向量vectors设置问题，不清楚如何设置Normal and Up Vectors，你可以在Irradiance/Illuminance Options中选中"Automatically calculate Normal and Up Vectors”。 r1]shb%J? ng^`s}?o 另外，分析图的颜色和项目也可以在Irradiance/Illuminance Options中设置。
站长说的很对，补充一下： O+ ~.p Normal Vector bR"hl? &c The Normal Vector is a vector in 3D space that is used to orient the projection H*BzwbM? plane for the irradiance map. The plane is defined to be perpendicular to the Rl@k~;VV Normal Vector, and the irradiance incident on the selected surface is projected x2/L`q"M?= onto this plane. When the map is displayed, the normal vector is pointing toward
?UuJk you. [9| 8p$ Up Vector ]Ng K(I U The Up Vector is a vector in 3D space that is used to orient the projection plane 7/%{7q3G> for the irradiance map. The plane is defined so that the Up Vector is parallel to the Ad !=
*n vertical side of the plane. The irradiance incident on the selected surface is f.SV-{O_ projected onto this plane. When the map is displayed, the up vector will point r^3/Ltd5/ toward the top of the screen.