Difference between revisions of "Slow the turtle down"

From JSXGraph Wiki
Jump to navigationJump to search
Line 33: Line 33:
 
     t.lt(90*(1-n/100));
 
     t.lt(90*(1-n/100));
 
     var st = 'run(' + (n-1) + ')';
 
     var st = 'run(' + (n-1) + ')';
     setTimeout(st,50);
+
     setTimeout(st,25);
 
   }
 
   }
 
}
 
}

Revision as of 16:47, 25 February 2009

This is an example, where the turtle speed is 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',[100,-50],{strokeOpacity:0.7,fillColor:'#ff8800',fillOpacity:0.2});
t.setPenSize(3);

function run(n) {
   if (n>0) {
     t.fd(20);
     t.lt(90*(1-n/100));
     var st = 'run(' + (n-1) + ')';
     setTimeout(st,25);
   }
}
</jsxgraph>