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- Correctly format REALs according to ISO 10303-21 instead of C++ std::stream double formatting

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- Add the IfcHierarchyHelper to assist in the creation of IFC files
- Add the IfcOpenHouse example for writing topological geometry and tessellated Open Cascade shapes to IFC
This commit is contained in:
Thomas Krijnen
2012-11-04 16:26:33 +00:00
parent db98906643
commit e56281a72e
14 changed files with 1359 additions and 96 deletions
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src/ifcgeom/IfcGeomFunctions.cpp
+70
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@@ -86,6 +86,12 @@
#include <BRepGProp_Face.hxx>
#include <BRepMesh.hxx>
#include <BRepTools.hxx>
#include <Poly_Triangulation.hxx>
#include <Poly_Array1OfTriangle.hxx>
#include "../ifcgeom/IfcGeom.h"
bool IfcGeom::create_solid_from_compound(const TopoDS_Shape& compound, TopoDS_Shape& shape) {
@@ -489,4 +495,68 @@ double IfcGeom::GetValue(GeomValue var) {
}
assert(!"never reach here");
return 0;
}
Ifc2x3::IfcProductDefinitionShape* IfcGeom::tesselate(TopoDS_Shape& shape, double deflection, IfcEntities es) {
BRepMesh::Mesh(shape, deflection);
Ifc2x3::IfcFace::list faces (new IfcTemplatedEntityList<Ifc2x3::IfcFace>());
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<Ifc2x3::IfcCartesianPoint*> vertices;
for (int i = 1; i <= nodes.Length(); ++i) {
const gp_Pnt& pnt = nodes(i);
std::vector<double> xyz; xyz.push_back(pnt.X()); xyz.push_back(pnt.Y()); xyz.push_back(pnt.Z());
Ifc2x3::IfcCartesianPoint* cpnt = new Ifc2x3::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);
Ifc2x3::IfcCartesianPoint::list points (new IfcTemplatedEntityList<Ifc2x3::IfcCartesianPoint>());
points->push(vertices[n1-1]);
points->push(vertices[n2-1]);
points->push(vertices[n3-1]);
Ifc2x3::IfcPolyLoop* loop = new Ifc2x3::IfcPolyLoop(points);
Ifc2x3::IfcFaceOuterBound* bound = new Ifc2x3::IfcFaceOuterBound(loop, face.Orientation() != TopAbs_REVERSED);
Ifc2x3::IfcFaceBound::list bounds (new IfcTemplatedEntityList<Ifc2x3::IfcFaceBound>());
bounds->push(bound);
Ifc2x3::IfcFace* face = new Ifc2x3::IfcFace(bounds);
es->push(loop);
es->push(bound);
es->push(face);
faces->push(face);
}
}
}
Ifc2x3::IfcOpenShell* shell = new Ifc2x3::IfcOpenShell(faces);
Ifc2x3::IfcConnectedFaceSet::list shells (new IfcTemplatedEntityList<Ifc2x3::IfcConnectedFaceSet>());
shells->push(shell);
Ifc2x3::IfcFaceBasedSurfaceModel* surface_model = new Ifc2x3::IfcFaceBasedSurfaceModel(shells);
Ifc2x3::IfcRepresentation::list reps (new IfcTemplatedEntityList<Ifc2x3::IfcRepresentation>());
Ifc2x3::IfcRepresentationItem::list items (new IfcTemplatedEntityList<Ifc2x3::IfcRepresentationItem>());
items->push(surface_model);
Ifc2x3::IfcShapeRepresentation* rep = new Ifc2x3::IfcShapeRepresentation(
0, std::string("Facetation"), std::string("SurfaceModel"), items);
reps->push(rep);
Ifc2x3::IfcProductDefinitionShape* shapedef = new Ifc2x3::IfcProductDefinitionShape(0, 0, reps);
es->push(shell);
es->push(surface_model);
es->push(rep);
es->push(shapedef);
return shapedef;
}