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Posted By

parkerkrhoyt on 01/16/11


Tagged

math two line algorithm distance points


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Distance Between Two Points

 / Published in: JavaScript
 

This function will calculate the distance between two provided points. This is useful in game development when calculating paths of motion for sprites. The function expects two points to be provided. A point is defined as an object with an "x" and a "y" property. The result is a numeric value of the distance.

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  1. function lineDistance( point1, point2 )
  2. {
  3.   var xs = 0;
  4.   var ys = 0;
  5.  
  6.   xs = point2.x - point1.x;
  7.   xs = xs * xs;
  8.  
  9.   ys = point2.y - point1.y;
  10.   ys = ys * ys;
  11.  
  12.   return Math.sqrt( xs + ys );
  13. }

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