[求助]请教：光源旁边加反光罩后，在罩内无光线出来？？ [复制链接]

#define SURFACE_LAMP PERFECT_MIRROR 34.00 U0%m*i  
DECLARE CYLINDER Cylinder001 E[E[Za^Y  
BEGIN Cylinder001 Z )dz  
Position = 0 0 -0.3 ,c'a+NQ_t  
Vector_axis = 0 1 0 <y5f[HjLy  
Radius = 0.2 sy.U]QG  
Length = 60 4>xv7  
Surface = SURFACE_LAMP za@`,Yq  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 iv62Fs'  
"Hw%@  
Color = 255 0 0 h*-j  
END ;l6tZ]-"  
SRx `m,535  
DECLARE SOURCE src y~\K~qjd  
(j;6}@  
BEGIN src ?krgZ;Jj  
geometry = Cylinder001 ~ -hH#5  
emission = LAMBERT W
8 m*co  
power = 200 .5x+FHu7  
unit = Lumen *m[ow s  
spectrum = BLACKBODY 5000 bqDHLoB\1  
END Fv6<Cz6L  
DECLARE CURVE2D_CONIC MyCurve2DConic001 X%._:st  
BEGIN MyCurve2DConic001 cQMb+Q2Yw  
Position = 0 -0.8 SlZ>N$E  
Orientation = 1 0 :3x|U,wC  
Radius = 1 *OQr:e<}  
Conic = 0 kWgZIkY  
XMin = -1 l;dZJ_Ut$  
XMax = 1 bLysUj5[5  
END ?][2J
 
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 6*<=(SQI  
BEGIN MyVolumeExtrusion001 1wa zJj=v  
Position = 0 30 0 bVc;XZwI  
Vector_I = 1 0 0 v@0lTl_  
Vector_J = 0 0 1 mb\}F9  
Generatrix = MYCURVE2DCONIC001 Sh=Px9'i  
Length = 30 *$Df)iI6  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 :_
q  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 DVNGV   
Color = 255 155 255 l*|^mx^Q  
END \1[I(u  
:H$D-pbJ4  

粗看了一下： sD$ \!7:b  
光源定义了光强、散射方式、光谱， `~hAXnQK=  
怎么没有定义光源的出光角度？