mattfelsen

/*

Wall Drawing #271: Black circles, red grid, yellow arcs from four
corners, blue arcs from the midpoints of four sides
(ACG 195) 1975
Originally colored pencil on wall
Solomon R. Guggenheim Museum
New York

Recreated by Matt Felsen in Processing, 2014

mattfelsen

Ubuntu web-related setup

# Install mysql extension for php
sudo apt-get install php5-mysql

# Enable mod_rewrite in Apache
sudo a2enmod rewrite

# Allow .htaccess to do mod_rewrite rules
# in /etc/apache2/httpd.conf or /etc/apache2/apache.conf or /etc/apache2/sites-enabled/000-default

mattfelsen

# Taken from these two posts
# Note, I did not enable php support in nginx to keep things simple
# http://www.raspberrypi.org/forums/viewtopic.php?p=515259
# http://www.raspberrypi.org/forums/viewtopic.php?f=43&t=63276&p=502944&hilit=rpi+cam+web+interface+nginx#p502944

sudo apt-get install nginx

# edit nginx config
sudo nano /etc/nginx/nginx.conf
# disable gzip and logging for performance

mattfelsen

SD card-related

Clone an SD card for backup

Use diskutil list to figure out which disk number the SD card is mounted as. Then:

sudo dd if=/dev/rdisk2 bs=1m | gzip > image.img.gz

Flash an image onto an SD card

mattfelsen

var WebSocket = require('ws');
var WebSocketServer = require('ws').Server;

var client = new WebSocket('ws://localhost:7204/myo/1');
var wss = new WebSocketServer({ port: 9000 });

wss.broadcast = function(data) {
    for (var i in this.clients) this.clients[i].send(data, function(){});
};

mattfelsen

#!/bin/bash

#
# NOTE: The openFrameworks folder structure (particularly with regard to the projectGenerator)
# has changed since this script was written, so this will probably not work!
# (The parts about creating a new project toward the end, at least.)
#

#
# usage:

mattfelsen

float theta, x, y, z;

theta = ofDegToRad(230); // 0 -> 360
x = cylRadius * cos(theta);
y = cylHeight * -0.4; // -h/2 -> h/2
z = cylRadius * sin(theta);
ofVec3f center = cam.worldToScreen( ofVec3f(x, y, z) );

cam.end();

mattfelsen

Commits

Undo last commit

git reset --soft HEAD~1

Add stuff to last commit

git add file.cpp
git commit --amend

mattfelsen

So you got a new computer, eh?

Point & click stuff

Xcode

• Monokai theme
• OF Addon Plugin
• Prefs
  • Text editing -> indentation -> prefer tabs
  • Text editing -> show line numbers, trim whitespace from empty lines

mattfelsen

Number of connected displays

system_profiler SPDisplaysDataType | grep Resolution | wc -l | sed 's/ //g'

Whether the system is sleeping or not

1 is alseep, 4 is not sleeping

ioreg -n IODisplayWrangler | grep -i IOPowerManagement | perl -pe 's/^.*DevicePowerState\"=([0-9]+).*$/\1/'

Set or check scheduled sleep/shutdown/wake settings