June 2012
Beginner to intermediate
268 pages
8h 59m
English
Content preview from Shadow Algorithms Data Miner
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100 3. Supporting Shadows for Other Geometry Types
values—at a given point, the check for maximum height values uses high resolu-
tions for close-by grid pixels and lower resolutions for far-away grid pixels. us,
the details close by are not lost, and the far-away details are blurred to generate
so shadows, so extreme accuracy is not as crucial. See a rendering result in Fig-
ure 3.18. Timonen and Westerholm [586] also accelerate the computation of the
horizon angles, by being able to reuse neighboring grid pixels’ height and horizon
angles as guide for the current pixel’s horizon angle.
3.8.3 Trends and Analysis
Most of the industry soware do n
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