gwaldron/osgearth — pull request #275 by aurelien35 (2012-12-13 07:59:05+00:00)
Title: Modified elevation query to use the same interpolation method as the map.

Without this parameter, in some situations results are visually incorrect : for example when you set the map elevation interpolation to "Nearest", the features are still clamped with an "Linear" interpolation, which leads to inconsistencies at extruded features bottom.