macro里面編輯了格點(diǎn)光源的屬性和參數(shù)，出現(xiàn)警告：沒有可追跡光源   請問如何解決？ !DkIM}.  
附macro語句： 2[CHiB*>  
(raytrace:set-grid-orientation-direction-vectors (gvector 0 0 -1)     (gvector 0 1 0)) 2@Zw#2|
]  
   (raytrace:set-beam-angular-profile-solar) LYke\/ md  
   (raytrace:set-beam-angular-weighting-uniform-flux) +,zV [\  
   (raytrace:set-beam-orientation-perpendicular) .1f!w!ltVR  
(raytrace:grid) J6mUU3F9f  
  ;Select the surface of the sphere %RIlu[J  
   (edit:select (body:find-face (entity 9) (gvector 0 0 -1))) re fAgS!=q  
(analysis:irradiance) p+;;01Z+_  
求賜教，感激涕零�。�！ n(