/**
* Converts a hexadecimal color number to an [R, G, B] array of normalized floats (numbers from 0.0 to 1.0).
*
* @example
* PIXI.utils.hex2rgb(0xffffff); // returns [1, 1, 1]
* @memberof PIXI.utils
* @function hex2rgb
* @param {number} hex - The hexadecimal number to convert
* @param {number[]} [out=[]] - If supplied, this array will be used rather than returning a new one
* @return {number[]} An array representing the [R, G, B] of the color where all values are floats.
*/
export function hex2rgb(hex, out = []) {
out[0] = ((hex >> 16) & 0xFF) / 255;
out[1] = ((hex >> 8) & 0xFF) / 255;
out[2] = (hex & 0xFF) / 255;
return out;
}
/**
* Converts a hexadecimal color number to a string.
*
* @example
* PIXI.utils.hex2string(0xffffff); // returns "#ffffff"
* @memberof PIXI.utils
* @function hex2string
* @param {number} hex - Number in hex (e.g., `0xffffff`)
* @return {string} The string color (e.g., `"#ffffff"`).
*/
export function hex2string(hex) {
let hexString = hex.toString(16);
hexString = '000000'.substr(0, 6 - hexString.length) + hexString;
return `#${hexString}`;
}
/**
* Converts a hexadecimal string to a hexadecimal color number.
*
* @example
* PIXI.utils.string2hex("#ffffff"); // returns 0xffffff
* @memberof PIXI.utils
* @function string2hex
* @param {string} string - The string color (e.g., `"#ffffff"`)
* @return {number} Number in hexadecimal.
*/
export function string2hex(string) {
if (typeof string === 'string' && string[0] === '#') {
string = string.substr(1);
}
return parseInt(string, 16);
}
/**
* Converts a color as an [R, G, B] array of normalized floats to a hexadecimal number.
*
* @example
* PIXI.utils.rgb2hex([1, 1, 1]); // returns 0xffffff
* @memberof PIXI.utils
* @function rgb2hex
* @param {number[]} rgb - Array of numbers where all values are normalized floats from 0.0 to 1.0.
* @return {number} Number in hexadecimal.
*/
export function rgb2hex(rgb) {
return (((rgb[0] * 255) << 16) + ((rgb[1] * 255) << 8) + (rgb[2] * 255 | 0));
}