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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
: Z. z" N- a/ T/ D- R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% P, ^+ s5 E- ~: f( e7 h
' ^' F' F, U, I/ P8 K: W0 o3 r7 ]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
/ \' Q# b: b9 J, K j1 {0 t" W4 _" S w' @ M1 E. r& L
感谢感谢: L1 E) g/ Q0 P3 W6 M
错误如下：
% w& C7 j: d& J" T6 u" e8 E+ b5 \- @6 Q8 Q- Z
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException2 k8 \3 I0 u- E# o% p
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)( t: u2 V( g. r% Q
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)8 u2 P9 G1 Z7 l; l2 P
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)7 p9 @- R, _, {" l
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
4 G- i6 A& V+ e V at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)2 T# H4 L; N5 t% G3 G1 q# |/ e
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
" I# k/ g J+ ^! a) ?! h* W at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
3 l( ]- O" C5 n- @; { at java.lang.Thread.run(Unknown Source)$ k- l* b7 ~" j& H
Caused by: java.lang.NullPointerException
z7 x% b3 e( x+ } at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130) ^8 k/ M9 D) k$ x
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
. B7 ?$ F5 z }& S3 \7 _( | at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
/ m+ F# B2 `7 n! ] at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)" u; X) V7 n, s5 i
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
3 J1 i" ^" `/ y1 C# P4 \2 m at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
, \& X6 K2 a) ~2 Q at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
2 L. z. t$ s( w. u6 `7 t$ K N at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)( X9 l0 S" j) y. j- i H6 h7 `/ x( y
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)2 d, Q3 w$ |! ^9 W0 O" j4 M
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)7 {4 e/ i. m. n N
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)5 g6 ~9 T/ z, @9 v& Q/ Z8 a) o5 h
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)5 _' B, _/ h( v( K( k8 D
at java.awt.event.InvocationEvent.dispatch(Unknown Source). k8 |) P' v1 g- v( X: H
at java.awt.EventQueue.dispatchEvent(Unknown Source)
' N3 V$ }# g2 B0 s3 R) C) M at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
~- R; C; S$ ]- w at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
4 Y% g d) Y7 W+ n3 `5 z at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
6 z8 q. N6 M8 ~, I at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
) e3 n- W; k- A8 h/ E, N, J# T at java.awt.EventDispatchThread.pumpEvents(Unknown Source)4 w# U7 q7 X9 C5 S
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
