Rotating Squares

rotatingsquares.py

BG = 1500

NSQUARES = 50

SQUARESIZE = 2000

NFRAMES = 96

TOTALROTATION=15

for frame in range(NFRAMES):
    
    newPage(BG,BG)
    frameDuration(1/24)
    
    phase = 2 * pi * frame / NFRAMES #angle in radians
    print sin(phase)
    
    #perfectly distribute rotation across frames 

    STARTANGLE = TOTALROTATION * sin(phase)     
    ENDANGLE = TOTALROTATION * sin(phase +0.5*pi)

    fill(0)
    stroke(1)
    strokeWidth(10)
    
    #generate pile of squares
    translate(BG/2, BG/2)
    for i in range (NSQUARES+1):
        SQUARESIZE = SQUARESIZE
        f = i/NSQUARES
        save()
        rotate(STARTANGLE + f*(ENDANGLE-STARTANGLE))
        rect(-SQUARESIZE/2, -SQUARESIZE/2, SQUARESIZE, SQUARESIZE)
        scale(0.9, 0.9)
        
saveImage("rotatingsquares.mp4")

#made after Just van Rossum's tutorial: https://vimeo.com/149247423