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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
$ J" m! R Y' n0 x& I0 V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% T0 f" ^3 Y* J5 ?7 I2 r5 T* r
" C' _) g! }# p- D% L n
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; d; W/ l% w, S" b8 U0 x& J5 r
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感谢感谢) V, R, l' P% e9 M2 `1 M
错误如下：7 T) X( u3 b6 L0 \, [
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
$ e. q' n% f# y& O. _ at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)' R2 y1 P" {4 o0 Y D
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)7 D3 o, ?/ q. m1 J: c% B: q, U
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)+ ~# j8 F* C% t2 c" X+ ^
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
k9 B/ g6 q; M- g* ^ at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)9 D# f, s B- c2 F; M( J, I' I# h
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57); p( t( H5 c0 E& Y& f- Y$ `& ]
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)8 H7 H1 n M9 t; O$ E" F. v- j$ y
at java.lang.Thread.run(Unknown Source)
, S( ~) x+ ]4 P0 V& vCaused by: java.lang.NullPointerException
/ }7 ^# d( m- W/ P" c( U" F" k6 Z1 C at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)* S' V1 R" ^# y# f/ ~: ^
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
+ B# K( l# d3 H9 t at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)! l# e/ L$ C, `; ^
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56) j8 E# S+ p- |9 w5 S& J- w
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439). {- p, V8 x4 {9 q) }! e7 {- J
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)& H* M0 z' H% Q. y7 @) \) I4 N
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
- b2 m, q/ V \( { at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
p7 _2 Z8 L& T- l at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
; @+ B- h2 t Z4 f5 m% o at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
: y% I0 ]; g7 }$ T$ L# U at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
& o+ w" q0 s1 x at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)$ E) y( y+ H6 v7 c2 g& Z2 Q
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
' C3 q2 }: c: g at java.awt.EventQueue.dispatchEvent(Unknown Source)
/ O3 r" z+ h1 {4 A# @5 f, D6 i at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)5 ^% N1 a1 X; s) N
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)- @4 a R* }5 t8 Z6 m
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)6 z4 q2 T( L6 ? e$ H/ u
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)% s, G& u" R y
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
L# a6 p( \, `' y$ w: I/ r/ X5 Y at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
