Difference between revisions of "Programming turtle graphics"

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Line 1: Line 1:
===Input===
+
==Input==
 
* [[List of available commands]]
 
* [[List of available commands]]
  
 
<html>
 
<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
 
 
<form><textarea id="inputtext" rows=5 cols=35 wrap="off" style="width:600px;">t.fd(100);</textarea><br />
 
<form><textarea id="inputtext" rows=5 cols=35 wrap="off" style="width:600px;">t.fd(100);</textarea><br />
 
<input type="button" value="run" onClick="run()">
 
<input type="button" value="run" onClick="run()">
Line 11: Line 9:
 
</form>
 
</form>
 
</html>
 
</html>
===Output===
+
 
<html>
+
==Output==
<div id="box" class="jxgbox" style="width:600px; height:600px;"></div>
+
<jsxgraph box="box" width="600" height="600">
<script language="JavaScript">
+
var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-300, 300, 300, -300]});
var brd = JXG.JSXGraph.initBoard('box', {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();
Line 33: Line 30:
 
   document.getElementById('logwindow').innerHTML = '';
 
   document.getElementById('logwindow').innerHTML = '';
 
}
 
}
</script>
+
</jsxgraph>
</html>
+
 
===Log window===
+
==Log window==
 
<html>
 
<html>
 
<pre id="logwindow" class="javascript javascript" style="font-family:monospace;"></pre>
 
<pre id="logwindow" class="javascript javascript" style="font-family:monospace;"></pre>
 
</html>
 
</html>
  
===Source code===
+
==Source code==
 
<source lang="html4strict">
 
<source lang="html4strict">
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
 
 
<form><textarea id="inputtext" rows=3 cols=35 wrap="off" style="width:600px;">t.fd(100);</textarea><br />
 
<form><textarea id="inputtext" rows=3 cols=35 wrap="off" style="width:600px;">t.fd(100);</textarea><br />
 
<input type="button" value="run" onClick="run()">
 
<input type="button" value="run" onClick="run()">
Line 50: Line 44:
 
<input type="button" value="clear log" onClick="clearlog()">
 
<input type="button" value="clear log" onClick="clearlog()">
 
</form>
 
</form>
<div id="box" class="jxgbox" style="width:600px; height:600px;"></div>
 
 
<pre id="logwindow" class="javascript javascript" style="font-family:monospace;"></pre>
 
<pre id="logwindow" class="javascript javascript" style="font-family:monospace;"></pre>
 
</source>
 
</source>
 +
 
<source lang="javascript">
 
<source lang="javascript">
var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, unitX: 1, unitY: 1});
+
var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-300, 300, 300, -300]});
var t = brd.createElement('turtle');
+
var t = brd.create('turtle');
 +
 
 
function run() {
 
function run() {
 
   brd.suspendUpdate();
 
   brd.suspendUpdate();
Line 62: Line 57:
 
   eval(code);
 
   eval(code);
 
   document.getElementById('logwindow').innerHTML += code+'\n';
 
   document.getElementById('logwindow').innerHTML += code+'\n';
  //document.getElementById('inputtext').value = '';
 
 
   brd.unsuspendUpdate();
 
   brd.unsuspendUpdate();
 
}
 
}
 +
 
function clearturtle() {
 
function clearturtle() {
 
   t.cs();
 
   t.cs();
Line 72: Line 67:
 
   document.getElementById('logwindow').innerHTML = '';
 
   document.getElementById('logwindow').innerHTML = '';
 
}
 
}
</script>
 
 
</source>
 
</source>
  
* Hints how to "[[Slow the turtle down]]"
+
* How to "[[Slow the turtle down]]"
  
 
[[Category:Examples]]
 
[[Category:Examples]]
 
[[Category:Turtle Graphics]]
 
[[Category:Turtle Graphics]]

Latest revision as of 14:00, 8 June 2011

Input


Output

Log window



Source code

<form><textarea id="inputtext" rows=3 cols=35 wrap="off" style="width:600px;">t.fd(100);</textarea><br />
<input type="button" value="run" onClick="run()">
<input type="button" value="clear" onClick="clearturtle()">
<input type="button" value="clear log" onClick="clearlog()">
</form>
<pre id="logwindow" class="javascript javascript" style="font-family:monospace;"></pre>
var brd = JXG.JSXGraph.initBoard('box', {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);
  document.getElementById('logwindow').innerHTML += code+'\n';
  brd.unsuspendUpdate();
}

function clearturtle() {
  t.cs();
  //document.getElementById('inputtext').value = 't.fd(100);';
}
function clearlog() {
  document.getElementById('logwindow').innerHTML = '';
}