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Now let's look at a visualization of the algorithm in progress. This is
a reduction from about 450 thousand elements to 10 thousand elements.
Each bar representations an iteration of the algorithm. The worst
quality elements are toward the top of the bar. The elements have been
colored by action selected. Early on many edge collapse operations are
performed to quickly reduce the size of the model. As the target count
is approached the number of elements which cannot be modified within the
allowable error increases as the mesh is optimized.
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