for (int i=0; i<objects.size(); i++) {

    WavefrontObj* wfo = dynamic_cast<WavefrontObj*>( objects[i] );

    if (wfo || i != thisObjIndex) { // don't check for int with the originating object
      vec3 point, normal;
      Material *intMat;
      float t;
      int intPartIndex;

      if (objects[i]->rayInt( rayStart, rayDir, ((i != thisObjIndex) ? -1 : thisObjPartIndex), point, normal, t, intMat, intPartIndex ))
    if (0 < t && t < param) {
      param = t;
      P = point;
      N = normal;
      objIndex = i;
      objPartIndex = intPartIndex;
      mat = intMat;
    }
    }
  }