OO MODEL OF STAR DETECTOR FOR SIMULATION, VISUALIZATION AND RECONSTRUCTION.

The Solenoidal Tracker At RHIC (STAR) is a large acceptance collider detector, at Brookhaven National Laboratory. Most of the detailed knowledge on the STAR detector is implemented into a GEANT3 based simulation model. This knowledge certainly is valuable for the new STAR OO software. STAR ROOT-based framework was upgraded to provide tools to access this model via a set of TVolume classes. In this paper we present our experience with migration of the GEANT3 based detector simulation for STAR to an OO model