Created
February 23, 2012 17:00
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@brysonian's Superformula in JavaScript
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(function() { | |
var root = this; | |
var previousSuperformula = root.Superformula; | |
var NP = 360, phi = Math.PI * 2 / NP; | |
var Superformula = root.Superformula = function(m, n1, n2, n3) { | |
var points = []; | |
for (var i = 0; i <= NP; i++) { | |
points.push(new Point(m, n1, n2, n3, phi * i)); | |
} | |
return points; | |
}; | |
Superformula.noConflict = function() { | |
root.Superformula = previousSuperformula; | |
return this; | |
}; | |
var Point = function(m, n1, n2, n3, phi) { | |
var r, t1, t2, a = 1, b = 2; | |
t1 = Math.cos(m * phi / 4) / a; | |
t1 = Math.abs(t1); | |
t1 = Math.pow(t1, n2); | |
t2 = Math.sin(m * phi / 4) / b; | |
t2 = Math.abs(t2); | |
t2 = Math.pow(t2, n3); | |
r = Math.pow(t1 + t2, 1 / n1); | |
if (Math.abs(r) === 0) { | |
this.x = 0; | |
this.y = 0; | |
} else { | |
r = 1 / r; | |
this.x = r * Math.cos(phi); | |
this.y = r * Math.sin(phi); | |
} | |
}; | |
})(); |
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