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Chapter 4
Run-Time Frameworks
contribution to the state of the art, still used a series of sliders set empirically by the
user to control the relative importance of the various benefit factors. Later systems,
by Mason and Blake and by Gobbetti and Bouvier, extended the Funkhouser-S4quin
model to hierarchical and continuous LOD, but continued to rely on a fundamentally
heuristic and ad hoc model of visual importance. Such a system has many drawbacks.
For example, a user must have a fair amount of expertise in setting the various sliders,
and those settings may not apply correctly to a different 3D scene, rendering scenario,
or rendering ...