Julia set: Difference between revisions

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</pre>
 
==={{header|Amazing Hopper}}===
 
Program made with the Basic-Hopper embedded version, using the tag "#hl {}".
The generated file is binary, and the graph can be made with Matlab's "imshow" function.
 
<lang basic>
#!/usr/bin/hopper
 
#include <hopper.h>
 
main:
 
hxres = 500 // horizontal resolution
hyres = 500 // vertical resolution
 
itermax = 100 // maximum iters to do
 
brk_out = 64 // |z|^2 greater than this is a breakout
magnify = 1 // 10 is standard magnification, but if > 2, resolution should be greater than 500
 
cr = -0.8 // real part of c in z^2=z^2+c
ci = 0.156 // imaginary part of c in z^2=z^2+c
 
julia=0,{hxres,hyres}nanarray(julia)
 
{","}toksep
#hl{ // tag "high-level", Basic language embebed in Hopper
 
hy=1
while(hy<=hyres)
hx=1
while(hx<=hxres)
y = 4*((((hyres+1-hy-0.5)/hyres)-0.5)/magnify)
x = 4*((((hx-0.5)/hxres)-0.5)/magnify)
zm = 0
iter=1
 
while(iter<=(itermax-1))
xx = sqrdiff(x,y)+cr //(x*x)-(y*y)+cr
y = (2.0*x*y)+ci
x = xx
zsq = sqradd(x,y) //(x*x)+(y*y)
 
if (zsq>zm)
zm=zsq
endif
if (zsq>brk_out)
break
endif
iter += 1
wend
 
if (iter>=itermax)
julia[hy,hx]=1
 
else
julia[hy,hx]=0
 
endif
 
hx+=1
wend
hy+=1
wend
}
toc(t1,t2)
{julia,"julia.dat"}save
exit(0)
</lang>
 
=={{header|AWK}}==
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