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

( S5 E! X% a& }3 t; Z$ @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

感谢感谢
3 j: C% l1 A  L& x1 z错误如下：

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)
4 y4 B: |( {$ D% z        at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
5 m3 A5 m8 r2 l        at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
        at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
        at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
2 S, c! B4 |% L$ w3 |$ X        at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
        at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
        at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
( e- y4 R) I" D        at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
        at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
& D) a/ _* H7 v/ @: a3 a        at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
        at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
$ I/ [' M) H( Y. E  `        at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
        at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
) J9 x: a" ^% N" T' J( O        at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
  b  i) n- j" \9 }# t        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
# H8 |9 A& G' J: Y% M- D        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
5 T0 z* u( j! z+ P0 |  o        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

pan2018

源代码贴上来看一下