ArcObjects Library Reference (Carto)  

esriSymbolRotationType Constants

Marker symbol rotation options.

Constant Value Description
esriRotateSymbolGeographic 0 Clockwise rotation with 0 at the positive y-axis.
esriRotateSymbolArithmetic 1 Counter clockwise rotation with 0 at the positive x-axis.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.