message: add 'up' vector options to 'Camera' menu
diff: @@ -620,6 +620,21 @@ namespace ospray {
  resetView();
  if (ImGui::MenuItem("Create Default View"))
  resetDefaultView();
  +
  + ImGui::Separator();
  +
  + if (ImGui::BeginMenu("Edit 'up' vector")) {
  + if (ImGui::MenuItem("+/- x (X)"))
  + viewPort.setViewUpX();
  + if (ImGui::MenuItem("+/- y (Y)"))
  + viewPort.setViewUpY();
  + if (ImGui::MenuItem("+/- z (X)"))
  + viewPort.setViewUpZ();
  + ImGui::EndMenu();
  + }
  +
  + ImGui::Separator();
  +
  if (ImGui::MenuItem("Reset Accumulation"))
  viewPort.modified = true;
  if (ImGui::MenuItem("Print View"))
  