' Positions of 1st 10 zeros in bj1(x)data3.83170597data7.01558668data10.17346814data13.32369194data16.47063005data19.61585851data22.76008438data25.90367209data29.04682854data32.18967991'dimzero(5)forj=1to5readzero(j)nextj'open"radial_grad.txt"foroutputas#1max_x=zero(5)np=10forj=0to4forp=0tonp-1x=zero(j)*(1-p/np)+zero(j+1)*p/npif(x=0)thenairy=1:elseairy=(2*bj1(x)/x)^2airy=airy^0.4:' Gamma function (increases brightness of low values)x0=x/max_x?#1,"<stop offset=";chr$(34);str$(x0);chr$(34);?#1," style=";chr$(34);"stop-color:#";h$=hex$(floor(255*abs(airy)+0.5),2)?#1,h$;h$;h$;chr$(34);"/>"nextpnextj?#1,"<stop offset=";chr$(34);"1";chr$(34);" style=";?#1,chr$(34);"stop-color:#000000";chr$(34);"/>"close#1end'' BesselJ1 function based on Javascript source code at' http://www.mhtl.uwaterloo.ca/old/courses/me3532/js/bessel.htmlsubbj1(x)ax=abs(x)if(ax<8.0)theny=x*xtmp=(-2972611.439+y*(15704.48260+y*(-30.16036606)))ans1=x*(72362614232.0+y*(-7895059235.0+y*(242396853.1+y*tmp)))ans2=144725228442.0+y*(2300535178.0+y*(18583304.74+y*(99447.43394+y*(376.9991397+y*1.0))))ans=ans1/ans2elsez=8.0/axy=z*zxx=ax-2.356194491ans1=1.0+y*(0.183105e-2+y*(-0.3516396496e-4+y*(0.2457520174e-5+y*(-0.240337019e-6))))ans2=0.04687499995+y*(-0.2002690873e-3+y*(0.8449199096e-5+y*(-0.88228987e-6+y*0.105787412e-6)))ans=sqrt(0.636619772/ax)*(cos(xx)*ans1-z*sin(xx)*ans2)if(x<0.0)thenans=-ansendifbj1=ansendsub
Linear gradient stops were generated with this program
open"linear_grad.txt"foroutputas#1forx=0to20xx=((20-x)/20)^2:' Create more stop colors in low intensity regiony=(xx)^0.4:' Gamma functionc$=hex$(floor(255*y+0.5),2)c$=c$+c$+c$print#1,"<stop offset=";chr$(34);str$(1-xx);chr$(34);print#1," style=";chr$(34);" stop-color:#";c$;chr$(34);"/>"nextxclose#1end
Licencia
Public domainPublic domainfalsefalse
Este trabajo ha sido liberado al dominio público por su autor, Sakurambo de Wikipedia en inglés. Esto aplica para todo el mundo. En algunos países esto puede no ser legalmente factible; si ello ocurriese: Sakurambo otorga a cualquier persona el derecho de usar este trabajo para cualquier propósito, sin ningún tipo de condición, a menos que éstas sean requeridas por la ley.Public domainPublic domainfalsefalse
Registro original de carga
Aquí se muestra la página de descripción original. Los siguientes nombres de usuario se refieren a en.wikipedia.
2008-07-09 14:17 Sakurambo 283×210× (5677 bytes) xml errors fixed
2008-07-09 14:15 Sakurambo 283×210× (5698 bytes) better version (gradients calculated in software)
2008-07-08 10:42 Sakurambo 283×210× (3756 bytes) {{Information |Description=vectorized version of [[:Image:Airy-pattern.png]] |Source=I created this work entirely by myself. |Date=2007-07-08 |Author=~~~ |other_versions=[[Image:Airy-pattern.png|100px]] }}
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{{Information |Description={{en|vectorized version of en::Image:Airy-pattern.png}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia]<br/> (Original text : ''Created in en:Adobe Illustrator and then edited to incorporate gradie...