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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" L6 e" s3 N2 L( w6 ~; h8 p6 z
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% s( ?! t5 d5 l+ P
: e; `" m8 Q6 T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4 E8 Y' ?! B' X, c
/ h! V: U) z3 k7 D) m# X; o; z. S感谢感谢5 e" I( Z: ^! G1 D: k7 x# }( o S
错误如下：/ q, g; J4 n, t- T: M- e K
& N$ M) r F6 jException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
% h$ J! T/ r4 F at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)/ p, i# P6 U: H4 A s" u/ F! d
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
6 ]4 q% @5 `7 _7 u at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
% a/ d# P) Z0 h! Z! u. N9 ~- z. T at saf.v3d.Canvas2D.update(Canvas2D.java:113)1 j, G8 t3 \, F- E8 @' w
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
}: d: e8 K6 }; y% M) Y! P at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)
0 ]4 u+ t8 }% Q$ p2 f at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)8 W4 a ^8 F' i/ J+ p, ^
at java.lang.Thread.run(Unknown Source)
1 f1 a. D$ B6 L) W. `Caused by: java.lang.NullPointerException+ m, N, Y; F+ [, [, g# D# k
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)0 Z8 L( s: {8 p6 N
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)3 I. L0 `$ @8 G5 X" Z7 j4 H
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)0 P! \* M7 q' |( i
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)- G# o, [/ F5 C: g& S. V. e
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
6 A' r& e/ ]$ o0 R* x! @! Y& k; ~3 G( U at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)/ S) N+ }. K0 q4 h7 S1 r
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273)
* j9 C9 P2 {9 P' ], i at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)0 N/ w9 a7 |2 p/ Q, X
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
: N R5 G0 c# @. O' E at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
6 E1 |/ U: ~2 {9 n- `; U- }9 F/ C at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)4 d5 D! z6 m( I" v1 o& n* j
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
( D/ O( C3 Q$ ~' z6 m at java.awt.event.InvocationEvent.dispatch(Unknown Source)3 w: Z4 j8 ~6 t- P% r( P0 M$ V
at java.awt.EventQueue.dispatchEvent(Unknown Source)
1 k9 L: s: p U at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
% a: s. m8 w# N0 ^9 |* P7 W9 y" X at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
! N9 Y* s; d4 D$ r at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)8 F( x( W$ t* j: b/ i; u: b2 t& b
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)" d7 F. T0 ?" z7 u% {
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)( I- F# A; c( l# s% {9 z
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
