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justvanrossum / animated_color_grid.py
Created April 5, 2020 18:23
Animated Color Grid with DrawBot
canvasSize = 500
numSquares = 25
squareSize = canvasSize / numSquares
numFrames = 50
for frame in range(numFrames):
t = frame / numFrames
newPage(canvasSize, canvasSize)
frameDuration(1/25)
@justvanrossum
justvanrossum / Kapitzki.py
Last active August 29, 2021 12:18
Animated tribute to a work by Herbert W. Kapitzki (DrawBot script)
# Based on a work by Herbert W. Kapitzki
# https://twitter.com/Lett_Arc/status/1369712193063780352
# from fontTools.misc.vector import Vector
from fontTools.misc.arrayTools import Vector
def pairs(iterable):
it = iter(iterable)
first = next(it)
@justvanrossum
justvanrossum / screen_info.py
Created June 6, 2019 06:30
macOS/Python: Get dimension info about active screens
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
justvanrossum / filename_proposal.py
Last active January 30, 2021 14:08
Test implementation for new proposed reversible glyph name to file name scheme
# test implementation for https://github.com/unified-font-object/ufo-spec/issues/164
from urllib.parse import unquote
import string
separatorChar = "^"
# TODO: [insert references]
@justvanrossum
justvanrossum / CircleOfSquares.py
Created December 3, 2020 18:18
# boring version of https://twitter.com/beesandbombs/status/1334541858366775298
# <3 beesandbombs!
canvasSize = 800
numFrames = 50
numSquares = 50
radius = 0.3 * canvasSize
squareSize = 0.2 * canvasSize
for frame in range(numFrames):
@justvanrossum
justvanrossum / cubic_evaluator.py
Created December 3, 2020 14:29
Example of using a nested function to create a cubic Bézier evaluator
from fontTools.misc.bezierTools import calcCubicParameters
def cubic(*cubic_points):
(ax, ay), (bx, by), (cx, cy), (dx, dy) = calcCubicParameters(*cubic_points)
def evaluate(t):
ttt = t * t * t
tt = t * t
x = ax * ttt + bx * tt + cx * t + dx
y = ay * ttt + by * tt + cy * t + dy
return x, y
@justvanrossum
justvanrossum / Ellipses.py
Last active October 4, 2020 23:36
DrawBot: create a simple loop of nested ellipses
# 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
justvanrossum / SphericalSpiral.py
Created February 4, 2016 07:08
DrawBot: An Archimedean Spherical Spiral animation.
# This borrows heavily from:
# http://jsfiddle.net/Rebug/5uLr7s6o/
#
# Resulting gif:
# http://dailydrawbot.tumblr.com/post/134989689114/an-archimedean-spherical-spiral
import math
import colorsys
def circle(pt, radius):
@justvanrossum
justvanrossum / generateOTTagsModule.py
Last active August 20, 2020 08:50
Scrape OT tag definitions and descriptions from OT spec site (script, language and feature tags)
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
justvanrossum / LissajousGrid.py
Last active April 29, 2020 16:51
DrawBot: create a grid of Lissajous curve variations.
# 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)