Perform();
//
const TopTools_ListOfShape& aLF=aBF.Areas();
aIt.Initialize(aLF);
for (; aIt.More(); aIt.Next()) {
TopoDS_Shape& aFR=aIt.Value();
if (anOriF==TopAbs_REVERSED) {
aFR.Orientation(TopAbs_REVERSED);
}
aLFR.Append(aFR);
}
}
//
// 2.3. Collect draft images Faces
mySplitFaces.Bind(aF, aLFR);
}//for (i=1; i<=aNbF; ++i)
}
App::DocumentObjectExecReturn *DrawViewSection::execute(void)
{
App::DocumentObject* link = Source.getValue();
App::DocumentObject* base = BaseView.getValue();
if (!link || !base) {
Base::Console().Log("INFO - DVS::execute - No Source or Link - creation?\n");
return DrawView::execute();
}
if (!link->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
return new App::DocumentObjectExecReturn("Source object is not a Part object");
if (!base->getTypeId().isDerivedFrom(TechDraw::DrawViewPart::getClassTypeId()))
return new App::DocumentObjectExecReturn("BaseView object is not a DrawViewPart object");
//Base::Console().Message("TRACE - DVS::execute() - %s/%s\n",getNameInDocument(),Label.getValue());
const Part::TopoShape &partTopo = static_cast<Part::Feature*>(link)->Shape.getShape();
if (partTopo.getShape().IsNull())
return new App::DocumentObjectExecReturn("Linked shape object is empty");
(void) DrawView::execute(); //make sure Scale is up to date
gp_Pln pln = getSectionPlane();
gp_Dir gpNormal = pln.Axis().Direction();
Base::Vector3d orgPnt = SectionOrigin.getValue();
Base::BoundBox3d bb = partTopo.getBoundBox();
if(!isReallyInBox(orgPnt, bb)) {
Base::Console().Warning("DVS: Section Plane doesn't intersect part in %s\n",getNameInDocument());
Base::Console().Warning("DVS: Using center of bounding box.\n");
orgPnt = bb.GetCenter();
SectionOrigin.setValue(orgPnt);
}
// Make the extrusion face
double dMax = bb.CalcDiagonalLength();
BRepBuilderAPI_MakeFace mkFace(pln, -dMax,dMax,-dMax,dMax);
TopoDS_Face aProjFace = mkFace.Face();
if(aProjFace.IsNull())
return new App::DocumentObjectExecReturn("DrawViewSection - Projected face is NULL");
gp_Vec extrudeDir = dMax * gp_Vec(gpNormal);
TopoDS_Shape prism = BRepPrimAPI_MakePrism(aProjFace, extrudeDir, false, true).Shape();
// We need to copy the shape to not modify the BRepstructure
BRepBuilderAPI_Copy BuilderCopy(partTopo.getShape());
TopoDS_Shape myShape = BuilderCopy.Shape();
BRepAlgoAPI_Cut mkCut(myShape, prism);
if (!mkCut.IsDone())
return new App::DocumentObjectExecReturn("Section cut has failed");
TopoDS_Shape rawShape = mkCut.Shape();
Bnd_Box testBox;
BRepBndLib::Add(rawShape, testBox);
testBox.SetGap(0.0);
if (testBox.IsVoid()) { //prism & input don't intersect. rawShape is garbage, don't bother.
Base::Console().Log("INFO - DVS::execute - prism & input don't intersect\n");
return DrawView::execute();
}
gp_Pnt inputCenter;
try {
inputCenter = TechDrawGeometry::findCentroid(rawShape,
Direction.getValue());
TopoDS_Shape mirroredShape = TechDrawGeometry::mirrorShape(rawShape,
inputCenter,
Scale.getValue());
geometryObject = buildGeometryObject(mirroredShape,inputCenter); //this is original shape after cut by section prism
#if MOD_TECHDRAW_HANDLE_FACES
extractFaces();
#endif //#if MOD_TECHDRAW_HANDLE_FACES
}
catch (Standard_Failure) {
Handle_Standard_Failure e1 = Standard_Failure::Caught();
Base::Console().Log("LOG - DVS::execute - base shape failed for %s - %s **\n",getNameInDocument(),e1->GetMessageString());
return new App::DocumentObjectExecReturn(e1->GetMessageString());
}
try {
TopoDS_Compound sectionCompound = findSectionPlaneIntersections(rawShape);
TopoDS_Shape mirroredSection = TechDrawGeometry::mirrorShape(sectionCompound,
inputCenter,
Scale.getValue());
TopoDS_Compound newFaces;
BRep_Builder builder;
builder.MakeCompound(newFaces);
TopExp_Explorer expl(mirroredSection, TopAbs_FACE);
for (; expl.More(); expl.Next()) {
const TopoDS_Face& face = TopoDS::Face(expl.Current());
TopoDS_Face pFace = projectFace(face,
inputCenter,
Direction.getValue());
if (!pFace.IsNull()) {
builder.Add(newFaces,pFace);
}
}
sectionFaces = newFaces;
}
catch (Standard_Failure) {
Handle_Standard_Failure e2 = Standard_Failure::Caught();
Base::Console().Log("LOG - DVS::execute - failed building section faces for %s - %s **\n",getNameInDocument(),e2->GetMessageString());
return new App::DocumentObjectExecReturn(e2->GetMessageString());
}
return App::DocumentObject::StdReturn;
}
void VisualSceneOCCGeometry :: BuildScene (int zoomall)
{
if (occgeometry -> changed == OCCGEOMETRYVISUALIZATIONFULLCHANGE)
{
occgeometry -> BuildVisualizationMesh (vispar.occdeflection);
center = occgeometry -> Center();
rad = occgeometry -> GetBoundingBox().Diam() / 2;
if (vispar.occzoomtohighlightedentity)
{
bool hilite = false;
bool hiliteonepoint = false;
Bnd_Box bb;
for (int i = 1; i <= occgeometry->fmap.Extent(); i++)
if (occgeometry->fvispar[i-1].IsHighlighted())
{
hilite = true;
BRepBndLib::Add (occgeometry->fmap(i), bb);
}
for (int i = 1; i <= occgeometry->emap.Extent(); i++)
if (occgeometry->evispar[i-1].IsHighlighted())
{
hilite = true;
BRepBndLib::Add (occgeometry->emap(i), bb);
}
for (int i = 1; i <= occgeometry->vmap.Extent(); i++)
if (occgeometry->vvispar[i-1].IsHighlighted())
{
hiliteonepoint = true;
BRepBndLib::Add (occgeometry->vmap(i), bb);
}
if (hilite || hiliteonepoint)
{
double x1,y1,z1,x2,y2,z2;
bb.Get (x1,y1,z1,x2,y2,z2);
Point<3> p1 = Point<3> (x1,y1,z1);
Point<3> p2 = Point<3> (x2,y2,z2);
Box<3> boundingbox(p1,p2);
center = boundingbox.Center();
if (hiliteonepoint)
rad = occgeometry -> GetBoundingBox().Diam() / 100;
else
rad = boundingbox.Diam() / 2;
}
}
CalcTransformationMatrices();
}
// Clear lists
for (int i = 1; i <= linelists.Size(); i++)
glDeleteLists (linelists.Elem(i), 1);
linelists.SetSize(0);
for (int i = 1; i <= trilists.Size(); i++)
glDeleteLists (trilists.Elem(i), 1);
trilists.SetSize(0);
// Total wireframe
linelists.Append (glGenLists (1));
glNewList (linelists.Last(), GL_COMPILE);
for (int i = 1; i <= occgeometry->emap.Extent(); i++)
{
TopoDS_Edge edge = TopoDS::Edge(occgeometry->emap(i));
if (BRep_Tool::Degenerated(edge)) continue;
if (occgeometry->evispar[i-1].IsHighlighted()) continue;
Handle(Poly_PolygonOnTriangulation) aEdgePoly;
Handle(Poly_Triangulation) T;
TopLoc_Location aEdgeLoc;
BRep_Tool::PolygonOnTriangulation(edge, aEdgePoly, T, aEdgeLoc);
if(aEdgePoly.IsNull())
{
(*testout) << "visualizing edge " << occgeometry->emap.FindIndex (edge)
<< " without using the occ visualization triangulation" << endl;
double s0, s1;
Handle(Geom_Curve) c = BRep_Tool::Curve(edge, s0, s1);
glBegin (GL_LINE_STRIP);
for (int i = 0; i<=50; i++)
{
gp_Pnt p = c->Value (s0 + i*(s1-s0)/50.0);
glVertex3f (p.X(),p.Y(),p.Z());
}
glEnd ();
continue;
}
int nbnodes = aEdgePoly -> NbNodes();
glBegin (GL_LINE_STRIP);
for (int j = 1; j <= nbnodes; j++)
{
gp_Pnt p = (T -> Nodes())(aEdgePoly->Nodes()(j)).Transformed(aEdgeLoc);
glVertex3f (p.X(), p.Y(), p.Z());
}
glEnd ();
}
glEndList ();
// Highlighted edge list
linelists.Append (glGenLists (1));
glNewList (linelists.Last(), GL_COMPILE);
for (int i = 1; i <= occgeometry->emap.Extent(); i++)
if (occgeometry->evispar[i-1].IsHighlighted())
{
TopoDS_Edge edge = TopoDS::Edge(occgeometry->emap(i));
if (BRep_Tool::Degenerated(edge)) continue;
Handle(Poly_PolygonOnTriangulation) aEdgePoly;
Handle(Poly_Triangulation) T;
TopLoc_Location aEdgeLoc;
BRep_Tool::PolygonOnTriangulation(edge, aEdgePoly, T, aEdgeLoc);
if(aEdgePoly.IsNull())
{
(*testout) << "visualizing edge " << occgeometry->emap.FindIndex (edge)
<< " without using the occ visualization triangulation" << endl;
double s0, s1;
Handle(Geom_Curve) c = BRep_Tool::Curve(edge, s0, s1);
glBegin (GL_LINE_STRIP);
for (int i = 0; i<=50; i++)
{
gp_Pnt p = c->Value (s0 + i*(s1-s0)/50.0);
glVertex3f (p.X(),p.Y(),p.Z());
}
glEnd ();
continue;
}
int nbnodes = aEdgePoly -> NbNodes();
glBegin (GL_LINE_STRIP);
for (int j = 1; j <= nbnodes; j++)
{
gp_Pnt p = (T -> Nodes())(aEdgePoly->Nodes()(j)).Transformed(aEdgeLoc);
glVertex3f (p.X(), p.Y(), p.Z());
}
glEnd ();
}
glEndList ();
// display faces
trilists.Append (glGenLists (1));
glNewList (trilists.Last(), GL_COMPILE);
for (int i = 1; i <= occgeometry->fmap.Extent(); i++)
{
if (!occgeometry->fvispar[i-1].IsVisible()) continue;
glLoadName (i);
float mat_col[4];
mat_col[3] = 1;
TopoDS_Face face = TopoDS::Face(occgeometry->fmap(i));
if (!occgeometry->fvispar[i-1].IsHighlighted())
{
// Philippose - 30/01/2009
// OpenCascade XDE Support
Quantity_Color face_colour;
// Philippose - 23/02/2009
// Check to see if colours have been extracted first!!
// Forum bug-fox (Jean-Yves - 23/02/2009)
if(!(occgeometry->face_colours.IsNull())
&& (occgeometry->face_colours->GetColor(face,XCAFDoc_ColorSurf,face_colour)))
{
mat_col[0] = face_colour.Red();
mat_col[1] = face_colour.Green();
mat_col[2] = face_colour.Blue();
}
else
{
mat_col[0] = 0.0;
mat_col[1] = 1.0;
mat_col[2] = 0.0;
}
}
else
{
mat_col[0] = 0.8;
mat_col[1] = 0.2;
mat_col[2] = 0.2;
}
glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, mat_col);
TopLoc_Location loc;
Handle(Geom_Surface) surf = BRep_Tool::Surface (face);
BRepAdaptor_Surface sf(face, Standard_False);
BRepLProp_SLProps prop(sf, 1, 1e-5);
Handle(Poly_Triangulation) triangulation = BRep_Tool::Triangulation (face, loc);
if (triangulation.IsNull())
{
cout << "cannot visualize face " << i << endl;
occgeometry->fvispar[i-1].SetNotDrawable();
continue;
}
gp_Pnt2d uv;
gp_Pnt pnt;
gp_Vec n;
glBegin (GL_TRIANGLES);
int ntriangles = triangulation -> NbTriangles();
for (int j = 1; j <= ntriangles; j++)
{
Poly_Triangle triangle = (triangulation -> Triangles())(j);
gp_Pnt p[3];
for (int k = 1; k <= 3; k++)
p[k-1] = (triangulation -> Nodes())(triangle(k)).Transformed(loc);
for (int k = 1; k <= 3; k++)
{
uv = (triangulation -> UVNodes())(triangle(k));
prop.SetParameters (uv.X(), uv.Y());
// surf->D0 (uv.X(), uv.Y(), pnt);
if (prop.IsNormalDefined())
n = prop.Normal();
else
{
(*testout) << "Visualization of face " << i
<< ": Normal vector not defined" << endl;
// n = gp_Vec (0,0,0);
gp_Vec a(p[0],p[1]);
gp_Vec b(p[0],p[2]);
n = b^a;
}
if (face.Orientation() == TopAbs_REVERSED) n *= -1;
glNormal3f (n.X(), n.Y(), n.Z());
glVertex3f (p[k-1].X(), p[k-1].Y(), p[k-1].Z());
}
}
glEnd ();
}
glEndList ();
}
bool SMESH_Algo::IsReversedSubMesh (const TopoDS_Face& theFace,
SMESHDS_Mesh* theMeshDS)
{
if ( theFace.IsNull() || !theMeshDS )
return false;
// find out orientation of a meshed face
int faceID = theMeshDS->ShapeToIndex( theFace );
TopoDS_Shape aMeshedFace = theMeshDS->IndexToShape( faceID );
bool isReversed = ( theFace.Orientation() != aMeshedFace.Orientation() );
const SMESHDS_SubMesh * aSubMeshDSFace = theMeshDS->MeshElements( faceID );
if ( !aSubMeshDSFace )
return isReversed;
// find element with node located on face and get its normal
const SMDS_FacePosition* facePos = 0;
int vertexID = 0;
gp_Pnt nPnt[3];
gp_Vec Ne;
bool normalOK = false;
SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
while ( iteratorElem->more() ) // loop on elements on theFace
{
const SMDS_MeshElement* elem = iteratorElem->next();
if ( elem && elem->NbNodes() > 2 ) {
SMDS_ElemIteratorPtr nodesIt = elem->nodesIterator();
const SMDS_FacePosition* fPos = 0;
int i = 0, vID = 0;
while ( nodesIt->more() ) { // loop on nodes
const SMDS_MeshNode* node
= static_cast<const SMDS_MeshNode *>(nodesIt->next());
if ( i == 3 ) i = 2;
nPnt[ i++ ].SetCoord( node->X(), node->Y(), node->Z() );
// check position
const SMDS_PositionPtr& pos = node->GetPosition();
if ( !pos ) continue;
if ( pos->GetTypeOfPosition() == SMDS_TOP_FACE ) {
fPos = dynamic_cast< const SMDS_FacePosition* >( pos.get() );
}
else if ( pos->GetTypeOfPosition() == SMDS_TOP_VERTEX ) {
vID = pos->GetShapeId();
}
}
if ( fPos || ( !normalOK && vID )) {
// compute normal
gp_Vec v01( nPnt[0], nPnt[1] ), v02( nPnt[0], nPnt[2] );
if ( v01.SquareMagnitude() > RealSmall() &&
v02.SquareMagnitude() > RealSmall() )
{
Ne = v01 ^ v02;
normalOK = ( Ne.SquareMagnitude() > RealSmall() );
}
// we need position on theFace or at least on vertex
if ( normalOK ) {
vertexID = vID;
if ((facePos = fPos))
break;
}
}
}
}
if ( !normalOK )
return isReversed;
// node position on face
double u,v;
if ( facePos ) {
u = facePos->GetUParameter();
v = facePos->GetVParameter();
}
else if ( vertexID ) {
TopoDS_Shape V = theMeshDS->IndexToShape( vertexID );
if ( V.IsNull() || V.ShapeType() != TopAbs_VERTEX )
return isReversed;
gp_Pnt2d uv = BRep_Tool::Parameters( TopoDS::Vertex( V ), theFace );
u = uv.X();
v = uv.Y();
}
else
{
return isReversed;
}
// face normal at node position
TopLoc_Location loc;
Handle(Geom_Surface) surf = BRep_Tool::Surface( theFace, loc );
if ( surf.IsNull() || surf->Continuity() < GeomAbs_C1 ) return isReversed;
gp_Vec d1u, d1v;
surf->D1( u, v, nPnt[0], d1u, d1v );
gp_Vec Nf = (d1u ^ d1v).Transformed( loc );
if ( theFace.Orientation() == TopAbs_REVERSED )
Nf.Reverse();
return Ne * Nf < 0.;
}
bool FaceUniter::process()
{
if (workShell.IsNull())
return false;
modifiedShapes.clear();
deletedShapes.clear();
typeObjects.push_back(&getPlaneObject());
typeObjects.push_back(&getCylinderObject());
//add more face types.
ModelRefine::FaceTypeSplitter splitter;
splitter.addShell(workShell);
std::vector<FaceTypedBase *>::iterator typeIt;
for(typeIt = typeObjects.begin(); typeIt != typeObjects.end(); ++typeIt)
splitter.registerType((*typeIt)->getType());
splitter.split();
ModelRefine::FaceVectorType facesToRemove;
ModelRefine::FaceVectorType facesToSew;
ModelRefine::FaceAdjacencySplitter adjacencySplitter(workShell);
for(typeIt = typeObjects.begin(); typeIt != typeObjects.end(); ++typeIt)
{
ModelRefine::FaceVectorType typedFaces = splitter.getTypedFaceVector((*typeIt)->getType());
ModelRefine::FaceEqualitySplitter equalitySplitter;
equalitySplitter.split(typedFaces, *typeIt);
for (std::size_t indexEquality(0); indexEquality < equalitySplitter.getGroupCount(); ++indexEquality)
{
adjacencySplitter.split(equalitySplitter.getGroup(indexEquality));
// std::cout << " adjacency group count: " << adjacencySplitter.getGroupCount() << std::endl;
for (std::size_t adjacentIndex(0); adjacentIndex < adjacencySplitter.getGroupCount(); ++adjacentIndex)
{
// std::cout << " face count is: " << adjacencySplitter.getGroup(adjacentIndex).size() << std::endl;
TopoDS_Face newFace = (*typeIt)->buildFace(adjacencySplitter.getGroup(adjacentIndex));
if (!newFace.IsNull())
{
facesToSew.push_back(newFace);
if (facesToRemove.capacity() <= facesToRemove.size() + adjacencySplitter.getGroup(adjacentIndex).size())
facesToRemove.reserve(facesToRemove.size() + adjacencySplitter.getGroup(adjacentIndex).size());
FaceVectorType temp = adjacencySplitter.getGroup(adjacentIndex);
facesToRemove.insert(facesToRemove.end(), temp.begin(), temp.end());
// the first shape will be marked as modified, i.e. replaced by newFace, all others are marked as deleted
if (!temp.empty())
{
modifiedShapes.push_back(std::make_pair(temp.front(), newFace));
deletedShapes.insert(deletedShapes.end(), temp.begin()+1, temp.end());
}
}
}
}
}
if (facesToSew.size() > 0)
{
modifiedSignal = true;
workShell = ModelRefine::removeFaces(workShell, facesToRemove);
TopExp_Explorer xp;
bool emptyShell = true;
for (xp.Init(workShell, TopAbs_FACE); xp.More(); xp.Next())
{
emptyShell = false;
break;
}
if (!emptyShell || facesToSew.size() > 1)
{
BRepBuilderAPI_Sewing sew;
sew.Add(workShell);
FaceVectorType::iterator sewIt;
for(sewIt = facesToSew.begin(); sewIt != facesToSew.end(); ++sewIt)
sew.Add(*sewIt);
sew.Perform();
workShell = TopoDS::Shell(sew.SewedShape());
// update the list of modifications
for (std::vector<ShapePairType>::iterator it = modifiedShapes.begin(); it != modifiedShapes.end(); ++it)
{
if (sew.IsModified(it->second))
{
it->second = sew.Modified(it->second);
break;
}
}
}
else
{
// workShell has no more faces and we add exactly one face
BRep_Builder builder;
builder.MakeShell(workShell);
FaceVectorType::iterator sewIt;
for(sewIt = facesToSew.begin(); sewIt != facesToSew.end(); ++sewIt)
builder.Add(workShell, *sewIt);
}
BRepLib_FuseEdges edgeFuse(workShell, Standard_True);
TopTools_DataMapOfShapeShape affectedFaces;
edgeFuse.Faces(affectedFaces);
TopTools_DataMapIteratorOfDataMapOfShapeShape mapIt;
for (mapIt.Initialize(affectedFaces); mapIt.More(); mapIt.Next())
{
ShapeFix_Face faceFixer(TopoDS::Face(mapIt.Value()));
faceFixer.Perform();
}
workShell = TopoDS::Shell(edgeFuse.Shape());
// update the list of modifications
TopTools_DataMapOfShapeShape faceMap;
edgeFuse.Faces(faceMap);
for (std::vector<ShapePairType>::iterator it = modifiedShapes.begin(); it != modifiedShapes.end(); ++it)
{
if (faceMap.IsBound(it->second))
{
const TopoDS_Shape& value = faceMap.Find(it->second);
if (!value.IsSame(it->second))
it->second = value;
}
}
}
return true;
}