Difference between revisions of "Spirograph - geometric construction"

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Line 1: Line 1:
 
<jsxgraph width="600" height="600">
 
<jsxgraph width="600" height="600">
 +
(function() {
 
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5], keepaspectratio:true});
 
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5], keepaspectratio:true});
  
Line 17: Line 18:
 
var g2 = brd.create('line',[M,Cprime], {strokeColor:'lightgray'});
 
var g2 = brd.create('line',[M,Cprime], {strokeColor:'lightgray'});
 
var Cstern = brd.create('glider',[1,1,g2], {name:"C*", trace:true, fillColor:'green', strokeColor:'green'});
 
var Cstern = brd.create('glider',[1,1,g2], {name:"C*", trace:true, fillColor:'green', strokeColor:'green'});
 +
})();
 +
</jsxgraph>
  
 +
<jsxgraph width="600" height="600" box="jxgbox2">
 +
(function() {
 +
var brd = JXG.JSXGraph.initBoard('jxgbox2',{boundingbox:[-5,5,5,-5], keepaspectratio:true});
 +
 +
var O = brd.create('point',[0,0],{name:'O',fixed:true, fillColor:'blue', strokeColor:'blue'});
 +
var A = brd.create('point',[2,0],{name:'A'});
 +
var k = brd.create('circle',[O,A],{name:'k'});
 +
var B = brd.create('glider',[0.7,1,k],{name:'B drag me'});
 +
var g1 = brd.create('line',[O,B], {strokeColor:'lightgray'});
 +
var C = brd.create('reflection',[g1,A],{name:'C', fillColor:'blue', strokeColor:'blue'});
 +
 +
var M = brd.create('glider',[2,2,g1], {name:'M', fillColor:'red', strokeColor:'red'});
 +
var k2 = brd.create('circle',[M,B],{name:'k'}); 
 +
 +
var gpar = brd.create('parallel',[O,C,M], {name:"g", strokeColor:'lightgray'});
 +
var Cprime = brd.create('intersection',[gpar,k2,0], {name:"C'", fillColor:'blue', strokeColor:'blue'});
 +
 +
var g2 = brd.create('line',[M,Cprime], {strokeColor:'lightgray'});
 +
var Cstern = brd.create('glider',[1,1,g2], {name:"C*", trace:true, fillColor:'green', strokeColor:'green'});
 +
})();
 
</jsxgraph>
 
</jsxgraph>
  

Revision as of 18:14, 19 July 2010