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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
- w+ L% a4 s$ h4 e' n9 v! U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
0 S& N, B: n. @9 j, `' ?2 ^! F1 {7 ^" ~/ d4 C; 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9 i7 Q9 E) I& i8 }* v/ @5 n
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感谢感谢
* {# ]+ x7 y, a9 h" n/ J( E7 B错误如下：
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
% z* |4 ]. Y H+ \9 m5 ~ at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
" i) d) j- p" J+ V# s& C2 k at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)# Y; {; `/ x2 x- M+ P/ R; o
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
# H. _# O! D T7 b/ K8 C% a( [ at saf.v3d.Canvas2D.update(Canvas2D.java:113)
8 [ k# ~% a: P U7 w- K) m: u0 g at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)0 d p+ [1 x, t* B6 y, P" Q
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
' [& K* u; `$ b+ W+ `! z at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)8 |5 e8 X& h) U7 A% {4 l, I
at java.lang.Thread.run(Unknown Source)7 U4 c; a3 _1 Q" q2 y
Caused by: java.lang.NullPointerException- i4 A. q$ y; K0 z2 @3 {6 k4 W2 Z
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
1 N5 g! i, H$ q( D# l$ L at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)8 A6 R B$ f$ z- O8 R) @' _8 t
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)1 R5 ~/ e5 i, X& e
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)# F- ]# h5 K" p6 H
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
6 y% M" D% R# m at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)+ C# h# G- R/ w0 p$ Z0 r
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
% Z5 b; ?' _, A' O& [ at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
3 B6 q2 v! U3 ~1 H+ m5 f* ` at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)5 k. l! k7 y) K1 I) e3 J
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
7 q2 {7 R9 i. K( ?- d. }/ Y at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)( b* M" l: d6 l: X0 ^
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
/ {6 d" a' D! ^* t3 J. X& K0 X: v/ b. a at java.awt.event.InvocationEvent.dispatch(Unknown Source)' b; u2 m) x/ O8 P- r& R; ]
at java.awt.EventQueue.dispatchEvent(Unknown Source)' }* T1 i/ k1 z
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
% A* w t1 b0 b3 H, u; ] d. ]" [3 ]4 ` at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)$ C' K$ K# ]$ y* T5 i
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
4 g3 U4 {0 c) s9 t# A' Q at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
3 W$ y% I9 O S# q V7 W4 c9 o, ` at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
" N1 w. g1 p( W9 f# K6 k at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
