/**
* @method normalizedRandom
*/
export const normalizedRandom = function () {
return Math.random() * 2 - 1;
};
/**
* @method clamp
* @param {number} value
* @param {number} min
* @param {number} max
*/
export const clamp = function (value, min, max) {
return Math.max(min, Math.min(value, max));
}
/**
* @method random
*/
export const random = function (rand, min, max) {
//one param
if (arguments.length === 1) {
return Math.random() * arguments[0];
} else if (arguments.length == 2) {
//min and max
max = min;
min = rand;
rand = Math.random;
}
if (!min && !max) {
return Math.random();
} else if (!max) {
//if only one is provided, then thats actually the max
max = min;
return rand() * max;
}
return rand() * (max - min) + min;
};
/**
* @method lerp
* @param {number} a
* @param {number} b
* @param {number} p
*/
export const lerp = function (a, b, p) {
return (b - a) * p + a;
}
/**
* Convert from degrees to radians.
* @method radians
* @param {number} degrees
*/
export const radians = function(degrees) {
return degrees * Math.PI / 180;
}
/**
* Convert from radians to degrees.
* @method degrees
* @param {number} radians
*/
export const degrees = function(radians) {
return radians * 180 / Math.PI;
}Source