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: 10139|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 k: i) U: G, L7 C  u

* v# r; s' G% Q& C! {. t+ \ public Object buildActions () {2 G, d- r" ?* i: L" e+ F
    super.buildActions();
* W6 w/ S& S$ z+ |# @- E: v    . X7 S& k' {- H
    // Create the list of simulation actions. We put these in: d! j1 s, W+ {1 [# O9 @$ S' A* B
    // an action group, because we want these actions to be
* |& i3 T: J% V7 G' M1 h    // executed in a specific order, but these steps should3 D1 J! I  Z1 d" ]
    // take no (simulated) time. The M(foo) means "The message  r* @* w# ^, T- P3 J; g- g" l4 o0 k
    // called <foo>". You can send a message To a particular
( D; G7 c, {& q) D( n# t9 L    // object, or ForEach object in a collection.
( A& U9 O# R& o% r! P+ h+ d        
" G3 ~* F' o% Z7 R5 h    // Note we update the heatspace in two phases: first run. }5 I7 F8 {, d$ x  A5 W
    // diffusion, then run "updateWorld" to actually enact the7 D" i% ~  r. d8 y) S
    // changes the heatbugs have made. The ordering here is7 ^! }6 o% _8 U4 u+ b4 w( O- C$ q
    // significant!
8 V, F& f0 s% y& [2 X- c        
! h" b% x! P' t8 K' ?; r    // Note also, that with the additional# A6 P; o* G0 y
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
" I6 ^4 V3 u1 w; O& E$ z    // randomize the order in which the bugs actually run4 S( U% E. f* k: g
    // their step rule.  This has the effect of removing any
: u4 j) \+ R. P- i2 l2 t    // systematic bias in the iteration throught the heatbug/ t7 w- U1 z* ?" p( A4 c
    // list from timestep to timestep
: g9 ?0 |4 J/ \0 j$ |& g" d  B( p        
! r! w/ g& S7 \3 {* h; @    // By default, all `createActionForEach' modelActions have
7 P9 g9 P# i9 n- v6 x5 u+ R    // a default order of `Sequential', which means that the0 n7 [8 f* t$ V9 g/ ]" P
    // order of iteration through the `heatbugList' will be
$ D( B. L' \4 v6 {! Y4 x    // identical (assuming the list order is not changed
6 L0 P" t* n8 i& x    // indirectly by some other process).
+ N3 Q/ m% K4 y$ Y- h    1 ?# r; z& Q( u8 q9 I" u* z, g% I
    modelActions = new ActionGroupImpl (getZone ());
: Z+ {* Y4 G* d, N9 a+ X& h" j- _
    try {5 P3 Q9 d# z8 p! _- x- ~
      modelActions.createActionTo$message* Q# B% z5 y0 i: E1 L0 M
        (heat, new Selector (heat.getClass (), "stepRule", false));
7 [$ V' F. Q5 \+ _/ d$ W% V    } catch (Exception e) {
' r& E! C  Z. U      System.err.println ("Exception stepRule: " + e.getMessage ());9 H% c) J% c5 W, H( p% [
    }9 W  S+ K$ ?0 I6 W" M1 S- I0 Z8 Z

7 u% U: I' W( `. v    try {+ O8 X0 J1 S# p; V3 ]
      Heatbug proto = (Heatbug) heatbugList.get (0);
/ F* X; J. I/ n      Selector sel =
' M9 V- j* b3 X, C* X2 |+ z* [        new Selector (proto.getClass (), "heatbugStep", false);
4 g, Z) P: o6 V4 A% y      actionForEach =; N4 A( V  c: Q; q
        modelActions.createFActionForEachHomogeneous$call! `3 Y5 B8 E  m9 o+ V3 @) i- ^7 C; S3 v
        (heatbugList,( b; m" K, y0 e, A+ }
         new FCallImpl (this, proto, sel,7 b6 T& r7 V$ _& D
                        new FArgumentsImpl (this, sel)));
# }- D  E5 K  {( {# d- E* V8 v+ r    } catch (Exception e) {4 c# q/ c' v; R7 ]
      e.printStackTrace (System.err);
( E" r% m, }" u. I    }9 D: g" `5 |+ R( B9 {  w; ]
    6 F0 Z$ [3 z5 X3 }
    syncUpdateOrder ();
8 }- h6 r6 G0 ]. Q6 K
7 {; l+ @7 p7 V5 ~) w0 S8 T5 A    try {
7 J* @# G* ?3 b" _) k      modelActions.createActionTo$message
0 v6 J0 j0 L- I3 `3 z  @        (heat, new Selector (heat.getClass (), "updateLattice", false));& u7 _7 {% X! f
    } catch (Exception e) {
' n# o4 I, m' }# X/ K      System.err.println("Exception updateLattice: " + e.getMessage ());# ^1 K# x7 {0 ]5 l0 |' T
    }: @: m9 A; i: P' W3 s/ [
        . _$ @( A; _. `4 L2 o$ L4 q
    // Then we create a schedule that executes the
, z" X7 R/ ?# ?# V4 j( D3 {! G    // modelActions. modelActions is an ActionGroup, by itself it# Z" Y9 k6 P. N# Z2 {& T- x
    // has no notion of time. In order to have it executed in. {0 w7 M. A: T- |
    // time, we create a Schedule that says to use the
8 C/ P3 Q8 R1 [  s    // modelActions ActionGroup at particular times.  This
  B, T: y9 B% g3 P    // schedule has a repeat interval of 1, it will loop every
- D- K% ~. X) z2 C  d    // time step.  The action is executed at time 0 relative to
- r3 h& e; Z- T    // the beginning of the loop.
) R+ u1 U9 C% L" B% W* {1 B
0 k: C, m$ A; ~! m' [0 o    // This is a simple schedule, with only one action that is& V7 e5 m* L0 V  @5 M' E
    // just repeated every time. See jmousetrap for more4 L* t6 A/ |9 _) N* a% V9 q/ V
    // complicated schedules.  g  |, M7 V6 }& l6 \( V% }
  & I" ]9 ?3 Y( B! ~" `
    modelSchedule = new ScheduleImpl (getZone (), 1);
( P+ m6 o& C) a    modelSchedule.at$createAction (0, modelActions);
$ s* N- C7 L+ R' F9 H        
6 D2 o+ J8 |. N3 S' }) f9 ^: r; @    return this;; a& C! e9 {5 e8 _, w4 x' ?/ u
  }
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, 2026-4-16 05:44 , Processed in 0.013912 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