Aditya Panchal bastula

How to capture WebGL/Canvas by piping data over a websocket.

This Gist builds on https://gist.github.com/unconed/4370822 from @unconed.

Instead of the original method which writes to the browsers sandboxed filesystem here we use a websocket connection provided by websocketd to pipe image data to a short python script that writes out the .png files to disk.

Install websocketd

Last update: Feb 3, 2015

Flask-SQLAlchemy has some nice built-ins (e.g. accessing query directly on classes). To continue leveraging these nicities while still inside of a Celery worker, we need to make sure we setup/teardown in a similar fashion to Flask-SQLAlchemy does on Flask.

Setup

Flask-SQLAlchemy uses create_scoped_session at startup which avoids any setup on a per-request basis.

https://github.com/mitsuhiko/flask-sqlalchemy/blob/2.0/flask_sqlalchemy/__init__.py#L668

This means Celery can piggyback off of this initialization.

	CREATE TRIGGER person_notify AFTER INSERT OR UPDATE OR DELETE ON income
	FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
	'id',
	'email',
	'username'
	);

	CREATE TRIGGER income_notify AFTER INSERT OR UPDATE OR DELETE ON income
	FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
	'id',

	"""
	Testing python multiprocessing speed. Based on
	http://blogs.warwick.ac.uk/dwatkins/entry/benchmarking_parallel_python_1_2/
	"""

	import time
	import math
	import multiprocessing as mp

	def isprime(n):

	import numpy as np

	def outline_to_mask(line, x, y):
	"""Create mask from outline contour

	Parameters
	----------
	line: array-like (N, 2)
	x, y: 1-D grid coordinates (input for meshgrid)

	import sys
	import time
	import logging
	import requests
	from watchdog.observers import Observer
	from watchdog.events import FileSystemEventHandler

	ORTHANC_HOST = "http://localhost:8042"
	ORTHANC_RESET_URL = ORTHANC_HOST + "/tools/reset"
	# Set user/pass if basic authentication is enabled

	# vim: set fileencoding=utf-8 :
	#
	# How to store and retrieve gzip-compressed objects in AWS S3
	###########################################################################
	#
	# Copyright 2015 Vince Veselosky and contributors
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at

	__author__ = 'tom'

	import sys
	from PyQt5.QtWidgets import QWidget, QDesktopWidget, QApplication


	class Example(QWidget):
	def __init__(self):
	super().__init__()
	self.init_ui()

	#!/usr/bin/env bash

	ENV_PATH="$(dirname "$(dirname "$(which pip)")")"
	SYSTEM_VIRTUALENV="$(which -a virtualenv\|tail -1)"

	BAD_ENV_PATHS="/usr/local"

	echo "Ensure the root of the broken virtualenv:"
	echo " $ENV_PATH"

	<meta charset="UTF-8">
	<script src="https://npmcdn.com/[email protected]/mithril.js"></script>
	<script src="https://npmcdn.com/[email protected]/dist/MSXTransformer.js"></script>
	<div id="app"></div>
	<script type="text/msx;harmony=true">void function() { 'use strict';

	var App = {
	view(ctrl, attrs) {
	return <h1>Hello {attrs.who}!</h1>
	}