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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0 Y6 j9 ^- ?# T/ g! ?+ 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
7 P/ v e2 ^" Q9 `+ Z1 I1 |# B# Y. j- {; r6 b. l6 G: o* K
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1 s" Q7 j4 k: p% N
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感谢感谢
5 e, k# F6 U5 I6 ?5 T# y错误如下：
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5 X6 ~* d6 T; O- U. JException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
" l) O" [6 B3 I, y" P0 G! ~ at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
9 f* r6 b1 ]# s; g, b at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)2 }/ E: ]; \0 ~% ]
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)) w" H8 p" \ W0 Z$ P# s
at saf.v3d.Canvas2D.update(Canvas2D.java:113)/ R( ]8 G' u: t6 a; h; o
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)2 {# c/ ]& I4 _& u! f2 N
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)9 G- R; F( D* H" ^
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
0 o- s! V# E4 W6 @( R) g" D at java.lang.Thread.run(Unknown Source)* T( V. t' d9 [- J. X/ z
Caused by: java.lang.NullPointerException. a0 R2 X* H. e. f, ^
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
- d4 K4 _/ |. T4 x) [# Z at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88): `" @( j# ~% f0 X
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
* a: P. [2 T. H. y at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
4 A( s. k( j' W( u* W, S at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)# c4 \# u' L2 Q6 t" G, D; z' @9 c
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
9 i$ n. K& u2 k- D at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
1 v2 ^! J1 P7 {0 O at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
# \+ t3 H7 v8 l) c) ?4 K6 z# L at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
W5 H& C. L2 X5 D2 W4 l( D at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)+ |* k- U7 c V! L- P
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194); s3 r8 q4 i1 Z0 H& D
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
4 I- I2 `. f7 @6 s1 z# [ at java.awt.event.InvocationEvent.dispatch(Unknown Source)
: N$ t' V# D5 B" p7 r) n at java.awt.EventQueue.dispatchEvent(Unknown Source)- C! r/ H/ H# E. ^' l. t5 ?1 a
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)0 w* C/ ^( ~7 d9 v# O+ r
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)- r+ ^' P8 T) ?
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)0 P3 G6 Z( T; J$ N0 W7 w, o1 h; A
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
& l* b6 `$ d* B+ I2 R at java.awt.EventDispatchThread.pumpEvents(Unknown Source)% h7 [7 b" u& {! N4 L( O
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
