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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# P1 {0 ]# F, {2 Y2 U3 S6 Y( n
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
, O; h# q- d) \$ e9 _2 [1 r2 Q- F) q" m* S# @+ O* D
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" @' v0 n7 }* o8 _. O
9 z% O1 B+ L3 U a$ v2 r感谢感谢5 i$ `" Q) R4 E3 Q9 I7 E! ^! [
错误如下：
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r* p5 p% q8 ~: t; _9 ]4 s% gException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException1 {2 {' g$ I- t' [1 L7 [8 N/ Y2 k* s7 `
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)$ N2 g8 ~- H/ ?, ?2 U
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)( v& V& }5 k2 q) O6 I; |, u
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
Q- C6 @0 I% p# n at saf.v3d.Canvas2D.update(Canvas2D.java:113)
/ Z* W+ Q6 h; l8 ~3 i3 | at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
: [$ Z0 w; f" K: O2 v at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
- c# F( |6 G/ J) D at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
1 Y2 a; J5 }9 v) `; g2 o at java.lang.Thread.run(Unknown Source): ~8 E6 y3 Z# |
Caused by: java.lang.NullPointerException
$ v* h, n9 O# L2 f- @1 R0 C at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
' i* c7 s( X. z. H0 L at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)0 k o# ]* H. c
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)$ A4 b9 b1 m" P% z2 I
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)) v5 p' s0 n# r, s% c
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
! i6 T. y! o3 B; X at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)
, ]4 G ]. p& M. H at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)# u/ d W- U, H2 \, I' N9 D
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)0 K/ ^, q4 c1 _: u$ g
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)! n0 _& o; f2 S" d
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
& G8 f' k5 a) h3 f1 Y; j L3 E4 d at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
3 D2 o/ {$ Z. z; x. `1 l at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
' J1 X+ j) g8 r4 e( `; b) f at java.awt.event.InvocationEvent.dispatch(Unknown Source)
7 B# x9 f% r" p5 Q+ P+ X at java.awt.EventQueue.dispatchEvent(Unknown Source)
5 ~5 v8 r" b3 z; D. n; G4 |8 w at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
* _5 R' v0 t; X1 K4 e5 Q3 F at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
8 l2 h& W s' {: `4 R4 `0 } at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)# l' w: V& B) {6 i; F5 Z
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)3 c2 I" K3 q% f1 T+ T. m
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
. Y: h. U- [( W' d3 }% ] at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
