Make Your Own Free Tools with Processing, Pure Data Support slides from a talk to CrashSpace, Los Angeles, the debut workshop on using this Pure Data library for Processing

1. Image and Music
Make Your Own Free Tools
with Processing, Pure Data
flavors.me/peterkiRn
Sunday, September 11, 2011

2. A Tool That Does Nothing
• Expressing ideas in words, pictures
• Working with numbers (read: music,
visuals)
Sunday, September 11, 2011

3. Processing (P5)
• Code with words
• Written in Java (for our purposes)
• Originated by Ben Fry, Casey Reas
• Free and open source (LGPL)
• Mac, Windows, Linux, Android
Sunday, September 11, 2011

4. Pure Data (Pd)
• Code with object boxes, patch cords
(“dataflow”)
• Written in C
• Originated by Miller Puckette
• Free and open source (BSD)
• Mac, Windows, Linux GUI
Sunday, September 11, 2011

5. libpd
• DSP library, independent from either GUI
or sound/hardware
• libpd is Pure Data (and someday, there may
be only one download)
• Originated by Peter Brinkmann
• Free and open source (BSD)
• Mac, Windows, Linux, Android, iOS, Java,
Python, OpenFrameworks, Processing
Sunday, September 11, 2011

6. Prerequisites
• Processing
• Pure Data (for authoring)
• JACK (for audio, on desktop)
• Optional: Git (for getting code)
• Optional: Ant (for building code)
• Optional: Eclipse (useful with Android)
Sunday, September 11, 2011

7. Prerequisites
Processing
http://processing.org/download
Try running once.
Sketchbook: [user]/Documents/Processing
Sunday, September 11, 2011

8. Prerequisites
Pure Data
http://puredata.info
“Vanilla”?
“Extended”?
Sunday, September 11, 2011

9. Prerequisites
JACK
jackaudio.org
jackosx.com
(hint: it’s awesome)
Sunday, September 11, 2011

10. Installation (Binary)
cdm.fm/pdp5
(*temporary download address)
[user] > Documents > Processing > libraries
or [user] > sketchbook > libraries
Restart Processing
Sunday, September 11, 2011

11. Prerequisites
Git
git-scm.com
Sunday, September 11, 2011

12. Get the library
Get the code:
http://gitorious.org/pdlib
Pick a directory; open the Terminal
git clone git://gitorious.org/pdlib/puredatap5.git
*soon moving to GitHub
Sunday, September 11, 2011

13. Build it!
1. cd puredatap5/resources
2. ant
3. There is no step 3.
Sunday, September 11, 2011

14. Try it
1. Start JackPilot
2. Open xypad
3. Laugh heartily ... or see what went wrong.
Sunday, September 11, 2011

15. Now, let’s back up
• A look at Processing
• A look at Pd
• rjlib -- http://github.com/rjdj/rjlib
• How the UI works
• How the sound works
Sunday, September 11, 2011

16. Look Who’s Talking, Two
• openPatch
• start, stop (JACK)
• sendBang, sendFloat, sendSymbol, sendList,
sendMessage
• receiveBang, receiveFloat, receiveSymbol,
receiveList, receiveMessage
• subscribe(sym) / unsubscribe(sym)
• (advanced) readArray, writeArray
Sunday, September 11, 2011

17. Anatomy of Patch
• Processing UI -- motion, ellipse, responding
to mouse events
• Audio -- basic oscillation, adding “modules”
from rjlib
Sunday, September 11, 2011

18. Learning More
• pd-tutorial.com (Johannes Kriedler)
• floss manual (many people)
• Learning Processing (Shiffman, Morgan Kauffman) -
comprehensive, OOP
• Nature of Code (Shiffman, self-pub) - upcoming/class site
• Getting Started with Processing (Reas/Fry, O’Reilly) -
more basic
Sunday, September 11, 2011

19. Image and Music
Make Your Own Free Tools
with Processing, Pure Data
flavors.me/peterkiRn
Sunday, September 11, 2011