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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
' C1 o4 K# e9 M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3 m# w: ?" d. h4 t, ~# Z' ^: c
* f3 O6 c9 N$ F/ C- |! J1 r: @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! Q$ J/ J. d. n, F- s, o
' u( h( I; K) q/ N感谢感谢$ a6 f5 V0 w$ Q- C1 T5 Q4 y% ]+ Z2 N
错误如下：
# I; I2 c* _. M, F& g% |# ]) c1 k, k% o
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
- {" N+ k+ u9 y6 |( U at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
: S, `# l0 u6 q2 o: d$ q* p* h at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
: ^; w" T5 D+ B3 U3 @5 [1 b* W at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
5 [; }) q9 q0 f1 o W3 t at saf.v3d.Canvas2D.update(Canvas2D.java:113): f+ K, Y. ~- p" R0 b' S3 c
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)" F! C* p. B0 U3 j
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)5 p- G$ K& c+ f4 k
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
" q' y$ r2 P: ^. q- k at java.lang.Thread.run(Unknown Source)
' f! Y& m e) y. I7 V7 v! s$ k' XCaused by: java.lang.NullPointerException" {2 \* B# ~% @' B# D( @
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
5 ^ Z7 P7 Z" g/ ?$ \ at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
& @: I+ M$ c8 r5 P# o* Y0 i; n at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
& O3 P; Y2 j% Y at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)1 }2 ]( o% s$ h c, P u( y
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
8 p9 e# s2 l( ]+ ]2 E$ p0 B$ { at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
. W7 y# I# M& D6 }$ z. m* P( A at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
6 F X2 T8 k; Q* H% `& _, H9 ^ at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)' C! ?( u' B! t4 Y! f( u
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
* g4 Y9 \9 c' R at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
; ^8 C7 S# O0 R4 `; g+ v7 p at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)- l& s3 s6 }/ \; a: C
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
; C. M) _( ~/ E- u, k) Q3 E% L3 N at java.awt.event.InvocationEvent.dispatch(Unknown Source)
. ~' @+ x: |6 {8 v9 U3 U/ u g at java.awt.EventQueue.dispatchEvent(Unknown Source)! F! m0 L2 T: R: F; F; t5 r5 C
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
, {* ^- T; E+ K0 H; G# @! W at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
/ P5 X" z W4 f i/ _ at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
8 b0 ^) t; k: o, G/ o at java.awt.EventDispatchThread.pumpEvents(Unknown Source)4 u/ K8 G* B: Y4 }5 e* \5 i, A/ H
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
6 U# `6 |$ b! Q# N at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
