<cache_only> Element

(Documentation :: Earth Files?)

The <cache_only> element controls whether or not osgEarth will run completely off of the cache. This is useful for running in a "cache-only" mode if you want to populate your local cache and run completely offline. By default, the <cache_only> is false. Setting its value to true will inform osgEarth to use cached data exclusively.

You can also setting the OSGEARTH_CACHE_ONLY environment to put osgEarth in cache only mode. The presence of this environment variable will override any settings in Earth files.

Example:

<map name="MyMap" type="geocentric">
  <!--Add a TMS image source-->
  <image name="TMS" driver="tms">
    <url>http://labs.metacarta.com/wms-c/Basic.py/1.0.0/satellite/</url>  
    <format>jpeg</format>
    <tile_size>256</tile_size>
  </image>

  <cache type="tilecache">
    <path>c:/osgearth_cache</path>
  </cache>

  <!--Run completely off of the cache-->
  <cache_only>true</cache_only>
</map>

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