justvanrossum’s gists

justvanrossum / circlewavegrid.py

Last active June 21, 2016 21:22

Create a wavy animaton with DrawBot

	# Physics stolen from:
	# http://giphy.com/gifs/wave-circle-point-13ePqdDflwat9e

	def blobPos(pt, r, a):
	x, y = pt
	x += cos(a) * r
	y += sin(a) * r
	return (x, y)

	def drawGrid(cells):

justvanrossum / TheBlob.py

Last active June 28, 2019 05:50

Generate a blobby animated gif with DrawBot.

	# FREQUENCY = 1
	# http://dailydrawbot.tumblr.com/post/135252661206/the-blob

	# FREQUENCY = 2
	# http://dailydrawbot.tumblr.com/post/135266061309/the-blob-2

	def centerOval(pt, radiusX, radiusY):
	x, y = pt
	oval(x - radiusX, y - radiusY, 2 * radiusX, 2 * radiusY)

justvanrossum / StackOfSquares.py

Last active October 25, 2021 02:30

Create a simple animation with Python in DrawBot

	# This script is part of a tutorial screencast: https://vimeo.com/149247423

	CANVAS = 500
	SQUARESIZE = 158
	NSQUARES = 50
	SQUAREDIST = 6

	width = NSQUARES * SQUAREDIST

	NFRAMES = 50

justvanrossum / MarcelDuchampRotoRelief.py

Last active February 14, 2018 00:09

DrawBot: Emulate some of Marcel Duchamp's Rotoreliefs.

	# An interpretation of Marcel Duchamp's Rotoreliefs, as seen in his 1926 movie Anemic Cinema:
	# https://www.youtube.com/watch?v=dXINTf8kXCc

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

	canvasSize = 500
	nFrames = 64 # 64

justvanrossum / EllsworthKellySeine.py

Last active January 5, 2016 11:12

DrawBot: A moving tribute to Ellsworth Kelly's "Seine" (1951).

	# A moving tribute to Ellsworth Kelly's "Seine" (1951).

	from random import seed # seed() allows us to get repeatable pseudo-noise

	def expandGrid(pixels):
	assert len(pixels) % 2
	mid = len(pixels) // 2
	midColumn = pixels[mid]
	pixels.insert(mid + 1, list(midColumn))
	pixels.insert(mid + 0, list(midColumn))

justvanrossum / Jellyfish.py

Last active March 10, 2020 17:11

DrawBot: Generate a jellyfish-like pulsating blobby animation.

	# Generate a jellyfish-like pulsating blobby animation.

	from random import seed


	def varyPoint(pt, radius, phase):
	x, y = pt
	dx = radius * cos(phase)
	dy = radius * sin(phase)
	return x + dx, y + dy

justvanrossum / VasarelyCircles.py

Last active September 24, 2021 09:39

DrawBot: Generate a moving interpretation of works by Victor Vasarely.

	# http://dailydrawbot.tumblr.com/post/136811506080/circles-after-victor-vasarely-source-code
	#
	# Based on works by Victor Vasarely
	# https://s-media-cache-ak0.pinimg.com/originals/a6/df/1f/a6df1fc5d2dd07d79a44c3aea5172b59.jpg
	# https://s-media-cache-ak0.pinimg.com/736x/1e/38/82/1e38820f1304c8750de216a31a5f5abe.jpg
	# http://interiorator.com/wp-content/uploads/2013/07/Vasarely-01.jpg

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

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 / PsychoDonut.py

Last active February 10, 2016 12:32

DrawBot: Create an animated flower-like pattern by drawing circles on a donut.

	# nCirclesH = 18; nCirclesV = 6:
	# http://dailydrawbot.tumblr.com/post/138985675364/psychodonut-2
	# nCirclesH = 38; nCirclesV = 28:
	# http://dailydrawbot.tumblr.com/post/139047595845/psychodonut-3

	def project(x, y, innerR, outerR, phase):
	# convert from "donut space" to normal space
	angle = 2 * pi * x
	f = (cos(phase + pi * y) + 1) / 2
	R = innerR + f * (outerR - innerR)

justvanrossum / OscilloscopeLissajous.py

Last active March 24, 2016 06:42

DrawBot: Generate an animation simulating an oscilloscope showing a Lissajous curve.

	# http://dailydrawbot.tumblr.com/post/141565208389/oscilloscope-lissajous

	canvasSize = 500
	nFrames = 20
	nSteps = 20
	radius = 195
	nEchoes = 20
	nScopeLines = 10
	xFrequency = 3
	yFrequency = 4

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