Processing Forum

Processing and Microsoft's PixelSense (old Surface)

[4 Replies]
- 31-Jul-2013 03:09 AM
- Forum: Integration and Hardware
Anyone knows of any project to feed Processing with touch or marker events from the Microsoft's PixelSense (old Surface)?

Keystone library and the dreaded ks.load()

[4 Replies]

27-Nov-2012 04:58 PM
Forum: Contributed Library Questions

I'm running Processing 2.0b6 on a Mac, and I'm running the really helpful Keystone library (by David Bouchard). Problem is, the ks.load() insists on causing me a NullPointerException .

I've tried using a solution described in the old version of this forum:

You can try and do:
Locale locale = new Locale("EN");
Locale.setDefault(locale);
before doing the save.

But to no avail. The file generated seems fine:

<?xml version="1.0" encoding="UTF-8"?>
<keystone>
<surface h="300" res="20" w="400" x="169.0" y="168.0">
<point i="0" u="0.0" v="0.0" x="-76.0" y="-124.0"/>
<point i="20" u="400.0" v="0.0" x="491.0" y="-121.0"/>
<point i="420" u="0.0" v="300.0" x="-168.0" y="572.0"/>
<point i="440" u="400.0" v="300.0" x="572.0" y="573.0"/>
</surface>
</keystone>

But I get this error when trying to load these settings (with ks.load() in setup() and the file in the data folder of the sketch):

java.lang.NullPointerException at processing.mode.java.runner.Runner.findException(Runner.java:682) at processing.mode.java.runner.Runner.reportException(Runner.java:627) at processing.mode.java.runner.Runner.exception(Runner.java:570) at processing.mode.java.runner.EventThread.exceptionEvent(EventThread.java:367) at processing.mode.java.runner.EventThread.handleEvent(EventThread.java:255) at processing.mode.java.runner.EventThread.run(EventThread.java:89) Exception in thread "Animation Thread" java.lang.NullPointerException at processing.data.XML.getString(XML.java:575) at processing.data.XML.getString(XML.java:570) at processing.data.XML.getFloat(XML.java:639) at processing.data.XML.getFloat(XML.java:627) at deadpixel.keystone.CornerPinSurface.load(Unknown Source) at deadpixel.keystone.Keystone.load(Unknown Source) at deadpixel.keystone.Keystone.load(Unknown Source) at CornerPin.keyPressed(CornerPin.java:102) at processing.core.PApplet.handleKeyEvent(PApplet.java:2756) at processing.core.PApplet.dequeueKeyEvents(PApplet.java:2699) at processing.core.PApplet.handleDraw(PApplet.java:2140) at processing.opengl.PGL$PGLListener.display(PGL.java:2595) at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:189) at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:177) at javax.media.opengl.awt.GLCanvas$DisplayAction.run(GLCanvas.java:928) at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:425) at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:364) at javax.media.opengl.awt.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:945) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:702) at java.awt.EventQueue.access$400(EventQueue.java:82) at java.awt.EventQueue$2.run(EventQueue.java:663) at java.awt.EventQueue$2.run(EventQueue.java:661) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:672) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Tips on using Processing to detect musical notes

[0 Replies]
- 29-Oct-2012 04:10 AM
- Forum: General Discussion
Hello,

I'm embarking on a small project where I want to have an informal musical collaboration between a musician (guitarist), and someone at the helm of a interactive tabletop.

I was wondering if anyone has tips on how to detect musical notes? I've found these two projects using Minim:

http://forum.processing.org/topic/minim-electric-guitar-tuner

http://www.openprocessing.org/sketch/55597

But they don't seem to accomplish what I need (the second code just plays back the notes).

I was thinking of using something similar to the first link to detect the sound being played, but I wonder how I can isolate and compare the sound to a library of notes. Any tips or advices would be helpful.

How to force a real full screen in an Android app?

[10 Replies]
- 05-Jun-2012 12:08 PM
- Forum: Android Processing
I'm loving coding for the Android with Processing, but I'm wondering if it's possible to force a real full screen (no status bar on the bottom, with the home button, etc.)

Can you let me know?

Where do the files I create with createWriter() end up?!

[4 Replies]
- 12-May-2012 08:47 AM
- Forum: Android Processing
Can't find an answer for this anywhere. If I use createWriter() with just a file name (no path), e.g. file.csv, where does it end up in? I've been trying to locate such files using File Expert on the Android, with no success.

ControlP5: Any way of displaying Checkboxes and Radiobuttons in a Control Window

[3 Replies]
- 25-Apr-2011 05:34 PM
- Forum: Contributed Library Questions
Hello,

I've created a control window and canvas with ControlP5, and I was wondering if I can add checkboxes and radiobuttons to it.

I've tried (with no success):
1. radiobutton.setWindow(controlWindow);
3. checkbox.setWindow(controlWindow);
controlWindow, radiobutton, and checkbox are correctly defined.

SQLibrary: How to use (e.g.) db.getInt("some_field") if your query returns two tables with the same field?

[4 Replies]
- 23-Apr-2011 08:09 AM
- Forum: Contributed Library Questions
Hello,

I'm trying to read values from a field called event_id. Problem is, my query returns values from two tables. I've tried:
1. db.getInt("table_one.some_field")
But it doesn't work ( no column by the name of table_one.some_field). Any tips?

Using proXML to write on XML file (e.g. <posx>5.0</posx)

[1 Reply]
- 19-Apr-2011 11:45 AM
- Forum: Contributed Library Questions
Hello,

I'm using proXML to read and write an XML file, e.g.:
1. <things>
2. <thing>
3. <posx>5.0</posx>
4. <posy>10.0</posy>
5. </thing>
6. </things>
During the execution of my code, I want to update both posx and posy, but how do I do it (without using attributes)?

I've tried doing it like:
1. proxml.XMLElement x = new proxml.XMLElement("posx");
2. proxml.XMLElement y = new proxml.XMLElement("posy");
4. things.removeChild(0);
6. thing.removeChild(1);
7. thing.removeChild(0);
9. thing.addChild(x, 0);
10. thing.addChild(y, 1);
12. things.addChild(thing, 0);
But how do I add the values to posx and posy? I read them using getChild(0), but addChild can only be used with an element, and not with floats or strings.

Importing a .lib file

[3 Replies]
- 29-Mar-2011 09:38 AM
- Forum: Programming Questions
Hello,

I'm trying to import the .lib file mentioned on this website: http://quasipartikel.at/2010/01/07/quadratic-bezier-curves-for-processingjs/

I'm struggling with this because I can't find information on how to do it. Can someone be kind enough to explain it?

Thank you

Problem with Processing and SQLJet

[1 Reply]
- 08-Dec-2010 02:57 PM
- Forum: Contributed Library Questions
I want to create a Processing library to record events on a multi-touch interface. I'm trying to achieve this by using SQLJet to easily record events on an SQLite database. I know about the SQLibrary for Processing, but I'm trying to avoid having write instructions on the Sketches' code.

I'm using the Processing library template for Eclipse, and I've imported the OSGi bundle with SQLJet as an external JAR. I'm testing this simple code that only creates a database:
1. package TUIrecorder;
3. import java.io.File;
5. import org.tmatesoft.sqljet.core.SqlJetException;
6. import org.tmatesoft.sqljet.core.SqlJetTransactionMode;
7. import org.tmatesoft.sqljet.core.table.ISqlJetTransaction;
8. import org.tmatesoft.sqljet.core.table.SqlJetDb;
10. import processing.core.*;
12. public class TUIrecorder {
13. // myParent is a reference to the parent sketch
14. PApplet myParent;
15. File dbFile;
17. /**
18. * Constructor, called in the setup() method in the Processing sketch to start the library.
19. *
20. * @example TUIrecExample
21. * @param theParent
22. */
23. public TUIrecorder(PApplet theParent) {
24. myParent = theParent;
26. try {
27. createDB();
28. } catch (Exception e) {
29. System.out.println("Failed to create the database.");
30. }
31. }
32. /**
33. * Prepares a table in the database to record pick ups and drop downs
34. *
35. * @example TUIrecExample
36. * @throws SqlJetException
37. */
38. private void createDB() throws SqlJetException {
39. dbFile = new File("db.interaction");
40. dbFile.delete();
41. // create database, table and two indices
42. SqlJetDb db = SqlJetDb.open(dbFile, true);
43. // set DB option that have to be set before running any transactions
44. db.getOptions().setAutovacuum(true);
45. // set DB option that have to be set in a transaction
46. db.runTransaction(new ISqlJetTransaction() {
47. public Object run(SqlJetDb db) throws SqlJetException {
48. db.getOptions().setUserVersion(1);
49. return true;
50. }
51. }, SqlJetTransactionMode.WRITE);
53. // close DB
54. db.close();
55. }
56. }
It builds successfully, although I have a warning relating to the javadoc of SqlJetException.

When I try to run the following code in Processing:
1. import TUIrecorder.*;
3. TUIrecorder tuiRec;
5. void setup() {
6. size(400,400);
7. smooth();
9. tuiRec = new TUIrecorder(this);
10. }
12. void draw() {
13. background(0);
14. }
I get the following error:

processing.app.debug.RunnerException: NoClassDefFoundError: org/antlr/runtime/RecognitionException

at processing.app.Sketch.placeException(Sketch.java:1543)

at processing.app.debug.Runner.findException(Runner.java:583)

at processing.app.debug.Runner.reportException(Runner.java:558)

at processing.app.debug.Runner.exception(Runner.java:498)

at processing.app.debug.EventThread.exceptionEvent(EventThread.java:367)

at processing.app.debug.EventThread.handleEvent(EventThread.java:255)

at processing.app.debug.EventThread.run(EventThread.java:89)

Exception in thread "Animation Thread" java.lang.NoClassDefFoundError: org/antlr/runtime/RecognitionException

at org.tmatesoft.sqljet.core.table.SqlJetDb$2.runWithLock(SqlJetDb.java:247)

at org.tmatesoft.sqljet.core.table.SqlJetDb.runWithLock(SqlJetDb.java:305)

at org.tmatesoft.sqljet.core.table.SqlJetDb.readSchema(SqlJetDb.java:242)

at org.tmatesoft.sqljet.core.table.SqlJetDb.getOptions(SqlJetDb.java:509)

at TUIrecorder.TUIrecorder.createDB(Unknown Source)

at TUIrecorder.TUIrecorder. (Unknown Source)

at TUIrecExample.setup(TUIrecExample.java:30)

at processing.core.PApplet.handleDraw(PApplet.java:1583)

at processing.core.PApplet.run(PApplet.java:1503) at java.lang.Thread.run(Thread.java:680)

Caused by: java.lang.ClassNotFoundException: org.antlr.runtime.RecognitionException

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:307)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

... 10 more

Any clue on what I'm doing wrong here?

Porting a library made on Windows (32bit) to Mac (64bit)

[8 Replies]
- 12-Oct-2010 09:30 AM
- Forum: Library and Tool Development
Hello,

Some time ago I developed a Processing library to ease the work with touchatag RFID readers ( http://forum.processing.org/#Topic/25080000000014013). Since this library only work in Windows, I've now decided to port it to Mac.

Problem is, I'm pretty new to MacOS. The library I developed used libnfc. I basically compiled libnfc and added the resulting .dll and .lib to my Visual Studio project. I'm wondering what do I need to add to Xcode (is Xcode the best way to go, or should I use Eclipse or Netbeans?), since we don't have .dlls on the Mac.

New library: touchatag RFID readers on Processing

[37 Replies]
- 19-Jun-2010 03:31 AM
- Forum: Library and Tool Development
Following the post in the "old" forum, I developed a library for Processing that allows users to connect and read from cheap touchatag RFID readers on the Windows platform.

This library affords the simultaneously connection of multiple readers, and up to three tags on each one (due to performance issues of the tags themselves on the touchatag reader). This project was tested on Windows 7 Professional and Windows XP SP3, with Processing 1.0.9.

You can download it here. For this library to work, users only need to install the Windows CCID PCSC driver, the touchatag software client isn't necessary. For more information head to the library's page on Google code.

Example:

import touchatag.*;

Touchatag rfid;

// Defines the maximum number of touchatag

// readers that might be connected to the computer

int numOfReaders = 3;

// This library affords up to three touchatag

// tags on each of the touchatag readers

String[][] tags = new String[numOfReaders][3];

void setup() {

  // Optionally, if only one touchatag reader will

  // be used: rfid = new Touchatag(this)

  rfid = new Touchatag(this, numOfReaders);

}

void draw() {

  // Gets the number of touchatag readers connected

  int readers = rfid.On();



  if (readers != 0) {

   // Gets the tags for each of the touchatag readers

   for (int i = 0; i < readers; i++) {

tags[i] = rfid.tagsOnReader(i);

println(tags[i]);

   }

   }

}

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