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: 8753|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:9 w1 }# G8 E0 U+ l

1 i6 i( a$ q$ o/ _$ E public Object buildActions () {+ r* C% p  p7 g; V- ], W1 [. d
    super.buildActions();. c- z& Q" F8 s5 t
   
& x1 C; [- ~. ~% X    // Create the list of simulation actions. We put these in. e) U# L2 L" Y. T+ A
    // an action group, because we want these actions to be
4 \6 F* M* M" g7 u    // executed in a specific order, but these steps should* {7 `, y7 n. O: S# D9 F5 h# V
    // take no (simulated) time. The M(foo) means "The message- T) O) l: Z0 O& Y
    // called <foo>". You can send a message To a particular
3 Q8 G4 ?, K3 y6 f7 U# L    // object, or ForEach object in a collection.. l1 D* s8 w- ^: f5 F. c
        
  D) r: ^8 ~9 A+ t- K    // Note we update the heatspace in two phases: first run
6 W; {) M7 W# M7 F1 m/ q    // diffusion, then run "updateWorld" to actually enact the
; ?" H8 Z! ?1 q  a    // changes the heatbugs have made. The ordering here is
9 Q# `/ Y2 ], [7 c; u2 J; N    // significant!
, f$ C; E, R5 Y/ ~) Q        
% C& x7 N$ ?3 S. ^# A* i# j    // Note also, that with the additional0 `) H7 z5 x$ o2 J- h
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
( f4 w" `/ c8 h9 e4 x; f  A    // randomize the order in which the bugs actually run
" U& X* p! V6 D+ K; `0 R* b1 T    // their step rule.  This has the effect of removing any
% v2 ^% g( F9 C& _, X+ z    // systematic bias in the iteration throught the heatbug4 D% V& z6 R( T- ^. j
    // list from timestep to timestep
8 f# ^9 W6 ]  B" j$ P8 I- X. U        - D9 J: o' _' X! A" l
    // By default, all `createActionForEach' modelActions have% u6 n; D( i% e. P7 t
    // a default order of `Sequential', which means that the$ t% p( w( K4 [: l+ E% X0 E2 C
    // order of iteration through the `heatbugList' will be" x: z+ \7 R& i' C4 Q" s
    // identical (assuming the list order is not changed
% S( ?+ m$ e! g& N; R- u    // indirectly by some other process).
0 o; o6 v; T7 f! _+ P    # F$ U) t" ^& M# a0 e7 e5 e+ x
    modelActions = new ActionGroupImpl (getZone ());
0 [3 c" P8 T! ^, G3 ?1 S
! @% G' L6 `. W    try {
* z% Q# D1 y* d% S      modelActions.createActionTo$message+ T6 [% y  B$ R& F' e/ W4 J
        (heat, new Selector (heat.getClass (), "stepRule", false));
* E/ z2 r/ d3 _6 p  H* I4 `    } catch (Exception e) {, M  v+ o0 [2 y/ p1 B
      System.err.println ("Exception stepRule: " + e.getMessage ());  l8 U. o$ H9 N7 Z& o: d0 ~
    }
  D6 k8 Y! F/ h8 Z# l4 R" r  w$ g% X8 J( l8 a1 |
    try {
9 Y& w& j& [$ D- ]5 M- _" g2 w      Heatbug proto = (Heatbug) heatbugList.get (0);# H; y+ Z$ q$ G7 C: E4 ?
      Selector sel =
3 s4 B, ]  L+ h7 }" _1 x4 S        new Selector (proto.getClass (), "heatbugStep", false);, H; w2 J6 v1 c# B1 U
      actionForEach =
4 r6 B# I8 ?7 J1 Q% A        modelActions.createFActionForEachHomogeneous$call
- U; U. P) o! `% l% Z4 L0 N        (heatbugList,
1 M6 J! v7 W: v4 I: p  g! z         new FCallImpl (this, proto, sel,
; ^9 O* M3 E8 `  e                        new FArgumentsImpl (this, sel)));  k: o5 m  w* h" q. O) F7 {2 G7 V( q
    } catch (Exception e) {0 u: G9 i2 |! e9 e5 Y
      e.printStackTrace (System.err);
# e4 O4 H, C5 J1 c* M    }
: J" p8 |: C) Y   
  I. Q2 C8 ^( X    syncUpdateOrder ();+ W6 G: U) I* Y
4 U  K' n1 e& f1 z: W
    try {1 C4 w) f! h; R, O9 v! x% T
      modelActions.createActionTo$message
& G) g2 m+ E& G+ O7 i$ Y9 C! Q8 {0 i        (heat, new Selector (heat.getClass (), "updateLattice", false));
1 y- I3 n) S* f" P/ l* X    } catch (Exception e) {: K* O" g$ Q, J
      System.err.println("Exception updateLattice: " + e.getMessage ());
  X! E+ `+ L  m8 N    }, o' ~" I/ K( Q/ U
        
: O/ [; _8 |2 U% E* i- p    // Then we create a schedule that executes the# ]) H0 P& u4 b3 d8 }
    // modelActions. modelActions is an ActionGroup, by itself it6 F% A1 b2 C( P& x: y
    // has no notion of time. In order to have it executed in
" A- r$ S5 t% m: {! O* Q5 |    // time, we create a Schedule that says to use the
! Q) S/ y0 q0 M: C' A$ C7 d    // modelActions ActionGroup at particular times.  This
# Z: K  |! i9 m    // schedule has a repeat interval of 1, it will loop every+ _9 M5 @0 k; C+ z5 V7 J
    // time step.  The action is executed at time 0 relative to1 q1 v' s- {5 N
    // the beginning of the loop.
* S* Z1 @' k: }, h+ g6 l1 D% M
3 }( n! |0 J  y0 I    // This is a simple schedule, with only one action that is
7 j! y% o; E6 c3 H( S, {    // just repeated every time. See jmousetrap for more
1 I- s; T: R4 [4 B    // complicated schedules.
/ h- X$ A0 ^0 d6 f$ Y  
9 W- [* W8 ~7 m, L    modelSchedule = new ScheduleImpl (getZone (), 1);
  b- C& O* J" h6 }5 i" W4 s    modelSchedule.at$createAction (0, modelActions);% H: m+ ]2 M/ u' U# K" J
        6 S$ F% g0 y5 j& {( E# G8 I
    return this;
8 `# @4 S) N$ Z5 z0 h, ~+ I; \  }
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, 2026-1-25 12:13 , Processed in 0.013285 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