Difference between revisions of "Circular arc approximation by cubic Bezier curve"

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Line 4: Line 4:
 
var M = brd.create('point', [0,0], {name:'M'});
 
var M = brd.create('point', [0,0], {name:'M'});
 
var C = brd.create('point', [0,-1], {name:'D'});
 
var C = brd.create('point', [0,-1], {name:'D'});
var c = brd.create('circle', [M,1], {strokeWidth:1});
+
var c = brd.create('circle', [M,C], {strokeWidth:1});
 
var A = brd.create('glider', [1,0,c], {name:'A'});
 
var A = brd.create('glider', [1,0,c], {name:'A'});
 
var B = brd.create('glider', [0,1,c], {name:'B'});
 
var B = brd.create('glider', [0,1,c], {name:'B'});
Line 16: Line 16:
 
     r = M.Dist(A);
 
     r = M.Dist(A);
 
     d = Math.sqrt((ax+bx)*(ax+bx) + (ay+by)*(ay+by));
 
     d = Math.sqrt((ax+bx)*(ax+bx) + (ay+by)*(ay+by));
return 0.5;
+
 
 
     if (Math.abs(by-ay)>JXG.Math.eps) {
 
     if (Math.abs(by-ay)>JXG.Math.eps) {
 
         return (ax+bx)*(r/d-0.5)*8.0/3.0/(by-ay);
 
         return (ax+bx)*(r/d-0.5)*8.0/3.0/(by-ay);

Revision as of 13:36, 1 July 2012

The underlying JavaScript code