最近闲的无聊，看zemax的macro 下面有个宏里自带的macro，原样附下，讨论下标记为 ****************************的作用，为什么要以渐晕为判断标准，这个渐晕的真正作用是干什么的？附下RAYV（）->如果无渐晕则为0，否则为渐晕面的编号。(0 if ray was not vignetted,else vignetted surface number.valid only after a RAYTRACE or RAYTRACEEX call)。若大神赐教，小弟感激流涕············· (j ;6}@
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macro 正文：········· H:HJHd"W
! centroid.zpl .5x+F Hu7
! .\> I-
! Written by Kenneth Moore 9/1/92 zWh[U'6
! Added TIMER function 4/18/96 -dn \ *n5
! hup< U+p
TIMER 9
6'{ES9D
! Gp/yr
! The delta controls how many rays will be traced. A e .|_=Gd2/
! delta of .025 will trace a 80 x 80 grid in the pupil. 3yfq*\_uXw
! D,r s)
delta = .025 c{u~=24;%#
! z@0*QZ.y 1
print "This program computes the chief ray coordinates," Ysk,9MR(F
print "centroid coordinates, and middle coordinates for" H `V3oS~}
print "the primary wave spot at each field position." Gq/f|43}@O
maxfield = maxf() n8 eR?'4
if maxfield == 0 then maxfield = 1 'B>%5'SdD
n = nsur() Z) zWfv}
f = 1 %?3\gFvBo
label 1 N}3$1=@Y
hx = fldx(f)/maxfield |E)Es!dr
hy = fldy(f)/maxfield t zhkdG
raytrace hx,hy,0,0 \&p MF
format 10.4 N@ >,gm@UU
print #D$vH
print " X Field = ", fldx(f), ji[O ?
print " Y Field = ", fldy(f) x^| J-
print " X Chief = ",rayx(n), *kXSl73 k
print " Y Chief = ",rayy(n) 7lvUIc?krW
xraymax = -9e9 <z *SO
a
yraymax = -9e9 S3=M k~_&
xraymin = 9e9 Uk02VuS
yraymin = 9e9 G w$sL&1m\
xraytot = 0 y4HOKJxI
yraytot = 0 zOpl#%"
numray = 0 6N&S3<c4JO
numrayattempt = 0 2@
>04]
px = -1 - delta *@q+A1P7@
label 2 ~O)Uz|
px = px + delta y#AwuC K
py = -1 - delta NW`.RGLI<
label 3 :4 "SJ
py = py + delta U/2g N
H
rad = px*px + py*py }TZ5/zn.Dw
if rad <= 0.9999999 7 N ? x29
raytrace hx, hy, px, py Op h4&Ip[w
numrayattempt = numrayattempt+1 fn zj@_{|
if !rayv(n) **************************** )*I=>v.Jq
numray = numray + 1 X3DXEeBEL
x = rayx(n) oQC* d}_E}
y = rayy(n) K2TO,J3 E
if (x < xraymin) then xraymin = x hv'~S
if (x > xraymax) then xraymax = x h 94SLj]
if (y < yraymin) then yraymin = y OYJy;u3 "
if (y > yraymax) then yraymax = y
';x .ry
xraytot = xraytot + x @^y/V@lDm
yraytot = yraytot + y N7%+n*Z
endif 6u3DxFiTm
endif 5#.u A_Fov
if py < 1.0 then goto 3 N 5rY*S
if px < 1.0 then goto 2 _F^k>Lq& d
if numray =z]&E 78Y
format 14.8 0Ng6Xg(QHc
print " X Centroid = ",xraytot/numray, ~F*pV*
print " Y Centroid = ",yraytot/numray aC>r5b#:
print " X Middle = ",(xraymax+xraymin)/2, X6 ~y+ R
print " Y Middle = ",(yraymax+yraymin)/2 ]<q{0.
format .0 V; 1r
print " ",numray, " out of ", numrayattempt," rays made it through." Wxg,y{( `
else pr\yc
print " No rays made it through!" YH^_d3A;
endif `LnL d;Z
f=f+1 .b]g# Du=
if f<= nfld() then goto 1 v@;:aN
print <pGPuw|~I
print "All field positions done!" Z!C\n[R/
FORMAT 0.1 x{u_kepv[k
print "Elapsed time ", ETIM(), " seconds." 6h Yv
