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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8 E' t! S1 L2 O! f7 @+ @% ^6 \7 Q
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# p7 Z0 B7 q2 C
9 P2 _( A! @9 A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2 e7 j, h8 X! C# f+ L `; G
0 ?9 }3 }6 L: H, [: p; }& v* k: W感谢感谢# U1 Y; n5 W8 k$ m) }+ O
错误如下：
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Exception in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException
$ b6 P+ q4 t' V4 h- e P1 U at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
$ `$ y5 u1 d0 Q) B4 Q at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
9 s) p7 U2 G$ W at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)$ \. C) i% n- |0 _. w& B) _
at saf.v3d.Canvas2D.update(Canvas2D.java:113)8 P4 G+ Z. W9 x7 d( o7 I
at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
0 w/ ?% e/ |* L0 y$ }- c at repast.simphony.render.RendererManager.setPause(RendererManager.java:57), E# U# |% l( T
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
# Z; {: f& w9 C at java.lang.Thread.run(Unknown Source)7 f9 c1 v' R1 m1 r
Caused by: java.lang.NullPointerException; W& m4 V0 l! H
at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130), X& [: o1 f# p8 B% ?5 U
at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
& D7 h7 n0 f4 E, ^8 O h at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)0 x- x- r! [5 M( p4 t
at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56): E/ h y3 C: @" W4 y H9 G
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
6 ]& ~, N" y4 M( {5 X at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58)' e2 W3 f. U7 C- C2 t
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273); j" k {' x# m/ J
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)! S) X3 K* v3 A6 K' X' n. b
at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)
$ V: p4 `+ v! ^' P at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
/ Y4 X8 D4 b- j4 z at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
$ c( O. @; C% D at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
$ d" H* K3 E& @$ ^0 e7 n at java.awt.event.InvocationEvent.dispatch(Unknown Source)
1 f, `' o* d7 Y) \9 t at java.awt.EventQueue.dispatchEvent(Unknown Source): G: k5 u4 j& v1 b$ Z1 J
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)' J- d5 ` ]0 R e4 z W
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
, m( C0 M8 D) G: C/ W at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)3 X7 i- {/ v. p- P; w R
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
3 t! D2 D, L0 k" ~( y at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
8 K! v4 T6 P7 Z: }& @3 E, j8 F at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
