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Use positive vertex indices for Wavefront OBJ files: https://sourceforge.net/projects/ifcopenshell/forums/forum/1782717/topic/5341422

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This commit is contained in:
Thomas Krijnen
2012-06-13 07:29:22 +00:00
parent 2137ad2488
commit 0a5ddece8e
1 changed files with 5 additions and 3 deletions
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src/ifcobj/IfcObj.cpp
+5 -3
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@@ -72,6 +72,7 @@ int main ( int argc, char** argv ) {
// 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
int vcount_total = 1;
do {
const IfcGeomObjects::IfcGeomObject* o = IfcGeomObjects::Get();
if ( o->type == "IfcSpace" || o->type == "IfcOpeningElement" ) continue;
@@ -94,11 +95,12 @@ int main ( int argc, char** argv ) {
fObj << "vn " << 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;
const int v1 = *(it++)+vcount_total;
const int v2 = *(it++)+vcount_total;
const int v3 = *(it++)+vcount_total;
fObj << "f " << v1 << "//" << v1 << " " << v2 << "//" << v2 << " " << v3 << "//" << v3 << std::endl;
}
vcount_total += vcount;
const int progress = IfcGeomObjects::Progress() / 2;
if ( old_progress!= progress ) std::cout << "\r[" << std::string(progress,'#') << std::string(50 - progress,' ') << "]" << std::flush;