repast s 建模中遇到的网络结构的问题

Lumonkey

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
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

7 y) n7 F8 N! z' S# B- c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

2 W3 A# R+ r1 p+ R% E感谢感谢
( v) R+ c) j+ _% {- F' H( r错误如下：
3 X+ Z$ M3 n2 J* b+ m9 _3 d: P1 B1 {
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
        at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
        at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
        at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
        at saf.v3d.Canvas2D.update(Canvas2D.java:113)
        at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
        at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
! }* B4 j0 o7 B$ o. P) P9 J        at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
9 m% b) r5 D6 h$ n        at java.lang.Thread.run(Unknown Source)
# \/ L; z% I: RCaused by: java.lang.NullPointerException
6 p" T9 [! [8 r0 a9 U$ k        at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
        at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
0 z' ]$ A3 F' M' M        at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
        at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
" _1 M+ a% M* ^8 a  u6 Z9 e        at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
        at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
& b; r% A$ }  \        at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
        at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
) X( {) {4 z2 a2 i$ G. b        at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
        at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
        at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
8 [, C, m. W. I        at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
2 W* ?) b* V8 a% J. G6 F  |        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
; Z# [3 g' d' r9 j        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
9 }' E9 e6 F9 Y0 C        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

pan2018

源代码贴上来看一下