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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
0 R& R3 ]& j9 u4 P4 L w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
! t& Q. x7 L( {( n: K; r1 J, _3 x C! D9 ~+ ?
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! U9 T; o8 h) X* {/ h& c# ~+ k
% {6 b( O( N1 }* l- l& w* ~感谢感谢" L' y" r5 n! x: `7 W$ ~+ X
错误如下：
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: i3 x+ F1 Q9 D aException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException8 C4 k$ V5 {3 _6 {; k2 \8 B* m& F- ]) v: x
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)2 \1 P. y) i9 P0 D6 b" z9 ?
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)* [$ H# e$ Y3 C5 V+ a
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)' }+ P# L2 ~5 ]) f, h8 u) u
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
) E% E! }% C: Q: E* R9 Y- C1 K' `8 g at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358): g4 a" P6 Y g! o
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)7 C- E! W" m' f4 n3 e4 Y! h
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46), n' _; N3 B- }# Z5 c5 z! ?2 G
at java.lang.Thread.run(Unknown Source)
* a. `4 F9 j1 o7 [) ACaused by: java.lang.NullPointerException- R$ b, Z4 C4 p" a! Z+ o+ D9 }
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)/ P: v4 z; a) e. B' v z: T
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
4 j p; N0 S+ T u1 d at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
7 L) c/ K/ |0 P/ z5 o" L$ ], n at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)* A% B4 p% W# b* m5 d6 A
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
# ] y8 o! y: ?, d9 c4 d } at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)& c2 d/ V) B% X* K' r' S
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
: q9 t N. |( i0 c _ at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)3 K$ O/ N" [9 P- h7 h
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
3 G! B6 g& P* k- M at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)7 a9 H1 \: T3 d E; d! I* y
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
; B% L ?/ ?' A$ V& w: [' R' k at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)) L- f3 o' e) R; Z2 r# n, x% R
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
6 b a4 R/ n& t, ?( o* G) m at java.awt.EventQueue.dispatchEvent(Unknown Source)- u: R% \1 C+ S1 ^/ j
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)5 C% Q. q; q0 @' |# O
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)1 T& W! |$ m- o% U1 N6 t
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
: P3 v9 w' i5 _; N+ V3 o& m1 i at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
6 v% [ ?8 p# M& _; I' r' V6 y at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
' @1 V5 r0 _3 H6 V( x at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
