void create_product_from_item(IfcHierarchyHelper& file, IfcSchema::IfcRepresentationItem* item, const std::string& s) {
IfcSchema::IfcBuildingElementProxy* product = new IfcSchema::IfcBuildingElementProxy(
guid(), 0, S("product"), null, null, 0, 0, null, null);
file.addBuildingProduct(product);
product->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
product->setObjectPlacement(file.addLocalPlacement(120 * i++));
IfcSchema::IfcRepresentation::list reps (new IfcTemplatedEntityList<IfcSchema::IfcRepresentation>());
IfcSchema::IfcRepresentationItem::list items (new IfcTemplatedEntityList<IfcSchema::IfcRepresentationItem>());
items->push(item);
if (s == "GeometricSet") {
IfcSchema::IfcGeometricSet* set = new IfcSchema::IfcGeometricSet(items->generalize());
file.AddEntity(set);
items = IfcSchema::IfcRepresentationItem::list(new IfcTemplatedEntityList<IfcSchema::IfcRepresentationItem>());
items->push(set);
}
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
file.getSingle<IfcSchema::IfcRepresentationContext>(), S("Body"), s, items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(0, 0, reps);
file.AddEntity(rep);
file.AddEntity(shape);
product->setRepresentation(shape);
}
void create_products_from_curve(IfcHierarchyHelper& file, IfcSchema::IfcBoundedCurve* curve) {
IfcSchema::IfcArbitraryOpenProfileDef* open = new IfcSchema::IfcArbitraryOpenProfileDef(IfcSchema::IfcProfileTypeEnum::IfcProfileType_CURVE, null, curve);
IfcSchema::IfcCenterLineProfileDef* center_line = new IfcSchema::IfcCenterLineProfileDef(IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA, null, curve, 10.);
file.AddEntity(open);
file.AddEntity(center_line);
create_surfaces_from_profile(file, open);
create_solids_from_profile(file, center_line);
}
int main()
{
IfcHierarchyHelper file;
file.header().file_name().name("ifc_curve_rebar.ifc");
create_curve_rebar(file);
std::ofstream f("ifc_curve_rebar.ifc");
f << file;
return 0;
}
void create_surfaces_from_profile(IfcHierarchyHelper& file, IfcSchema::IfcProfileDef* profile) {
IfcSchema::IfcSurfaceOfLinearExtrusion* extrusion = new IfcSchema::IfcSurfaceOfLinearExtrusion(profile, file.addPlacement3d(), file.addTriplet<IfcSchema::IfcDirection>(0, 0, 1), 100.);
file.AddEntity(extrusion);
IfcSchema::IfcAxis1Placement* ax1 = new IfcSchema::IfcAxis1Placement(file.addTriplet<IfcSchema::IfcCartesianPoint>(0,100,0), file.addTriplet<IfcSchema::IfcDirection>(1,0,0));
IfcSchema::IfcSurfaceOfRevolution* revolution = new IfcSchema::IfcSurfaceOfRevolution(profile, file.addPlacement3d(), ax1);
file.AddEntity(ax1);
file.AddEntity(revolution);
create_product_from_item(file, extrusion, "GeometricSet");
create_product_from_item(file, revolution, "GeometricSet");
}
void create_solids_from_profile(IfcHierarchyHelper& file, IfcSchema::IfcProfileDef* profile) {
IfcSchema::IfcExtrudedAreaSolid* extrusion = new IfcSchema::IfcExtrudedAreaSolid(profile, file.addPlacement3d(), file.addTriplet<IfcSchema::IfcDirection>(0, 0, 1), 100.);
file.AddEntity(extrusion);
IfcSchema::IfcAxis1Placement* ax1 = new IfcSchema::IfcAxis1Placement(file.addTriplet<IfcSchema::IfcCartesianPoint>(0,100,0), file.addTriplet<IfcSchema::IfcDirection>(1,0,0));
IfcSchema::IfcRevolvedAreaSolid* revolution1 = new IfcSchema::IfcRevolvedAreaSolid(profile, file.addPlacement3d(), ax1, 360.);
IfcSchema::IfcRevolvedAreaSolid* revolution2 = new IfcSchema::IfcRevolvedAreaSolid(profile, file.addPlacement3d(), ax1, 90.);
file.AddEntity(ax1);
file.AddEntity(revolution1);
file.AddEntity(revolution2);
create_product_from_item(file, extrusion, "SweptSolid");
create_product_from_item(file, revolution1, "SweptSolid");
create_product_from_item(file, revolution2, "SweptSolid");
}
int main(int argc, char** argv) {
const char filename[] = "IfcArbitraryOpenProfileDef.ifc";
IfcHierarchyHelper file;
file.filename(filename);
double coords1[] = {-50.0, 0.0};
double coords2[] = { 50.0, 0.0};
IfcSchema::IfcCartesianPoint::list points (new IfcTemplatedEntityList<IfcSchema::IfcCartesianPoint>());
points->push(new IfcSchema::IfcCartesianPoint(std::vector<double>(coords1, coords1+2)));
points->push(new IfcSchema::IfcCartesianPoint(std::vector<double>(coords2, coords2+2)));
file.AddEntities(points->generalize());
IfcSchema::IfcPolyline* poly = new IfcSchema::IfcPolyline(points);
file.AddEntity(poly);
create_products_from_curve(file, poly);
IfcSchema::IfcEllipse* ellipse = new IfcSchema::IfcEllipse(file.addPlacement2d(), 50., 25.);
file.AddEntity(ellipse);
IfcEntities trim1(new IfcEntityList());
IfcEntities trim2(new IfcEntityList());
trim1->push(new IfcWrite::IfcSelectHelper( 0., Ifc2x3::Type::IfcParameterValue));
trim2->push(new IfcWrite::IfcSelectHelper(180., Ifc2x3::Type::IfcParameterValue));
IfcSchema::IfcTrimmedCurve* trim = new IfcSchema::IfcTrimmedCurve(ellipse, trim1, trim2, true, IfcSchema::IfcTrimmingPreference::IfcTrimmingPreference_PARAMETER);
file.AddEntity(trim);
create_products_from_curve(file, trim);
file.getSingle<Ifc2x3::IfcProject>()->setName("IfcArbitraryOpenProfileDef");
std::ofstream f(filename);
f << file;
}
int main(int argc, char** argv) {
IfcHierarchyHelper file;
IfcSchema::IfcBuildingElementProxy* product = new IfcSchema::IfcBuildingElementProxy(
guid(), 0, S("Blender's Suzanne"), null, null, 0, 0, null, null);
file.addBuildingProduct(product);
product->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
product->setObjectPlacement(file.addLocalPlacement());
IfcSchema::IfcRepresentation::list::ptr reps (new IfcSchema::IfcRepresentation::list);
IfcSchema::IfcRepresentationItem::list::ptr items (new IfcSchema::IfcRepresentationItem::list);
std::vector< std::vector< double > > vertices_vector = create_vector_from_array(vertices, sizeof(vertices) / sizeof(vertices[0]));
std::vector< std::vector< int > > indices_vector = create_vector_from_array(indices, sizeof(indices) / sizeof(indices[0]));
IfcSchema::IfcCartesianPointList3D* coordinates = new IfcSchema::IfcCartesianPointList3D(vertices_vector);
IfcSchema::IfcTriangulatedFaceSet* faceset = new IfcSchema::IfcTriangulatedFaceSet(coordinates, null, null, indices_vector, null);
items->push(faceset);
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
file.getRepresentationContext("Model"), S("Body"), S("SurfaceModel"), items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(0, 0, reps);
file.addEntity(shape);
product->setRepresentation(shape);
const std::string filename = "tesselated_faceset.ifc";
file.header().file_name().name(filename);
std::ofstream f(filename.c_str());
f << file;
}
int main(int argc, char** argv) {
const char filename[] = "IfcCompositeProfileDef.ifc";
IfcHierarchyHelper file;
file.filename(filename);
double coords1[] = {100.0, 0.0};
double coords2[] = {200.0, 0.0};
double coords3[] = {300.0, 0.0};
IfcSchema::IfcProfileDef::list profiles (new IfcTemplatedEntityList<IfcSchema::IfcProfileDef>());
IfcSchema::IfcCartesianTransformationOperator2D* transform1 = new IfcSchema::IfcCartesianTransformationOperator2D(file.addDoublet<IfcSchema::IfcDirection>(1, 0), file.addDoublet<IfcSchema::IfcDirection>(0, -1), file.addDoublet<IfcSchema::IfcCartesianPoint>(40, 0), null);
IfcSchema::IfcCartesianTransformationOperator2D* transform2 = new IfcSchema::IfcCartesianTransformationOperator2D(file.addDoublet<IfcSchema::IfcDirection>(0, -1), file.addDoublet<IfcSchema::IfcDirection>(1, 0), file.addDoublet<IfcSchema::IfcCartesianPoint>(40, 0), 0.3);
IfcSchema::IfcProfileDef* p1 = new Ifc2x3::IfcIShapeProfileDef(
IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA,
null, file.addPlacement2d(), 25.0, 50.0, 5.0, 5.0, 2.0);
IfcSchema::IfcProfileDef* p2 = new Ifc2x3::IfcLShapeProfileDef(
IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA,
null, file.addPlacement2d(), 50.0, 25.0, 5.0, 1.0, 2.0, 2.0, null, null);
IfcSchema::IfcProfileDef* p3 = new Ifc2x3::IfcTShapeProfileDef(
IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA,
null, file.addPlacement2d(), 50.0, 40.0, 10.0, 10.0, 3.0, 2.0, 1.0, 2.0, 2.0, null);
IfcSchema::IfcProfileDef* p4 = new Ifc2x3::IfcCShapeProfileDef(
IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA,
null, file.addPlacement2d(80.), 50.0, 25.0, 5.0, 10.0, 2.0, null);
file.AddEntity(p2);
file.AddEntity(p3);
file.AddEntity(transform1);
file.AddEntity(transform2);
IfcSchema::IfcDerivedProfileDef* p5 = new IfcSchema::IfcDerivedProfileDef(IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA, null, p2, transform1, null);
IfcSchema::IfcDerivedProfileDef* p6 = new IfcSchema::IfcDerivedProfileDef(IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA, null, p3, transform2, null);
profiles->push(p1);
profiles->push(p5);
profiles->push(p6);
profiles->push(p4);
file.AddEntities(profiles->generalize());
IfcSchema::IfcCompositeProfileDef* composite = new IfcSchema::IfcCompositeProfileDef(IfcSchema::IfcProfileTypeEnum::IfcProfileType_AREA, S("IFC"), profiles, null);
IfcSchema::IfcBuildingElementProxy* product = new IfcSchema::IfcBuildingElementProxy(
guid(), 0, S("profile"), null, null, 0, 0, null, null);
file.addBuildingProduct(product);
product->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
product->setObjectPlacement(file.addLocalPlacement());
IfcSchema::IfcExtrudedAreaSolid* solid = new IfcSchema::IfcExtrudedAreaSolid(composite,
file.addPlacement3d(), file.addTriplet<IfcSchema::IfcDirection>(0, 0, 1), 20.0);
file.AddEntity(composite);
file.AddEntity(solid);
IfcSchema::IfcRepresentation::list reps (new IfcTemplatedEntityList<IfcSchema::IfcRepresentation>());
IfcSchema::IfcRepresentationItem::list items (new IfcTemplatedEntityList<IfcSchema::IfcRepresentationItem>());
items->push(solid);
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
file.getSingle<IfcSchema::IfcRepresentationContext>(), S("Body"), S("SweptSolid"), items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(0, 0, reps);
file.AddEntity(rep);
file.AddEntity(shape);
product->setRepresentation(shape);
file.getSingle<IfcSchema::IfcProject>()->setName("IfcCompositeProfileDef");
std::ofstream f(filename);
f << file;
}
void create_testcase_for(IfcHierarchyHelper& file, const EllipsePie& pie, Ifc2x3::IfcTrimmingPreference::IfcTrimmingPreference pref) {
const double deg = 1. / 180. * 3.141592653;
double flt1[] = {0. , 0. };
double flt2[] = {pie.r1 * cos(pie.t1*deg), pie.r2 * sin(pie.t1*deg)};
double flt3[] = {pie.r1 * cos(pie.t2*deg), pie.r2 * sin(pie.t2*deg)};
std::vector<double> coords1(flt1, flt1 + 2);
std::vector<double> coords2(flt2, flt2 + 2);
std::vector<double> coords3(flt3, flt3 + 2);
Ifc2x3::IfcCartesianPoint* p1 = new Ifc2x3::IfcCartesianPoint(coords1);
Ifc2x3::IfcCartesianPoint* p2 = new Ifc2x3::IfcCartesianPoint(coords2);
Ifc2x3::IfcCartesianPoint* p3 = new Ifc2x3::IfcCartesianPoint(coords3);
Ifc2x3::IfcCartesianPoint::list points(new IfcTemplatedEntityList<Ifc2x3::IfcCartesianPoint>());
points->push(p3);
points->push(p1);
points->push(p2);
file.AddEntities(points->generalize());
Ifc2x3::IfcEllipse* ellipse = new Ifc2x3::IfcEllipse(file.addPlacement2d(), pie.r1, pie.r2);
file.AddEntity(ellipse);
IfcEntities trim1(new IfcEntityList());
IfcEntities trim2(new IfcEntityList());
if (pref == Ifc2x3::IfcTrimmingPreference::IfcTrimmingPreference_PARAMETER) {
trim1->push(new IfcWrite::IfcSelectHelper(pie.t1, Ifc2x3::Type::IfcParameterValue));
trim2->push(new IfcWrite::IfcSelectHelper(pie.t2, Ifc2x3::Type::IfcParameterValue));
} else {
trim1->push(p2);
trim2->push(p3);
}
Ifc2x3::IfcTrimmedCurve* trim = new Ifc2x3::IfcTrimmedCurve(ellipse, trim1, trim2, true, pref);
file.AddEntity(trim);
Ifc2x3::IfcCompositeCurveSegment::list segments(new IfcTemplatedEntityList<Ifc2x3::IfcCompositeCurveSegment>());
Ifc2x3::IfcCompositeCurveSegment* s2 = new Ifc2x3::IfcCompositeCurveSegment(Ifc2x3::IfcTransitionCode::IfcTransitionCode_CONTINUOUS, true, trim);
Ifc2x3::IfcPolyline* poly = new Ifc2x3::IfcPolyline(points);
file.AddEntity(poly);
Ifc2x3::IfcCompositeCurveSegment* s1 = new Ifc2x3::IfcCompositeCurveSegment(Ifc2x3::IfcTransitionCode::IfcTransitionCode_CONTINUOUS, true, poly);
segments->push(s1);
segments->push(s2);
file.AddEntities(segments->generalize());
Ifc2x3::IfcCompositeCurve* ccurve = new Ifc2x3::IfcCompositeCurve(segments, false);
Ifc2x3::IfcArbitraryClosedProfileDef* profile = new Ifc2x3::IfcArbitraryClosedProfileDef(Ifc2x3::IfcProfileTypeEnum::IfcProfileType_AREA, null, ccurve);
file.AddEntity(ccurve);
file.AddEntity(profile);
IfcSchema::IfcBuildingElementProxy* product = new IfcSchema::IfcBuildingElementProxy(
guid(), 0, S("profile"), null, null, 0, 0, null, null);
file.addBuildingProduct(product);
product->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
product->setObjectPlacement(file.addLocalPlacement(200 * i++));
IfcSchema::IfcExtrudedAreaSolid* solid = new IfcSchema::IfcExtrudedAreaSolid(profile,
file.addPlacement3d(), file.addTriplet<IfcSchema::IfcDirection>(0, 0, 1), 20.0);
file.AddEntity(solid);
IfcSchema::IfcRepresentation::list reps (new IfcTemplatedEntityList<IfcSchema::IfcRepresentation>());
IfcSchema::IfcRepresentationItem::list items (new IfcTemplatedEntityList<IfcSchema::IfcRepresentationItem>());
items->push(solid);
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
file.getSingle<IfcSchema::IfcRepresentationContext>(), S("Body"), S("SweptSolid"), items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(0, 0, reps);
file.AddEntity(rep);
file.AddEntity(shape);
product->setRepresentation(shape);
}
void create_curve_rebar(IfcHierarchyHelper& file)
{
int dia = 24;
int R = 3 * dia;
int length = 12 * dia;
double crossSectionarea = M_PI * (dia / 2) * 2;
IfcSchema::IfcReinforcingBar* rebar = new IfcSchema::IfcReinforcingBar(
guid(), 0, S("test"), null,
null, 0, 0,
null, S("SR24"), //SteelGrade
dia, //diameter
crossSectionarea, //crossSectionarea = math.pi*(12.0/2)**2
0,
IfcSchema::IfcReinforcingBarRoleEnum::IfcReinforcingBarRoleEnum::IfcReinforcingBarRole_LIGATURE,
IfcSchema::IfcReinforcingBarSurfaceEnum::IfcReinforcingBarSurfaceEnum::IfcReinforcingBarSurface_PLAIN //PLAIN or TEXTURED
);
file.addBuildingProduct(rebar);
rebar->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
IfcSchema::IfcCompositeCurveSegment::list::ptr segments(new IfcSchema::IfcCompositeCurveSegment::list());
IfcSchema::IfcCartesianPoint* p1 = file.addTriplet<IfcSchema::IfcCartesianPoint>(0, 0, 1000.);
IfcSchema::IfcCartesianPoint* p2 = file.addTriplet<IfcSchema::IfcCartesianPoint>(0, 0, 0);
IfcSchema::IfcCartesianPoint* p3 = file.addTriplet<IfcSchema::IfcCartesianPoint>(0, R, 0);
IfcSchema::IfcCartesianPoint* p4 = file.addTriplet<IfcSchema::IfcCartesianPoint>(0, R, -R);
IfcSchema::IfcCartesianPoint* p5 = file.addTriplet<IfcSchema::IfcCartesianPoint>(0, R + length, -R);
/*first segment - line */
IfcSchema::IfcCartesianPoint::list::ptr points1(new IfcSchema::IfcCartesianPoint::list());
points1->push(p1);
points1->push(p2);
file.addEntities(points1->generalize());
IfcSchema::IfcPolyline* poly1 = new IfcSchema::IfcPolyline(points1);
file.addEntity(poly1);
IfcSchema::IfcCompositeCurveSegment* segment1 = new IfcSchema::IfcCompositeCurveSegment(IfcSchema::IfcTransitionCode::IfcTransitionCode_CONTINUOUS, true, poly1);
file.addEntity(segment1);
segments->push(segment1);
/*second segment - arc */
IfcSchema::IfcAxis2Placement3D* axis1 = new IfcSchema::IfcAxis2Placement3D(p3, file.addTriplet<IfcSchema::IfcDirection>(1, 0, 0), file.addTriplet<IfcSchema::IfcDirection>(0, 1, 0));
file.addEntity(axis1);
IfcSchema::IfcCircle* circle = new IfcSchema::IfcCircle(axis1, R);
file.addEntity(circle);
IfcEntityList::ptr trim1(new IfcEntityList);
IfcEntityList::ptr trim2(new IfcEntityList);
trim1->push(new IfcSchema::IfcParameterValue(180));
trim1->push(p2);
trim2->push(new IfcSchema::IfcParameterValue(270));
trim2->push(p4);
IfcSchema::IfcTrimmedCurve* trimmed_curve = new IfcSchema::IfcTrimmedCurve(circle, trim1, trim2, false, IfcSchema::IfcTrimmingPreference::IfcTrimmingPreference_PARAMETER);
file.addEntity(trimmed_curve);
IfcSchema::IfcCompositeCurveSegment* segment2 = new IfcSchema::IfcCompositeCurveSegment(IfcSchema::IfcTransitionCode::IfcTransitionCode_CONTSAMEGRADIENT, false, trimmed_curve);
file.addEntity(segment2);
segments->push(segment2);
/*third segment - line */
IfcSchema::IfcCartesianPoint::list::ptr points2(new IfcSchema::IfcCartesianPoint::list());
points2->push(p4);
points2->push(p5);
file.addEntities(points2->generalize());
IfcSchema::IfcPolyline* poly2 = new IfcSchema::IfcPolyline(points2);
file.addEntity(poly2);
IfcSchema::IfcCompositeCurveSegment* segment3 = new IfcSchema::IfcCompositeCurveSegment(IfcSchema::IfcTransitionCode::IfcTransitionCode_CONTINUOUS, true, poly2);
file.addEntity(segment3);
segments->push(segment3);
IfcSchema::IfcCompositeCurve* curve = new IfcSchema::IfcCompositeCurve(segments, false);
file.addEntity(curve);
IfcSchema::IfcSweptDiskSolid* solid = new IfcSchema::IfcSweptDiskSolid(curve, dia / 2, null, 0, 1);
IfcSchema::IfcRepresentation::list::ptr reps(new IfcSchema::IfcRepresentation::list());
IfcSchema::IfcRepresentationItem::list::ptr items(new IfcSchema::IfcRepresentationItem::list());
items->push(solid);
IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
file.getSingle<IfcSchema::IfcRepresentationContext>(), S("Body"), S("AdvancedSweptSolid"), items);
reps->push(rep);
IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(null, null, reps);
file.addEntity(shape);
rebar->setRepresentation(shape);
IfcSchema::IfcObjectPlacement* storey_placement = file.getSingle<IfcSchema::IfcBuildingStorey>()->ObjectPlacement();
rebar->setObjectPlacement(file.addLocalPlacement(storey_placement, 0, 0, 0));
}
int main() {
// The IfcHierarchyHelper is a subclass of the regular IfcFile that provides several
// convenience functions for working with geometry in IFC files.
IfcHierarchyHelper file;
file.header().file_name().name("IfcAdvancedHouse.ifc");
IfcSchema::IfcBuilding* building = file.addBuilding();
// By adding a building, a hierarchy has been automatically created that consists of the following
// structure: IfcProject > IfcSite > IfcBuilding
// Lateron changing the name of the IfcProject can be done by obtaining a reference to the
// project, which has been created automatically.
file.getSingle<IfcSchema::IfcProject>()->setName("IfcOpenHouse");
// To demonstrate the ability to serialize arbitrary opencascade solids a building envelope is
// constructed by applying boolean operations. Naturally, in IFC, building elements should be
// modeled separately, with rich parametric and relational semantics. Creating geometry in this
// way does not preserve any history and is merely a demonstration of technical capabilities.
TopoDS_Shape outer = BRepPrimAPI_MakeBox(gp_Pnt(-5000., -180., -2000.), gp_Pnt(5000., 5180., 3000.)).Shape();
TopoDS_Shape inner = BRepPrimAPI_MakeBox(gp_Pnt(-4640., 180., 0.), gp_Pnt(4640., 4820., 3000.)).Shape();
TopoDS_Shape window1 = BRepPrimAPI_MakeBox(gp_Pnt(-5000., -180., 400.), gp_Pnt( 500., 1180., 2000.)).Shape();
TopoDS_Shape window2 = BRepPrimAPI_MakeBox(gp_Pnt( 2070., -180., 400.), gp_Pnt(3930., 180., 2000.)).Shape();
TopoDS_Shape building_shell = BRepAlgoAPI_Cut(
BRepAlgoAPI_Cut(
BRepAlgoAPI_Cut(outer, inner),
window1
),
window2
);
// Since the solid consists only of planar faces and straight edges it can be serialized as an
// IfcFacetedBRep. If it would not be a polyhedron, serialise() can only be successful when linked
// to the IFC4 model and with `advanced` set to `true` which introduces IfcAdvancedFace. It would
// return `0` otherwise.
IfcSchema::IfcProductDefinitionShape* building_shape = IfcGeom::serialise(building_shell, false);
file.addEntity(building_shape);
IfcSchema::IfcRepresentation* rep = *building_shape->Representations()->begin();
rep->setContextOfItems(file.getRepresentationContext("model"));
building->setRepresentation(building_shape);
// A pale white colour is assigned to the building.
file.setSurfaceColour(
building_shape, 0.75, 0.73, 0.68);
// For the ground mesh of the IfcSite we will use a Nurbs surface created in Open Cascade. Only
// in IFC4 the surface can be directly serialized. In IFC2X3 the it will have to be tesselated.
TopoDS_Shape shape;
createGroundShape(shape);
IfcSchema::IfcProductDefinitionShape* ground_representation = IfcGeom::serialise(shape, true);
if (!ground_representation) {
ground_representation = IfcGeom::tesselate(shape, 100.);
}
file.getSingle<IfcSchema::IfcSite>()->setRepresentation(ground_representation);
IfcSchema::IfcRepresentation::list::ptr ground_reps = file.getSingle<IfcSchema::IfcSite>()->Representation()->Representations();
for (IfcSchema::IfcRepresentation::list::it it = ground_reps->begin(); it != ground_reps->end(); ++it) {
(*it)->setContextOfItems(file.getRepresentationContext("Model"));
}
file.addEntity(ground_representation);
file.setSurfaceColour(ground_representation, 0.15, 0.25, 0.05);
/*
// Note that IFC lacks elementary surfaces that STEP does have, such as spherical_surface.
// BRepBuilderAPI_NurbsConvert can be used to serialize such surfaces as nurbs surfaces.
TopoDS_Shape sphere = BRepPrimAPI_MakeSphere(gp_Pnt(), 1000.).Shape();
IfcSchema::IfcProductDefinitionShape* sphere_representation = IfcGeom::serialise(sphere, true);
if (S(IfcSchema::Identifier) == "IFC4") {
sphere = BRepBuilderAPI_NurbsConvert(sphere, true).Shape();
sphere_representation = IfcGeom::serialise(sphere, true);
}
*/
// Finally create a file stream for our output and write the IFC file to it.
std::ofstream f("IfcAdvancedHouse.ifc");
f << file;
}