Created
April 9, 2012 06:13
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Strange error when using quil with SimpleOpenNI
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| Exception in thread "Animation Thread" java.lang.ClassCastException: quil.applet.proxy$processing.core.PApplet$IMeta$c506c738 cannot be cast to clojure.lang.IDeref | |
| at clojure.core$deref.invoke(core.clj:2078) | |
| at quil_kinect.core$setup.invoke(NO_SOURCE_FILE:1) | |
| at clojure.lang.Var.invoke(Var.java:397) | |
| at quil.applet$applet$setup_fn__2190.invoke(applet.clj:192) | |
| at quil.applet$applet$fn__2265.invoke(applet.clj:290) | |
| at quil.applet.proxy$processing.core.PApplet$IMeta$c506c738.setup(Unknown Source) | |
| at processing.core.PApplet.handleDraw(Unknown Source) | |
| at quil.applet.proxy$processing.core.PApplet$IMeta$c506c738.handleDraw(Unknown Source) | |
| at processing.core.PApplet.run(Unknown Source) | |
| at quil.applet.proxy$processing.core.PApplet$IMeta$c506c738.run(Unknown Source) | |
| at java.lang.Thread.run(Thread.java:680) |
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This error arises when running the code in the derefs branch of my quil-kinect project. It appears than anything def'd in the core namespace will not implement the usual core protocols. For example, trying to defn and then invoking the resultant function causes a cast exception when casting to clojure.lang.IFn.
The fault lies with the processing SimpleOpenNI library, since not importing it causes this issue to go away. The source for what's being imported is available here.