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Color Plate 3
Figure 2.6 Recent direct-manipulation virtual environments
(a) Virtue (Daniel Reid, 1999, www-pablo.cs.uiuc.edulPro-
jectNRNirtue) enables software developers to directly ma-
nipulate software components and their behavior.
(b), (c) Crayoland (Dave Pape, www.ncsa.uiuc.eduNis/) is an interactive virtual environment where the child
in the image on the right uses a joystick to navigate through the space. The child is interacting with an avatar in
the flower world.
