Difference between revisions of "Infinity"

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Line 32: Line 32:
 
           ],  
 
           ],  
 
           {style:3, name:" "});
 
           {style:3, name:" "});
}
 
board.createElement('polygon',pt, {fillColor: '#5555'+n+''+n});
 
if(n>0)
 
viereck(arr, --n);
 
 
   }
 
   }
   board.suspendUpdate();
+
   board.createElement('polygon',pt, {fillColor: '#5555'+n+''+n});
  viereck(points,30);
+
  if(n>0)
  board.unsuspendUpdate();
+
    viereck(arr, --n);
 +
}
 +
board.suspendUpdate();
 +
viereck(points,30);
 +
board.unsuspendUpdate();
 
</script>  
 
</script>  
 
</html>
 
</html>
Line 69: Line 69:
 
           ],  
 
           ],  
 
           {style:3, name:" "});
 
           {style:3, name:" "});
}
 
board.createElement('polygon',pt, {fillColor: '#5555'+n+''+n});
 
if(n>0)
 
viereck(arr, --n);
 
 
   }
 
   }
   board.suspendUpdate();
+
   board.createElement('polygon',pt, {fillColor: '#5555'+n+''+n});
  viereck(points,30);
+
  if(n>0)
  board.unsuspendUpdate();
+
    viereck(arr, --n);
 +
}
 +
board.suspendUpdate();
 +
viereck(points,30);
 +
board.unsuspendUpdate();
 
</source>
 
</source>

Revision as of 18:55, 28 November 2008

Just enjoy this construction...

 var board = JXG.JSXGraph.initBoard('jxgbox', {originX: 300, originY: 300, unitX: 50, unitY: 50})
 var S = board.createElement('slider', [-5,-6,10,0,1,0.5], {name:'S'});
 var points = new Array();
 points[0] = board.createElement('point',[5, 5], {name:' '});	
 points[1] = board.createElement('point',[-5, 5], {name:' '});	
 points[2] = board.createElement('point',[-5, -5], {name:' '});	
 points[3] = board.createElement('point',[5, -5], {name:' '});	
	 		 	
 function viereck(pt, n) {
  var arr = new Array();
  for(var i = 0; i < 4; i++) {
   arr[i] = board.createElement('point', 
         [function(t) {
            return function () {var x = pt[t].X(); 
                                var x1 = pt[(t+1)%4].X(); 
                                var s = S.X();
                                return x+(x1-x)*s;
                         }}(i), 
          function(t) {
            return function () {var y = pt[t].Y(); 
                                var y1 = pt[(t+1)%4].Y(); 
                                var s = S.X();
                                return y+(y1-y)*s;
                         }}(i)
          ], 
          {style:3, name:" "});
  }
  board.createElement('polygon',pt, {fillColor: '#5555'+n+''+n});
  if(n>0)
    viereck(arr, --n);
 }
 board.suspendUpdate();
 viereck(points,30);
 board.unsuspendUpdate();