English

Problem: Display quality of scene is poor if extent has large magnitude coordinates

Description

The display quality of a scene is poor when its extent contains coordinates of large magnitude. Objects appear to flicker and incorrect hidden surface removal is evident.

Cause

Large coordinates, such as UTM, require double precision support but 3D graphics engines support only single precision.

Solution or Workaround

Use on-the-fly projection to set false easting and northing values to center the scene on 0,0. To do this, take the scene's center XY coordinates and subtract them from the existing false easting and northing values of the scene's spatial reference.