1[1]Erwig M, Gueting R H, Schneider M, Vazirgiannis M. SpatioTemporal Data Types: An Approach to Modeling and Querying Moving Objects in Databases. GeoInformatica Journal, Kluwer Publishers, 1999
3[3]KCDw kitchen design web site. http://www. KCDw. com/3d.btm
4[4]Melster R, Diaz A,Groth B. SCORE - The virtual museum, development of a distributed, object-oriented system for 3D realtime visualisation:[Technical report 1998-15]. TU Berlin, Germany. Oct. 1998
5[5]My Virtual Model web site. http://www. mvm. com
6[6]Virtual Worlds, room planning and visualisation software.http://www. luk. net/virtual