Interfacing function
eng

##
SWITCH_f

### File content

    function [x,y,typ]=SWITCH_f(job,arg1,arg2)
    // Copyright INRIA
    x=[];y=[];typ=[]
    select job
    case 'plot' then
      standard_draw(arg1)
    case 'getinputs' then
      [x,y,typ]=standard_inputs(arg1)
    case 'getoutputs' then
      [x,y,typ]=standard_outputs(arg1)
    case 'getorigin' then
      [x,y]=standard_origin(arg1)
    case 'set' then
      x=arg1;
      graphics=arg1.graphics;exprs=graphics.exprs
      model=arg1.model;ipar=model.ipar
      while %t do
        [ok,nin,z0,exprs]=getvalue('Set switch parameters',..
    	['number of inputs';'connected input'],..
    	list('vec',1,'vec',1),exprs)
        if ~ok then break,end
        if z0>nin|z0<=0 then
          message('initial connected input is not a valid input port number')
        else
          [model,graphics,ok]=check_io(model,graphics,-ones(nin,1),-1,[],[])
          if ok then
    	graphics.exprs=exprs;
    	model.ipar=z0-1
    	x.graphics=graphics;x.model=model
    	break
          end
        end
      end
    case 'define' then
      i0=0
      in=[-1;-1]
      nin=2
      model=scicos_model()
      model.sim=list('switchn',2)
      model.in=in
      model.out=-1
      model.ipar=i0
      model.blocktype='c'
      model.firing=[]
      model.dep_ut=[%t %t]

      exprs=[string(nin);string(i0+1)]
      gr_i=['xstringb(orig(1),orig(2),[''switch'';string(model.ipar+1)],sz(1),sz(2),''fill'');']
      x=standard_define([2 2],model,exprs,gr_i)
    end
    endfunction