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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: s8 A$ y4 P! U) N9 C: ]
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
7 g; z( j2 G& p9 E5 V) v7 c* h
% u* i8 s) t. y( X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. [& B2 Q9 r0 `
/ L6 ^* n( C. f# g% y# Q感谢感谢
9 Z- z8 U( R+ m d- v) |( u错误如下：8 Q( _ _" y: ?7 \4 \; x- p( M
4 s5 ~0 C& h9 H7 H; o7 PException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
0 F) B$ s' x3 Q' t1 c# Q( V; Y( R at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
1 m+ W& K" N( y8 ~8 {8 c at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)9 @* _) `) Z( y, P/ j
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
$ c; U: W1 B) }% D- k at saf.v3d.Canvas2D.update(Canvas2D.java:113)4 o |( R; N$ |4 o( n: S9 T. Q: J
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)% {, w, a2 r8 x0 Q, s
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
4 X6 w+ X w; \- S at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
2 D- b/ ]7 U7 z9 z at java.lang.Thread.run(Unknown Source)
3 i& J& |1 f, M; _$ ]. jCaused by: java.lang.NullPointerException4 A0 F+ `# i2 y) T8 t# T; \
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)! Y" B3 t2 r! j) |& T7 |) b
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
L1 i! A5 ^, x _6 y at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)% F& B7 t/ ]0 |6 }
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)0 V1 Q4 p- n0 f- [5 L% f$ m
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)/ |' q; ^4 X1 Y! L. F! ~2 ?, Y
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)! v7 S. _, ^, }% R# G0 m
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
0 h! F! Y; M G at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)7 k1 K5 C( _9 ]) G
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
$ }6 C1 l5 `0 R0 {$ C at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)6 D9 s; n5 E/ a3 ]9 F8 e9 |9 H# H
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
8 T% k1 _0 A6 y( n" z1 T# H, V3 m5 o at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
( i a6 U4 W5 O8 n& [, b at java.awt.event.InvocationEvent.dispatch(Unknown Source)+ x7 L _, `; P* |3 F& H
at java.awt.EventQueue.dispatchEvent(Unknown Source)
$ G: T. S' l$ u( t1 r/ J6 r at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)! p) v0 X* e: |
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
9 `3 M% o$ [9 b1 w. l: ?. C at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
: o; y8 H2 ]+ B- L# N at java.awt.EventDispatchThread.pumpEvents(Unknown Source)* t5 G, h" I: [/ f) }4 l- d- t: n
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)2 B5 ~' l6 l/ h* a+ m# G
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
