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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+ p. _+ T4 m) t3 u, p- q! ~4 o
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
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& _7 j3 p. Z6 J0 K$ F4 s感谢感谢& q& |6 B. h2 V* Q
错误如下：
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException, j+ I0 H4 \! p2 t# e1 \+ a
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
3 [+ Q+ P6 k6 j7 R# W/ A at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)& R0 \4 M/ G6 Y% ~1 c
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
7 [5 e) X% m5 U at saf.v3d.Canvas2D.update(Canvas2D.java:113)4 f$ [/ J9 g# E
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358), A A$ d3 J6 k. O
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
% E* s. `7 a4 d' l, b at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)9 a: c( s2 ]/ C0 w5 u+ r: X
at java.lang.Thread.run(Unknown Source)
! J" L# ?8 I0 C( y2 {# dCaused by: java.lang.NullPointerException) r& z( b) F1 ?: {8 L& F. i% |0 _
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130); m2 `& {/ m) a
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)$ D. \# G) z4 \
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)8 z& M1 K" Y0 X) t2 }, [
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
9 h$ Y3 b; ^# t# Z& F at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
6 ]! {8 }0 F- j Y3 w at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)' ~3 |3 N g0 [: o9 i# F. e
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
$ O- c. s, E; u at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
" G; c* U0 T! t) k) w) \ at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)! P7 G" N7 f# g' j
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
1 G4 y1 [# F, i m at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
+ z% ?: W: P8 n" {9 ~: p7 d8 A; t at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)1 u% Z* g6 y L6 B0 ~7 F: _' F9 s
at java.awt.event.InvocationEvent.dispatch(Unknown Source)7 I( ?* S) r: ?" A3 v
at java.awt.EventQueue.dispatchEvent(Unknown Source)0 M( h s% j6 P) r
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
6 B" c+ X# u8 c5 g J5 d$ H& N at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
4 b. P1 `: z6 q9 I( } at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
2 u7 e* v( k# }1 n% _ x at java.awt.EventDispatchThread.pumpEvents(Unknown Source)) F4 _, j$ A7 U5 L) r* x! P8 g7 p
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
1 z( W# s& J9 ~; D at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
