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: 10346|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:+ R" ~" ?0 R9 ~  W3 V

% I4 }; u. q4 p+ a3 T4 u public Object buildActions () {- }  T8 J! l& a8 W$ a
    super.buildActions();
! m/ U8 D9 k; m, n/ m$ w   
0 e/ ?6 i9 W# H1 H0 \    // Create the list of simulation actions. We put these in* l7 G/ p' J1 Z* z* {
    // an action group, because we want these actions to be
* P6 v9 h& C* [    // executed in a specific order, but these steps should* J8 w* O$ W$ h6 I( h
    // take no (simulated) time. The M(foo) means "The message
" i  h: }# Y9 Y& a4 O8 x7 X    // called <foo>". You can send a message To a particular2 e; Z) _$ k) I0 C
    // object, or ForEach object in a collection.
/ T; a4 z$ s% Z# `        
$ b! S: m0 J% @$ c. O0 I    // Note we update the heatspace in two phases: first run
) U& H7 u( k- H4 U# H    // diffusion, then run "updateWorld" to actually enact the+ k, A4 n+ u+ V9 T6 P( z
    // changes the heatbugs have made. The ordering here is' A& B) K2 c3 j# P3 v& e
    // significant!6 J3 ]) v5 C- B- v% e$ Z
        
& }6 a: S/ W) l2 {" e    // Note also, that with the additional) B. ]* q" S  h: k/ @. _/ i# n
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
$ S- x5 o5 t( v: x    // randomize the order in which the bugs actually run
; ]+ F/ l2 \/ N4 O3 j4 `    // their step rule.  This has the effect of removing any+ W6 e) ~8 b% X9 B+ u
    // systematic bias in the iteration throught the heatbug
  J* W8 C$ X5 R4 E5 L    // list from timestep to timestep( k1 r5 b3 C7 V5 s- Q' \
        
# m9 a$ h: m  D    // By default, all `createActionForEach' modelActions have# N$ e& w( t/ M  I
    // a default order of `Sequential', which means that the
/ J3 \; l% d, B+ y( o% D7 @    // order of iteration through the `heatbugList' will be0 a+ [* v. b+ l5 [. Q: [( f
    // identical (assuming the list order is not changed
2 H, R1 [2 P4 z2 }    // indirectly by some other process).( e& f* A: g4 z9 v
    3 W; ^4 S; L" X) C3 @6 j  @7 M
    modelActions = new ActionGroupImpl (getZone ());
+ N: }& l1 [' P% c+ N  n- ?; u1 ?+ o: o/ f7 d1 F9 ]
    try {; P  P; H6 }! ~; V) @) J
      modelActions.createActionTo$message
8 }/ M/ T* K0 r! u; R  a, j        (heat, new Selector (heat.getClass (), "stepRule", false));
" F, O, b/ n6 `  O4 q    } catch (Exception e) {
3 ?+ I3 o# U5 q# y$ s      System.err.println ("Exception stepRule: " + e.getMessage ());
' D5 ^4 v# N) v: A2 _5 k    }
3 ~% w7 {4 O7 y8 n( y) i) j& }5 [! M6 q+ o- e
    try {
$ ^+ w. F6 W- D      Heatbug proto = (Heatbug) heatbugList.get (0);
& }. ?( m* f# v0 o6 v6 a3 ~3 A& X- [  o      Selector sel =
( i8 T" l7 `' Q( @- [6 b        new Selector (proto.getClass (), "heatbugStep", false);
  s$ o# A* a  W- {+ S* C      actionForEach =
+ ?1 ?! Q( Y1 h# w! a. I        modelActions.createFActionForEachHomogeneous$call
% _! ^2 }' [/ H! V% B: I. S        (heatbugList,
8 u, Y8 \& S3 Z1 d+ U* ~) f         new FCallImpl (this, proto, sel,2 c6 D; ?+ W5 R6 r9 W
                        new FArgumentsImpl (this, sel)));
8 r! I; G3 \: M6 R7 [& T    } catch (Exception e) {# a4 c* G/ I# k
      e.printStackTrace (System.err);
7 _* f& }( b! p6 F    }& N$ ~6 z) u( ~, @& n
   
: @+ \0 e6 f  M- g    syncUpdateOrder ();
; \( ]+ B2 A3 _0 w2 X+ v; E7 B* C+ s) S# B, b
    try {
, n3 P# u* Y+ U% H      modelActions.createActionTo$message * I- Q  x/ R4 `
        (heat, new Selector (heat.getClass (), "updateLattice", false));
9 \5 b1 W7 E( t: ]: }7 \5 L    } catch (Exception e) {# ~- l5 q" }4 D: I' ?
      System.err.println("Exception updateLattice: " + e.getMessage ());' m5 x2 V( |5 V7 e
    }
8 B. l2 C# ?4 A# i3 L        
7 v# G8 c2 Q; r3 E" H* U  W    // Then we create a schedule that executes the
7 {. D! u1 j3 a$ a# X4 i    // modelActions. modelActions is an ActionGroup, by itself it
  N1 v8 O% `( L4 J0 E    // has no notion of time. In order to have it executed in
; `1 f, d6 y* O/ `# \& B    // time, we create a Schedule that says to use the
' T# g; N: m7 n$ ]; }. P/ O  p    // modelActions ActionGroup at particular times.  This
+ O& Z+ p6 c$ |    // schedule has a repeat interval of 1, it will loop every% \0 I+ a: O9 @; w; m4 D, z( E4 e' j2 _
    // time step.  The action is executed at time 0 relative to6 F5 e2 A! w% ]5 y) N6 y
    // the beginning of the loop.
5 L  c/ o7 F, t* w# \; c: R$ h+ u' k4 S; `
    // This is a simple schedule, with only one action that is
1 U1 V5 G# o# n- r    // just repeated every time. See jmousetrap for more" m: {  }8 _+ V4 B
    // complicated schedules.
3 Y5 p- g3 M8 W8 h9 G* x2 z1 P  6 v* B. b* u; J8 |& F( k
    modelSchedule = new ScheduleImpl (getZone (), 1);
3 m- c. K2 K1 N2 A9 {- s5 u5 ^, j" e    modelSchedule.at$createAction (0, modelActions);2 r; @& O+ X) A- l9 h2 O) C
        2 ]3 j9 z) y( G* O5 o
    return this;
' _, E6 p/ h8 w: 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, 2026-4-25 17:10 , Processed in 0.026339 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