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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/ z& M# @! h0 L5 P3 ]
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
$ X, F% M) F/ X* c- P' s. P. ?% T$ L% A1 i
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
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感谢感谢
0 I4 T+ V6 I7 r6 W错误如下：, j& G L( \0 ]
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
4 F$ }. [& |) l4 n+ E at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271) Z- N/ E9 W" v+ d/ A% P( ^5 l
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
# m \5 d: a0 w* D6 z at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
# A! \; a% V8 y, w/ I0 V; {! ` at saf.v3d.Canvas2D.update(Canvas2D.java:113)2 n' ]: a/ V9 U
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)3 a! Q: j* ^( k, z- S
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
! J# ]: |9 |' e) o. G at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)$ A7 N, K. j) O, k( Y9 M5 n4 E
at java.lang.Thread.run(Unknown Source), h) N- u6 k- {& y5 w; D
Caused by: java.lang.NullPointerException
8 S) j" C( }9 Z# K at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
# R: u4 p4 Z4 ]1 d4 H# f7 ~ at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
+ P3 R: I0 a5 H) l2 R2 `: s at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
/ ^- b8 F. o! r& ]4 o at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
9 }* z/ r" v3 E. \ at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
3 X% k" R* h6 Q P/ j at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
. l, J8 n% s2 C- m' c at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)0 Y* K) e7 c: c% b! `/ L
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)4 f8 R- l0 v3 Z" g) m! A
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
& Q) O* [+ Z% h. o6 I" r+ P at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)& L0 _* {+ a F6 q
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
; W' m2 B+ z( k at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
$ `/ E8 ~' H; e' X at java.awt.event.InvocationEvent.dispatch(Unknown Source)
: g7 b" V* j1 ] at java.awt.EventQueue.dispatchEvent(Unknown Source)
/ T9 u1 L, S" h. F, @0 }. g! Q, F at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
) o. z& B& z" H, u) y" G at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)) z7 |7 h( h9 v8 M! ]. `/ f+ E& N
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
; ?1 \8 Y) k* T1 P' [ at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
+ ?" ^9 l% R5 H at java.awt.EventDispatchThread.pumpEvents(Unknown Source). [# V3 ^- {8 u
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
