1. An apparatus for creating a virtual world data base, comprising: receiving means for receiving first, second and third polygon representations of respective first, second and third virtual objects in a virtual world; selecting means, coupled to said receiving means, for selecting a first edge of said first virtual object and for selecting a second edge of said second virtual object; and grouping means, coupled to the receiving means and the selecting means, for grouping said first and second virtual objects in the virtual world into a grouped object comprising said first and second virtual objects joined at an intersection of the first and second edges, the grouped object represented by at least one of a three-dimensional and rotatable wireframe objects and a three-dimensional and rotatable sweep polygon.