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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
# N& T& E" ~! n, M8 |! c3 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 `4 H" F4 }& A* U! p
# e& @6 I& V, l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& |" k, t1 z, R {2 L) |4 S
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感谢感谢
% `8 I; ^7 |5 l. W L1 |错误如下：* G0 V' Q& V; j
: I z- i3 w1 l3 x% F6 YException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException' X8 h5 r9 s# z
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)3 F# R( g8 Z) w% T$ n
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
9 z8 `( ]& t- T# D8 U0 c4 w9 |) t- D0 O at javax.media.opengl.GLCanvas.display(GLCanvas.java:244): | B/ I1 X( ^: a' c @* R& m+ `
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
/ P5 A4 f$ C, V! y at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)3 K: P& {' t& Z& v7 U, W& |
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
7 Y) W9 |. s" Y a- G at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)1 ?: M; t+ {8 E5 y8 x; j
at java.lang.Thread.run(Unknown Source)
: G. k2 `) y+ R1 K& B8 m% O9 D6 z0 mCaused by: java.lang.NullPointerException
$ l9 ^* K- E g1 j at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
5 i* [, E5 _- |2 v5 t6 ? at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)7 X9 G4 ?! G) j5 u
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
* L$ h% d! T+ c8 b* O at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)6 ~9 t' H; ?# q6 b' i& \( q2 M
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
( \4 T/ o. c1 J5 M at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58); w3 h& Y8 a+ t; a- O- r3 Y& |
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)% d5 H+ J5 i7 Q T$ e: p
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
; Q2 o- M7 [6 D7 i3 A at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
( @7 n, R# v. {2 T, Q at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431), H3 u! c7 N9 {% q1 N4 L
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)0 ?% Y6 w! A) l7 P/ U3 W' d1 n+ H+ e4 q
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
0 L: j s* Z6 Q# U at java.awt.event.InvocationEvent.dispatch(Unknown Source)
7 Y, L6 F A W* J8 e: h at java.awt.EventQueue.dispatchEvent(Unknown Source)& w) Q" ^8 n* P8 E# K
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
3 c6 c& H, I3 }/ G: o at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
, r# d' Y$ K9 o7 j2 }; X at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
, ]4 h3 V6 `7 {7 k at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
, ~/ M" [) a0 H3 g; h% G r/ U7 D" i at java.awt.EventDispatchThread.pumpEvents(Unknown Source)9 r$ ? v0 u! v& k, U: F3 m
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
