Refer to the BRep Simplification Example.

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#include <iostream>
using namespace std;
class FaceCounter : public ModelData_Model::VoidElementVisitor
{
public:
void operator() (const ModelData_Part& thePart) override
{
auto aBRep = thePart.BRepRepresentation();
const ModelData_BodyList& aBodyList = aBRep.Get();
for (ModelData_BodyList::SizeType i = 0; i < aBodyList.Size(); ++i) {
const ModelData_Body& aBody = aBodyList[i];
ModelData_Shape::Iterator aFaceIt (aBody, ModelData_ST_Face);
while (aFaceIt.HasNext()) {
aFaceIt.Next();
++myNumberOfFaces;
}
}
}
size_t NumberOfFaces () const
{
return myNumberOfFaces;
}
private:
size_t myNumberOfFaces = 0;
};
int main (int argc, char *argv[])
{
return 1;
}
if (argc != 3) {
cerr << "Usage: " << argv[0] << " <input_file> <output_file>, where:" << endl;
cerr << " <input_file> is a name of the ASIC file to be read" << endl;
cerr << " <output_file> is a name of the XML file to be saved" << endl;
return 1;
}
const char* aSource = argv[1];
cerr << "Failed to read the file " << aSource << endl;
return 1;
}
// Making a model data
cerr << "Failed to transfer model data to specified format" << endl;
return 1;
}
FaceCounter aBeforeCounter;
aModel.Accept (aBeforeCounter);
cout << "Model name: " << aModel.Name() << endl;
cout << "# of faces before: " << aBeforeCounter.NumberOfFaces() << endl;
// Running the simplifier
aBuilder.SetLevel (ModelSimplifier_SimplifierBuilder::High);
aBuilder.SetFeatureSize (ModelSimplifier_SimplifierBuilder::Large);
ModelSimplifier_Simplifier aSimplifier = aBuilder.CreatePipeline();
ModelData_Model aNewModel = aSimplifier.Perform (aModel);
// How many shapes does simplified model contain?
FaceCounter anAfterCounter;
aNewModel.Accept (anAfterCounter);
cout << "# of faces after: " << anAfterCounter.NumberOfFaces() << endl;
// Saving the simplified model