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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8 B6 ~- }9 _) I R& w! }4 f6 k
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
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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
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6 ^% w' T. z7 a, p9 o0 E0 ~ M; c感谢感谢$ b. w0 l5 Y6 D/ A
错误如下：5 h$ j( e% l: X7 Y! m
; X- _& ?, n! r0 j5 \, H' OException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException; d8 Y( I. x' k- r$ ~6 n- Q
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
0 P! r" p) ?6 W' O& Q at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)3 k. `% C4 g5 X) t' j/ |& r
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244); {3 z+ S7 r4 |2 ?9 F$ ^! a# _' {
at saf.v3d.Canvas2D.update(Canvas2D.java:113) v" U$ ]& H- H8 s0 C
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)' D2 o" B: k9 [* a) b- Z) `/ N
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)% \* W2 a' N7 M2 U6 T4 c9 _7 S/ ]
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46); T+ k( a7 g: _( Q
at java.lang.Thread.run(Unknown Source)6 d2 ]+ s; J+ M9 j* B
Caused by: java.lang.NullPointerException
( w2 \# y( K( G7 w8 I at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
5 V3 Z: a, l6 @+ L( U. p at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
}+ h* J7 F8 i7 x2 s5 x at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
/ [& q, s" U, M at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)6 M- M9 u/ G: q! r, w- f, \$ |
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
( P8 Q. Q3 Z5 D at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)" C0 d S. |5 |. K# s7 j1 R
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
7 ^* b6 ?4 K$ c8 ~ at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
U v$ ^% D3 z, a) x at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)2 o _* Y0 p; f( N7 o
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
" p& y) R3 B- [' y" H at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
1 o+ N1 W" R/ v% b1 x3 u) \ at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452): l( J/ f! |$ M! O# X: ?8 Q
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
1 \, H/ a! ~4 R1 Y6 ^9 R at java.awt.EventQueue.dispatchEvent(Unknown Source)1 v: I# [& {7 ~% H+ M
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
8 W9 U. z: w. |& h) [( i! _ at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source), F# y# B5 r- g! f8 I+ v- O
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)5 s7 C, G: x$ j+ U' f* P/ [
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
. c# O& }: H9 l* t$ y at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
4 N9 p: B; ?9 g: o* A: I7 f at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
