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Julia Fractal

This is an advanced Game-Editor Drawing Demo - meaning only the C-scripts are provided and you should already know the mechanics of starting a canvas actor, adding scripts, etc. If you are not at this level, please see the Let's DRAW! Basic Drawing Tutorial.

JULIA FRACTAL

// Simple Julia Fractal
// Based on C code by Karthik Narayanaswami
// http://www.metlin.org/graphics/fractals.html

int sx=320;
int sy=240;
double xmin=-2;
double xmax=1.25;
double ymin=-1.25;
double ymax=1.25;
double maxiter=512;

double old_x;
double fx,fy;
double ix=0.42;
double iy=0.23;
int m;

double dx=(xmax-xmin)/sx;
double dy=(ymax-ymin)/sy;

int px;
int py=0;
double x1;
double y1=ymin;

while (py<sy) {
px=0;
x1=xmin;
py++;
while (px<sx) {
px++;

fx=x1;
fy=y1;
m=0;
do {
old_x=fx;
fx= fx*fx - fy*fy + ix;
fy= 2*old_x*fy + iy;
m++;
} while (((fx*fx+fy*fy)<4) && (m<maxiter));

setpen(m,m,m,0,1);

putpixel(px-75,py+30);
x1+=dx;
}
y1+=dy;
}

Fractals
The frontier where Art and Science meet.

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