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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 \ _2 o% v# \/ g/ U
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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感谢感谢1 L8 ?4 w" I R2 Y: V
错误如下：
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( z S9 C. G9 \ l6 C- y' o4 CException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
7 ~8 ~6 c$ c) c( f# Y at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271) G. m( Y) n- M9 l. O( W
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)) Q: r# C* T% V. p- Q7 B( {' W
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)+ k; d* ] ~2 u* W
at saf.v3d.Canvas2D.update(Canvas2D.java:113)3 `) U. d! z7 U, _; O& B7 E
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
& z; Q+ \# X0 } at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)9 q/ M( j0 Y. S3 r, B2 J; F/ i
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
% V0 Z' I5 h+ y at java.lang.Thread.run(Unknown Source): \0 R, |- b6 ~ N
Caused by: java.lang.NullPointerException
" w4 O" H! x7 b at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
2 R4 l3 B. o4 S5 ]$ l at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
0 C9 F& R _5 E- E, u at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
3 l1 S; G# W+ U& M/ D4 ], t at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
/ _1 {7 y- s# S! ~7 ?( B" P' }$ f7 J$ j at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
! E. V$ O( r! v ^% X at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
+ k4 U0 X7 E: `4 e, k; h at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
& V3 K! I# g" B5 ]8 A, c1 U% E at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
3 X5 N* k+ l/ N; e; |# E2 @ at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85), M: R* L" J# {& b
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431): s# f5 p& ` {! E+ I1 Y& x* K
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)1 ~% g7 O& G' J
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
" D) Q& A- i# I! i; s' b- y7 m at java.awt.event.InvocationEvent.dispatch(Unknown Source)
1 n, Q5 u# {1 W; A at java.awt.EventQueue.dispatchEvent(Unknown Source)# U- w; J# c! A
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)/ T2 E# }; X6 \
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
/ [" }6 f: @, S6 @5 [6 u P at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
; l( A/ K' |, k4 s at java.awt.EventDispatchThread.pumpEvents(Unknown Source)+ j8 T3 f8 c! l# A+ m" G% y
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)$ h0 z M1 h% }7 I' u, O
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
