PM2Ring’s gists

PM2Ring / TriBounce.svg

Last active February 19, 2022 09:09

Bouncing around a triangular billiards table. SVG output.

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PM2Ring / HorizonsBatch.py

Created January 21, 2022 03:45

Run Horizons batch file in Sage

	""" Retrieve data from Horizons using a batch-file
	Written by PM 2Ring 2021.12.27
	"""
	import re, requests
	url = "https://ssd.jpl.nasa.gov/api/horizons_file.api"
	pat = re.compile(r"(?:[^'\s]\|'[^']*')+")

	@interact
	def go(batch=InputBox(width=40, height=24)):
	if not batch: return

PM2Ring / MultiplicationDrill.html

Last active January 18, 2022 17:19

Simple multiplication drill app, in JavaScript

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>Multiplication Drill</title>
	</head>
	<body>
	<h3>Multiplication Drill</h3>
	<input id="aLo" type="number" value="2"><label for="aLo">Low A</label><br>

PM2Ring / leap-seconds.py

Last active June 25, 2024 13:51

Parsing the leap-seconds.list file

	# Fetch & parse leap-seconds.list

	from datetime import datetime, timezone, timedelta
	from hashlib import sha1
	import requests

	# Leap second data source
	# url = 'https://www.ietf.org/timezones/data/leap-seconds.list'
	url = 'https://raw.githubusercontent.com/eggert/tz/main/leap-seconds.list'

PM2Ring / ApollonianTriangle.svg

Last active September 18, 2024 12:45

Miscellaneous SVGs

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PM2Ring / SVGBezierToy.html

Created July 26, 2021 11:50

Basic Bezier curve, interactive

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>SVG Bézier</title>
	<style id="mystyle">
	circle {
	stroke: #222;
	stroke-width: 0.5;
	stroke-opacity: 0.25;

PM2Ring / SunSSB.svg

Created July 18, 2021 13:56

Sun-SSB radial distance, 1945-1995

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PM2Ring / Crate3D.html

Created June 18, 2021 11:51

Stereo pair (wide eye) demo using three.js

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
	</head>
	<body>
	<canvas id="can3js" width="640" height="320"></canvas><br>
	<button id="stopstart">Start</button><br>
	</body>

PM2Ring / merger_splitter1.svg

Created February 4, 2021 08:17

Merger-splitter diagram

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PM2Ring / MathJaxTable.py

Created January 31, 2021 02:21

Simple MathJax table maker, using SageMathCell

	class Table:
	def __init__(self, align, data):
	self.buff = []
	self.make(align, data)

	def get(self):
	s = "\n".join(self.buff)
	return s + "\n\\end{array}"

	def put(self, s):

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