足跡 (2026/3/31)

https://scrapbox.io/files/69cbdb809ea0767ac85ee126.mp4

code:processing

//#Processing

float x, y, r;

int t;

void setup() {

size(800, 800);

background(-1);

frameRate(2);

}

void draw() {

fill(-1, 30);

square(-1, -1, 802);

fill(0);

r=TAU*noise(x/400, y/400);

f(x, y, r);

if (abs(x+=50*cos(r))>400)x*=-1;

if (abs(y+=50*sin(r))>400)y*=-1;

t++;

}

void f(float p, float q, float r) {

push();

translate(p+400, q+400);

rotate(r+PI/2);

translate(t%2*50, 0);

ellipse(0, 0, 15, 12);

for (float i=0; i<4; i++)ellipse(i*8-12, abs(i-1.5)*8-20, 3, 5);

pop();

}