Very weird error when writing text to screen

[tgk]

I've successfully used penumbra for a visualization project drawing normal vertices and more complex figures. One thing that simply won't work, however, is writing text to the screen. Even this very simple example fail.

My output is

 [null] java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassCastException: java.lang.Integer
 [null]     at clojure.lang.LazySeq.sval(LazySeq.java:47)
 [null]     at clojure.lang.LazySeq.seq(LazySeq.java:56)
 [null]     at clojure.lang.RT.seq(RT.java:440)
 [null]     at clojure.core$seq__4245.invoke(core.clj:105)
 [null]     at penumbra.app.event$publish_BANG___4605.doInvoke(event.clj:30)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:430)
 [null]     at clojure.lang.AFn.applyToHelper(AFn.java:175)
 [null]     at clojure.lang.RestFn.applyTo(RestFn.java:137)
 [null]     at clojure.core$apply__4370.invoke(core.clj:436)
 [null]     at penumbra.app$publish_BANG___5136.doInvoke(app.clj:69)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:415)
 [null]     at penumbra.app$single_thread_main_loop__5300$fn__5303.invoke(app.clj:326)
 [null]     at penumbra.app$single_thread_main_loop__5300.invoke(app.clj:324)
 [null]     at penumbra.app$single_thread_main_loop__5300.invoke(app.clj:313)
 [null]     at penumbra.app.loop$primary_loop__4991$fn__5013.invoke(loop.clj:87)
 [null]     at penumbra.app$start_single_thread__5314$fn__5316$fn__5318.invoke(app.clj:339)
 [null]     at penumbra.app$start_single_thread__5314$fn__5316.invoke(app.clj:337)
 [null]     at penumbra.app.loop$primary_loop__4991.invoke(loop.clj:84)
 [null]     at penumbra.app$start_single_thread__5314.invoke(app.clj:334)
 [null]     at penumbra.app$start__5327.invoke(app.clj:376)
 [null]     at penumbra.app$start__5327.invoke(app.clj:373)
 [null] <<STOPPED: Penumbra
 [null]     at penumbra_fail$view_text__5360.doInvoke(penumbra_fail.clj:10)
 [null]   0.50 seconds elapsed
 [null]   Allocated texture memory: 0.00M (0.00% in use)>>
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:402)
 [null]     at user$eval__1.invoke(NO_SOURCE_FILE:1)
 [null]     at clojure.lang.Compiler.eval(Compiler.java:4642)
 [null]     at clojure.lang.Compiler.eval(Compiler.java:4634)
 [null]     at clojure.core$eval__5236.invoke(core.clj:2017)
 [null]     at clojure.main$eval_opt__7411.invoke(main.clj:227)
 [null]     at clojure.main$initialize__7418.invoke(main.clj:246)
 [null]     at clojure.main$null_opt__7446.invoke(main.clj:271)
 [null]     at clojure.main$main__7466.doInvoke(main.clj:346)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:426)
 [null]     at clojure.lang.Var.invoke(Var.java:363)
 [null]     at clojure.lang.AFn.applyToHelper(AFn.java:175)
 [null]     at clojure.lang.Var.applyTo(Var.java:476)
 [null]     at clojure.main.main(main.java:37)
 [null] Caused by: java.lang.RuntimeException: java.lang.ClassCastException: java.lang.Integer
 [null]     at clojure.lang.LazySeq.sval(LazySeq.java:47)
 [null]     at clojure.lang.LazySeq.seq(LazySeq.java:56)
 [null]     at clojure.lang.RT.seq(RT.java:440)
 [null]     at clojure.core$seq__4245.invoke(core.clj:105)
 [null]     at clojure.core$filter__5084$fn__5086.invoke(core.clj:1794)
 [null]     at clojure.lang.LazySeq.sval(LazySeq.java:42)
 [null]     ... 35 more
 [null] Caused by: java.lang.ClassCastException: java.lang.Integer
 [null]     at java.awt.Font.initFromMap(Font.java:520)
 [null]     at java.awt.Font.<init>(Font.java:489)
 [null]     at penumbra.text$font__4328.doInvoke(text.clj:34)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:443)
 [null]     at penumbra.text$write_to_screen__4344.invoke(text.clj:46)
 [null]     at penumbra_fail$display__5356.invoke(penumbra_fail.clj:7)
 [null]     at clojure.lang.AFn.applyToHelper(AFn.java:175)
 [null]     at clojure.lang.AFn.applyTo(AFn.java:164)
 [null]     at clojure.core$apply__4370.invoke(core.clj:436)
 [null]     at penumbra.app.loop$timed_fn__4879$fn__4881.doInvoke(loop.clj:39)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:413)
 [null]     at penumbra.app$create__5146$fn__5157.invoke(app.clj:106)
 [null]     at clojure.lang.AFn.applyToHelper(AFn.java:171)
 [null]     at clojure.lang.AFn.applyTo(AFn.java:164)
 [null]     at clojure.core$apply__4370.invoke(core.clj:436)
 [null]     at penumbra.app.event$publish_BANG___4605$wrapper_fn__4607$fn__4609.doInvoke(event.clj:28)
 [null]     at clojure.lang.RestFn.invoke(RestFn.java:402)
 [null]     at clojure.lang.AFn.applyToHelper(AFn.java:171)
 [null]     at clojure.lang.RestFn.applyTo(RestFn.java:137)
 [null]     at clojure.core$apply__4370.invoke(core.clj:436)
 [null]     at penumbra.app.event$publish_BANG___4605$fn__4617.invoke(event.clj:30)
 [null]     at clojure.core$map__5053$fn__5055.invoke(core.clj:1762)
 [null]     at clojure.lang.LazySeq.sval(LazySeq.java:42)
 [null]     ... 40 more

I'm running the program on Mac OS X version 10.5.8, and I do have the Tahoma type installed. I'm using Clojure 1.1.0 and the appropriate libraries. This is my project.clj file.

[tgk]

Apparently, switching to java version 1.6 solves this problem.

[ztellman]

Yeah, apparently there are differences in how fonts are handled between 1.5 and 1.6. I'm going to leave this open until I document somewhere that 1.6 the targeted JVM version.