Difference between revisions of "Rolling circle on circle"
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A WASSERMANN (talk | contribs) |
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| Line 1: | Line 1: | ||
| − | |||
<html> | <html> | ||
| − | |||
<form> | <form> | ||
<input type="button" value="start" onclick="rol.start()"> | <input type="button" value="start" onclick="rol.start()"> | ||
| Line 17: | Line 15: | ||
// 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',[ | + | 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), |
| + | beta = JXG.Math.Geometry.rad([C.X()+1,C.Y()],C,P); | ||
| + | t += beta; | ||
return C.X()+d*Math.cos(t); | return C.X()+d*Math.cos(t); | ||
}, | }, | ||
| − | function(t){var d = P.Dist(C); | + | function(t){var d = P.Dist(C), |
| + | beta = JXG.Math.Geometry.rad([C.X()+1,C.Y()],C,P); | ||
| + | t += beta; | ||
return C.Y()+d*Math.sin(t); | return C.Y()+d*Math.sin(t); | ||
}, | }, | ||
| Line 32: | Line 34: | ||
brd.create('segment',[C,B],{color:'black'}); | brd.create('segment',[C,B],{color:'black'}); | ||
brd.unsuspendUpdate(); | brd.unsuspendUpdate(); | ||
| − | var rol = | + | var rol = brd.createRoulette(bigCircle, circle, 0, Math.PI/45, -1, 150, [C,P,B]); |
</jsxgraph> | </jsxgraph> | ||
Latest revision as of 19:19, 23 November 2010
