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math-coffee / / [-] / [@cfg-math-coffee] / math-coffee.cfg


  <script type="text/javascript" src="cfg/math/mathsvg.js"></script></script>
  <body>
  <center>

svg canvas


  <embed width="600" height="260" src="../media/d.svg" 
  script='
    initPicture(-3,3,-3,3)
    axes(1,1,"labels",1)
    // a = 1.5
    update()
  '>

coffee


  <script id="coffee"  type="text/coffeescript">
  square = (x) -> x * x
  cube   = (x) -> square(x) * x
  window.square = square;
  window.cube = cube;
  </script>

compile


  <script>
  function compile(cf) {
     //alert(cf);
     source = document.getElementById(cf).innerText;
     //alert(source);
     JS = CoffeeScript.compile(source);
     //alert(JS);
     eval(JS);
  }
  </script>
  
  <script src="coffee/documentation/vendor/jquery-1.4.2.js"></script>
  <script src="coffee/extras/coffee-script.js"></script>

initialize


  <script>
  function setfv() {
    f=document.getElementById('fv').value;
  }
  
    a = 2.5;
    xmode = 0;
    thestroke = "blue";
    compile("coffee");
    cube = window.cube;
    square = window.square;

toggle(s)


  function toggle() {
    if (xmode == 1) { thestroke = "blue"; xmode = 0; }
    else { thestroke = "red"; xmode = 1; }
    // alert("update");
    update();
    }
  function xstroke() { return thestroke; }

update(s)


  
  function update () {
  f=document.getElementById('fv').value;
    p = []
    with (Math) 
      for (var x = -a; x < a+.1; x += .1)
        p[p.length] = [x, eval(f)]
    stroke = xstroke()
    //path(p,"func")
    plot(f,-a,a)
    setText(f,"fval")
    setText(a.toFixed(2),"aval")
    setText((-a).toFixed(2),"maval")
  }
  </script>

description(s)


  <h5>
  y=<span id="fval">f</span>
  <input type="text" id="fv" name="fname" value="cube(x)" onblur="toggle()" />
  for <span id="maval">a <=x<= a</span>
  <input type="button" value="-" onclick="a-=.25;update()"/>
  <input type="button" value="+" onclick="a+=.25;update()"/>
  </h5>
  </center>
  </body>
[] readme new(s) masterclass workshop(s) CA1 CA2 CA3 CA4 CA5 project(s) NM1 NM2 NM3 NM4 NM5 resource(s) _ / .

(C) Æliens 09/09/09
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