AnalyticalGraphicsInc/cesium — pull request #185 by pjcozzi (2012-08-28 17:37:02+00:00)
Title: Material position-to-eye coordinate system change

Branched from pull request #183. Review and merge that first.

This changes the position-to-eye vector that is input to the material system from world coordinates to eye coordinates since most - well, all current - users are already working in eye coordinates. Material needing the vector in world coordinates now transform it with `czm_inverseViewRotation`.