Interfacing function
eng

##
SAT_f

### File content

    function [x,y,typ]=SAT_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;
      while %t do
        [ok,minp,maxp,pente,exprs]=getvalue('Set Saturation parameters',..
    	['Min';'Max';'Slope'],list('vec',1,'vec',1,'vec',1),exprs)
        if ~ok then break,end
        if maxp<=0  then
          message('Max must be strictly positive')
        elseif pente<=0 then
          message('Slope must be strictly positive')
        else
          rpar=[minp/pente;maxp/pente;pente]
          model.rpar=rpar
          model.firing=[] //compatibility
          graphics.exprs=exprs
          x.graphics=graphics;x.model=model
          break
        end
      end
    case 'define' then
      minp=-1;maxp=1;slope=1;rpar=[minp;maxp;slope]

      model=scicos_model()
      model.sim=list('lusat',1)
      model.in=1
      model.nzcross=2
      model.out=1
      model.rpar=[minp;maxp;slope]
      model.blocktype='c'
      model.dep_ut=[%t %f]

      exprs=[string(minp);string(maxp);string(slope)]
      gr_i=['thick=xget(''thickness'');xset(''thickness'',2);';
        'xx=orig(1)+[4/5;1/2+1/5;1/2-1/5;1/5]*sz(1);';
        'yy=orig(2)+[1-1/5;1-1/5;1/5;1/5]*sz(2);';
        'xpoly(xx,yy,''lines'');';
        'xset(''thickness'',thick)']
      x=standard_define([2 2],model,exprs,gr_i)
    end
    endfunction