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”。 P:`tL)W_ D7'P^*4_B 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： GMY"*J<E Normal Vector K):MT[ /" The Normal Vector is a vector in 3D space that is used to orient the projection W6b5elH@ plane for the irradiance map. The plane is defined to be perpendicular to the |_=o0l f Normal Vector, and the irradiance incident on the selected surface is projected d[b(+sHp a onto this plane. When the map is displayed, the normal vector is pointing toward T8ga)BA you. S\qYw(G Up Vector kF09t5 Lr The Up Vector is a vector in 3D space that is used to orient the projection plane m{U+aqAQK for the irradiance map. The plane is defined so that the Up Vector is parallel to the U~,~ GU=X vertical side of the plane. The irradiance incident on the selected surface is $LS$:%i4 projected onto this plane. When the map is displayed, the up vector will point r%*UU4xvB toward the top of the screen.