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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; Q( Z7 Y% k C2 d
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
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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; ]1 T' H+ u" s2 i3 y2 u4 H
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感谢感谢
; h: n+ h( D% j: U错误如下：) F9 k' B, X2 g' h- r
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
' s6 q/ w: O$ ^: G$ G at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)2 w0 K9 @% G, o
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)( c3 O/ z) F1 Y' X; i+ }! g
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
# U4 F( k" G1 W at saf.v3d.Canvas2D.update(Canvas2D.java:113)
6 D/ C0 V A* K$ Y at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
- x. H. T$ z) i8 Q9 _ at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
5 ~9 X, y- {/ |# H1 w4 u% l Q# r at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
, F9 d+ Z) K v. E at java.lang.Thread.run(Unknown Source)! r% c# F3 j. q6 f! t/ c
Caused by: java.lang.NullPointerException
$ X6 A- o* g$ c' |- J at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130) k# d3 U4 H( l) F9 ^, [
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
; u0 W( f1 J* J. A* z- n( s9 T at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
3 {$ c' ` S3 o* f7 d2 ?, p5 v at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
2 G3 ?, r* `$ _$ j3 J- ? at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)5 \* ]4 k. Q2 q8 X6 p& Q
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)& l3 ^ q% t1 @" b3 N
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)7 D! j! j& \1 {' l/ O
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302); `/ _# l" @; @% \8 n9 d- T9 r
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)" f3 P( n7 [4 q1 c
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)$ M; d; j0 K4 b ^
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
1 V. r! k L7 r& p at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
" U# |# p6 a: y' \5 n* S" D at java.awt.event.InvocationEvent.dispatch(Unknown Source). \# W0 E; E7 T- p! R
at java.awt.EventQueue.dispatchEvent(Unknown Source): K: r6 E7 Y. m( B' r
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)# f9 L! _" W" t+ Z" B2 B
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
' I2 I3 D$ ]6 l at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
# F) Y& J9 \% ^* r at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
# Q3 o8 k, R+ \ f# _( r4 h2 i7 U5 V at java.awt.EventDispatchThread.pumpEvents(Unknown Source)3 H+ k* m% ]$ F3 j) F! `3 W
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
