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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
, y" }; p: ^0 h' p3 |; @) s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 |3 q7 ^- g% @0 X4 l
# Z5 D3 ?0 O$ N. J
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
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l% O$ T1 o T* n: _. k& Y' C4 l& j* {感谢感谢
z; }; X$ |; ]3 c! h0 L. @错误如下：
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4 B' a: s6 c$ \3 X. W! lException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
9 ]- V8 t1 ~3 u2 J* C at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
. Z( j, l( `* ]% n b at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)) d# D. @" u" k( b( s
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)' i1 G& ~% {+ k0 b' A
at saf.v3d.Canvas2D.update(Canvas2D.java:113)! X7 L1 I# c; W/ B' R
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
+ N0 C _* {" I+ } at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
2 N' G& I' B3 \4 f at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
]) Y3 ?" k5 m at java.lang.Thread.run(Unknown Source)
4 P5 I) J0 Y4 ]% J9 `Caused by: java.lang.NullPointerException
5 H+ K3 L0 f8 B/ l- b2 j% U at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)3 z1 N7 k7 j1 Q- Z0 h2 }4 P7 S9 Z
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
) w1 l, \5 z/ }! i3 M Z% P at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)9 G) f, J% T, I% T; e6 R7 u4 D2 U
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56). Z- N' R' |. K" a. H
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439), S8 o% A" q6 E4 f% J: C
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
2 Z" A/ \' Z% g+ p0 x at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
5 v4 {6 K$ d# P) _1 W1 p at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
* M' }) l( C" X! ~# H; a at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
4 s) Q' x! C+ j7 B5 y! n1 ^ at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)5 H/ Z+ F: Q' L h
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
, v6 c1 ~. M$ M8 n6 ~ at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)' A. B# _, x, S D2 J9 y
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
7 S+ v( W4 Y4 s% ` Q at java.awt.EventQueue.dispatchEvent(Unknown Source)2 n) Q; }* B2 ~! P7 ~
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
3 W/ f. R( q7 n% h4 ? at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)6 I0 l8 f3 I) P; B4 G+ Q- w! N
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)0 y7 a$ X8 {: X8 K- ]0 z$ t1 y
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)5 I+ n* f( |: |6 l
at java.awt.EventDispatchThread.pumpEvents(Unknown Source); i' K0 i! C: t
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
