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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
$ T E$ c8 N6 u1 x" W1 }/ X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
. U. l- |9 R- K
& F6 F O8 `: R. ?# R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, J) G7 `3 `& k9 Q) _3 s" y
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感谢感谢, i- k/ M7 P- K
错误如下：2 |* v T: e9 H6 K1 p# U
/ K Q1 u9 ]) \' L- kException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
% V# a$ t3 x9 s9 I8 j at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
; e" ~% g" Y/ m' N, A at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
& J/ \4 O' [- T" b4 G) s! j at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
5 X t! G% Z: q6 P. ]9 b* D Y at saf.v3d.Canvas2D.update(Canvas2D.java:113)
/ h) j6 c# A6 C8 _ at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
3 [% ^1 k, i" c at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
3 S9 J# U% {- C% e at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
8 d+ ^- k0 D9 r7 ^% o$ V2 {6 Q at java.lang.Thread.run(Unknown Source). H5 Y d b- Q3 w5 W
Caused by: java.lang.NullPointerException
2 f2 U' ~6 R: u1 P4 @; q7 _ at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)4 o0 i/ j* X) h) h$ T
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)3 t; t5 _ C" s ? x6 J* f
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
$ D3 |$ x1 @, a at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
! a. U) P/ ^; Q6 q% d$ M at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)' m! ~1 K( H9 D2 v% Q! l# m% B
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
$ H7 k6 Q3 @$ y. J# T at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
# i' b p8 D7 ~0 {0 I at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)- h; l; R+ y B0 B$ W# }: m
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
% }3 |! [& |& F3 }) F+ A. k$ z9 @ at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
* V, j4 Y. |- W3 N5 X5 J9 L at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)1 r6 r) j: {, ~$ ~# M. t) N
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
- X' ^) x! @' z% j/ G at java.awt.event.InvocationEvent.dispatch(Unknown Source)
8 N% Q+ c8 X9 B: P7 q/ V" R) F+ T at java.awt.EventQueue.dispatchEvent(Unknown Source)
" p$ r! O* U* g) z/ A, o: ? at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
6 {$ K% G+ D1 r6 d+ Y at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
6 O. R4 B( g4 ^4 }, H, x; o! W at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)% C8 j4 C: R6 k& R) v) I
at java.awt.EventDispatchThread.pumpEvents(Unknown Source); |$ o( }+ z1 v5 N8 y3 v+ T
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
5 Q, J$ D ?) c6 M+ [, g" G at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
