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float thold = 5;
float spifac = 1.05;
int outnum;
float drag = 0.01;
int big = 500;
ball bodies[] = new ball[big];
float mX;
float mY;
void setup() {
size(900, 450);
strokeWeight(1);
fill(255, 255, 255);
stroke(255, 255, 255, 5);
background(0, 0, 0);
smooth();
for(int i = 0; i < big; i++) {
bodies[i] = new ball();
}
}
void draw() {
if(keyPressed) {
saveFrame("Focus " + outnum);
outnum++;
}
if(mousePressed) {
background(0, 0, 0);
mX += 0.3 * (mouseX - mX);
mY += 0.3 * (mouseY - mY);
}
mX += 0.3 * (mouseX - mX);
mY += 0.3 * (mouseY - mY);
for(int i = 0; i < big; i++) {
bodies[i].render();
}
}
class ball {
float X;
float Y;
float Xv;
float Yv;
float pX;
float pY;
float w;
ball() {
X = random(screen.width);
Y = random(screen.height);
w = random(1 / thold, thold);
}
void render() {
if(!mousePressed) {
Xv /= spifac;
Yv /= spifac;
}
Xv += drag * (mX - X) * w;
Yv += drag * (mY - Y) * w;
X += Xv;
Y += Yv;
line(X, Y, pX, pY);
pX = X;
pY = Y;
}
}
$WEN
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