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: 9535|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:
3 F7 Z+ ~6 a* s: `# d* l  V9 c% r* i/ n/ w$ _" N9 {: q
public Object buildActions () {3 U+ S$ N1 i  k) E- f
    super.buildActions();
2 D/ u$ a3 H7 P  ^3 G3 _   
( V5 X; e$ Q! }    // Create the list of simulation actions. We put these in
4 K/ V% @& I0 ]  k8 M    // an action group, because we want these actions to be3 d* X  J. W  [
    // executed in a specific order, but these steps should
5 W4 H% [9 T* `- h+ p: w    // take no (simulated) time. The M(foo) means "The message" t! P8 m: t# h/ X- J0 \
    // called <foo>". You can send a message To a particular
' u( u% R# {& c    // object, or ForEach object in a collection.4 a' k5 ~. E& g) d; C2 b0 d
        . K1 l2 e, Y8 _/ q" `
    // Note we update the heatspace in two phases: first run
# l* Y- Z+ C( ^: M- U    // diffusion, then run "updateWorld" to actually enact the, u  I) B7 D4 ]- B7 N* @, v
    // changes the heatbugs have made. The ordering here is
- _6 j5 G8 @: C# B" v0 J; Y  o    // significant!
) ~5 n5 m. J& L6 P        / Q7 {& F7 R, @, U' U
    // Note also, that with the additional4 P5 }3 c1 F" u" N3 [' a  _( h) P
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
$ N$ a5 D9 l! c& g' S' \* S    // randomize the order in which the bugs actually run  e: F" b: W+ M8 D
    // their step rule.  This has the effect of removing any
6 p8 Q8 f/ K' X    // systematic bias in the iteration throught the heatbug6 X# f2 d% n; B# m, W1 ~
    // list from timestep to timestep: L/ L8 r6 D4 F! a
        
7 A" z4 c; @: P0 a6 d2 m    // By default, all `createActionForEach' modelActions have* n" W+ h' M7 n: q. A0 ~% e
    // a default order of `Sequential', which means that the: f6 [& j4 @" T' h
    // order of iteration through the `heatbugList' will be
5 w' G5 u. p; \( |    // identical (assuming the list order is not changed5 ]$ {$ S$ u0 y# g: A
    // indirectly by some other process)./ N4 F" x4 g0 U7 m4 c4 C  A: Z0 w7 B0 e8 M
    : g, z4 b# T3 q9 R
    modelActions = new ActionGroupImpl (getZone ());
, Z3 b; d: Q' A  G# U6 A
2 k6 E: Z9 b  f) E+ z* w+ y3 K( m    try {2 P7 f4 ?. k0 A9 o6 C2 i
      modelActions.createActionTo$message
2 U$ V) d8 E1 [7 f9 W        (heat, new Selector (heat.getClass (), "stepRule", false));
  ^9 P( A. ^- U" E: X    } catch (Exception e) {  E# J- v  E% _
      System.err.println ("Exception stepRule: " + e.getMessage ());
4 U- u) C. v- l, i    }
9 h, }( i* l% ~, h, i: L
$ f& ~) w" P! a) f3 L: w  \    try {" @- f3 g- l3 o! Q8 d
      Heatbug proto = (Heatbug) heatbugList.get (0);' ]; b$ H* t% M: Y. L8 I7 M9 e( p  M
      Selector sel =
( ^) g8 h$ K: Q$ ]        new Selector (proto.getClass (), "heatbugStep", false);1 H: L$ y6 B4 j% C8 e  @0 N8 a
      actionForEach =$ n( z& M8 o5 e9 K8 u7 K4 X
        modelActions.createFActionForEachHomogeneous$call
: }! I# C/ U" ~) C        (heatbugList,1 W4 |8 v' i& z# n
         new FCallImpl (this, proto, sel,
1 `/ G! V7 L9 ^/ M# J                        new FArgumentsImpl (this, sel)));
4 k6 i  ~3 V  r9 w# j    } catch (Exception e) {( @4 k4 ~' C7 q7 T! r
      e.printStackTrace (System.err);
9 F! g* G  F$ O9 S4 {+ c    }
& ?8 X- f% p' P    4 v; E* V" x0 z/ q1 H( Q
    syncUpdateOrder ();
4 I* ~& t' \$ o0 h9 s  F' ^3 _9 A0 l; A  j9 A. k  R
    try {
* W5 I* R& ~9 C6 b  X# |      modelActions.createActionTo$message 8 W: E9 j6 i9 ]& o
        (heat, new Selector (heat.getClass (), "updateLattice", false));
8 S* e7 Z. A" r* k! @; x3 i    } catch (Exception e) {
5 t4 q8 c. N' t0 y* C' a. J8 M( L$ G      System.err.println("Exception updateLattice: " + e.getMessage ());- h# I3 a" [0 [1 k4 K
    }
0 u" d, h: \* G# D        ; C' G# s4 u8 D( h8 x8 J
    // Then we create a schedule that executes the
! c% a& ]- H/ V    // modelActions. modelActions is an ActionGroup, by itself it" e: @+ L3 v& l
    // has no notion of time. In order to have it executed in, c* d% m* o' `) `1 o* i/ n# F
    // time, we create a Schedule that says to use the
: h( x7 W  V  [2 N% V* N" z    // modelActions ActionGroup at particular times.  This
+ M4 e: H8 G+ O; P6 W    // schedule has a repeat interval of 1, it will loop every
/ n/ h- k; h) c# Q+ U    // time step.  The action is executed at time 0 relative to
* y# ?5 W, Y7 q/ `) x( r    // the beginning of the loop.* u( a& g  A& ^. X9 x0 _

) N* A$ [5 D1 M7 ]    // This is a simple schedule, with only one action that is
/ E# g/ ?8 v. Z    // just repeated every time. See jmousetrap for more# z7 o( Z& W" l9 w
    // complicated schedules.2 K1 D+ J1 B& @& [6 E
  1 H5 j8 v" c# V$ v+ R0 f( g2 F
    modelSchedule = new ScheduleImpl (getZone (), 1);
# Q3 c8 e1 J4 _: U  M+ z    modelSchedule.at$createAction (0, modelActions);. M  q8 L: T$ Z
        
# m1 P9 y7 L3 }& O# }8 _" r/ S    return this;
1 _( Q" ^% k  P9 P( 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, 2026-3-9 13:47 , Processed in 0.015880 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