Inspired by Sasj Geometric Animations 160308. Click "View Source" to see the processing code.

// http://sasj.tumblr.com/post/140699898085/geometric-animations-160308

float T = 0;

void setup() { size(512,512); frameRate(25); }

void draw() { background(0); stroke(128); strokeWeight(7);

    pushMatrix();
    translate(256,256);

    T -= 0.04;

    boolean cycle = false;

    for(float x = -128, phase = 0 ; x <= 128 ; x += 32, phase += PI/3, cycle = !cycle)
    {
        for(float y = -160, t = T; y <= 160 ; y += 16, t += PI/12)
        {
            float w = cycle
                ? 20 * sin(-t + phase)
                : 20 * sin(t - phase);

            stroke(cycle ? 128 : 64);

            line(
                x - w, y + (cycle ? 8 : 0),
                x + w, y + (cycle ? 8 : 0)
            );
        }
    }

    popMatrix();

}

Processing 2016 Art

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Last update: November 8, 2020