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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
1 r4 n6 }0 N% \6 P5 o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# s) y" q# `( K9 c% Q8 n9 n6 Z
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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4 U1 [. W7 y9 Q" w
; G: P5 L$ L6 l T# w/ e1 c% @感谢感谢4 V" @8 t$ l1 G; y3 d
错误如下：
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
' I9 v# C* C" J G' W, | at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)+ h6 `" y* \" ?+ U: M
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
$ t( E* u# P3 q6 u at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)+ v8 V) B( T' Q# j0 Q/ G
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
4 V; T; L( l; p- y at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
7 u6 ~6 \' Q. _/ B9 ^- { at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
0 ]2 x& F0 M2 ] at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)! _5 V" r5 {$ {# f! a
at java.lang.Thread.run(Unknown Source)
+ I2 U# s0 k. l$ jCaused by: java.lang.NullPointerException6 G/ V3 O+ v2 T+ f4 p+ s
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)) [3 V6 _' l7 [) o3 I; q/ i" |( C
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
9 o. \4 N9 e2 R2 B' [ at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88): i1 S5 ]: n8 c* @1 Z
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
. p2 N) Z* R3 m0 d5 S at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439), b; N" h; y( U
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58): }" I& K6 W/ R0 Q1 N1 Q; Y
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
" g% s+ M: W" { at saf.v3d.Canvas2D.reshape(Canvas2D.java:302), G0 V5 |- F' M2 a5 D# ~2 h
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
/ E+ e+ v7 m K: B4 P1 D, i at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)! {+ u+ R* r! ?& J2 @% D
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194): B8 y: |+ \) L+ J3 ~) W; p; A
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
) n- T: w' K6 ^) G at java.awt.event.InvocationEvent.dispatch(Unknown Source)) d R1 N# p5 w& G: S1 G& ^8 o4 s$ y, t
at java.awt.EventQueue.dispatchEvent(Unknown Source)
3 K9 S& s) Z } at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)+ n7 V4 ~8 q* [
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
! W# W/ u6 @3 w9 W; _- P) c1 ~; ? at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
/ k7 @9 ^1 a) Y1 w2 b1 Z3 \3 R at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
% h. q- }" e* A at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
1 D6 c& n( }1 P7 V at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
