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: 11593|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:8 d# w- u5 r0 l0 i8 ~7 \

! M4 q2 Y+ h% K( s: { public Object buildActions () {
# W$ o1 k: f- \1 T' m# Q    super.buildActions();
9 T5 G) ]7 M/ ^    7 Y) U2 W8 R! c( i4 r, ]0 Q
    // Create the list of simulation actions. We put these in
' B" V9 ^& t% N; a# A    // an action group, because we want these actions to be
0 r$ |' _- b+ _  m2 |2 n    // executed in a specific order, but these steps should
% ^( c. M0 J( j    // take no (simulated) time. The M(foo) means "The message
  y) \2 K+ \4 f2 r; L    // called <foo>". You can send a message To a particular
. x( l; ^! \' r    // object, or ForEach object in a collection.
( M9 Y  L* p2 p. k6 e        
" _$ ]6 v9 Z1 S7 X7 v! }    // Note we update the heatspace in two phases: first run) t$ j3 }+ C+ Z  s
    // diffusion, then run "updateWorld" to actually enact the
' p+ Y2 ]; X; _- ]  V5 d    // changes the heatbugs have made. The ordering here is' ]8 s7 Q" E/ ?" R
    // significant!
& l, a5 l+ b" ?5 K. ]5 U        0 e" Z3 b% d" r. L( @  q. A
    // Note also, that with the additional2 X4 [) W7 L2 `3 L" \
    // `randomizeHeatbugUpdateOrder' Boolean flag we can' t: Z6 |) ]8 Y: S% _: [/ N
    // randomize the order in which the bugs actually run
+ B8 _, b- T" |    // their step rule.  This has the effect of removing any
$ v* l; `' h- h, W4 k8 Y; Y    // systematic bias in the iteration throught the heatbug
$ Z4 K6 U( r( {3 k) K- S    // list from timestep to timestep4 j9 _, C  b: ?$ M7 ^: ]
        
; p' E( V4 `! v    // By default, all `createActionForEach' modelActions have
8 s3 I) t. |) |: Q- |, p6 R    // a default order of `Sequential', which means that the( [8 A; @  y, M, w, u
    // order of iteration through the `heatbugList' will be
" ~8 a) V, p9 u6 H4 A    // identical (assuming the list order is not changed+ Q" \. [. P" p( I; \* Y
    // indirectly by some other process)., Y' g9 E* x3 e# s- v) `
   
, x" J# z. E; D- d3 u, d    modelActions = new ActionGroupImpl (getZone ());3 W4 _6 l5 V2 N; O
  R4 J- d* ]. ]* r3 s
    try {6 _0 o; m; }  a' p
      modelActions.createActionTo$message
/ q: C- w& d8 k: t  V        (heat, new Selector (heat.getClass (), "stepRule", false));
  v4 G1 g: U3 A, c    } catch (Exception e) {
. x/ N& h% x; m- w1 x3 a8 n4 E      System.err.println ("Exception stepRule: " + e.getMessage ());
7 C, s! ~! C+ C; z    }
* X0 @6 B  T- z/ U1 j( `8 r9 h& \$ E8 }: G) p
    try {
& V$ e4 `! m/ c- x* i+ L      Heatbug proto = (Heatbug) heatbugList.get (0);
1 _+ P# B3 A% z3 C& P      Selector sel =
: c! r5 E  f: @  [& a        new Selector (proto.getClass (), "heatbugStep", false);
2 w- Q& x! s5 j8 I      actionForEach =5 V; b8 ?; U* p& `* _, S
        modelActions.createFActionForEachHomogeneous$call7 ~+ |# ~, \4 R
        (heatbugList,! `3 |- E7 W! L* u  _  x0 l
         new FCallImpl (this, proto, sel,
8 G3 Y; t' @" I. g4 X5 E                        new FArgumentsImpl (this, sel)));5 t6 T# o/ V* ~6 f2 O! \1 I' J
    } catch (Exception e) {
$ b  P% A+ J. d, `* M      e.printStackTrace (System.err);
! ^- I, I! ^% O    }! s' h$ U% C0 o% p4 w' O) Y
   
: r2 B# d6 r5 a8 x! o- @8 G    syncUpdateOrder ();
3 o. w3 J% y5 b) |; {; Z6 Y7 ^7 T; ^
    try {
9 D, w* c( f1 u: J% q' D      modelActions.createActionTo$message ; u# V- r& u' n3 Q! e. E
        (heat, new Selector (heat.getClass (), "updateLattice", false));
# ]. b/ P1 E& U    } catch (Exception e) {
5 E/ Q5 n. D% G% @% }$ a2 W      System.err.println("Exception updateLattice: " + e.getMessage ());- A8 A# a$ }/ `
    }
; g" n% C1 p- r) G5 i3 G3 M        
7 ?# y* S* `# o5 g* |6 M0 ~) ]    // Then we create a schedule that executes the$ N( R5 v% @6 h
    // modelActions. modelActions is an ActionGroup, by itself it, H$ l( `! e# L+ N( u+ g) F* [- k& l0 G
    // has no notion of time. In order to have it executed in; O0 l7 }; w. _; O0 @: a8 [9 f3 t
    // time, we create a Schedule that says to use the
/ d5 t7 V' q5 r: R    // modelActions ActionGroup at particular times.  This% Y7 n' E8 r8 c* \9 [. S
    // schedule has a repeat interval of 1, it will loop every
7 s. S" B  b* G' |4 v+ V8 g. x6 v    // time step.  The action is executed at time 0 relative to
4 N9 X/ x1 \2 ~2 Z  {* p; E    // the beginning of the loop.
& y1 n' Z; J- L6 [2 S
% E" C4 m8 l" `' K  N5 _    // This is a simple schedule, with only one action that is
7 m4 u; b" J. L8 c; J    // just repeated every time. See jmousetrap for more! z- \/ Q, B4 t6 \( p/ C. U
    // complicated schedules.
9 n; s* Q) a5 t$ x  
' e, n- V/ `% [( v  }    modelSchedule = new ScheduleImpl (getZone (), 1);& ?* P8 z8 l, U, I% l2 R
    modelSchedule.at$createAction (0, modelActions);
7 x) M9 ?9 D% m1 _: |% U: F        
3 @$ @2 H& `: u) S0 i" _0 s    return this;5 ?0 m: }5 `3 }
  }
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, 2026-7-13 22:51 , Processed in 0.013331 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