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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; F& p1 d1 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5 z" O- D d" ?: i! ]: w
N" U$ N7 i; C: ]) B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: \7 _8 K7 U- ~" ^& ?" x# G z
) D0 g+ O) [5 z: }0 [2 g0 i% [感谢感谢3 x/ T6 X( K1 C6 x& N. W) t
错误如下：
% ~! w2 R! H# O% l+ Y$ ~+ X0 Y: g7 [5 E- a* R% n6 ^/ k" d. V8 U
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
: \" r" x3 E& a5 p( J at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
' T. y4 a6 \1 o$ ~ at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
% w% P1 W8 x# M; m! ` v at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
# F. i# R, n h$ Y$ F" U at saf.v3d.Canvas2D.update(Canvas2D.java:113)
6 j* }/ N9 {% V! P G# H at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358): _5 e$ G9 P2 {, @+ G
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)/ X# p/ P5 ~/ y( L: ~& L
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
' O) _4 E: B7 c- R3 ` at java.lang.Thread.run(Unknown Source)5 g" o4 A9 G0 S/ V# v: D
Caused by: java.lang.NullPointerException1 w, G5 K3 s# Q7 z7 o* d
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
& a6 U- ]& N. @1 r/ g+ O, p at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)+ v; Z% Y6 Z( k) v+ T5 f
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)3 `% Y! T5 O, j; E( B
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
) T8 P& F- |0 l! i1 o! p5 M at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
- {4 I8 f+ V' S: O w at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
7 q6 N% n" q0 }4 m at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)9 A+ l! d5 a5 G2 Q% J' M
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
" b) O8 W0 V' Z$ v" D; A at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)5 U! t4 U, t4 H: q& S
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)& h8 T% I, x8 ]& ?
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
3 Q1 P* f j& m9 A# |2 j at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
: W8 w3 v5 R% m; G2 A3 ^6 x at java.awt.event.InvocationEvent.dispatch(Unknown Source)# t# _+ s; w2 e5 \* E( e9 Q
at java.awt.EventQueue.dispatchEvent(Unknown Source)3 U) g% Y: r/ s: M' O# k5 M
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
1 q& A+ G4 B, {+ j0 H at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
2 w5 {! {3 u$ h0 J4 [ at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
9 O, p" D2 [6 B! S6 V$ e& x5 N3 z6 _ at java.awt.EventDispatchThread.pumpEvents(Unknown Source)- ]$ P9 t, ` `1 C7 U i
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
& z( Y1 N4 n9 q, f. x at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
