Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

L05_

Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

in Contributed Library Questions • 1 year ago

I just downloaded and installed the controlP5 library (v0.6.12) onto my Mac by putting in the ./Documents/Processing/libraries folder. When I run the ControlP5controllerOnTop3D.pde example, it returns the following error message:

java.lang.NullPointerException

at processing.app.Library.getClassPath(Library.java:285)

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:405)

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:197)

at processing.mode.java.JavaBuild.build(JavaBuild.java:156)

at processing.mode.java.JavaBuild.build(JavaBuild.java:135)

at processing.mode.java.JavaMode.handleRun(JavaMode.java:176)

at processing.mode.java.JavaEditor$20.run(JavaEditor.java:481)

at java.lang.Thread.run(Thread.java:680)

I am using Processing 2.0a4 because I need to use JSyphon. I intended to use controlP5 to add a hideable menu that would hover over a 3D sketch. Does controlP5 work in Processing 2.0a4? There were a couple of other examples that returned the same error. I didn't change the code in any of them.

Replies(5)

andreas.s..

Re: Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

1 year ago

hi, yes, works for me (osx 10.6.6, processing 2.0a4, controlP5 0.6.12). did you try restarting processing? I am guessing here, but it seems the path to the libraries folder cant be found?

L05_

Re: Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

1 year ago

Thank you for replying Andreas. I tried restarting both Processing and my computer. Many of the other examples seemed to run okay, so I thought the path to the libraries folder was working. Is it possible that this example is using a different path, and if so, how would I check for that?

jeff_g

Re: Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

1 year ago

Worked for me as well. Might want to build from the Processing source. Processing 2.0a4 was a little flaky. Andres Colubri has done a good bit of work on the 3D components since then.

L05_

Re: Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

1 year ago

Thanks for the feedback, Jeff. I've seen people refer to building from the Processing source, but I'm not sure what that means. Can anyone provide a tutorial or walk-through link that might better explain this? I am somewhat new to Processing, so thank you in advance for your time and patience.

L05_

Re: Example "ControlP5controllerOnTop3D.pde" returns NullPointerException

1 year ago

Is this the process you are referring to?

http://code.google.com/p/processing/wiki/BuildInstructions

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