arcade-physics
Version:
Use Arcade Physics without Phaser.
74 lines • 2.12 kB
JavaScript
;
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2020 Photon Storm Ltd.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.TranslateMatrix = void 0;
const RotateLeft_1 = require("../RotateLeft");
const RotateRight_1 = require("../RotateRight");
/**
* Translates the given Array Matrix by shifting each column and row the
* amount specified.
*
* A matrix is a two-dimensional array (array of arrays), where all sub-arrays (rows)
* have the same length. There must be at least two rows. This is an example matrix:
*
* ```
* [
* [ 1, 1, 1, 1, 1, 1 ],
* [ 2, 0, 0, 0, 0, 4 ],
* [ 2, 0, 1, 2, 0, 4 ],
* [ 2, 0, 3, 4, 0, 4 ],
* [ 2, 0, 0, 0, 0, 4 ],
* [ 3, 3, 3, 3, 3, 3 ]
* ]
* ```
*
* @function Phaser.Utils.Array.Matrix.Translate
* @since 3.50.0
*
* @generic T
* @genericUse {T[][]} - [matrix,$return]
*
* @param {T[][]} [matrix] - The array matrix to translate.
* @param {number} [x=0] - The amount to horizontally translate the matrix by.
* @param {number} [y=0] - The amount to vertically translate the matrix by.
*
* @return {T[][]} The translated matrix.
*/
const TranslateMatrix = (matrix, x, y) => {
if (x === undefined) {
x = 0;
}
if (y === undefined) {
y = 0;
}
// Vertical translation
if (y !== 0) {
if (y < 0) {
// Shift Up
(0, RotateLeft_1.RotateLeft)(matrix, Math.abs(y));
}
else {
// Shift Down
(0, RotateRight_1.RotateRight)(matrix, y);
}
}
// Horizontal translation
if (x !== 0) {
for (let i = 0; i < matrix.length; i++) {
const row = matrix[i];
if (x < 0) {
(0, RotateLeft_1.RotateLeft)(row, Math.abs(x));
}
else {
(0, RotateRight_1.RotateRight)(row, x);
}
}
}
return matrix;
};
exports.TranslateMatrix = TranslateMatrix;
//# sourceMappingURL=TranslateMatrix.js.map