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: 8316|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:
# G0 D' x, \- |: t& N' e; W' V# l2 _7 {7 l/ v+ z
public Object buildActions () {
0 {+ P) ?/ u) L* [4 U4 N+ Q) R# ^    super.buildActions();
. Z# o% C. d6 T* Y  l9 N, j1 b) L   
- U4 `7 M4 {, I) X5 v; T7 _! m    // Create the list of simulation actions. We put these in2 v8 A5 g' s) n' x  t6 e
    // an action group, because we want these actions to be
- [: C$ L) \' r' h# X2 l    // executed in a specific order, but these steps should
5 P" H' a" z; y" t8 P( r    // take no (simulated) time. The M(foo) means "The message7 v; O- i6 t6 \
    // called <foo>". You can send a message To a particular
6 m' V1 [( a8 F/ H    // object, or ForEach object in a collection.6 z5 b7 o! i- m# J9 v$ Y, z. h
        & f: M% F/ @$ v" F
    // Note we update the heatspace in two phases: first run- p1 }8 p# H' z' g& Z
    // diffusion, then run "updateWorld" to actually enact the
6 n! \: z* A$ p    // changes the heatbugs have made. The ordering here is
& X6 {6 Y* n" G2 s    // significant!) @* M+ X( h4 e& Y( e
        ; Y! n# `" i$ }' @0 G# o
    // Note also, that with the additional
- ?: T: |$ x2 e+ A  s) }! k    // `randomizeHeatbugUpdateOrder' Boolean flag we can
1 o, f/ ?' |7 ]! T& y& S7 W% U    // randomize the order in which the bugs actually run
9 X! ]9 s% |4 [* d7 S' }, v    // their step rule.  This has the effect of removing any/ Y/ }  W  t3 D
    // systematic bias in the iteration throught the heatbug  ~1 p6 Y& o& v) p
    // list from timestep to timestep
8 ?; H  T; A+ @) [: ]$ o; u        
/ O' }3 }, D' r* m    // By default, all `createActionForEach' modelActions have
( ^/ i1 X7 E+ V    // a default order of `Sequential', which means that the) W% }# U+ k4 t, W
    // order of iteration through the `heatbugList' will be; ?- ~' C# _" i: A
    // identical (assuming the list order is not changed& t" H9 W' V5 V  [" x
    // indirectly by some other process).
2 D  \/ [. ^! f% p# }# G   
$ R/ F* G: A/ r6 J" x- z) ]) y    modelActions = new ActionGroupImpl (getZone ());$ M8 _8 ?& v3 x* B' @9 L3 Y& q4 p
9 I* y9 U0 l. n* O9 V
    try {: |$ r7 @( R; N5 X4 V$ S
      modelActions.createActionTo$message
3 T8 |/ d6 }2 u8 s( r2 f* }7 R        (heat, new Selector (heat.getClass (), "stepRule", false));
: H6 |* l! O3 X5 H3 Q$ Z    } catch (Exception e) {
" O9 s, Y0 X1 W: Y$ \3 F% N      System.err.println ("Exception stepRule: " + e.getMessage ());  m, q# E/ p3 s# Z; `* [
    }
+ T% G4 k0 v: u2 E6 o, `
* i$ T" i4 v! u    try {
. D) ?5 g" K' J+ g4 P1 ]+ ^      Heatbug proto = (Heatbug) heatbugList.get (0);' l9 o% S6 r  p4 F
      Selector sel =
# U' g+ [( a8 ~5 c$ c0 J        new Selector (proto.getClass (), "heatbugStep", false);
9 n- T! _) \' B      actionForEach =
& {4 B( R* u2 R, G( b: Q9 D        modelActions.createFActionForEachHomogeneous$call
+ l8 [; |+ _# d+ L        (heatbugList,1 D; \1 ^6 {7 _9 B& ^' ?2 u+ r+ l- M
         new FCallImpl (this, proto, sel,; N# Y: {% ~1 Q. p& z* v0 l
                        new FArgumentsImpl (this, sel)));
; E9 {5 W# V8 k3 R0 r- Q    } catch (Exception e) {! \$ _3 q, z% M$ K0 O: b+ ^
      e.printStackTrace (System.err);. q* H2 k3 J+ l7 a$ q
    }% w# G* i4 |+ J) ]! q7 b
   
, {8 \4 R6 X* [4 ~  Z( X) S4 \- ?% O    syncUpdateOrder ();
& i) y* s  Y' s! b# K
6 o# r7 d8 U+ M9 W$ D9 i: W    try {: |  f3 V" E( P3 B2 F
      modelActions.createActionTo$message / N( `5 k2 M( M) Z, u
        (heat, new Selector (heat.getClass (), "updateLattice", false));
" n7 a+ \$ w7 ~& ^5 g2 ^! }+ w6 Y# |# ^    } catch (Exception e) {; ~+ Z+ z( o/ ~: @1 g4 C/ h- D4 Y
      System.err.println("Exception updateLattice: " + e.getMessage ());
) K4 T  V& o9 R& v0 D5 O    }
. I4 j8 v& a; ~) b        
. `. L8 U6 k* o- |    // Then we create a schedule that executes the
2 K: A# L6 f5 [7 w( J; a    // modelActions. modelActions is an ActionGroup, by itself it
1 ~' k- m$ C* b# f1 g: G8 r7 ~    // has no notion of time. In order to have it executed in
" k, |  k" V% _: I( m    // time, we create a Schedule that says to use the8 c: s" K# \2 @2 v' `  \8 p3 n) f
    // modelActions ActionGroup at particular times.  This( k* R1 m/ I! U: s" P" `$ J1 `
    // schedule has a repeat interval of 1, it will loop every9 w+ z" Y2 {! O9 ]) i
    // time step.  The action is executed at time 0 relative to1 b  m' u% O, g! P  U- l0 L
    // the beginning of the loop.
9 |( O) f5 f6 d' b" }* C
5 f) J0 _8 I1 e5 T/ }0 a" p    // This is a simple schedule, with only one action that is: K# n, c, L1 G  |3 w/ ^' f, C
    // just repeated every time. See jmousetrap for more
) c! v, `9 T" T    // complicated schedules.
; H) q" u1 T( [1 G$ A  - w# R( r4 t9 i  l: N# e
    modelSchedule = new ScheduleImpl (getZone (), 1);
: g+ X# ~$ x$ S7 v! R    modelSchedule.at$createAction (0, modelActions);, r& ], O2 h9 A* [9 i/ n1 `" L0 r
        5 I% B9 R% z3 Q1 @
    return this;
" V8 I4 E0 ^0 O* 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, 2025-12-20 23:55 , Processed in 0.013875 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