How to make a sketch "portable" with ARToolKit and patterns

kesson

How to make a sketch "portable" with ARToolKit and patterns

in Contributed Library Questions • 1 year ago

Hi guys, I am new to this forum and I am learning Processing since some months and it's amazing…

I have a question, i want to build a sketch for an Augmented Reality application and I want to make this sketch portable so I can execute it on other machines… to do this, i have to include the .patt files folder within the data folder of the sketch...

I tried even to use dataPath() with .patt folder declared within parenthesis (but I Think that I don't understand how it works), even to declare path folder like ./data/patternMaker/examples/ARToolKit_Patterns
Where am I wrong?

PS: I am learning Augmented Reality with ARToolKit with the help of this tutorial on Creative Application (hope it will not be spam, only to say where i am taking the sketch)

http://www.creativeapplications.net/processing/augmented-reality-with-processing-tutorial-processing/
The sketch in question is the second...

PPS: Sorry for my bad english, and thanks to everyone will help me :)

Replies(6)

amnon.owed

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

Have you tried setting the patternPath in setup (before you use it) with

patternPath = sketchPath+"\\data\\";

or

patternPath = dataPath("");

?

kesson

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

Yes, i tried both but with no result...

The error NullPointerException is still there... when I use full path, it works...

I am using Processing 2.0b3

amnon.owed

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

What does the console show when you run this line:

println(loadPatternFilenames(dataPath("")));

kesson

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

It give me an error that says "It looks like you're mixing "active" and "static" modes."

EDIT: i putted the code you writed in void setup() and it didn't give me that error (same in void draw() ), but it doesn't display me anything except of the NullPointer error in the console...

EDIT2: I think this time it worked (i forget to say to println the folder inside data folder)... seems that it "sees" the .patt files, but it doesn't read them...

StartNotification name = default
[0] "4x4_01.patt"
[...]
[99] "4x4_99.patt"
[0] "4x4_01.patt"
[...]
[99] "4x4_99.patt"
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at test1.setup(test1.java:75)
    at processing.core.PApplet.handleDraw(PApplet.java:2103)
    at processing.opengl.PGL$PGLListener.display(PGL.java:2593)
    at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:189)
    at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:177)
    at javax.media.opengl.awt.GLCanvas$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.maybeDoSingleThreadedWorkaround(GLCanvas.java:827)
    at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:415)
    at javax.media.opengl.awt.GLCanvas.paint(GLCanvas.java:515)
    at sun.awt.RepaintArea.paintComponent(RepaintArea.java:276)
    at sun.awt.RepaintArea.paint(RepaintArea.java:241)
    at apple.awt.ComponentModel.handleEvent(ComponentModel.java:263)
    at java.awt.Component.dispatchEventImpl(Component.java:4820)
    at java.awt.Component.dispatchEvent(Component.java:4572)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:704)
    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.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:677)
    at java.awt.EventQueue$3.run(EventQueue.java:675)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:674)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Already called beginDraw().
Exception in thread "Animation Thread" java.lang.NullPointerException
    at test1.setup(test1.java:75)
    at processing.core.PApplet.handleDraw(PApplet.java:2103)
    at processing.opengl.PGL$PGLListener.display(PGL.java:2593)
    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$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:672)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at test1.setup(test1.java:75)
    at processing.core.PApplet.handleDraw(PApplet.java:2103)
    at processing.opengl.PGL$PGLListener.display(PGL.java:2593)
    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.maybeDoSingleThreadedWorkaround(GLCanvas.java:827)
    at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:415)
    at javax.media.opengl.awt.GLCanvas.paint(GLCanvas.java:515)
    at sun.awt.RepaintArea.paintComponent(RepaintArea.java:276)
    at sun.awt.RepaintArea.paint(RepaintArea.java:241)
    at apple.awt.ComponentModel.handleEvent(ComponentModel.java:263)
    at java.awt.Component.dispatchEventImpl(Component.java:4820)
    at java.awt.Component.dispatchEvent(Component.java:4572)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:704)
    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.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:677)
    at java.awt.EventQueue$3.run(EventQueue.java:675)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:674)
    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)

EDIT3 (sorry for this): If I change your code and change the target of println with the patternPath string, like this:

println(loadPatternFilenames(patternPath));

it give me some "null" strings in the console (and then the NullPointer error)

amnon.owed

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

As the println shows, the problem is not in the dataPath nor in the loadPatternFilenames() method, because the filenames are loaded and printed to the console fine. So the problem is somewhere else, namely in the patternPath. Apparantly it's not set correctly. Please try again, the solution that has already been provided above. And use println's to test exactly where things go wrong. If it fails, please post your full code and highlight the line that gives you the null pointer exception.

kesson

Re: How to make a sketch "portable" with ARToolKit and patterns

1 year ago

I resolved by hard coding everytime the patternPath string is called, replacing the string with the folder "dataPath(/*folder*)" and it works...

I will do some tests again to see if I find the error... otherwise i will hard code everytime i will get this error...
Thanks a lot :)

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