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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
$ i- U9 @) x4 Q6 W! ]3 F( J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2 a4 i% n+ B0 d4 e1 ]
$ e% h8 y/ g+ ^% I
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" ^) Y& Z5 p' {% p' H
, L+ |, f) C& c8 \9 S感谢感谢 ?! v8 w* \3 V. u8 q
错误如下：3 @! y6 r" A3 a4 t
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
1 N( P; p3 r: ?5 [ at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)% d! M6 P- m9 B. e. A- ^- H2 x
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410): s+ g5 G- |- g& Y* }1 y! g
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
; o: B; i( c7 ?) @$ ~ at saf.v3d.Canvas2D.update(Canvas2D.java:113)7 y- ]1 H( V* z! g0 E. c- _5 O
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)) `% i! ^8 V6 X; D; Z( n2 @- o
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
% p& L& {6 Z4 k7 r$ n8 C at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)! F* n1 M! E- P5 l1 K1 t
at java.lang.Thread.run(Unknown Source)
3 B1 _2 @ C# z4 m' j7 j. MCaused by: java.lang.NullPointerException: D M) ^1 }2 H, I8 ^1 l( B
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)) s/ g; |4 o; Y" r1 T3 q
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)6 f( d# \ i' R/ f7 x6 n8 r4 o4 B8 v- e
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
/ l! s. M3 ~7 h& V at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
) f0 L" M9 p' j- N at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
% n8 G4 T! D+ s9 P+ e2 R at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
/ K% ]6 T4 n9 }( H, [ at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273): f/ E. q" {* ^
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)) V# ^0 p! R" d7 L5 ?1 L, e
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)5 J& y# b, t* M
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431), D/ \) Y! u$ r7 b2 V V2 F
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
& i3 [6 w7 x/ i5 q at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
" X9 s7 B7 ?5 A6 _ at java.awt.event.InvocationEvent.dispatch(Unknown Source): R& h& U# l2 E0 L& b
at java.awt.EventQueue.dispatchEvent(Unknown Source)8 ^4 E- a6 ]2 L4 q& ]5 Y
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)" z# s0 b' n9 y$ q: q6 u$ C2 ]5 V
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)! r1 |, }2 s7 l
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)9 L8 F+ J# p2 a
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
9 T4 e# R( e) ~7 t/ Y, x at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
; k# E. d2 M% M7 ~5 W4 ? at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
