dlublin

Encoding to Hap from the command line using FFmpeg

For users who prefer working with a command line or need to access advanced encoding settings for Hap the popular FFmpeg library can be used to work with Hap movies.

1. If this is your first time using FFmpeg you may need to install it on your system, or compile it from source. In either case be sure that Snappy is enabled as part of the binary. If you already have FFmpeg on your system with Snappy enabled, you can skip this step.

   You can check that your version of FFmpeg can encode Hap using

   ffmpeg -encoders | grep hap
   

HalfdanJ

// Kudos to armadilly

fbo.begin();
    ///pre-multiply background color of the fbo for correct blending!
    ofClear(ofColor(fboBgColor * (fboBgColor.a / 255.) , fboBgColor.a));
    //Set this blending mode for anything you draw INSIDE the fbo
    glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
    //your draw code here!
fbo.end();

mattfelsen

Commits

Undo last commit

git reset --soft HEAD~1

Add stuff to last commit

git add file.cpp
git commit --amend

jkosoy

Git Flow

I keep meeting people who struggle to wrap their heads around the proper way to use Git + Github. This snippet is designed to explain Vincent Driessen's git branching model, at least as well as I understand it. Speacial thanks to Stephen Koch for being the true master here.

This tutorial is for Linux or OSX. Feel free to use Cygwin or write a fork for windows.

A way to think about Git and Github.

jkosoy

Raspberry Pi setup

Just wanted a quick start guide for myself so that I wouldn't have to keep rooting through Google to remember all this stuff. Hopefully it helps other people.

If you had other ideas or suggestions please leave a comment.

Useful things to own before you buy a Pi

The first time I bought a Pi I was enormously frustrated with myself because I didn't own all of this stuff. Kept having to order things off of Amazon and wait to get started... very irritating. This is all good stuff to have laying around anyway:

umutakturk

<?php
$mongodb    = new Mongo("mongodb://username:password@localhost/database_name");
$database   = $mongodb->database_name;
$collection = $database->collection;

$page  = isset($_GET['page']) ? (int) $_GET['page'] : 1;
$limit = 12;
$skip  = ($page - 1) * $limit;
$next  = ($page + 1);
$prev  = ($page - 1);

jkosoy

function map(val, a1, a2, b1, b2) { return ((val - a1) * (b2 -b1)/(a2 - a1)) + b1; }

lrvick

// convert 0..255 R,G,B values to binary string
RGBToBin = function(r,g,b){
    var bin = r << 16 | g << 8 | b;
    return (function(h){
        return new Array(25-h.length).join("0")+h
    })(bin.toString(2))
}

// convert 0..255 R,G,B values to a hexidecimal color string
RGBToHex = function(r,g,b){

paulirish

// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

// MIT license

(function() {
    var lastTime = 0;
    var vendors = ['ms', 'moz', 'webkit', 'o'];

springmeyer

// See https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames for more details.

var degrees2meters = function(lon,lat) {
        var x = lon * 20037508.34 / 180;
        var y = Math.log(Math.tan((90 + lat) * Math.PI / 360)) / (Math.PI / 180);
        y = y * 20037508.34 / 180;
        return [x, y]
}

x= -77.035974