whathtml5andrestmeantothegeocommunity

whathtml5andrestmeantothegeocommunity内容摘要：

Augmented Reality framework • no plugins (except IE) • hardware accellerated • Google Maps uses WebGL 7 OGC 174。 copyright 169。 2020 Open Geospatial Consortium Thinking outside the Browser: Offline Web Apps • new offline storage APIs – Web Storage (also called Local Storage or DOM Storage) – Web SQL Database (or simply SQL Storage”) – IndexedDB – File Storage – no size limits! • online/offline events • Web Workers allow background activities to process API data, image analysis and other actions without impacting the performance of the main web browser39。 s user interface 8 OGC 174。 copyright 169。 2020 Open Geospatial Consortium Thinking outside the Browser: Web Sockets/Workers • Web Sockets provide a realtime two way interface between web browsers, servers and other data sources. Browsers no longer need to poll for information. Data can be pushed to the browser in realtime and then used instantly to update and manipulate objects var connection = new WebSocket(39。 [39。 soap39。 , 39。 xmpp39。 ])。 • use it when you need lowlatency: there have been HTTP workarounds to do this but they e with all the overhead。