알고리즘 아트

ProgrammingProcessing
Processing

어디서 본 그림인데 기억이 안난다.

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void setup() {
    size(500, 500);
    background(255);
    smooth();
    noFill();
    noLoop();
    ellipseMode(RADIUS);
}
void draw() {
    rule1(width / 2, height / 2, 400);
    blend(createCircleMask(200), 0, 0, width, height, 0, 0, width, height, ADD);
}
void rule1(float x, float y, float r) {
    if (r < 25) {
        return;
    }
    strokeWeight(r / 100);  
    ellipse(x, y, r, r);
    float hr = r / 2;
    rule1(x, y, hr);
    for (int t = 30; t < 360 + 30; t += 60) {
        float c = hr * cos(radians(t));
        float s = hr * sin(radians(t));
        rule1(x + c, y + s, hr);
    }
}
PGraphics createCircleMask(float r) {
    PGraphics mask = createGraphics(width, height);
    mask.beginDraw();
    mask.background(255);
    mask.noStroke();
    mask.fill(0);
    mask.ellipseMode(RADIUS);
    mask.ellipse(width / 2, height / 2, r, r);
    mask.endDraw();
    return mask;
}
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