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············· <$'OSN`!
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macro 正文：········· f#UT~/~bL2
! centroid.zpl 9n "D/NZB
! m [FH>
! Written by Kenneth Moore 9/1/92 xTW$9>@\m
! Added TIMER function 4/18/96 @bj3 N
! ~vIQ-|8r:
TIMER E=Z .v
! PN n{ Rt
! The delta controls how many rays will be traced. A |,89zTk'
! delta of .025 will trace a 80 x 80 grid in the pupil. Jtxwt[
! 8D U |j-I8
delta = .025 fWywegh
! ^?H3:CS
print "This program computes the chief ray coordinates," 4b B)t#
print "centroid coordinates, and middle coordinates for" OXuBtW*,z+
print "the primary wave spot at each field position." Rj9YAW$
maxfield = maxf() R b~ NX
if maxfield == 0 then maxfield = 1
K$dSg1t
n = nsur() r-s.i+\
f = 1 0a??8?Q1G
label 1 W7lR 54%|
hx = fldx(f)/maxfield <m#ov G6
hy = fldy(f)/maxfield 6WQT ,@ ?
raytrace hx,hy,0,0 !>{` o/dZ
format 10.4 #?Z>o16,u
print O$
7R<V
print " X Field = ", fldx(f), ,=tPh4>
print " Y Field = ", fldy(f) ?6F\cl0.
print " X Chief = ",rayx(n), W0&NX`m
print " Y Chief = ",rayy(n) 8(e uW S
xraymax = -9e9 P"LbWZ6Nj
yraymax = -9e9 Uv~r]P )
xraymin = 9e9 =Vv"\p8
yraymin = 9e9 YzqUOMAt"V
xraytot = 0 fWKI~/eUY|
yraytot = 0 Ccld;c&+
numray = 0 -rSp gk0wL
numrayattempt = 0 ?H \K];
px = -1 - delta +,&8U&~`
label 2 VL5 GX (
px = px + delta 3: 'eZ cM
py = -1 - delta _H9.A I
label 3 v"VpE`z1#
py = py + delta ~.?,*q7
rad = px*px + py*py J|-X?V;ZW
if rad <= 0.9999999 t%$>
raytrace hx, hy, px, py : nZVP_d+
numrayattempt = numrayattempt+1 EIqe|a+
if !rayv(n) **************************** S: IhJQ4K
numray = numray + 1 !=7 (3< ?
x = rayx(n) zrqQcnx9(m
y = rayy(n) C:+-T +m[
if (x < xraymin) then xraymin = x ' XJ>;",[
if (x > xraymax) then xraymax = x hSQuML
if (y < yraymin) then yraymin = y 7JvBzD42
if (y > yraymax) then yraymax = y a\60QlAk~
xraytot = xraytot + x +>b~nK>M
yraytot = yraytot + y e5 /f%4YX
endif nKI]f`P7
endif =]k0*\PS
if py < 1.0 then goto 3 LO8`qq*rq
if px < 1.0 then goto 2 % ~eIx=s
if numray {O ]^8#v^
format 14.8 Ah5`Cnv
print " X Centroid = ",xraytot/numray, k1l\Rywp
print " Y Centroid = ",yraytot/numray cZB?_[Cp
print " X Middle = ",(xraymax+xraymin)/2, $T.u Iq
print " Y Middle = ",(yraymax+yraymin)/2 3 7 OU
format .0 5G$N
print " ",numray, " out of ", numrayattempt," rays made it through." vGe] ;
else { k CCpU
print " No rays made it through!" 77KB-l2
endif 2a=3->D&
f=f+1 (}Q(Ux@X
if f<= nfld() then goto 1 '3BBTr%aZ
print `1}WQS
print "All field positions done!" T_\Nvzb}
FORMAT 0.1 =' !E;
print "Elapsed time ", ETIM(), " seconds." ,%)O/{p_
