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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. _+ X$ A! a1 X. |0 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
% {- k( V) S4 ?+ F4 L, U1 |$ [, U) d' P9 {# }+ c
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8 ^4 g8 n6 l# _* G7 U/ u
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感谢感谢
' P F b) S+ p2 |5 C错误如下：9 z3 _- G. A# h. A( Y I) R1 K
* b2 ^# M% r+ V( ]Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException% j0 K8 s. m$ T/ Y0 A
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
7 M& _; I9 J) |8 y' w% L at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410). m! R1 ~: N9 I' u6 h$ t
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
F# s; [4 t, D# y/ E. \ at saf.v3d.Canvas2D.update(Canvas2D.java:113)
. m% n v7 b: x1 ]& s0 q3 b at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
0 l" `0 N3 v6 T' k( L2 Z at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)& C' H6 X- {9 T
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)# r r, K X" h' L9 Z. z& s+ X: R
at java.lang.Thread.run(Unknown Source)
' s' G3 Y# W# F1 E JCaused by: java.lang.NullPointerException& ~* C5 Q, J1 |" h' E0 _4 p" c; u
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
( p/ C; F2 O8 {6 } at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
% ?" Q( m5 k& E& \' H) h at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88). ]% i: c; P6 m7 F+ P) e: U6 Q+ |
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)9 l& }3 J) ]1 v9 y6 V
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
4 a! k: b* Y" I! Y at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
6 [' a; K+ h4 Z; A at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
7 U, a0 Z/ Q- |9 Q# h' F at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
' m$ d! u2 V( Q/ |3 ~ at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
5 i! l- R5 `& q/ s at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)% }* m9 _$ R" d% j5 u" l3 S: F
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)( U" p" p- T) q6 v/ D3 b
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)3 ?" s' c! `7 {& ]0 y0 ]
at java.awt.event.InvocationEvent.dispatch(Unknown Source)- T9 z# o8 ^' s& F/ D6 I7 q. O
at java.awt.EventQueue.dispatchEvent(Unknown Source)
9 i' Q3 }6 Y! Y; v# ]& A at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)7 t* m' R9 H5 x* l9 r9 j
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)+ a& I1 N4 L! H9 h8 w# O4 F$ ^, ?
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
# ^9 k$ F) b- V! N at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
9 ~+ M4 @$ L8 Y) X0 h1 F# a/ O at java.awt.EventDispatchThread.pumpEvents(Unknown Source)# e1 x! |" c2 F
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
