Difference between revisions of "Function graph animation"

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</jsxgraph>
 
</jsxgraph>
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 +
===The JavaScript code===
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<source lang="javascript">
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  var f = function(x) { return Math.sin(x); };
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 +
  var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,2,5,-2], axis:true, keepaspectratio:false});
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 +
  var start = -4,
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      end = 4,
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      x = start,
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      step = 0.2,
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      turtle = brd.create('turtle', [x, f(x)]);
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  var moveForward = function() {
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        x += step;
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        if (x>end) {
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            return;
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        }
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        turtle.moveTo([x, f(x)]);
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        setTimeout(moveForward, 200); // delay by 200 ms
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    };
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  turtle.hideTurtle();    // Hide the turtle arrow
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  moveForward();
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</source>
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[[Category:Examples]]
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[[Category:Calculus]]
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[[Category:Turtle Graphics]]

Revision as of 08:28, 31 October 2012

The JavaScript code

  var f = function(x) { return Math.sin(x); };

  var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,2,5,-2], axis:true, keepaspectratio:false});

  var start = -4,
      end = 4,
      x = start,
      step = 0.2,
      turtle = brd.create('turtle', [x, f(x)]);

  var moveForward = function() {
         x += step;
         if (x>end) {
            return;
         }
         turtle.moveTo([x, f(x)]);
         setTimeout(moveForward, 200); // delay by 200 ms
     };

  turtle.hideTurtle();    // Hide the turtle arrow
  moveForward();