View source for Circle inversion

The point <math>P'</math> is the result of a circle inversion of <math>P</math> on circle <math>c</math> (black circle line).
<jsxgraph width="600" height="600">
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5]});
var m = brd.create('point',[0.5,0.3],{name:'M'});
var b = brd.create('point',[3,0]);
var c = brd.create('circle',[m,b],{strokeColor:'black',name:'c'});
var m1 = brd.create('point',[-4,2],{name:'M_1'});
var b1 = brd.create('point',[-4,3],{name:'C_1'});
var c1 = brd.create('circle',[m1,b1]);
var p = brd.create('glider',[-4,1,c1],{name:'P [drag me]'});

var t = brd.create('polar', [c,p], {name:'polar', withLabel:true, strokeColor:'gray', dash:2}); 
var l = brd.create('line', [m,p], {name:'', withLabel:false, strokeColor:'gray', dash:2}); 
var s = brd.create('intersection', [l,t,0], {name:"P'", withLabel:true, trace:true}); 
</jsxgraph>

===The underlying JavaScript code===
<source lang="javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5]});
var m = brd.create('point',[0.5,0.3],{name:'M'});
var b = brd.create('point',[3,0]);
var c = brd.create('circle',[m,b],{strokeColor:'black',name:'c'});
var m1 = brd.create('point',[-4,2],{name:'M_1'});
var b1 = brd.create('point',[-4,3],{name:'C_1'});
var c1 = brd.create('circle',[m1,b1]);
var p = brd.create('glider',[-4,1,c1],{name:'P [drag me]'});

var t = brd.create('polar', [c,p], {name:'polar', withLabel:true, strokeColor:'gray', dash:2}); 
var l = brd.create('line', [m,p], {name:'', withLabel:false, strokeColor:'gray', dash:2}); 
var s = brd.create('intersection', [l,t,0], {name:"P'", withLabel:true, trace:true}); 
</source>

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