Change brep to Instance Definition [c++]

Rhino Developer
1

Hi;
I want to get the Instance Definition from the other rhino file, use the following code, I already have a brep,how cant I change the brep to Instance Definition or is it any way to get Instance Definition the direct?

  ON_wString filename = "E:\\Test.3dm";
  filename.TrimLeftAndRight();
  FILE* archive_fp = ON::OpenFile(filename, L"rb");
  if (0 == archive_fp)
  {
    return 0;
  }
  ON_BinaryFile archive(ON::read3dm, archive_fp);
  ONX_Model model;
  bool rc = model.Read(archive) ? TRUE : FALSE;
  ON::CloseFile( archive_fp );
  if (!rc)
  {
    return 0;
  }
  int num_imported = 0;
  const ON_Brep* brep;
  for (int i = 0; i < model.m_object_table.Count(); i++)
  {
    const ONX_Model_Object& model_object = model.m_object_table[i];
    brep = ON_Brep::Cast(model_object.m_object);
    if (0 != brep)
    {
      num_imported++;
    }
  }
  if (0 == num_imported)
  {
   return 0;
  }
  else
  {
      return 1;
  }
2

Does this example help?

– Dale

3

Hi @dale it is verry helpful,think you :slight_smile:.