HI Zeki, On 6 February 2013 11:56, Zeki Yugnak <[email protected]> wrote: > I am using double precision. X,y,z coordinates are over million in ECEF > coordinate system after converting from lats/long/height. I supposed that > graphic card is giving rounding off error and there is flickering on object > motion in OSG.
If the database is created correctly and the camera position is computed correctly your shouldn't see visible jitter. Have a look through the achives on this topic we've written about it many times. I touched on it my previous reply, but you do need to go and do the back research to understand the topic. > So I want to use different coordinate system that is between world and local > coordinate system. I am calculating all recorded object coordinates according > to origin point and the origin point is the center of the terrain in > geographic coordinate system (lats/long/height). I am using Delta3D's > GeoCoordinate class for calculation. class reference link is below; > > http://www.delta3d.org/api/api_2.0/classdt_terrain_1_1_geo_coordinates.html > > I need to use different coordinate system that is between world and local > coordinate systems for smooth motion displaying (without flickering). I hope > that my problem is clear now. I don't know Delta3D personally, if you are using Delta3D classes then it's best to ask the question with the Delta3D community. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
