Difference between revisions of "Slow the turtle down"

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Line 1: Line 1:
 +
This is an example, where the turtle runs controlled by the setTimeout() method
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of JavaScript.
 
<html>
 
<html>
 
<form><input type="button" value="run" onclick="run(100)"></form>
 
<form><input type="button" value="run" onclick="run(100)"></form>
Line 15: Line 17:
 
}
 
}
 
</jsxgraph>
 
</jsxgraph>
 +
 +
<source lang="xml">
 +
<html>
 +
<form><input type="button" value="run" onclick="run(100)"></form>
 +
</html>
 +
<jsxgraph width="500" height="500">
 +
var brd = JXG.JSXGraph.initBoard('jxgbox',{unitX:1, unitY:1, originX:250, originY:250});
 +
var t = brd.createElement('turtle');
 +
 +
function run(n) {
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  if (n>0) {
 +
    t.fd(20);
 +
    t.lt(90*(1-n/100));
 +
    var st = 'run(' + (n-1) + ')';
 +
    setTimeout(st,50);
 +
  }
 +
}
 +
</jsxgraph>
 +
</source>
 +
 
[[Category:Examples]]
 
[[Category:Examples]]
 
[[Category:Turtle Graphics]]
 
[[Category:Turtle Graphics]]

Revision as of 15:18, 25 February 2009

This is an example, where the turtle runs controlled by the setTimeout() method of JavaScript.

<html>
<form><input type="button" value="run" onclick="run(100)"></form>
</html>
<jsxgraph width="500" height="500">
var brd = JXG.JSXGraph.initBoard('jxgbox',{unitX:1, unitY:1, originX:250, originY:250});
var t = brd.createElement('turtle');

function run(n) {
   if (n>0) {
     t.fd(20);
     t.lt(90*(1-n/100));
     var st = 'run(' + (n-1) + ')';
     setTimeout(st,50);
   }
}
</jsxgraph>