岩と湖 (2024/12/10)

code:processing

//#Processing

float r, i, a, b, t, x, y, c=5, d=2, f=400, n;

void setup() {

size(800, 800, P3D);

strokeWeight(2);

}

void draw() {

background(0);

camera(f, f, f, 0, 0, 0, 0, 0, -1);

for (x=-f; x<f; x++)for (y=-f; y<f; y++) {

r=i=n=0;

a=x/f-1;

b=y/f;

while ((r*r+c*c*c*i*i<4)&n<256) {

t=r*r-i*i+a;

i=d*r*i+b;

r=t;

n++;

}

if (n<255) {

stroke(sq(n)%256);

} else {

stroke(0, 0, 180-c*50);

}

point(x, y, -(sq(n)%256)/5);

}

if (c>-5)c-=.1;

else d*=1.01;

}