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This commit is contained in:
Thomas Krijnen
2011-05-08 11:04:32 +00:00
commit a1016d82da
34 changed files with 16844 additions and 0 deletions
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src/ifcobj/IfcObj.cpp
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/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
/********************************************************************************
* *
* This is a brief example of how IfcOpenShell can be interfaced from within *
* a C++ context. The application reads an .ifc file and outputs geometry in *
* the Wavefront .obj file format. *
* *
********************************************************************************/
#include <fstream>
#include <set>
#include "../ifcparse/IfcGeomObjects.h"
#include "../ifcobj/ObjMaterials.h"
int main ( int argc, char** argv ) {
if ( argc != 2 ) {
std::cout << "usage: IfcObj <filename.ifc>" << std::endl;
return 1;
}
const std::string fnObj = std::string(argv[1]) + ".obj";
const std::string fnMtl = std::string(argv[1]) + ".mtl";
ofstream fObj(fnObj.c_str());
ofstream fMtl(fnMtl.c_str());
if ( ! ( fObj.is_open() && fMtl.is_open() ) ) {
std::cout << "[Error] unable to open output file for writing" << std::endl;
return 1;
}
// Parse the file supplied in argv[1]. Returns true on succes.
// The second argument defines whether geometry will be defined using global or local coordinates.
if ( ! IfcGeomObjects::Init(argv[1],true) ) {
std::cout << "[Error] unable to parse .ifc file or no geometrical entities found" << std::endl;
return 1;
}
fObj << "# File generated by IfcOpenShell" << std::endl;
fObj << "mtllib " << fnMtl << std::endl;
std::set<std::string> materials;
// The functions IfcGeomObjects::Get() and IfcGeomObjects::Next() wrap an iterator of all geometrical entities in the Ifc file.
// IfcGeomObjects::Get() returns an IfcGeomObjects::IfcGeomObject (see IfcObjects.h for definition)
// IfcGeomObjects::Next() is used to poll whether more geometrical entities are available
do {
const IfcGeomObjects::IfcGeomObject* o = IfcGeomObjects::Get();
if ( o->type == "IFCSPACE" || o->type == "IFCOPENINGELEMENT" ) continue;
fObj << "o " << o->name << std::endl;
fObj << "usemtl " << o->type << std::endl;
materials.insert(o->type);
const int vcount = o->mesh->verts.size() / 3;
for ( IfcGeomObjects::FltIt it = o->mesh->verts.begin(); it != o->mesh->verts.end(); ) {
const float x = *(it++);
const float y = *(it++);
const float z = *(it++);
fObj << "v " << x << " " << y << " " << z << std::endl;
}
for ( IfcGeomObjects::IntIt it = o->mesh->faces.begin(); it != o->mesh->faces.end(); ) {
const int v1 = *(it++)-vcount;
const int v2 = *(it++)-vcount;
const int v3 = *(it++)-vcount;
fObj << "f " << v1 << " " << v2 << " " << v3 << std::endl;
}
} while ( IfcGeomObjects::Next() );
// Writes the material settings, defined in Materials.h
fMtl << "# File generated by IfcOpenShell" << std::endl;
for( std::set<std::string>::iterator it = materials.begin(); it != materials.end(); ++ it ) {
fMtl << GetMaterial(*it);
}
}
src/ifcobj/Materials.cpp
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#include "../IfcObj/Materials.h"
void InitMaterials() {
materials["IFCSITE"] = ObjMaterial("IFCSITE",0.7f,0.8f,0.5f);
}
src/ifcobj/ObjMaterials.h
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/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
/********************************************************************************
* *
* This file defines materials in .mtl format for several IFC datatypes *
* *
********************************************************************************/
#include <string>
#include <sstream>
class ObjMaterial {
private:
std::string data;
public:
ObjMaterial(const std::string& name,
float Kd_r = 0.7f,float Kd_g = 0.7f,float Kd_b = 0.7f,
float Ks_r = 0.2f,float Ks_g = 0.2f,float Ks_b = 0.2f,
float Ka_r = 0.1f,float Ka_g = 0.1f,float Ka_b = 0.1f,
float Ns = 10.0f, float Tr = 1.0f) {
std::stringstream ss;
ss << "newmtl " << name << std::endl;
ss << "Kd " << Kd_r << " " << Kd_g << " " << Kd_b << std::endl;
ss << "Ks " << Ks_r << " " << Ks_g << " " << Ks_b << std::endl;
ss << "Ka " << Ka_r << " " << Ka_g << " " << Ka_b << std::endl;
ss << "Ns " << Ns << std::endl;
ss << "Tr " << Tr << std::endl;
ss << "d " << Tr << std::endl;
ss << "D " << Tr << std::endl;
data = ss.str();
}
friend ostream& operator<<(ostream& o, const ObjMaterial& m) {o << m.data; return o;}
};
ObjMaterial GetMaterial(const std::string& s) {
if ( s == "IFCSITE" ) { return ObjMaterial("IFCSITE",0.75f,0.8f,0.65f); }
if ( s == "IFCSLAB" ) { return ObjMaterial("IFCSLAB",0.4f,0.4f,0.4f); }
if ( s == "IFCWALLSTANDARDCASE" ) { return ObjMaterial("IFCWALLSTANDARDCASE",0.9f,0.9f,0.9f); }
if ( s == "IFCWALL" ) { return ObjMaterial("IFCWALL",0.9f,0.9f,0.9f); }
if ( s == "IFCWINDOW" ) { return ObjMaterial("IFCWINDOW",0.75f,0.8f,0.75f,1.0f,1.0f,1.0f,0.0f,0.0f,0.0f,500.0f,0.3f); }
if ( s == "IFCDOOR" ) { return ObjMaterial("IFCDOOR",0.55f,0.3f,0.15f); }
if ( s == "IFCBEAM" ) { return ObjMaterial("IFCBEAM",0.75f,0.7f,0.7f); }
if ( s == "IFCRAILING" ) { return ObjMaterial("IFCRAILING",0.75f,0.7f,0.7f); }
if ( s == "IFCMEMBER" ) { return ObjMaterial("IFCRAILING",0.75f,0.7f,0.7f); }
return ObjMaterial(s);
}