Correct geometry clone argument types

Fixes #475

Thanks @bseiller

Author: samme

README.md

@@ -348,7 +348,7 @@ Written something cool in Phaser? Please tell us about it in the [forum][forum],
 * Fixed circular Arcade bodies sticking to each other during some collisions (#451).
 * Fixed a sprite with `input.enabled=false` triggering its onInputOut signal when the mouse leaves the game canvas (#454).
 * Fixed spelling error in API documentation (#458).
-* Fixed some TypeScript definitions (#442, #447, #455, #460, #462, #463, #469).
+* Fixed some TypeScript definitions (#442, #447, #455, #460, #462, #463, #469, #475).
 * The canvas now correctly scales inside a container div if using relative values for `width`/`height` in the [Phaser.Game](https://photonstorm.github.io/phaser-ce/Phaser.Game.html) constructor (#367). Make sure you give the container a [height](https://developer.mozilla.org/en-US/docs/Web/CSS/height).
 * Fixed State#loadUpdate being called once when no assets have been loaded (#468).
 * Fixed Debug#spriteInfo failing to show `sprite.name` as promised (#471).

src/geom/Circle.js

@@ -171,7 +171,7 @@ Phaser.Circle.prototype = {
     /**
     * Returns a new Circle object with the same values for the x, y, width, and height properties as this Circle object.
     * @method Phaser.Circle#clone
-    * @param {Phaser.Circle} output - Optional Circle object. If given the values will be set into the object, otherwise a brand new Circle object will be created and returned.
+    * @param {Phaser.Circle} [output] - Optional Circle object. If given the values will be set into the object, otherwise a brand new Circle object will be created and returned.
     * @return {Phaser.Circle} The cloned Circle object.
     */
     clone: function (output) {

src/geom/Ellipse.js

@@ -117,7 +117,7 @@ Phaser.Ellipse.prototype = {
     /**
     * Returns a new Ellipse object with the same values for the x, y, width, and height properties as this Ellipse object.
     * @method Phaser.Ellipse#clone
-    * @param {Phaser.Ellipse} output - Optional Ellipse object. If given the values will be set into the object, otherwise a brand new Ellipse object will be created and returned.
+    * @param {Phaser.Ellipse} [output] - Optional Ellipse object. If given the values will be set into the object, otherwise a brand new Ellipse object will be created and returned.
     * @return {Phaser.Ellipse} The cloned Ellipse object.
     */
     clone: function(output) {

src/geom/Line.js

@@ -353,7 +353,7 @@ Phaser.Line.prototype = {
     /**
      * Returns a new Line object with the same values for the start and end properties as this Line object.
      * @method Phaser.Line#clone
-     * @param {Phaser.Line} output - Optional Line object. If given the values will be set into the object, otherwise a brand new Line object will be created and returned.
+     * @param {Phaser.Line} [output] - Optional Line object. If given the values will be set into the object, otherwise a brand new Line object will be created and returned.
      * @return {Phaser.Line} The cloned Line object.
      */
     clone: function (output) {

src/geom/Polygon.js

@@ -111,7 +111,7 @@ Phaser.Polygon.prototype = {
      * This is a deep clone, the resulting copy contains new Phaser.Point objects
      *
      * @method Phaser.Polygon#clone
-     * @param {Phaser.Polygon} [output=(new Polygon)] - The polygon to update. If not specified a new polygon will be created.
+     * @param {Phaser.Polygon} [output=(new Phaser.Polygon)] - The polygon to update. If not specified a new polygon will be created.
      * @return {Phaser.Polygon} The cloned (`output`) polygon object.
      */
     clone: function (output) {

typescript/phaser.d.ts

@@ -768,7 +768,7 @@ declare module Phaser {
 
         circumference(): number;
         circumferencePoint(angle: number, asDegrees?: boolean, out?: Phaser.Point): Phaser.Point;
-        clone(output: Phaser.Circle): Phaser.Circle;
+        clone(output?: Phaser.Circle): Phaser.Circle;
         contains(x: number, y: number): boolean;
         copyFrom(source: any): Circle;
         copyTo(dest: any): any;
@@ -1129,7 +1129,7 @@ declare module Phaser {
 
         static constains(a: Phaser.Ellipse, x: number, y: number): boolean;
 
-        clone(output: Phaser.Ellipse): Phaser.Ellipse;
+        clone(output?: Phaser.Ellipse): Phaser.Ellipse;
         contains(x: number, y: number): boolean;
         copyFrom(source: any): Phaser.Ellipse;
         copyTo(dest: any): any;
@@ -2558,7 +2558,7 @@ declare module Phaser {
         static reflect(a: Phaser.Line, b: Phaser.Line): number;
 
         centerOn(x: number, y: number): Phaser.Line;
-        clone(output: Phaser.Line): Phaser.Line;
+        clone(output?: Phaser.Line): Phaser.Line;
         coordinatesOnLine(stepRate: number, results: any[]): any[];
         fromAngle(x: number, y: number, angle: number, length: number): Phaser.Line;
         fromPoints(start: any, end: any): Phaser.Line;
@@ -4248,7 +4248,7 @@ declare module Phaser {
         points: number[] | Phaser.Point[];
         type: number;
 
-        clone(output: Phaser.Polygon): Phaser.Polygon;
+        clone(output?: Phaser.Polygon): Phaser.Polygon;
         contains(x: number, y: number): boolean;
         flatten(): Phaser.Polygon;
         setTo(points: Phaser.Point[] | number[]): void;
@@ -4357,7 +4357,7 @@ declare module Phaser {
         ceil(): void;
         ceilAll(): void;
         centerOn(x: number, y: number): Phaser.Rectangle;
-        clone(output: Phaser.Rectangle): Phaser.Rectangle;
+        clone(output?: Phaser.Rectangle): Phaser.Rectangle;
         contains(x: number, y: number): boolean;
         containsRect(b: Phaser.Rectangle): boolean;
         copyFrom(source: any): Phaser.Rectangle;