June 2012
Beginner to intermediate
268 pages
8h 59m
English
Content preview from Shadow Algorithms Data Miner
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6 1. Preliminaries of Shadows
point light
occluder
hard shadow
occluder
hard shadow
directional light
Fi gure 1.7. Point (le) and directional (right) light casting hard shadows.
Soft Shadows
e other type of shadow is a so shadow, or the inclusion of a penumbra region
along with the umbra for a higher level of quality resulting from an extended light
source (although there can be cases of the combination of light and object positions
where the umbra or the penumbra may not be visible). Full occlusion from the light
causes the umbra region, and partial occlusion from the light causes the penumbra
region. e degree of partial occlusion from the light results ...
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