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/* | |
* Different ways to save state or configure a function | |
* | |
*/ | |
//------------------------------------------------- | |
// Typical prototypical inheritance | |
var Talker = function( phrase ) { | |
this.phrase = phrase; |
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findPerpendicularDistance = ( point, line ) -> | |
[pointX,pointY] = point[0..1] | |
lineStart = x: line[0][0], y: line[0][1] | |
lineEnd = x: line[1][0], y: line[1][1] | |
slope = ( lineEnd.y - lineStart.y ) / ( lineEnd.x - lineStart.x ) | |
intercept = lineStart.y - ( slope * lineStart.x ) | |
Math.abs( slope * pointX - pointY + intercept ) / Math.sqrt( Math.pow( slope, 2) + 1) | |
douglasPeucker = ( points, epsilon ) -> | |
maxIndex = maxDistance = 0 |
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function findPerpendicularDistance(point, line) { | |
var pointX = point[0], | |
pointY = point[1], | |
lineStart = { | |
x: line[0][0], | |
y: line[0][1] | |
}, | |
lineEnd = { | |
x: line[1][0], | |
y: line[1][1] |