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Geometry serialization (#71)

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Serialize geometry to IFC instances directly from a TopoDS_Shape
This commit is contained in:
Thomas Krijnen
2016-06-22 15:03:18 +02:00
committed by GitHub
parent 90ad3a4a93
commit aebb9e324b
18 changed files with 1161 additions and 206 deletions
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src/ifcgeom/IfcGeomFunctions.cpp
-64
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@@ -720,70 +720,6 @@ double IfcGeom::Kernel::getValue(GeomValue var) const {
return 0;
}
IfcSchema::IfcProductDefinitionShape* IfcGeom::tesselate(TopoDS_Shape& shape, double deflection, IfcEntityList::ptr es) {
BRepMesh_IncrementalMesh(shape, deflection);
IfcSchema::IfcFace::list::ptr faces (new IfcSchema::IfcFace::list);
for (TopExp_Explorer exp(shape, TopAbs_FACE); exp.More(); exp.Next()) {
const TopoDS_Face& face = TopoDS::Face(exp.Current());
TopLoc_Location loc;
Handle(Poly_Triangulation) tri = BRep_Tool::Triangulation(face, loc);
if (! tri.IsNull()) {
const TColgp_Array1OfPnt& nodes = tri->Nodes();
std::vector<IfcSchema::IfcCartesianPoint*> vertices;
for (int i = 1; i <= nodes.Length(); ++i) {
gp_Pnt pnt = nodes(i).Transformed(loc);
std::vector<double> xyz; xyz.push_back(pnt.X()); xyz.push_back(pnt.Y()); xyz.push_back(pnt.Z());
IfcSchema::IfcCartesianPoint* cpnt = new IfcSchema::IfcCartesianPoint(xyz);
vertices.push_back(cpnt);
es->push(cpnt);
}
const Poly_Array1OfTriangle& triangles = tri->Triangles();
for (int i = 1; i <= triangles.Length(); ++ i) {
int n1, n2, n3;
triangles(i).Get(n1, n2, n3);
IfcSchema::IfcCartesianPoint::list::ptr points (new IfcSchema::IfcCartesianPoint::list);
points->push(vertices[n1-1]);
points->push(vertices[n2-1]);
points->push(vertices[n3-1]);
IfcSchema::IfcPolyLoop* loop = new IfcSchema::IfcPolyLoop(points);
IfcSchema::IfcFaceOuterBound* bound = new IfcSchema::IfcFaceOuterBound(loop, face.Orientation() != TopAbs_REVERSED);
IfcSchema::IfcFaceBound::list::ptr bounds (new IfcSchema::IfcFaceBound::list);
bounds->push(bound);
IfcSchema::IfcFace* face2 = new IfcSchema::IfcFace(bounds);
es->push(loop);
es->push(bound);
es->push(face2);
faces->push(face2);
}
}
}
IfcSchema::IfcOpenShell* shell = new IfcSchema::IfcOpenShell(faces);
IfcSchema::IfcConnectedFaceSet::list::ptr shells (new IfcSchema::IfcConnectedFaceSet::list);
shells->push(shell);
IfcSchema::IfcFaceBasedSurfaceModel* surface_model = new IfcSchema::IfcFaceBasedSurfaceModel(shells);
IfcSchema::IfcRepresentation::list::ptr reps (new IfcSchema::IfcRepresentation::list);
IfcSchema::IfcRepresentationItem::list::ptr items (new IfcSchema::IfcRepresentationItem::list);
items->push(surface_model);
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
0, std::string("Facetation"), std::string("SurfaceModel"), items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shapedef = new IfcSchema::IfcProductDefinitionShape(boost::none, boost::none, reps);
es->push(shell);
es->push(surface_model);
es->push(rep);
es->push(shapedef);
return shapedef;
}
// Returns the vertex part of an TopoDS_Edge edge that is not TopoDS_Vertex vertex
TopoDS_Vertex find_other(const TopoDS_Edge& edge, const TopoDS_Vertex& vertex) {
TopExp_Explorer exp(edge, TopAbs_VERTEX);