justvanrossum

# http://dailydrawbot.tumblr.com/post/143801148619/square-vs-lozenge

def rotatedSquare(x, y, squareSize, angle):
    offsetSin = squareSize * sin(radians(angle))
    save()
    translate(x + offsetSin, 0)
    rotate(angle)
    rect(0, 0, squareSize, squareSize)
    restore()

justvanrossum

# Result:
# http://dailydrawbot.tumblr.com/post/150807743869/growing-circles

def circle(pt, radius):
    diameter = 2 * radius
    x, y = pt
    oval(x - radius, y - radius, diameter, diameter)

nFrames = 50
canvasSize = 500

justvanrossum

# http://dailydrawbot.tumblr.com/post/160078796339/lissajous-grid
# remade from https://twitter.com/fermatslibrary/status/857580490425020416

def lissajous(a, b, phase, radius):
    numSteps = 340
    points = []
    for i in range(numSteps):
        angle = 2 * pi * i / numSteps
        x = radius * sin(a * angle + phase)
        y = -radius * sin(b * angle)

justvanrossum

# Slightly modified from
#   https://twitter.com/petrvanblokland/status/860610270410018817
# by Petr van Blokland @petrvanblokland

def drawSierpinskiSquare(px, py, w, maxW, maxH):
    if w < 1:
        return
    for x in range(3):
        for y in range(3):
            if x == 1 and y == 1:

justvanrossum

# Result:
# http://dailydrawbot.tumblr.com/post/160364438359/ellipses

def drawEllipses(cx, cy, rx, ry, dx, dy, n, bw=0):
    for i in range(n):
        fill(bw)
        oval(cx - rx, cy - ry, 2 * rx, 2 * ry)
        rx -= dx
        ry -= dy
        bw = 1 - bw

justvanrossum

# http://dailydrawbot.tumblr.com/post/163234641179/nested-boxes

def easeInOutQuad(t):
    t *= 2
    if t < 1:
        return 0.5 * (t ** 2)
    else:
        t = 2 - t
        return 1 - 0.5 * (t ** 2)

justvanrossum

from AppKit import NSScreen, NSDeviceSize, NSDeviceResolution
from Quartz import CGDisplayScreenSize

for i, screen in enumerate(NSScreen.screens(), 1):
    description = screen.deviceDescription()
    pw, ph = description[NSDeviceSize].sizeValue()
    rx, ry = description[NSDeviceResolution].sizeValue()
    mmw, mmh = CGDisplayScreenSize(description["NSScreenNumber"])
    scaleFactor = screen.backingScaleFactor()
    pw *= scaleFactor

justvanrossum

# Original:
# Paul Brown, 'Untitled Computer Assisted Drawing' (1975)
# The program was written in Fortran and drawn with Calcomp's drum pen plotter.
# https://twitter.com/satoshi_aizawa/status/1218786881631965186

def drawArc(center, radius, startAngle, endAngle):
    bez = BezierPath()
    bez.arc(center, radius, startAngle, endAngle, False)
    drawPath(bez)

justvanrossum

import os
import re


def parse(data):
    start = data.find("<tbody>")
    end = data.find("</tbody>")
    data = data[start+7:end]
    for chunk in re.findall(r"<tr>.+?</tr>", data, re.DOTALL):
        fields = re.findall(r"<td>(.+?)</td>", chunk, re.DOTALL)

justvanrossum

canvasSize = 500
numSquares = 25
squareSize = canvasSize / numSquares

numFrames = 50

for frame in range(numFrames):
    t = frame / numFrames
    newPage(canvasSize, canvasSize)
    frameDuration(1/25)