In the digital city, creating and displaying human animation is a significant problem. This paper describes two applications of human walking animation: pedestrian as avatars and pedestrians as crowds of people. Animating controlled avatars which start, stop, and turn interactively makes it possible to realize the digital city, we describe how to build a walking motion generation module to create plane walking animation. Animating a large number of avatars or virtual bodies is expensive and is a serious barrier to enhancing the digital city. We describe a method that offers cost-effective animation. This method divides the figures in the scene into far and near groups. The movements of the former are updated less often. The proposed methods can produce computer animation scenes rapidly that still offer good animation quality.