mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-09 17:31:45 +00:00
Thomas Krijnen
281 lines
10 KiB
C++
281 lines
10 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#include "ifcparse/macros.h"
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#ifndef IfcSchema
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#define IfcSchema Ifc2x3
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#endif
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#include "ifcparse/IfcFile.h"
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#include "ifcparse/IfcLogger.h"
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#include INCLUDE_SCHEMA(ifcparse, IfcSchema)
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#include INCLUDE_SCHEMA_DEFINITIONS(ifcparse, IfcSchema)
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#include <boost/preprocessor/stringize.hpp>
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#include <boost/preprocessor/seq/for_each.hpp>
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#include <boost/preprocessor/seq/size.hpp>
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#include <boost/preprocessor/seq/pop_back.hpp>
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#include <boost/preprocessor/comparison/greater.hpp>
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#include <boost/preprocessor/selection/min.hpp>
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#ifdef _MSC_VER
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#define strcasecmp _stricmp
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#endif
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#ifndef SCHEMA_SEQ
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static_assert(false, "A boost preprocessor sequence of schema identifiers is needed for this file to compile.");
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#endif
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#include <iomanip>
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#if USE_VLD
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#include <vld.h>
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#endif
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template<class T, class = void>
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struct is_ifc4_or_higher : std::false_type {};
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template<class T>
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struct is_ifc4_or_higher<T, std::void_t<decltype(T::IfcMaterialDefinition)>> : std::true_type { };
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typedef std::map<std::string, std::map<std::string, std::string>> element_properties;
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#ifdef SCHEMA_HAS_IfcBuildingElement
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typedef IfcSchema::IfcBuildingElement element_t;
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#else
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typedef IfcSchema::IfcBuiltElement element_t;
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#endif
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std::string format_string(const AttributeValue& argument) {
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// Argument is a runtime tagged variant for the various data types in a IFC model,
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// in this particular case we only care about flattening it to a string.
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// @todo mostly duplicated from XmlSerializer.cpp
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if (argument.isNull()) {
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return "-";
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}
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auto argument_type = argument.type();
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switch (argument_type) {
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case IfcUtil::Argument_BOOL: {
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const bool b = argument;
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return b ? "true" : "false";
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}
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case IfcUtil::Argument_DOUBLE: {
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const double d = argument;
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std::stringstream stream;
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stream << std::setprecision(std::numeric_limits< double >::max_digits10) << d;
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return stream.str();
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break; }
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case IfcUtil::Argument_STRING:
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case IfcUtil::Argument_ENUMERATION: {
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return static_cast<std::string>(argument);
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break; }
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case IfcUtil::Argument_INT: {
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const int v = argument;
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std::stringstream stream;
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stream << v;
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return stream.str();
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break; }
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}
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return "?";
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}
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template <typename Schema, typename T>
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void process_pset(element_properties& props, const T* inst) {
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// Process an individual Property or Quantity set.
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if (auto pset = inst->template as<typename Schema::IfcPropertySet>()) {
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if (!pset->Name()) {
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return;
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}
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auto ps = pset->HasProperties();
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for (auto it = ps->begin(); it != ps->end(); ++it) {
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auto& p = *it;
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if (auto singleval = p->template as<typename Schema::IfcPropertySingleValue>()) {
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std::string propname, propvalue;
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if constexpr (is_ifc4_or_higher<Schema>::value) {
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if (!singleval->Name()) {
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continue;
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}
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propname = *singleval->Name();
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}
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if constexpr (!is_ifc4_or_higher<Schema>::value) {
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propname = singleval->Name();
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}
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if (!singleval->NominalValue()) {
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propvalue = "-";
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} else {
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props[*pset->Name()][propname] = format_string(singleval->NominalValue()->template as<IfcUtil::IfcBaseClass>()->get_attribute_value(0));
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}
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}
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}
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}
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if (auto qset = inst->template as<typename Schema::IfcElementQuantity>()) {
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if (!qset->Name()) {
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return;
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}
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auto qs = qset->Quantities();
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for (auto it = qs->begin(); it != qs->end(); ++it) {
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auto& q = *it;
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if (q->template as<typename Schema::IfcPhysicalSimpleQuantity>() && q->get_attribute_value(3).type() == IfcUtil::Argument_DOUBLE) {
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double v = q->get_attribute_value(3);
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props[*qset->Name()][q->Name()] = std::to_string(v);
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}
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}
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}
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if constexpr (is_ifc4_or_higher<Schema>::value) {
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if (auto extprops = inst->template as<typename Schema::IfcExtendedProperties>()) {
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// @todo
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}
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}
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}
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template <typename Schema>
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void get_psets_s(element_properties& props, const typename Schema::IfcObjectDefinition* inst) {
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// Extracts the property definitions for an IFC instance.
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if (auto tyob = inst->template as<typename Schema::IfcTypeObject>()) {
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if (tyob->HasPropertySets()) {
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auto defs = *tyob->HasPropertySets();
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for (auto it = defs->begin(); it != defs->end(); ++it) {
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auto& def = *it;
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process_pset<Schema>(props, def);
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}
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}
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}
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if constexpr (is_ifc4_or_higher<Schema>::value) {
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if (auto mdef = inst->template as<typename Schema::IfcMaterialDefinition>()) {
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auto defs = mdef->HasProperties();
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for (auto it = defs->begin(); it != defs->end(); ++it) {
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auto& def = *it;
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process_pset<Schema>(props, def);
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}
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}
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if (auto pdef = inst->template as<typename Schema::IfcProfileDef>()) {
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auto defs = pdef->HasProperties();
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for (auto it = defs->begin(); it != defs->end(); ++it) {
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auto& def = *it;
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process_pset<Schema>(props, def);
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}
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}
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}
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if (auto ob = inst->template as<typename Schema::IfcObject>()) {
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if constexpr (is_ifc4_or_higher<Schema>::value) {
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auto rels = ob->IsTypedBy();
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for (auto it = rels->begin(); it != rels->end(); ++it) {
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auto& rel = *it;
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get_psets_s<Schema>(props, rel->RelatingType());
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}
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}
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{
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auto rels = ob->IsDefinedBy();
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for (auto it = rels->begin(); it != rels->end(); ++it) {
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auto& rel = *it;
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if (auto bytype = rel->template as<typename Schema::IfcRelDefinesByType>()) {
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get_psets_s<Schema>(props, bytype->RelatingType());
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} else if (auto byprops = rel->template as<typename Schema::IfcRelDefinesByProperties>()) {
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process_pset<Schema>(props, byprops->RelatingPropertyDefinition());
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}
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}
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}
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}
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}
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// What follows is machinery to create a preprocessor-based dispatch mechanism to dispatch to the
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// correct get_psets_s<Schema>() based on inst->declaration().schema()->name().
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#define EXPAND_AND_CONCATENATE(elem) Ifc##elem
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#define GENERATE_LITERAL_STRING(elem) "Ifc" # elem
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#define TEST_AND_DISPATCH(r, data, elem) \
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if (strcasecmp(schema_name, GENERATE_LITERAL_STRING(elem)) == 0) { get_psets_s<EXPAND_AND_CONCATENATE(elem)>(props, inst->as<EXPAND_AND_CONCATENATE(elem)::IfcObjectDefinition>()); }
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void get_psets(element_properties& props, const IfcUtil::IfcBaseClass* inst) {
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auto schema_name = inst->declaration().schema()->name().c_str();
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BOOST_PP_SEQ_FOR_EACH(TEST_AND_DISPATCH, , SCHEMA_SEQ)
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}
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int main(int argc, char** argv) {
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if (argc != 2) {
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std::cout << "usage: IfcParseExamples <filename.ifc>" << std::endl;
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return 1;
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}
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// Redirect the output (both progress and log) to stdout
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Logger::Root().SetOutput(&std::cout, &std::cout);
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// Parse the IFC file provided in argv[1]
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IfcParse::IfcFile file(argv[1]);
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if (!file.good()) {
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std::cout << "Unable to parse .ifc file" << std::endl;
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return 1;
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}
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// Lets get a list of IfcBuildingElements, this is the parent
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// type of things like walls, windows and doors.
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// entitiesByType is a templated function and returns a
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// templated class that behaves like a std::vector.
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// Note that the return types are all typedef'ed as members of
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// the generated classes, ::list for the templated vector class,
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// ::ptr for a shared pointer and ::it for an iterator.
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// We will simply iterate over the vector and print a string
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// representation of the entity to stdout.
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//
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// Secondly, lets find out which of them are IfcWindows.
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// In order to access the additional properties that windows
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// have on top af the properties of building elements,
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// we need to cast them to IfcWindows. Since these properties
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// are optional we need to make sure the properties are
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// defined for the window in question before accessing them.
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auto elements = file.instances_by_type<element_t>();
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std::cout << "Found " << elements->size() << " elements in " << argv[1] << ":" << std::endl;
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for (auto it = elements->begin(); it != elements->end(); ++it) {
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const auto* element = *it;
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element->toString(std::cout);
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std::cout << std::endl;
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const IfcSchema::IfcWindow* window;
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if ((window = element->as<IfcSchema::IfcWindow>()) != 0) {
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if (window->OverallWidth() && window->OverallHeight()) {
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const double area = *window->OverallWidth() * *window->OverallHeight();
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std::cout << "The area of this window is " << area << std::endl;
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}
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}
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element_properties props;
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get_psets(props, element);
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for (auto& ps : props) {
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std::cout << ps.first << std::endl;
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std::cout << std::string(ps.first.size(), '=') << std::endl;
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size_t max_key_len = 0;
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for (auto& p : ps.second) {
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if (p.first.size() > max_key_len) {
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max_key_len = p.first.size();
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}
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}
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for (auto& p : ps.second) {
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std::cout << p.first << std::string(max_key_len - p.first.size(), ' ') << ":" << p.second << std::endl;
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}
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std::cout << std::endl;
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}
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}
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}
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