[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 ^?Mp(o  
DECLARE CYLINDER Cylinder001 9OV@z6
  
BEGIN Cylinder001 3i7E
F.  
Position = 0 0 -0.3 Z3weFbCH  
Vector_axis = 0 1 0 ":8\2Qp  
Radius = 0.2 ;aV3j/  
Length = 60 g{Al
:}u>  
Surface = SURFACE_LAMP ^S3G%{"  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 9zb1t1[W  
w8w0:@0(  
Color = 255 0 0 (0H=f6N  
END mpug#i6q  
CYLab5A  
DECLARE SOURCE src [9${4=Kq  
b9RHsr]
V  
BEGIN src vII{i  
geometry = Cylinder001 &F uPd}F  
emission = LAMBERT aL4^ po  
power = 200 D9[19,2r`  
unit = Lumen hNM8H  
spectrum = BLACKBODY 5000 n82tZpn  
END [M[<'+^*  
DECLARE CURVE2D_CONIC MyCurve2DConic001 12z!{k7N  
BEGIN MyCurve2DConic001 8&G9 ?n`I5  
Position = 0 -0.8 v?O
VhV  
Orientation = 1 0 p
E&G]ZC  
Radius = 1
\Q|-Npw  
Conic = 0 3e&+[j  
XMin = -1 `P;r[j"  
XMax = 1 RJ'[m~yl5X  
END "-$}GUK?Z  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 OUi;f_
*[r  
BEGIN MyVolumeExtrusion001 l.o/H|  
Position = 0 30 0 KsP2./N  
Vector_I = 1 0 0 T0tX%_6`  
Vector_J = 0 0 1 Ze~P6  
Generatrix = MYCURVE2DCONIC001 d\JaYizp  
Length = 30 Q;$k?G=l  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 QQS*r}>  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 v:P]o9Oj8  
Color = 255 155 255 %=UD~5!G0  
END ik(Du/  
TRGpE9i  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： _"1RidhH  
光源定义了光强、散射方式、光谱， &>zH.6%$  
怎么没有定义光源的出光角度？