mathjo - commit 063466a

diff --git a/mathjo.js b/mathjo.js index 48edc36..5368cd1 100644 --- a/mathjo.js +++ b/mathjo.js @@ -24,6 +24,18 @@ const MathJo = { return [x / length, y / length]; }, + /** + * Return the 2D Euclidian distance between points (x1,y1) and (x2,y2) + * @param x1 the x-position of point 1 + * @param y1 the y-position of point 1 + * @param x2 the x-position of point 2 + * @param y2 the y-position of point 2 + * @return the distance between (x1,y1) and (x2,y2) + */ + getDistanceTwoPoints: function (x1, y1, x2, y2) { + return Math.hypot(x1 - x2, y1 - y2); + }, + /** * Converts an angle in radians to a normalized direction vector. * @param a The angle in radians. @@ -59,6 +71,16 @@ const MathJo = { return (v <= mx && v >= mn); }, + /** + * Truncates all numbers in an array to a specified number of decimal places. + * @param c The array of numbers. + * @param y The number of decimal places. + * @return A new array with truncated values. + */ + truncateArray: function (c, y) { + return c.map(num => Maths.truncateNumber(num, y)); + }, + /** * Truncates a number to a specified number of decimal places. * @param x The number to truncate. @@ -70,16 +92,6 @@ const MathJo = { return Math.trunc(x * factor) / factor; }, - /** - * Truncates all numbers in an array to a specified number of decimal places. - * @param c The array of numbers. - * @param y The number of decimal places. - * @return A new array with truncated values. - */ - truncateArray: function (c, y) { - return c.map(num => Maths.truncateNumber(num, y)); - }, - /** * Wraps a value around within a given range [0, max). * @param v The value to wrap.