Turtle spiral: Difference between revisions

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Line 1: Line 1:
<html>
<html>
<form><textarea id="inputtext" rows=5 cols=35 wrap="off" style="width:600px;">for (var i=0;i<1000;i++){
<form><textarea id="inputtext" rows=5 cols=35 wrap="off" style="width:600px;">for (var i=0;i<100;i++){
  t.forward(i*0.5);
  t.forward(i*3);
  t.left(71);
  t.left(71);
}
}
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<jsxgraph width="600" height="600">
<jsxgraph width="600" height="600">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 300, originY: 300, unitX: 1, unitY: 1});
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-300, 300, 300, -300]});
var t = brd.createElement('turtle');
var t = brd.create('turtle');


function run() {
function run() {
   brd.suspendUpdate();
   brd.suspendUpdate();
   var code = $('inputtext').value;
   var code = document.getElementById('inputtext').value;
   if (code=='') { return; }
   if (code=='') { return; }
   eval(code);
   eval(code);
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   t.cs();
   t.cs();
}
}
run();
</jsxgraph>
</jsxgraph>


===Source code===
===Source code===
<source lang="html4strict">
<source lang="javascript">
<jsxgraph width="600" height="600">
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-300, 300, 300, -300]});
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 300, originY: 300, unitX: 1, unitY: 1});
var t = brd.create('turtle');
var t = brd.createElement('turtle');


function run() {
function run() {
   brd.suspendUpdate();
   brd.suspendUpdate();
   var code = $('inputtext').value;
   var code = document.getElementById('inputtext').value;
   if (code=='') { return; }
   if (code=='') { return; }
   eval(code);
   eval(code);
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   t.cs();
   t.cs();
}
}
</jsxgraph>
run();
</source>
</source>


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===External links===
===External links===
* [http://www.geogebra.org/de/wiki/index.php/Turtlegrafik Compare with GeoGebra]
* [http://www.geogebra.org/de/wiki/index.php/Turtlegrafik A similar construction with GeoGebra]
* [http://wiki.zum.de/Turtle-Grafik ZUM-Wiki's Turtle graphics page]
* [http://wiki.zum.de/Turtle-Grafik ZUM-Wiki's Turtle graphics page]


[[Category:Examples]]
[[Category:Examples]]
[[Category:Turtle Graphics]]
[[Category:Turtle Graphics]]

Latest revision as of 07:41, 9 June 2011


Source code

var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-300, 300, 300, -300]});
var t = brd.create('turtle');

function run() {
  brd.suspendUpdate();
  var code = document.getElementById('inputtext').value;
  if (code=='') { return; }
  eval(code);
  brd.unsuspendUpdate();
}
function clearturtle() {
  t.cs();
}
run();

External links

Retrieved from "http://jsxgraph.org/wiki/index.php?title=Turtle_spiral&oldid=5325"