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距離衰減與半球踩樣
Author:
WC
GeoGebra
假設有1個正方形光源CDEF 當Zvalue變大,代表光源遠離shading point(畫面上的O)愈遠 這樣一來半球上,能「採樣」到光源的區域就會變小 (可以觀察物件區的Area、solidangel) Area和solidangel都會隨Zvalue變化 而且當Zvalue值愈大,Area和solidangel差異愈小 備註: 「採樣」指的是,從O往半球方向上發射射線 擊中物體表面後,取得Li
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