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: 10406|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:+ {5 W: P3 O$ V" U

3 ~) L# }8 ]" J! O. g/ i  e public Object buildActions () {
4 V; v- Z! Z3 R$ v) |( D' e" \  v    super.buildActions();3 u2 E$ @9 |4 Q. \: d
    4 x1 D  A  J9 t
    // Create the list of simulation actions. We put these in
7 C0 S' u9 f1 ~1 L. `. y    // an action group, because we want these actions to be; G* {1 B. y: q# `6 S
    // executed in a specific order, but these steps should( @0 W" r( v( f  R; j- J
    // take no (simulated) time. The M(foo) means "The message$ ^! `/ p; P. x# [7 }) |! t/ X
    // called <foo>". You can send a message To a particular/ ^4 I" ^7 A$ j' p1 N) |, u
    // object, or ForEach object in a collection.8 n# q% [3 [) L5 u/ R/ G( D7 y  n
        ) Z# ~# q+ l2 q* ^2 Z- Q& E; ~- [
    // Note we update the heatspace in two phases: first run+ y7 F& i* s: O# J! T
    // diffusion, then run "updateWorld" to actually enact the, I/ ^  Q9 w8 C+ N6 t( Q1 U
    // changes the heatbugs have made. The ordering here is
( |: J( A5 b  H* \0 f' k% V, u    // significant!
5 s9 j& Q3 \' E$ V' j5 q' F        ' [' e$ \* L% m# L9 }
    // Note also, that with the additional
! Y+ P0 ~' g. N) i    // `randomizeHeatbugUpdateOrder' Boolean flag we can
) o8 I; \' S: `4 ]* c6 i7 J    // randomize the order in which the bugs actually run" x' A- c9 q. e: O: g6 b
    // their step rule.  This has the effect of removing any' e* F# L5 O6 Y, L
    // systematic bias in the iteration throught the heatbug1 v/ ^  d  K" k1 i$ i
    // list from timestep to timestep
; O  i/ D4 Z2 g* t! r: u/ ^" K        2 K5 P: f9 U, |3 [+ m& Y
    // By default, all `createActionForEach' modelActions have4 W  s" {& ]3 h" n4 L
    // a default order of `Sequential', which means that the
( }0 }$ R% x) G8 V( F8 Y    // order of iteration through the `heatbugList' will be
% e* l  h( R  [% d+ y7 @    // identical (assuming the list order is not changed
" R+ [  I0 |; F# F6 m% O    // indirectly by some other process).
% @& l0 Y3 u, d* c5 B   
+ J6 n1 j% O3 G, B! D    modelActions = new ActionGroupImpl (getZone ());
3 _+ ?) |% D0 j; X& Q# k5 E* d! _9 c9 R" j  c
    try {3 j" l2 i, L) y# P. i0 N
      modelActions.createActionTo$message
- ?# i& i+ c. r8 L% s        (heat, new Selector (heat.getClass (), "stepRule", false));' H0 a7 T/ ]: R1 J; l1 b
    } catch (Exception e) {
& O6 x% A0 N+ {+ m( b5 p; Y      System.err.println ("Exception stepRule: " + e.getMessage ());7 q# ~# M- {, p3 D& k
    }
' s! m4 q5 j: r5 I; t1 b% Z$ \2 G8 Z
    try {" @2 r1 `( l# X8 Y( N* g0 ~
      Heatbug proto = (Heatbug) heatbugList.get (0);/ m; E# f( K$ y# Z7 J
      Selector sel =
0 b6 h, x2 n1 Z5 @' B5 M3 o        new Selector (proto.getClass (), "heatbugStep", false);1 B7 Z* m) K4 i
      actionForEach =: Y/ ~; \9 B  @! n- `# ?
        modelActions.createFActionForEachHomogeneous$call, Q$ K1 a# @! G" X/ @7 H
        (heatbugList,
9 m5 \( ^- f1 g  W* s& y. g. v         new FCallImpl (this, proto, sel,/ t) C4 v& I# J. G0 S
                        new FArgumentsImpl (this, sel)));) [% a  l" b, H, @# b$ K0 c
    } catch (Exception e) {6 k- H$ n- a* Y4 p% D' T" M" ^
      e.printStackTrace (System.err);
( M  N4 c  m, `% ~4 b7 x& K    }
6 l& U7 q# x7 x   
0 Y1 k0 o. u2 |9 T3 G    syncUpdateOrder ();, x4 b& J: r- A2 V$ Y
  ^3 h: V* \7 ?
    try {0 W7 d  F6 S, I* K1 V/ n
      modelActions.createActionTo$message
9 n/ _. E" S2 g, e        (heat, new Selector (heat.getClass (), "updateLattice", false));
# q7 l0 _8 V5 G$ ^/ u- @0 Z    } catch (Exception e) {
. K* ~% J/ `1 u/ Q4 l+ [7 O% s& ^      System.err.println("Exception updateLattice: " + e.getMessage ());3 a# p( Y8 G7 j5 e
    }/ \/ m% u- e, H+ r# k! O
        ) ?9 Y0 [; v( d
    // Then we create a schedule that executes the/ i, t9 k; [0 c* b2 W$ s: W7 o
    // modelActions. modelActions is an ActionGroup, by itself it
# C- j8 _& |$ @/ u0 X1 P8 }, e# b    // has no notion of time. In order to have it executed in8 z" T  q8 W1 j% H) G% r8 u
    // time, we create a Schedule that says to use the
: ]" M' ~0 ^8 T$ |% d    // modelActions ActionGroup at particular times.  This" ^% I- w/ E2 p) p
    // schedule has a repeat interval of 1, it will loop every3 p- u; Q4 j2 W& i2 ~2 U0 y8 f
    // time step.  The action is executed at time 0 relative to
" l, m+ r, R: H  p: Z* I% p0 N    // the beginning of the loop.
# s* c! O. G+ I* f" E* u9 g4 z
# d9 I& U' |& K    // This is a simple schedule, with only one action that is. N: O7 v' F% v1 `* ?( V' ^( x" D8 k
    // just repeated every time. See jmousetrap for more  ^5 a* w+ u: n1 n) k' d' K4 t" H
    // complicated schedules.
; g9 Q! d. B4 ^, \  
5 w  i8 K  Q0 X2 ~    modelSchedule = new ScheduleImpl (getZone (), 1);
' O+ v+ w0 m. V8 [, ^    modelSchedule.at$createAction (0, modelActions);
$ F, ]. U9 Z1 C5 {7 ~        
1 i+ V2 e) _  P0 E$ x% G    return this;
* f6 {. v+ b$ k. [8 D  }
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, 2026-4-28 02:42 , Processed in 0.015324 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