设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 11056|回复: 0

[求助] 问jheatbugs-2001-03-28中某些代码

[复制链接]
发表于 2008-5-25 02:15:22 | 显示全部楼层 |阅读模式
5仿真币
HeatbugModelSwarm中buildActions部分,3个try分别是做什么?查了下refbook-java-2.2,解释太简略,还是不懂,高手指点,谢谢!代码如下:
  H0 X4 s5 K5 \; N8 z& b# e
  ?) U& d4 x" H1 h  P- n public Object buildActions () {$ b2 E0 F6 t1 w7 K0 c
    super.buildActions();* x4 d- Z3 l, h
      f, r5 h  O; r6 X5 \; n
    // Create the list of simulation actions. We put these in1 k! `5 S- A& N* v: z, e7 e0 h2 h% [+ F
    // an action group, because we want these actions to be# y9 s; d4 j7 _5 a
    // executed in a specific order, but these steps should/ O8 |, T) v1 r( h
    // take no (simulated) time. The M(foo) means "The message5 N' |, H# S# p  x
    // called <foo>". You can send a message To a particular+ z/ m! _* T5 c2 L6 K
    // object, or ForEach object in a collection.
: b- J( O1 m( O1 T3 c        8 h' {+ \& x# V* R, W
    // Note we update the heatspace in two phases: first run
7 D$ [# y+ {, }4 ~# P  m    // diffusion, then run "updateWorld" to actually enact the' U- a2 x, z6 @# X# @
    // changes the heatbugs have made. The ordering here is8 b) }0 h8 Q, B1 V1 }2 c* a( `
    // significant!& t& }6 V4 X3 S+ Z5 ^; L# x* I' F
        , V- Z0 R9 X- M$ F% o
    // Note also, that with the additional4 b7 Z" ^4 k7 u+ F+ J
    // `randomizeHeatbugUpdateOrder' Boolean flag we can' R3 ?0 q6 E6 ?+ N* `* X
    // randomize the order in which the bugs actually run
; B# h+ h& c2 h6 H: q+ I9 `    // their step rule.  This has the effect of removing any
3 Z% G2 y- t0 O7 {    // systematic bias in the iteration throught the heatbug
6 F2 d' T0 n; a5 Q. R    // list from timestep to timestep
* B7 Z' d: o, y) c$ F# t8 Q        
9 f+ z7 ]4 |6 S8 k1 O& f8 O1 A    // By default, all `createActionForEach' modelActions have6 E8 i6 H' H7 s" c( ~+ d
    // a default order of `Sequential', which means that the/ ^# G0 H/ Z( u* a
    // order of iteration through the `heatbugList' will be4 v) h% o) b% A( l# X
    // identical (assuming the list order is not changed
' I) w& {/ o# K( p" I    // indirectly by some other process).
! r. h) b( t" a( I" `0 @  u   
" R1 ]' Q7 o; i  V- P( t  F    modelActions = new ActionGroupImpl (getZone ());5 T( f5 w, o2 L5 \/ u) p$ D9 G
6 v) {* _* Q6 V/ m5 ]  r- w
    try {
' O/ i+ R9 r3 k! B5 F3 C      modelActions.createActionTo$message9 F* r; k* I3 K+ x
        (heat, new Selector (heat.getClass (), "stepRule", false));& U9 m' a$ b2 }1 }" q
    } catch (Exception e) {# p! [  R- V4 v/ E' j& `
      System.err.println ("Exception stepRule: " + e.getMessage ());
' O& j8 ^! g" z0 D4 e! v! t6 s    }
' C' l' \4 ~) Y! Y" S0 e* T" b, L# X% p% Q
    try {! p" O' E9 k, h/ H
      Heatbug proto = (Heatbug) heatbugList.get (0);
; A+ L6 m6 r  d' e- k  Y0 M; N1 D6 y      Selector sel =
" R3 S: j& N4 ?( L. J        new Selector (proto.getClass (), "heatbugStep", false);2 n5 u7 D- [) n+ p
      actionForEach =) L! J, E' ], U% D6 M
        modelActions.createFActionForEachHomogeneous$call% F1 n' J7 S# v. K
        (heatbugList,% ~5 e0 c' F9 ~. v, s
         new FCallImpl (this, proto, sel,
# V2 p" ?+ p1 q2 e                        new FArgumentsImpl (this, sel)));. o4 s7 H2 L6 Z6 c
    } catch (Exception e) {) M5 K- E" ^% u, o9 E) }
      e.printStackTrace (System.err);
9 V; N5 w* b8 |- I    }
) Y: b3 ?/ `% S) s1 F   
% k8 s3 @" F/ n    syncUpdateOrder ();' V  ~2 j2 H% k0 W% I, |: {

8 N& I/ r/ E8 M6 h7 ^  G% b- R& K) {    try {1 a$ I8 O- r5 u1 P3 ^, X) f/ g# Z
      modelActions.createActionTo$message
" o4 O) j  B  M1 R) a        (heat, new Selector (heat.getClass (), "updateLattice", false));& ?" W( Z3 J1 @0 v) Q- L0 o4 I
    } catch (Exception e) {
' q! C% ]! x* z; o3 }  y- K      System.err.println("Exception updateLattice: " + e.getMessage ());. q; h( G# b# }
    }
7 i. K' ]' C4 u) c8 B        
8 H: \2 w* H+ ]2 p$ K0 P0 R    // Then we create a schedule that executes the; G3 L+ ~" u+ p+ T
    // modelActions. modelActions is an ActionGroup, by itself it1 r( N' d0 b1 E1 [
    // has no notion of time. In order to have it executed in% ^( T) `. _& I+ {. m# i" ~" Y
    // time, we create a Schedule that says to use the. @! i1 a$ i4 v9 K8 j& q
    // modelActions ActionGroup at particular times.  This# }7 p; c; ?( j
    // schedule has a repeat interval of 1, it will loop every" w+ z( x( J2 i( \$ b
    // time step.  The action is executed at time 0 relative to3 l2 j1 B# }/ i
    // the beginning of the loop.1 r( w, N3 l' B) ^+ W6 D0 E6 `
/ D+ M0 D8 a8 B) X
    // This is a simple schedule, with only one action that is
9 |! r+ k% ^2 N; a  C    // just repeated every time. See jmousetrap for more
% [3 e8 \- m) t  t* j    // complicated schedules.( p, ^/ P, ]$ F( L6 C/ G* s! h
  
! F. s% L; A8 n/ A9 s    modelSchedule = new ScheduleImpl (getZone (), 1);
& z- }9 l1 Y* V7 y    modelSchedule.at$createAction (0, modelActions);* E' G) h/ c+ D' x* w
        + S8 m# m1 \* Z  t* t( x- B
    return this;
5 p( r2 {: C! V5 T5 d- w; ~* c  }
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-6-8 18:44 , Processed in 0.013159 second(s), 11 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表