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marycn80:virtual focus 是以點(diǎn)光源設(shè)計時的焦點(diǎn)位置,有些廠家的光源文件坐標(biāo)原點(diǎn)與焦點(diǎn)不重合,所以特別指出了virtual focus 的位置以便定位準(zhǔn)確。我是這么理解的,謝謝 !~ (2016-05-25 09:55) J#Bz)WmR
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