Python3_3Dgraphing

from random import random
from turtle import Turtle
from colorsys import hsv_to_rgb

from math import sin, ceil, cos, pi


rectsPerPen = 100
rectSize = 100
equation = lambda x, y, time: (sin(y) + cos(x) + time) % 2 / 2
scaleX,scaleY=.005,.005
scaleX/=pi/rectSize
scaleY/=pi/rectSize
grayscale=False

pen=Turtle()
pen.hideturtle()
canvas=pen.getscreen()
canvas.tracer(0, 0)
oldPenPool, newPenPool = [], []
width, height = canvas.window_width(),canvas.window_height()

for pool in [oldPenPool, newPenPool]:
    for i in range(ceil(width * height / rectsPerPen)):
        pen = Turtle()
        pen.hideturtle()
        pen.setundobuffer(0)
        pool.append(pen)


def rect(pen, x, y, width, height, color):
    pen.penup()
    pen.goto(x + width, y)
    pen.pendown()
    pen.pencolor(color)
    pen.fillcolor(color)
    if width == 1 and height == 1:
        pen.dot()
        return
    elif width == 1:
        pen.sety(y - height)
        return
    elif height == 1:
        pen.setx(x + width)
        return
    pen.begin_fill()
    for i in range(2):
        pen.right(90)
        pen.forward(width)
        pen.right(90)
        pen.forward(height)
    pen.end_fill()


def toWindowCoords(x, y):
    return x - width / 2, -y + height / 2


time = 0
speed = .1
while True:
    i = -1
    for w in range(0, width, rectSize):
        for h in range(0, height, rectSize):
            i += 1
            x, y = toWindowCoords(w, h)
            shade=equation(w*scaleX, h*scaleY, time)
            rect(newPenPool[int(i / rectsPerPen)], x, y, rectSize, rectSize, hsv_to_rgb(shade, 1, 1) if not grayscale else [shade,shade,shade])
            if i % rectsPerPen == 0:
                oldPenPool[int(i / rectsPerPen) - 1].clear()
                canvas.update()
    time += speed
    tempPenPool = oldPenPool
    oldPenPool = newPenPool
    newPenPool = tempPenPool