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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# D r8 Q" f- K# T# h0 F
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# g/ {$ F1 X# a, p5 q- |
6 o9 D: P; z+ N) z' A3 A0 ~* J
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. n: t# Z f% R' P
% t/ X0 Y$ e- N% y: Z" o/ V感谢感谢; ^. J; v3 |2 ]1 O) \; l, Q# K* s
错误如下：# J3 u* N# e1 G$ r$ l
* E5 d' r, j* T. M& x6 e. rException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException7 t0 H2 p+ l! Y- p5 [
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271): D" O5 p8 W; d/ k$ d# M
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)! t: Z5 d$ C) [2 |# l# R5 B- c
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
P2 y# w# T: z2 \- V at saf.v3d.Canvas2D.update(Canvas2D.java:113)6 P# K$ F3 m3 A5 Z' T) B/ o" K
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)$ u) W1 c2 m1 l* M/ J% r9 i. r. F
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)& P2 Q/ }" z9 J& E4 d: `
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
8 N- m% J' N' T M at java.lang.Thread.run(Unknown Source); h4 `; }$ r7 D9 C+ n
Caused by: java.lang.NullPointerException. v# p2 i8 I) ~' q
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
# S6 y- P8 x- j, v3 F* b at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
4 B ^8 a; x, x* m; n at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
6 ^% n* A1 v! q- { at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)6 g% I& z' C; U3 N1 F8 i& n4 n
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)3 V3 D$ ~& V* }7 B1 L2 d
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
! A4 S6 m3 z" Z1 f7 o8 p at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)" I5 S/ d: h6 h" U( }* ~
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)9 ]) z, `" |7 x- \7 g; j! e8 K
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
( U0 G ~/ h3 A1 l N& k% Q1 I at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)" `+ h- E- q/ m9 W4 l* j: {3 W6 e, N
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)+ u9 n6 P5 S8 k( s6 R
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)+ I5 b+ B, R# M
at java.awt.event.InvocationEvent.dispatch(Unknown Source). c' U* b1 Q0 D0 D; I
at java.awt.EventQueue.dispatchEvent(Unknown Source)
9 k% T, a( b6 u* Z, |6 Z2 Z at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)6 `: s" t' g+ f" D/ |9 p8 M
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
; E4 K: T- v0 D5 c; @* g4 u7 Z at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
' u, z& K7 W% N0 t) { at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
* N9 D: J3 W# `) C$ { at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
4 C4 ~9 N7 m3 A- I2 [. q2 |& B at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
