JavaScript atan2

Returns the arc tangent of y/x, with the resulting quadrant determined by the signs of y and x

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function atan2 (y, x) {
    // Returns the arc tangent of y/x, with the resulting quadrant determined by the signs of y and x  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/atan2    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: atan2(1, 1);
    // *     returns 1: 0.7853981633974483
    return Math.atan2(y, x);
}

Examples

Running

1

atan2(1, 1);

Should return

1

0.7853981633974483

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

php.js uses JsLint to help us keep our code consistent and prevent some common bugs.

Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.

Authors

Thanks to the following developers, you get to have atan2 goodness in JavaScript.

• Brett Zamir ( original )

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