Line.rotate allows you to rotate a line by the given amount around its center point.

Author: photonstorm

README.md

@@ -307,6 +307,7 @@ Version 2.4 - "Katar" - in dev
 * Line.random will return a random point from anywhere on the Line segment.
 * Ellipse.random will return a uniformly distributed random point from anywhere within the ellipse.
 * Rectangle.random will return a uniformly distributed random point from anywhere within the rectangle.
+* Line.rotate allows you to rotate a line by the given amount around its center point.
 
 ### Updates
 

src/geom/Line.js

@@ -102,6 +102,30 @@ Phaser.Line.prototype = {
 
     },
 
+    /**
+    * Rotates the line by the amount specified in `angle`.
+    * 
+    * Rotation takes place from the center of the line.
+    * 
+    * If you wish to rotate from either end see Line.start.rotate or Line.end.rotate.
+    * 
+    * @method Phaser.Line#rotate
+    * @param {number} angle - The angle in radians (unless asDegrees is true) to rotate the line by.
+    * @param {boolean} [asDegrees=false] - Is the given angle in radians (false) or degrees (true)?
+    * @return {Phaser.Line} This line object
+    */
+    rotate: function (angle, asDegrees) {
+
+        var x = this.start.x;
+        var y = this.start.y;
+
+        this.start.rotate(this.end.x, this.end.y, angle, asDegrees, this.length);
+        this.end.rotate(x, y, angle, asDegrees, this.length);
+
+        return this;
+
+    },
+
     /**
     * Checks for intersection between this line and another Line.
     * If asSegment is true it will check for segment intersection. If asSegment is false it will check for line intersection.

src/geom/Point.js

@@ -308,7 +308,7 @@ Phaser.Point.prototype = {
     * @param {number} x - The x coordinate of the anchor point.
     * @param {number} y - The y coordinate of the anchor point.
     * @param {number} angle - The angle in radians (unless asDegrees is true) to rotate the Point to.
-    * @param {boolean} asDegrees - Is the given rotation in radians (false) or degrees (true)?
+    * @param {boolean} [asDegrees=false] - Is the given angle in radians (false) or degrees (true)?
     * @param {number} [distance] - An optional distance constraint between the Point and the anchor.
     * @return {Phaser.Point} The modified point object.
     */
@@ -797,7 +797,7 @@ Phaser.Point.normalize = function (a, out) {
 * @param {number} x - The x coordinate of the anchor point
 * @param {number} y - The y coordinate of the anchor point
 * @param {number} angle - The angle in radians (unless asDegrees is true) to rotate the Point by.
-* @param {boolean} [asDegrees=false] - Is the given angle to rotate by in radians (false) or degrees (true)?
+* @param {boolean} [asDegrees=false] - Is the given angle in radians (false) or degrees (true)?
 * @param {number} [distance] - An optional distance constraint between the Point and the anchor.
 * @return {Phaser.Point} The modified point object.
 */

typescript/phaser.d.ts

@@ -1988,6 +1988,7 @@ declare module Phaser {
         pointOnSegment(x: number, y: number): boolean;
         random(out?: Phaser.Point): Phaser.Point;
         reflect(line: Phaser.Line): number;
+        rotate(angle: number, asDegrees?: boolean): Phaser.Line;
         setTo(x1?: number, y1?: number, x2?: number, y2?: number): Phaser.Line;
 
     }