message: reset camera for old sg files
diff: @@ -240,11 +240,16 @@ OSPSG_INTERFACE void importScene(
  if (!context->optCameraRange.lower && j.contains("camera")) {
  auto cameraJ = j["camera"];
  + if (cameraJ.contains("cameraToWorld")) {
  affine3f cameraToWorld = cameraJ["cameraToWorld"];
  context->cameraView = std::make_shared<affine3f>(cameraToWorld);
  + if (cameraJ.contains("cameraIdx"))
  context->cameraIdx = j["camera"]["cameraIdx"];
  if (cameraJ.contains("cameraSettingsIdx"))
  context->cameraSettingsIdx = j["camera"]["cameraSettingsIdx"];
  + } else
  + std::cerr << "scene file incompatible with versions later than v0.9.0\n"
  + << "resetting camera\n";
  context->updateCamera();
  }
  