nice_video_for_nasser.pyde

"""
Example of Video Capture on Processing Python Mode
"""
add_library('video')
add_library('pdf')
cell_size = 16  # cell size
save_pdf = False

def setup():
    global cols, rows, video
    size(640, 480)
    noStroke()
    smooth()
    rectMode(CENTER)
    cols = int(width / cell_size)
    rows = int(height / cell_size)
    video = Capture(this, width, height)
    video.start() 
    background(0)


def draw():
    global save_pdf
    if video.available():
        if save_pdf: # if you press 'p'
            fill(0)
            rect(0, 0, width, height)
            beginRecord(PDF, "Image.pdf")
        background(0)
        video.read()
        video.loadPixels() # makes video.pixels available
        for i in range(cols):
            for j in range(rows):
                x = i * cell_size
                y = j * cell_size
                loc = x + y * video.width
                px_color = video.pixels[loc]
                # px_color = video.get(x, y) # slower but the same as previous line
                tam = map(brightness(px_color), 0, 255, 0, cell_size - 1)
                sat = saturation(px_color)
                colorMode(HSB)
                fill(sat, 255, 255)
                rect(x + cell_size / 2, y + cell_size / 2, tam, tam)
        if (save_pdf):
            endRecord()
            println('gravado arquivo imagem.pdf')
            save_pdf = False


def keyPressed(self):
    global save_pdf
    if key == 'p':
        save_pdf = True