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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
6 X1 J/ f5 ~$ m$ E; M% [; l4 P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: v1 d/ j( ]- o( }
( O* _( T2 g' [8 p- y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
5 h7 r( u$ O" X3 f+ @: S
- W. ]3 Z; h% E) q/ X感谢感谢0 k1 S2 `& X7 X1 X- p
错误如下：: b5 ?( ~) C0 o9 @- z* u
8 R$ l" h$ R- t; ]; b6 u
Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException# B7 W; I q( ]& K0 I7 y# E
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)3 | P+ r' G; O; m: {- e
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
! l! y6 V G) E, e u I at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
3 |" L' O* t" a" q9 X2 I at saf.v3d.Canvas2D.update(Canvas2D.java:113)! I8 o+ E* U8 f6 i6 l! l4 o/ l% ^
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
# X' T' P2 Q: e at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
; @) r9 C8 N6 ] at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
/ Q, ~/ J3 b' g/ p* o1 ~ at java.lang.Thread.run(Unknown Source)
, `- H8 X: A9 H$ G' v; ECaused by: java.lang.NullPointerException
& X; k" {2 @6 W+ G, e at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)- e8 x' N3 l q! G. m
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)+ e! L: ~- }, h! ]
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)" R6 c- N( V( E: }
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
, c V% D" I$ N' s at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)% z* W( `5 g8 E% j5 S( D) j
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
- }0 w+ \- o0 j7 e& k at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
: r* k2 a5 g& ~+ K! ]2 c! g. R at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)0 d3 v5 k k1 X6 W2 j
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)! ]% a+ L1 ^" b7 I* M0 m) O' b0 K
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)8 p A, Q' A. \$ B# m
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
, j" [8 l- \7 Z% I6 }1 K! d at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
% s. R V: I4 Q at java.awt.event.InvocationEvent.dispatch(Unknown Source)
! l5 I# u' a% U. z% |$ n at java.awt.EventQueue.dispatchEvent(Unknown Source)
/ g+ |6 f' x3 ?3 i \ at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source); u" v# v% \+ S0 U/ x$ d
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)3 F" W5 @0 U5 G% _/ }
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
3 V. s: P# k: S' P# ^ at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
/ i! ` g- J2 b" U, F6 j at java.awt.EventDispatchThread.pumpEvents(Unknown Source), ] ~4 {! b( c% A$ x1 [
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
