mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-10 09:48:32 +00:00
Thomas Krijnen
81 lines
3.9 KiB
C++
81 lines
3.9 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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/********************************************************************************
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* *
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* Example that generates an IfcTriangulatedFaceSet *
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* *
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********************************************************************************/
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#include "../ifcparse/schemas/Ifc4.h"
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#include "../ifcparse/hierarchy_helper.h"
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#include "suzanne_geometry.h"
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#include <fstream>
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typedef std::string S;
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typedef ifcopenshell::global_id guid;
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template <typename T>
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std::vector< std::vector<T> > create_vector_from_array(const T* arr, unsigned size) {
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std::vector< std::vector<T> > result;
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result.reserve(size);
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for (unsigned i = 0; i < size; ) {
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std::vector<T> ts; ts.reserve(3);
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for (unsigned j = 0; j < 3; ++i, ++j) {
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ts.push_back(arr[i]);
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}
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result.push_back(ts);
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}
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return result;
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}
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int main(int argc, char** argv) {
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hierarchy_helper<Ifc4> file;
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Ifc4::IfcBuildingElementProxy product = file.create<Ifc4::IfcBuildingElementProxy>().initialize(
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guid(), std::nullopt, S("Blender's Suzanne"), std::nullopt, std::nullopt, std::nullopt, std::nullopt, std::nullopt, std::nullopt);
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file.addBuildingProduct(product);
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product.setOwnerHistory(file.getSingle<Ifc4::IfcOwnerHistory>());
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product.setObjectPlacement(file.addLocalPlacement());
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std::vector< std::vector< double > > vertices_vector = create_vector_from_array(vertices, sizeof(vertices) / sizeof(vertices[0]));
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std::vector< std::vector< int > > indices_vector = create_vector_from_array(indices, sizeof(indices) / sizeof(indices[0]));
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Ifc4::IfcCartesianPointList3D coordinates = file.create<Ifc4::IfcCartesianPointList3D>().initialize(vertices_vector);
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Ifc4::IfcTriangulatedFaceSet faceset = file.create<Ifc4::IfcTriangulatedFaceSet>().initialize(coordinates, std::nullopt, std::nullopt, indices_vector, std::nullopt);
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Ifc4::IfcShapeRepresentation rep = file.create<Ifc4::IfcShapeRepresentation>().initialize(
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file.getRepresentationContext("Model"), "Body", "SurfaceModel", {faceset});
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Ifc4::IfcProductDefinitionShape shape = file.create<Ifc4::IfcProductDefinitionShape>().initialize(std::nullopt, std::nullopt, {rep});
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file.add_entity(shape);
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product.setRepresentation(shape);
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const std::string filename = "tesselated_faceset.ifc";
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file.header().file_name().setname(filename);
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std::ofstream f(filename.c_str());
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f << file;
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}
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