[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 7@5}WNr  
DECLARE CYLINDER Cylinder001 Wfz&:J#  
BEGIN Cylinder001 Beqzw0  
Position = 0 0 -0.3 le`fRq8f&  
Vector_axis = 0 1 0 Js ~_8  
Radius = 0.2 =rGjOb3+  
Length = 60 ]^p6dbzWe  
Surface = SURFACE_LAMP YR^J7b\  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 *#w+*ywVZH  
<Zl}u:(w  
Color = 255 0 0 ~+7q.XL$$K  
END b+9M? k"  
D `c YQ-  
DECLARE SOURCE src 7NE"+EP\{2  
?V3e;n  
BEGIN src ??Q'| r  
geometry = Cylinder001 ~A(fn
:d  
emission = LAMBERT Z~[c65Nlu  
power = 200 M<4~ewWJ  
unit = Lumen B;@7  
spectrum = BLACKBODY 5000 k|'{$/n  
END M3!A?!BU  
DECLARE CURVE2D_CONIC MyCurve2DConic001 by (xv0v;  
BEGIN MyCurve2DConic001 1 \:5ow&a  
Position = 0 -0.8 TFjb1a,)  
Orientation = 1 0 buu~#m1z  
Radius = 1 Y/?V%X  
Conic = 0 a6cq0g[#z  
XMin = -1 hRHqG  
XMax = 1 Bf1,(^3XH  
END ZxFRE#y~2  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 '@i0~  
BEGIN MyVolumeExtrusion001 Zn0e#n  
Position = 0 30 0 pyJY]"UHVE  
Vector_I = 1 0 0 T)?:
q  
Vector_J = 0 0 1 DybuLB$f  
Generatrix = MYCURVE2DCONIC001 =bgzl=A`  
Length = 30 Is57)(^.-  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 7vZtEwC)n  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 q(xr5iuP_  
Color = 255 155 255 n.is+2t  
END S\5%nz\  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： UA4="/  
光源定义了光强、散射方式、光谱， J(>T&G;  
怎么没有定义光源的出光角度？