Possible solution to Just's puzzle?


  • admin

    0_1515837720190_blob.png

    https://twitter.com/justvanrossum/status/952108619159531520

    # a possible solution to Just's puzzle?
    size(1000,1000)
    fill(0)
    dia = 864
    rect(0,0,width(),height())
    for d in range(1, dia):
        d = dia-d
        fill((dia-d)/dia)
        oval(350-.5*d, 750-.5*d, d, d)
        oval(650-.5*d, 250-.5*d, d, d)
    


  • @erik Very close. Ready for spoilers?



  • Something like that ?

    fill(math.sqrt((dia-d)/dia))
    

    0_1515849423774_Just.jpg



  • @jeremiehornus Oh, that looks lovely! But no, what I did was way stupider in some way...



  • A silly question but do we see the circles as bubbles melting together simply because they are put on the canvas alternately?

    I guess you could also use the "Lighten" blending mode and just fill the circles with gradients.



  • @justvanrossum building on @erik solution:
    0_1515856408012_Just2.gif

    import random, math, noise
    
    w = 500
    h = 500
    
    dia = 100
    rows = 5
    cols = 5
    ovals = []
    
    frames = 30
    
    for x in range(1, rows):
        for y in range(1, cols):
            ovals.append((x*(w/rows), y*h/cols, 1+.5*random.random()))
    
    for f in range(frames):
        newPage(w, h)
        frameDuration(1/20)
        fill(0)
        rect(0,0,width(),height())
        n = f/frames
        for d in range(1, dia):
            d = dia-d
            fill(.9*math.sqrt((dia-d)/dia))
            
            for i, (x, y, g) in enumerate(ovals):
                m = noise.pnoise3(.1*x/w, .1*y/h, i+ .5*math.sin(2*math.pi*(f/frames)))
                oval(20*m + x-.5*d*g*(1+m), 20*m +  y-.5*d*g*(1+m), d*g*(1+m), d*g*(1+m))
    
    saveImage("Just2.mp4")
    


  • How about a radialGradient()? 🙂

    0_1515857244132_radgrad.jpg

    size(1000, 1000)
    fill(0)
    dia = 864
    offset = 120
    rect(0, 0, width(), height())
    for d in range(1, dia, 5):
        d = dia-d
        radialGradient((350-offset, 750+offset),
                (350-offset, 750+offset), [(1,), (0,)],
                startRadius=5, endRadius=0.7*dia)
        oval(350-.5*d, 750-.5*d, d, d)
        radialGradient((650-offset, 250+offset),
                (650-offset, 250+offset), [(1,), (0,)],
                startRadius=5, endRadius=0.7*dia)
        oval(650-.5*d, 250-.5*d, d, d)
    


  • But I must say I really love the foggy effect of @JeremieHornus's solution.



  • An example with blendMode("lighten") and radialGradient() building on @justvanrossum example.

    0_1515859634406_blendMode.png

    size(1000, 1000)
    fill(0)
    dia = 864
    offset = 120
    rect(0, 0, width(), height())
    d = 1200
    
    blendMode("lighten")
    
    radialGradient((350-offset, 750+offset),
            (350-offset, 750+offset), [(1,), (0,)],
            startRadius=5, endRadius=0.7*dia)
    oval(350-.5*d, 750-.5*d, d, d)
    
    radialGradient((650-offset, 250+offset),
            (650-offset, 250+offset), [(1,), (0,)],
            startRadius=5, endRadius=0.35*dia)
    oval(650-.5*d, 250-.5*d, d, d)
    

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