Interfacing function
eng

##
BOUNCEXY

### File content

    function [x,y,typ]=BOUNCEXY(job,arg1,arg2)
    //Scicos 2D animated visualization block
    // 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=[];
    case 'getorigin' then
      [x,y]=standard_origin(arg1)
    case 'set' then
      x=arg1;
      graphics=arg1.graphics;exprs=graphics.exprs
      model=arg1.model;
      dstate=model.dstate
      while %t do
        [ok,clrs,siz,win,imode,xmin,xmax,ymin,ymax,exprs]=getvalue(..
    	'Set Scope parameters',..
    	['colors';
    	 'radii';
    	 'window number (-1 for automatic)';
    	 'animation mode (0,1)';
    	'Xmin';
    	'Xmax';
    	'Ymin';
    	'Ymax';
    	],..
    	 list('vec',-1,'vec',-1,'vec',1,'vec',1,'vec',1,'vec',1,'vec',1,'vec',1),exprs)
        if ~ok then break,end //user cancel modification

        mess=[]
        if size(clrs,'*')<>size(siz,'*') then
          mess=[mess;'colors and radii must have equal size (number of balls)';' ']
          ok=%f
        end
        if win<-1 then
          mess=[mess;'Window number cannot be inferior than -1';' ']
          ok=%f
        end
        if ymin>=ymax then
          mess=[mess;'Ymax must be greater than Ymin';' ']
          ok=%f
        end
        if xmin>=xmax then
          mess=[mess;'Xmax must be greater than Xmin';' ']
          ok=%f
        end
        if ~ok then
          message(mess)
        else
          rpar=[xmin;xmax;ymin;ymax]
          ipar=[win;imode;clrs(:)]
          z=[]
          for i=1:size(clrs,'*')
    	z(6*(i-1)+1)=0
    	z(6*(i-1)+2)=0
    	z(6*(i-1)+3)=2*siz(i)
    	z(6*(i-1)+4)=2*siz(i)
    	z(6*(i-1)+5)=0.000
    	z(6*(i-1)+6)=64.0*360.000;
          end
          model.dstate=z;
          model.rpar=rpar;model.ipar=ipar
          graphics.exprs=exprs;
          x.graphics=graphics;x.model=model
          break
        end
      end
    case 'define' then
      win=-1; imode=1;clrs=[1;2];
      siz=[1;1]
      xmin=-5;xmax=5;ymin=0;ymax=15

      model=scicos_model()
      model.sim=list('bouncexy',4)
      model.in=[-1;-1]
      model.in2=[1;1]
      model.intyp = [1;1]
      model.evtin=1
      z=[]
      for i=1:size(clrs,'*')
        z(6*(i-1)+1)=0
        z(6*(i-1)+2)=0
        z(6*(i-1)+3)=2*siz(i)
        z(6*(i-1)+4)=2*siz(i)
        z(6*(i-1)+5)=0.000
        z(6*(i-1)+6)=64.0*360.000;
      end
      model.dstate=z
      model.rpar=[xmin;xmax;ymin;ymax]
      model.ipar=[win;imode;clrs(:)]
      model.blocktype='d'
      model.firing=[]
      model.dep_ut=[%f %f]

      exprs=[strcat(sci2exp(clrs));
    	 strcat(sci2exp(siz));
    	  strcat(sci2exp(win));
    	 strcat(sci2exp(1));
    	strcat(sci2exp(xmin));
          strcat(sci2exp(xmax));
          strcat(sci2exp(ymin));
          strcat(sci2exp(ymax))]
      gr_i=['thick=xget(''thickness'');xset(''thickness'',2);';
            't=(0:0.3:2*%pi)'';';
            'xx=orig(1)+(1/5+(cos(2.2*t)+1)*3/10)*sz(1);';
            'yy=orig(2)+(1/4.3+(sin(t)+1)*3/10)*sz(2);';
            'xpoly(xx,yy,''lines'');'
            'xset(''thickness'',thick);']
      x=standard_define([2 2],model,exprs,gr_i)
    end
    endfunction