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最近在用repast s 建模做供应链管理的问题，对于repast s 中网络结构的使用很不了解
9 u& N" d4 Y; e- p9 `/ y, ~" m写完代码之后编译出现错误，应该是显示方面的错误，我实在弄不懂% v- Y6 x: A1 {1 J. Q) y
3 f( H$ _ T7 b; d有没有哪位牛人帮我看看错误，或者给我个适用network结构的demo让我学习下) V; g3 l, F/ Z( W3 D/ `7 k
+ ~+ T% w, s* e5 o5 r. z; N
感谢感谢8 s _# s c6 z* E
错误如下：
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0 U* o1 {! L& V8 J( C8 kException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
! f0 _) a1 N& _; i% x& S* k at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)$ ?; b6 n- u, J6 ?* e) ]
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)/ o$ z2 q5 o+ S h' _9 x/ T. e
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)3 t1 B8 B+ H8 I+ o' M1 D. w* w
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
/ z+ A# J& S% I% B U ?6 V7 o at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
' j1 e6 ~6 m+ S7 P+ U! f' h at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)$ A7 L2 L: u% Y% o7 w+ ^7 z% V
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
. i$ s, @# J7 t- D1 C% c: J at java.lang.Thread.run(Unknown Source): N' K' ]: i% Y" D9 X: a) {
Caused by: java.lang.NullPointerException
+ ~/ h, r+ L4 z# o% e at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
* Z- S' Z$ h3 [7 p% S4 b at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)- y/ h8 l/ i/ D; |1 G7 o
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)& _9 H7 s; B2 d% m5 X) M; N
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
% G4 e6 k6 H E at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)% R. y. t$ V+ @; c4 E
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
# u! F' }6 o# y& [ at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
2 t/ {$ ? O' F* S& g( r. e/ t: H at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
( c. X& ?' W- C+ E* C- v1 K at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85): h5 \4 U, H. @2 v7 k) I( e/ U% C
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
& l8 Z4 w2 k$ \% {! R0 c6 s) E at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
6 {$ K9 }, N" g5 m5 T1 J5 a at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
1 c- X2 U$ q! M at java.awt.event.InvocationEvent.dispatch(Unknown Source). x: [( S2 Q$ g% }8 f
at java.awt.EventQueue.dispatchEvent(Unknown Source)# i9 j6 h4 q$ F1 P( ]" F+ U" i8 A
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)6 T, p9 D! y/ g/ D5 U
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)% D0 ^% f$ T8 }. q8 N
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)2 ^* T$ a+ Z, |) v2 g3 E
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
: X8 V! u/ Z& Y6 Z/ u9 |" N- ] at java.awt.EventDispatchThread.pumpEvents(Unknown Source)4 N% A+ P& |1 L( ?. F+ g( @
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
