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: 8634|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:
3 f, r; l9 m: B; y( H- x) F% y0 u2 e- }) X# C
public Object buildActions () {
. Q2 P4 |6 G  S  G* z' n" S    super.buildActions();, K1 ]& u& A+ j1 [6 o6 D) V$ ]" P
    + ^/ x2 h: }- e( `4 s  Z0 z. F8 A' f
    // Create the list of simulation actions. We put these in
+ I9 k8 P$ Z1 S    // an action group, because we want these actions to be& _) Q3 ~- _! h
    // executed in a specific order, but these steps should4 C2 A! B# g' H% @
    // take no (simulated) time. The M(foo) means "The message" z* O3 S( J0 E  E0 Q( u) [
    // called <foo>". You can send a message To a particular
2 l/ X* X0 A  ~6 C! R    // object, or ForEach object in a collection.
" L( a% J7 J+ s+ W        ( d" v) N/ a! H. @" k, o
    // Note we update the heatspace in two phases: first run
. I1 s: P5 {. S1 V; W    // diffusion, then run "updateWorld" to actually enact the) k8 ]* w' ], q( C1 m
    // changes the heatbugs have made. The ordering here is! D2 o* z! W+ A5 y3 z1 h, H& e
    // significant!
! W- R+ E" v5 @2 ~0 J+ |9 w; H. |9 V        ( E$ j9 x8 u0 i  h
    // Note also, that with the additional1 \# d8 p+ p& C0 s! o  `) O
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
6 O: K9 q: f0 b1 W9 |1 Z    // randomize the order in which the bugs actually run# C# J' b+ F  w
    // their step rule.  This has the effect of removing any
$ U3 ]" O' Z* M& m7 f    // systematic bias in the iteration throught the heatbug+ o- w, |+ k8 F( M) h5 Z
    // list from timestep to timestep
; ~4 }: N. a$ k- T+ L9 s        * p, \( j# i1 @' t) N2 j3 e7 K5 t
    // By default, all `createActionForEach' modelActions have9 Y: [, f! L' I0 T* }1 A4 Y
    // a default order of `Sequential', which means that the
. F1 ^' k4 ]0 Z9 E; @  b6 D6 Z7 b    // order of iteration through the `heatbugList' will be+ m4 `% ~% L9 _
    // identical (assuming the list order is not changed4 e! @1 G" ]& U
    // indirectly by some other process).  d$ Z. t$ R/ T8 }% Z
   
1 f) x+ C' [/ b' }+ t# G' `    modelActions = new ActionGroupImpl (getZone ());3 v5 U& z3 i, x: q8 |* U& r

  @) U0 w- O0 ]1 o9 V; H) o) _. }. ~    try {) u  [6 Y1 p: Q
      modelActions.createActionTo$message4 G+ R+ z) v2 n6 A) P6 G
        (heat, new Selector (heat.getClass (), "stepRule", false));4 E: ]+ Y( C8 b# r' {
    } catch (Exception e) {
" c+ u+ G9 s; U; o" N0 l% W      System.err.println ("Exception stepRule: " + e.getMessage ());
/ i3 H/ }% ^4 K9 t# Y$ N4 e    }; m: y! A( t$ X; u
: l/ ~. A/ T; M3 s
    try {& H  Z) J3 D* }3 b
      Heatbug proto = (Heatbug) heatbugList.get (0);
1 M9 F$ Y3 p1 z: |  t      Selector sel = ) }7 i% A0 F- l+ C
        new Selector (proto.getClass (), "heatbugStep", false);
5 g: [* V1 a  V( r( Q      actionForEach =9 ~3 O0 w7 f3 z7 x: f( @
        modelActions.createFActionForEachHomogeneous$call  P" O1 S; S) I, z7 @6 Z7 W
        (heatbugList,
4 }( K6 @. U6 O' U+ B         new FCallImpl (this, proto, sel,# x: q+ O( ^+ l5 Z% k0 H
                        new FArgumentsImpl (this, sel)));% x) y! C# }4 y# f# z4 W  G2 N
    } catch (Exception e) {
& Y/ j3 S: e& U5 N      e.printStackTrace (System.err);
: G+ Z" ]) E9 z( I    }( n9 r- \1 ?  y( v
   
: b, s2 c6 `: F( H3 l: I    syncUpdateOrder ();
' m- P- f4 |/ A5 i& r( Y( }4 ^4 E0 K) S6 I  g
    try {
) t  K0 R! u) U      modelActions.createActionTo$message $ V. r, p/ g, [
        (heat, new Selector (heat.getClass (), "updateLattice", false));
$ Z) Q1 E! Y3 a4 e1 E    } catch (Exception e) {1 G4 ^$ h5 T& y# G  g
      System.err.println("Exception updateLattice: " + e.getMessage ());: w3 d9 U+ [8 z: |8 z  ]* S3 I7 x6 r( F
    }
& Y0 z" b% O/ z8 p' l5 D        
( y6 H" b  n' N& [0 U9 I    // Then we create a schedule that executes the( t, Z- }6 b+ g
    // modelActions. modelActions is an ActionGroup, by itself it2 _1 d! x$ O! J# v
    // has no notion of time. In order to have it executed in0 |) [) r' s, e  Q
    // time, we create a Schedule that says to use the
2 c6 z$ H/ k- s% A. @7 u    // modelActions ActionGroup at particular times.  This# U/ f8 K; B4 F  Y/ b! H6 y
    // schedule has a repeat interval of 1, it will loop every
" w0 U" O  C$ T5 C    // time step.  The action is executed at time 0 relative to3 X) o% {% U4 i
    // the beginning of the loop.3 {# d/ @6 H3 P- _' |+ E
6 h: p& a& z* L; d
    // This is a simple schedule, with only one action that is
- C4 Z' a; H* j3 h    // just repeated every time. See jmousetrap for more
7 A3 }& c3 s# n5 V: i    // complicated schedules.
7 K0 g2 T3 U: F+ J" n  : E8 R" y" L& n, S( N
    modelSchedule = new ScheduleImpl (getZone (), 1);
" V$ Q, c$ L9 o/ ^    modelSchedule.at$createAction (0, modelActions);2 z/ i! |4 B+ P1 F9 a2 H: D$ z, [
        
; [% j* b# K5 C; b  v9 C( {  T. @  j    return this;" {/ n; B0 m4 J7 t: o: g* `
  }
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, 2026-1-19 11:54 , Processed in 0.015998 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表