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Fix examples

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This commit is contained in:
Thomas Krijnen
2026-01-08 09:44:00 +01:00
parent bc46a8f85b
commit 5b85a2c38b
2 changed files with 44 additions and 31 deletions
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src/examples/IfcParseExamples.cpp
+2 -2
View File
@@ -196,9 +196,9 @@ void get_psets_s(element_properties& props, const typename Schema::IfcObjectDefi
auto rels = ob.IsDefinedBy();
for (auto& rel : rels) {
if (auto bytype = rel.template as<typename Schema::IfcRelDefinesByType>()) {
get_psets_s<Schema>(props, bytype->RelatingType());
get_psets_s<Schema>(props, bytype.RelatingType());
} else if (auto byprops = rel.template as<typename Schema::IfcRelDefinesByProperties>()) {
process_pset<Schema>(props, byprops->RelatingPropertyDefinition());
process_pset<Schema>(props, byprops.RelatingPropertyDefinition());
}
}
}
src/examples/IfcSimplifiedAlignment.cpp
+42 -29
View File
@@ -39,37 +39,49 @@
// performs basic project setup including created the IfcProject object
// and initializing the project units to FEET
Schema::IfcProject* setup_project(IfcHierarchyHelper<Schema>& file) {
Schema::IfcProject setup_project(IfcHierarchyHelper<Schema>& file) {
std::vector<std::string> file_description;
file_description.push_back("ViewDefinition[Alignment-basedReferenceView]");
file.header().file_description()->setdescription(file_description);
file.header().file_description().setdescription(file_description);
auto project = file.addProject();
project->setName(std::string("FHWA Bridge Geometry Manual Example Alignment"));
project->setDescription(std::string("C++ Example - Simplified"));
project.setName(std::string("FHWA Bridge Geometry Manual Example Alignment"));
project.setDescription(std::string("C++ Example - Simplified"));
// set up project units for feet
// the call to file.addProject() sets up length units as millimeter.
auto units_in_context = project->UnitsInContext();
auto units = units_in_context->Units();
auto begin = units->begin();
auto units_in_context = project.UnitsInContext();
auto units = units_in_context.Units();
auto begin = units.begin();
auto iter = begin;
auto end = units->end();
auto end = units.end();
for (; iter != end; iter++) {
auto unit = *iter;
if (unit->as<Schema::IfcSIUnit>() && unit->as<Schema::IfcSIUnit>()->UnitType() == Schema::IfcUnitEnum::IfcUnit_LENGTHUNIT) {
auto dimensions = new Schema::IfcDimensionalExponents(1, 0, 0, 0, 0, 0, 0);
file.addEntity(dimensions);
if (unit.as<Schema::IfcSIUnit>() && unit.as<Schema::IfcSIUnit>().UnitType() == Schema::IfcUnitEnum::IfcUnit_LENGTHUNIT) {
auto dimensions = file.create<Schema::IfcDimensionalExponents>();
dimensions.setLengthExponent(1);
dimensions.setMassExponent(0);
dimensions.setTimeExponent(0);
dimensions.setElectricCurrentExponent(0);
dimensions.setThermodynamicTemperatureExponent(0);
dimensions.setAmountOfSubstanceExponent(0);
dimensions.setLuminousIntensityExponent(0);
auto conversion_factor = new Schema::IfcMeasureWithUnit(new Schema::IfcLengthMeasure(304.80), unit->as<Schema::IfcSIUnit>());
file.addEntity(conversion_factor);
auto conversion_factor = file.create<Schema::IfcMeasureWithUnit>();
auto length = file.create<Schema::IfcLengthMeasure>();
length.set_attribute_value(0, 304.80);
conversion_factor.setValueComponent(length);
conversion_factor.setUnitComponent(unit);
auto conversion_based_unit = new Schema::IfcConversionBasedUnit(dimensions, Schema::IfcUnitEnum::IfcUnit_LENGTHUNIT, "FEET", conversion_factor);
file.addEntity(conversion_based_unit);
auto conversion_based_unit = file.create<Schema::IfcConversionBasedUnit>();
conversion_based_unit.setDimensions(dimensions);
conversion_based_unit.setUnitType(Schema::IfcUnitEnum::IfcUnit_LENGTHUNIT);
conversion_based_unit.setName("FEET");
conversion_based_unit.setConversionFactor(conversion_factor);
units->remove(unit); // remove the millimeter unit
units->push(conversion_based_unit); // add the feet unit
units_in_context->setUnits(units); // update the UnitsInContext
units.erase(std::remove(units.begin(), units.end(), unit)); // remove the millimeter unit
units.push_back(conversion_based_unit); // add the feet unit
units_in_context.setUnits(units); // update the UnitsInContext
break; // Done!, the length unit was found, so break out of the loop
}
@@ -129,10 +141,11 @@ int main() {
// IFC 4.1.4.1.1 "Every IfcAlignment must be related to IfcProject using the IfcRelAggregates relationship"
// https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/concepts/Object_Composition/Aggregation/Alignment_Aggregation_To_Project/content.html
// IfcProject <-> IfcRelAggregates <-> IfcAlignment
typename aggregate_of<typename Schema::IfcObjectDefinition>::ptr list_of_alignments_in_project(new aggregate_of<typename Schema::IfcObjectDefinition>());
list_of_alignments_in_project->push(alignment);
auto aggregate_alignments_with_project = new Schema::IfcRelAggregates(IfcParse::IfcGlobalId(), nullptr, std::string("Alignments in project"), boost::none, project, list_of_alignments_in_project);
file.addEntity(aggregate_alignments_with_project);
auto aggregate_alignments_with_project = file.create<Schema::IfcRelAggregates>();
aggregate_alignments_with_project.setGlobalId(IfcParse::IfcGlobalId());
aggregate_alignments_with_project.setName("Alignments in project");
aggregate_alignments_with_project.setRelatingObject(project);
aggregate_alignments_with_project.setRelatedObjects({alignment});
// Define the spatial structure of the alignment with respect to the site
@@ -141,21 +154,21 @@ int main() {
// IfcSite <-> IfcRelReferencedInSpatialStructure <-> IfcAlignment
// This means IfcAlignment is not part of the IfcSite (it is not an aggregate component) but instead IfcAlignment is used within
// the IfcSite by reference. This implies an IfcAlignment can traverse many IfcSite instances within an IfcProject
typename Schema::IfcSpatialReferenceSelect::list::ptr list_alignments_referenced_in_site(new Schema::IfcSpatialReferenceSelect::list);
list_alignments_referenced_in_site->push(alignment);
// Complete the model by creating sites for the 3 bridges
for (int i = 1; i <= 3; i++) {
std::ostringstream os;
os << "Site of Bridge " << i;
auto site = file.addSite(project, nullptr);
site->setName(os.str());
auto site = file.addSite(project);
site.setName(os.str());
std::ostringstream description;
description << "Alignments referenced into the spatial structure of Bridge Site " << i;
auto rel_referenced_in_spatial_structure = new Schema::IfcRelReferencedInSpatialStructure(IfcParse::IfcGlobalId(), nullptr, boost::none, description.str(), list_alignments_referenced_in_site, site);
file.addEntity(rel_referenced_in_spatial_structure);
auto rel_referenced_in_spatial_structure = file.create<Schema::IfcRelReferencedInSpatialStructure>();
rel_referenced_in_spatial_structure.setGlobalId(IfcParse::IfcGlobalId());
rel_referenced_in_spatial_structure.setDescription(description.str());
rel_referenced_in_spatial_structure.setRelatedElements(std::vector<Schema::IfcSpatialReferenceSelect>{alignment});
rel_referenced_in_spatial_structure.setRelatingStructure(site);
}
// That's it - save the model to a file