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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
/ a, q- P3 A2 o& D. x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8 K/ H2 u( I3 o) \1 W
* o9 U. V3 s1 H0 E- Z' h' E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
2 m1 a' R, e1 P
$ S. y. U, O; b0 N; C" u7 u感谢感谢6 t% w* c. m& `0 Q
错误如下：
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1 O8 @, D- \7 q) y' \Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
, ], A* g- M" Q; t at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)9 R. j- n+ E( }
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)* k3 I0 f' Y, G8 }
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
5 e& H0 I5 Q0 b; P$ }3 A at saf.v3d.Canvas2D.update(Canvas2D.java:113)% y4 i6 L& ]; Z
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)$ t2 Q0 Q7 C% W8 W! r x
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
5 f( l& I: U! P; D at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46) J! N4 j, |6 a' B* |
at java.lang.Thread.run(Unknown Source)# W1 c9 Z2 }! H# A6 H
Caused by: java.lang.NullPointerException9 x) ?* n+ D r0 X
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
, ~$ {8 A0 L. h' }+ p6 H4 d+ z at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)! _" O0 `* Q- ~3 ]! o% v
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)8 d2 P. \9 N" L$ c; l/ I
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)% @' F9 _' R2 G9 l: F4 h
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)- Y0 Z" K6 |/ C; E& n# E. Z5 A
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
) v- w. F& h' S% V4 F at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)% g4 i1 J9 d2 e* o9 c
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)5 N! j, w2 Y' ?. @4 W
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)+ N, w/ o* n+ n' ~
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)) T7 h9 X8 w1 w2 s! @" l3 v( q
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
# G3 K$ ]1 H* f1 O: k0 n1 Q8 q at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
* w m, s- Y! t at java.awt.event.InvocationEvent.dispatch(Unknown Source)/ n1 g/ F3 b8 _% E0 P
at java.awt.EventQueue.dispatchEvent(Unknown Source), C) M2 a4 o# q* U3 K& i
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)3 O, j& d$ |0 ?$ t/ o
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)& L3 a/ o' h3 j$ \# x* n) o+ ]
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
3 E( z8 _' |/ |- A) F& t at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
% Q: H( x( Z0 \/ @$ x at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
4 p7 ^- B+ k' p; A at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
