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: 12346|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:, W( }! D  R$ T7 M9 m

% ]. q: O- \, W. X1 _ public Object buildActions () {2 [* Y( I6 P: u0 E1 n0 V+ j
    super.buildActions();
. ]3 K3 V2 K& Y) J   
1 w0 Y2 j- k- z+ j    // Create the list of simulation actions. We put these in3 n6 x7 }3 q* J
    // an action group, because we want these actions to be
2 S7 G; K$ G0 N+ Q2 v* N5 [    // executed in a specific order, but these steps should
: F' x! m, q1 j: X; J/ d4 q    // take no (simulated) time. The M(foo) means "The message
) x9 R4 c* |% _    // called <foo>". You can send a message To a particular# n5 p) H# n3 H" P1 d3 G; f
    // object, or ForEach object in a collection.8 c6 F2 X- ]% u0 V+ {# W% {' g
        
" S6 v$ }- _& k/ B0 }    // Note we update the heatspace in two phases: first run
9 x7 o9 T% T3 h2 v    // diffusion, then run "updateWorld" to actually enact the, d' k- N3 `$ @! g3 a: u1 n" [
    // changes the heatbugs have made. The ordering here is
7 e7 p! p( x+ N6 T, e  j+ Q    // significant!
+ ]' j3 a& n% E$ K8 x, ]* `$ [        
3 R+ u4 W0 d2 U+ i! o    // Note also, that with the additional) y9 t: A. t. ]
    // `randomizeHeatbugUpdateOrder' Boolean flag we can8 _) ^' Y. \: [
    // randomize the order in which the bugs actually run  [6 I6 D! [  E
    // their step rule.  This has the effect of removing any
( q" d# E) ]% S    // systematic bias in the iteration throught the heatbug
$ G+ q# l+ y- W5 Z    // list from timestep to timestep* X0 m4 N* T7 V$ x0 F8 d& p
        
1 r, s" k/ s9 u    // By default, all `createActionForEach' modelActions have% h& q6 J) O. E, m
    // a default order of `Sequential', which means that the: s: q6 _: J% L& A' x7 D( @7 X% i
    // order of iteration through the `heatbugList' will be0 }9 x8 R& J1 y
    // identical (assuming the list order is not changed
% ^" q( a3 b  r& q    // indirectly by some other process).% _5 o- O6 v4 F5 W; T  v+ u8 n
    " u, S: C0 o4 G0 D' ^2 _
    modelActions = new ActionGroupImpl (getZone ());
% _$ o5 D! V7 H5 V6 D' y
8 |4 `+ {( W* Q% B/ X    try {: A+ M! ?" `: F( ?
      modelActions.createActionTo$message  o9 y; q% H  K7 V: D) ]1 W
        (heat, new Selector (heat.getClass (), "stepRule", false));0 j/ G5 ^- p7 |( l. a$ a1 W- m: i
    } catch (Exception e) {
. A2 w+ {# g0 W; }3 G      System.err.println ("Exception stepRule: " + e.getMessage ());: E8 G  J5 ]8 B! Q
    }
* o# W5 f' o& d' L* V0 ~- L
" L! U7 u* s5 P0 g    try {
4 K; t" T/ W+ h2 r$ W2 p      Heatbug proto = (Heatbug) heatbugList.get (0);/ H+ u( S( b- q
      Selector sel =
& W: k7 L& ]' b7 w% m* {0 ]        new Selector (proto.getClass (), "heatbugStep", false);( ]& m8 x9 c+ x
      actionForEach =& X  i% H. w8 }: H' X4 v$ O" ~
        modelActions.createFActionForEachHomogeneous$call
. d* C6 Q( t+ }! W        (heatbugList,; n: p* |/ i. T0 h, |
         new FCallImpl (this, proto, sel,; s' s. G* ~9 \4 x# ]3 @; N
                        new FArgumentsImpl (this, sel)));
6 d$ M& a6 T# B4 p: b- Q3 f    } catch (Exception e) {
" x% a: z2 C. I% B" ?$ {& @  g& N9 g      e.printStackTrace (System.err);
2 E1 M4 _; s, Z$ E    }
6 D; ~, M* u3 m    / |  o1 I1 W  g4 j+ p
    syncUpdateOrder ();
* z. j8 d% [6 U, a8 L0 s% B5 D
# [3 S0 \7 z2 n% B! P7 O& n4 k    try {
5 ?( G2 ^3 w. `& Z5 A# \0 a      modelActions.createActionTo$message
( k* G8 V7 B' z$ O+ ]7 t        (heat, new Selector (heat.getClass (), "updateLattice", false));- h4 j+ u* W- ]
    } catch (Exception e) {
0 E# D7 W8 x; @; e      System.err.println("Exception updateLattice: " + e.getMessage ());" X8 |! T' @2 ?' L2 W% n! N5 q6 u* c; D  e! o
    }
; M" k" O# n1 _7 f2 K3 y        
$ y) t+ \* w# A8 w/ A    // Then we create a schedule that executes the- Q* q6 X  s+ j
    // modelActions. modelActions is an ActionGroup, by itself it% ^$ u  W, M% L3 c& g
    // has no notion of time. In order to have it executed in
9 J' n$ g" C  \1 c, H" H. z. b  E    // time, we create a Schedule that says to use the
+ N( s) N: [% m2 |& S! |! Q    // modelActions ActionGroup at particular times.  This8 G* y) N" k8 X, h- E/ @1 r' o- j! w3 n
    // schedule has a repeat interval of 1, it will loop every* c/ \+ y7 a# g0 s9 [! |
    // time step.  The action is executed at time 0 relative to4 {. h  p( W. W( r+ M0 B; D
    // the beginning of the loop./ q. \6 u4 F! ]- ?' @

% y) n1 R* ]: ?- z* I5 K    // This is a simple schedule, with only one action that is
4 f: ~" H" Z- n/ q% N6 u- R    // just repeated every time. See jmousetrap for more
* u. d4 x5 D: D) C+ b* r    // complicated schedules.
/ ~* Y1 g0 ?' Z+ G; q- g  
+ t0 R' ^$ x4 T% X' K! x) l    modelSchedule = new ScheduleImpl (getZone (), 1);
, d3 y: ]) C* S; T. s$ @    modelSchedule.at$createAction (0, modelActions);& j* b0 G) |6 i, C' D0 s% i
        2 b; r3 d% L- |) h9 F
    return this;* S5 z1 p& A& d& N; 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, 2026-8-24 09:45 , Processed in 0.016101 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