[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 X::JV7hu  
DECLARE CYLINDER Cylinder001 t ;;U}
 
BEGIN Cylinder001 IqaT?+O\?r  
Position = 0 0 -0.3 v!6  c0a  
Vector_axis = 0 1 0 w!-gJmX>  
Radius = 0.2 5oW!YJg  
Length = 60 \5:i;AE  
Surface = SURFACE_LAMP xw,IJ/E$1  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 KE5kOU;  
a`E#F]Z  
Color = 255 0 0 +US!YU  
END !Y0Vid  
Iby\$~V  
DECLARE SOURCE src .\ULbN3Z  
TOB-aAO  
BEGIN src mI-]/:  
geometry = Cylinder001 S]e|"n~@  
emission = LAMBERT )Xz,j9GzJS  
power = 200 OUPUixz2Z  
unit = Lumen {tuYs:  
spectrum = BLACKBODY 5000 .PIL +x*]N  
END np"\19^  
DECLARE CURVE2D_CONIC MyCurve2DConic001 ~F|+o}a`  
BEGIN MyCurve2DConic001 A@!qv#'  
Position = 0 -0.8 zII|9
y  
Orientation = 1 0 u"cV%(#  
Radius = 1 +K:
Dx!9  
Conic = 0 }_M~2L?i  
XMin = -1 y*jp79G  
XMax = 1 /!yU!`bY  
END ,GbR!j@6  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 ,F8Yn5h  
BEGIN MyVolumeExtrusion001 )1J R#  
Position = 0 30 0 _lJ!R:*  
Vector_I = 1 0 0 sk<3`x+  
Vector_J = 0 0 1 *Mh
RW,=  
Generatrix = MYCURVE2DCONIC001 by1<[$8r  
Length = 30 shy-Gu&  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 qdJ=lhHM}  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 .LnGL]/  
Color = 255 155 255 Eak$u>Fd8c  
END w>s,"2&5J  
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粗看了一下： Wa>}wA=v  
光源定义了光强、散射方式、光谱， 9rA0lqr]5  
怎么没有定义光源的出光角度？