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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% {2 U O% }- c0 A6 H
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$ J3 W: ^4 Y# Y3 ?' F& N
) H& d( E. p, [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5 p2 o# h+ H D d, Z! P
* }% u; G. g) Y' F& n
感谢感谢
' c" c, Y! f0 Q! s错误如下：) Y) y$ }& D' {
7 H( {' p5 P( ^( p3 Q$ {
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException1 k D, r# J1 Z* Y
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271). D/ n6 Y$ r/ a) t! d; R% ~1 ]
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
* {/ a* B2 i$ J! K. J4 v( h% I at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
) T1 a& M' l/ j; K6 e& {! Y at saf.v3d.Canvas2D.update(Canvas2D.java:113)2 P9 [7 P* ~; M' u
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
! X. Z/ B( y; f& o+ M* l4 q at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)9 V: w+ g8 R; {2 R! |
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
( U' R( m9 Q% d7 d. t at java.lang.Thread.run(Unknown Source)
7 E, k! V: |& p4 T% Z- _Caused by: java.lang.NullPointerException
. \+ n2 J$ T' s& x M4 t at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
O% P) ^! t& n3 K- ` at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)! Q( a l. ?: A
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
& s: b4 n4 c& q2 T$ ?' G8 L at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
3 Z; B4 S( {% n, G at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
9 z; }! T% d5 N. U6 A0 K at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
; x% E: P; _# i. {" B. Q at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
7 p, H3 V- @9 F7 c6 K9 a at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)5 ?! f! a0 x8 h* X/ A
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)5 u$ i6 e8 [$ J5 D j
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
7 P" V1 n4 |# {! n. K# }) A2 N at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
; _& N( J* g, v) j: k; Q: V at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)& }7 L) a# h9 ], P5 V$ `( H
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
* n; ?3 e( {6 K6 N) j! d5 J5 b at java.awt.EventQueue.dispatchEvent(Unknown Source)
/ a7 w- i1 K8 K/ a' m5 n' `. Q# f at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
m, c; g" H0 x0 S( M' o at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
$ X( N/ x+ m! L I: [' i# D3 k at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
/ J2 T$ |; K1 ~2 Q0 i6 | at java.awt.EventDispatchThread.pumpEvents(Unknown Source). v) z3 k0 _ O, G" U2 v+ @5 w
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)/ l, U+ [ w7 Y/ K
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
