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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
. q6 [4 U$ u8 k, f3 x' Z% 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! [2 I' Q' C* p# v
1 ^' ?8 S: r, X" S) T& ]8 ]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- t" }" {* _# v- c7 o! X
2 ]- X7 G" f6 l. I" h+ h
感谢感谢
, H3 V) p0 q2 J# h5 v; u# H错误如下： ]/ k& j; w k" h- Z! B! ?
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException! _/ T+ C6 L5 I1 F2 `& _9 @/ o
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
' I, V4 {( o8 l# D( R at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
# ~/ U% f2 \- t; M6 D at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
0 o* v: z, X$ g: I& @0 x6 U at saf.v3d.Canvas2D.update(Canvas2D.java:113)
- m4 `' `6 a8 e. ~2 f$ B6 t( ~ at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)2 W8 b. A/ n. w+ d4 e. ]6 {4 l1 \
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
6 c! `* e f+ L4 S+ B6 m' W+ O9 k at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)+ p2 J# }) [9 M. O
at java.lang.Thread.run(Unknown Source)
$ s& n+ f1 m# f- k* G# K& Z( JCaused by: java.lang.NullPointerException* v5 @( c. m( c& p6 ]5 `: `& ~! v
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)5 p% o7 g6 f# D( S- |9 P
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
4 Q! t4 E+ O4 z& f- k, W _' W+ A at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
3 E. t! m& f. N$ q3 u( I7 q at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)
9 r4 M9 H* \ L' L5 o$ X at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439). ?% n' @8 U+ }: e/ l9 w2 ]0 }
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
( Y- D* L( h& b7 B: ^3 M( x at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)' Q7 _+ b9 d; ?% p$ n' b# i
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)$ D* G3 n1 d6 g8 [: }/ M7 I3 W. b
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)/ ~ x& t. i" M4 m
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
# D- T" ]* L0 l7 \) ` at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)3 r6 T7 G' Y! x4 F1 @" @- t9 p
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)/ H' j0 ^( K* P
at java.awt.event.InvocationEvent.dispatch(Unknown Source)3 z0 R7 p" d+ K" D# s* c( L
at java.awt.EventQueue.dispatchEvent(Unknown Source)$ C7 V' }5 j$ j3 X! R2 v
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)7 K7 y$ y" \' z0 e$ i0 J3 ?
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
; u6 g& q* ^; n at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
: P9 i/ H' Q0 o3 }- e( q at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
# k, N5 @- ~: V4 p! o4 Z at java.awt.EventDispatchThread.pumpEvents(Unknown Source)5 Q& K+ a, a6 q
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
