Difference between revisions of "Rolling circle on circle"

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Line 18: Line 18:
 
// Circle
 
// Circle
 
var P = brd.create('point',[4,0],{name:'P', trace:false});
 
var P = brd.create('point',[4,0],{name:'P', trace:false});
var C = brd.create('point',[1,0],{name:'C'});
+
var C = brd.create('point',[2,0],{name:'C'});
 
var circle = brd.create('curve',[
 
var circle = brd.create('curve',[
 
                     function(t){var d = P.Dist(C),
 
                     function(t){var d = P.Dist(C),
Line 34: Line 34:
  
 
// Point on circle
 
// Point on circle
var B = brd.create('glider',[0,2,circle],{name:'B', color:'blue',trace:false});
+
var B = brd.create('glider',[0,2,circle],{name:'B', color:'blue',trace:true});
 
brd.create('segment',[C,B],{color:'black'});  
 
brd.create('segment',[C,B],{color:'black'});  
 
brd.unsuspendUpdate();
 
brd.unsuspendUpdate();
var rol = JXG.Math.Numerics.createRoulette(bigCircle, circle, 0, Math.PI/45, -1, 50, [C,P,B]);  
+
var rol = JXG.Math.Numerics.createRoulette(bigCircle, circle, 0, Math.PI/18, -1, 15, [C,P,B]);  
  
 
</jsxgraph>
 
</jsxgraph>

Revision as of 09:56, 6 October 2010

The underlying JavaScript code