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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- c$ {2 K) D# |" V" d
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
; J1 `2 q/ d/ U3 h. v3 S6 j
# V5 m& |1 K4 p/ Y# b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* [* \/ R: T# L3 B: y- U" T
% Y8 G8 {& f) u( S感谢感谢
2 d, J$ s; R9 \8 _0 f/ @% `错误如下：! X `7 c. W, e3 r7 S
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
+ ~8 b T8 _( I/ e3 \ at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
: `- ^- J3 k* H" R! b/ O: E at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)4 w' o2 Z, ^ @9 r: l
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
: k4 ~( b: {7 g- a, } at saf.v3d.Canvas2D.update(Canvas2D.java:113) x; L5 s/ d4 u5 _2 a1 R1 m( P
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)3 ?: G: G8 r# Q4 z# J2 G$ N/ f$ F
at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)7 b. j) D5 e. j5 ~
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)% e0 s3 G1 [& C, I$ v
at java.lang.Thread.run(Unknown Source)+ J( R9 K& o1 c, T" m* r
Caused by: java.lang.NullPointerException
: U+ Z9 k' z$ P7 G& Q) @3 P at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)8 i+ R @* P- _
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
2 R# o- s$ d" o! h at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88), d4 g! h2 w8 F% Y$ Z4 B
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)* b/ B( o8 N& ?) H$ H
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)( C7 }5 Y3 j3 v9 X' T
at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
$ W1 ?* ]5 T ~ m at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)6 y: M3 Q, U( g7 H
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
: T9 I+ F- X- H+ D# U9 v6 x1 Z at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)& d% W1 q' N* V. X- w5 r. {
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
3 X3 S9 g3 v8 P8 N2 d. @ at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
4 ?3 g1 e& u+ t V, O7 u2 q! c- P# f' i+ L at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452): Q7 E* T9 o3 `
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
7 j. G0 l! r5 A; s5 M3 R B9 _0 U at java.awt.EventQueue.dispatchEvent(Unknown Source)( F! p. v5 _' \
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
" t" e4 Y# [; _ at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) I0 J& J% v. h, p* X
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
1 f: J) K+ C+ O( ^6 A/ j6 ? at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
% E; J- {) A. l$ E at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
1 i& z/ V% K( M3 Z7 R at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
