compute unique frameId for an animation frame, allows browser caching
compute unique frameId for an animation frame, allows browser caching

radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,mkeilman/sirepo,mrakitin/sirepo,radiasoft/sirepo,mrakitin/sirepo,mkeilman/sirepo,mrakitin/sirepo,mkeilman/sirepo,radiasoft/sirepo,mrakitin/sirepo,radiasoft/sirepo