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conorbuck/angle-between-points.js

Created May 5, 2012 22:51
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JavaScript: Find the angle between two points
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angle-between-points.js
var p1 = {
x: 20,
y: 20
};
var p2 = {
x: 40,
y: 40
};
// angle in radians
var angleRadians = Math.atan2(p2.y - p1.y, p2.x - p1.x);
// angle in degrees
var angleDeg = Math.atan2(p2.y - p1.y, p2.x - p1.x) * 180 / Math.PI;
@drewbaker
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Thanks @timjuedemann but I actually wrote a function for this eventually that allows you to change where zero is, and even calculates distance from cursor to the element too.

Check it out here: https://github.com/funkhaus/fuxt/blob/master/utils/angleDistanceToCursor.js

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