Restrict points to limited area: Difference between revisions

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var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,5,5,-5], axis:true});
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,5,5,-5], axis:true});
var A = brd.create('point', [-1,-1], {name:'A'});
var A = brd.create('point', [-1,-1], {name:'A'});
var B = brd.create('point', [-3, 2], {name:'B'});
var B = brd.create('point', [-3, -3], {name:'B'});
var C = brd.create('point', [ 3, 0], {name:'C'});
var C = brd.create('point', [ -2, 0], {name:'C'});


brd.on('move', function() {
brd.on('move', function() {
   var list = [A, B, C], i;
   var list = [A, B, C], i;
 
  brd.suspendUpdate();
   for (i = 0; i < list.length; ++i) {
   for (i = 0; i < list.length; ++i) {
       list[i].moveTo([Math.min(0, list[i].X()), Math.min(0, list[i].Y())]);
       list[i].moveTo(
          [
            Math.min(0, list[i].X()),  
            Math.min(0, list[i].Y())
          ]
        );
   }
   }
  brd.unsuspendUpdate();
  });
  });


Line 18: Line 25:
===The underlying JavaScript code===
===The underlying JavaScript code===
<source lang="javascript">
<source lang="javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,5,5,-5], axis:true});
var P0 = brd.create('point', [-4,-1], {name:'', face:'[]'});
var P1 = brd.create('point', [4,-1], {name:'', face:'[]'});
var li = brd.create('line', [P0,P1]);
var A = brd.create('glider', [0,-1,li], {name:'A'});
var B = brd.create('glider', [-3,-1,li], {name:'B'});
var C = brd.create('glider', [ 3,-1,li], {name:'C'});
brd.on('update', function() {
  var list = [A, B, C], i;
  for (i=
});
</source>
</source>


[[Category:Examples]]
[[Category:Examples]]

Revision as of 09:46, 18 June 2013

The underlying JavaScript code

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