This plugin simply loads an external 3D model and optionally places it at map coordinates.
<model name ="model" driver="simple"> <url>../data/red_flag.osg.100,100,100.scale</url> <location>-74.018 40.717 10</location> </model>
url: External model to load location: Map coordinates at which to place the model. SRS is that of the containing map. paged: If true, the model will be paged in when the camera is within the max range of the location. If false the model is loaded immediately.
simple_model.earthsample in the repo