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https://github.com/photonstorm/phaser
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Docs for Phaser.Curves.Curve and Phaser.Curves.Path
And whitespace
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samme
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2 changed files with 60 additions and 40 deletions
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@ -20,7 +20,7 @@ var Vector2 = require('../math/Vector2');
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* @constructor
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* @since 3.0.0
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*
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* @param {string} type - [description]
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* @param {string} type - The curve type.
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*/
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var Curve = new Class({
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@ -78,7 +78,7 @@ var Curve = new Class({
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this.needsUpdate = true;
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/**
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* [description]
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* For a curve on a Path, `false` means the Path will ignore this curve.
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*
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* @name Phaser.Curves.Curve#active
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* @type {boolean}
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@ -187,7 +187,7 @@ var Curve = new Class({
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},
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/**
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* [description]
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* Get a point at the end of the curve.
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*
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* @method Phaser.Curves.Curve#getEndPoint
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* @since 3.0.0
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@ -209,7 +209,7 @@ var Curve = new Class({
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* @method Phaser.Curves.Curve#getLength
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* @since 3.0.0
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*
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* @return {number} [description]
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* @return {number} The total length of the curve.
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*/
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getLength: function ()
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{
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@ -220,14 +220,22 @@ var Curve = new Class({
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/**
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* Get list of cumulative segment lengths
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* Get a list of cumulative segment lengths.
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*
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* These lengths are
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*
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* - [0] 0
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* - [1] The first segment
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* - [2] The first and second segment
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* - ...
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* - [divisions] All segments
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*
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* @method Phaser.Curves.Curve#getLengths
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* @since 3.0.0
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*
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* @param {integer} [divisions] - [description]
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* @param {integer} [divisions] - The number of divisions or segments.
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*
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* @return {number[]} [description]
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* @return {number[]} An array of cumulative lengths.
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*/
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getLengths: function (divisions)
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{
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@ -268,17 +276,17 @@ var Curve = new Class({
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// - u [0 .. 1]
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/**
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* [description]
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* Get a point at a relative position on the curve, by arc length.
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*
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* @method Phaser.Curves.Curve#getPointAt
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* @since 3.0.0
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*
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* @generic {Phaser.Math.Vector2} O - [out,$return]
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*
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* @param {number} u - [description]
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* @param {Phaser.Math.Vector2} [out] - [description]
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* @param {number} u - The relative position, [0..1].
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* @param {Phaser.Math.Vector2} [out] - A point to store the result in.
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*
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* @return {Phaser.Math.Vector2} [description]
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* @return {Phaser.Math.Vector2} The point.
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*/
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getPointAt: function (u, out)
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{
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@ -290,13 +298,23 @@ var Curve = new Class({
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// Get sequence of points using getPoint( t )
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/**
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* [description]
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* Get a sequence of evenly spaced points from the curve.
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*
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* You can pass `divisions`, `stepRate`, or neither.
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*
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* The number of divisions will be
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*
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* 1. `divisions`, if `divisions` > 0; or
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* 2. `this.getLength / stepRate`, if `stepRate` > 0; or
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* 3. `this.defaultDivisions`
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*
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* `1 + divisions` points will be returned.
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*
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* @method Phaser.Curves.Curve#getPoints
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* @since 3.0.0
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*
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* @param {integer} divisions - The number of evenly spaced points from the curve to return. If falsy, step param will be used to calculate the number of points.
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* @param {number} step - Step between points. Used to calculate the number of points to return when divisions is falsy. Ignored if divisions is positive.
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* @param {integer} [divisions] - The number of divisions to make.
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* @param {number} [stepRate] - The curve distance between points, implying `divisions`.
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* @param {(array|Phaser.Math.Vector2[])} [out] - An optional array to store the points in.
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*
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* @return {(array|Phaser.Math.Vector2[])} An array of Points from the curve.
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@ -327,16 +345,16 @@ var Curve = new Class({
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},
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/**
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* [description]
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* Get a random point from the curve.
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*
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* @method Phaser.Curves.Curve#getRandomPoint
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* @since 3.0.0
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*
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* @generic {Phaser.Math.Vector2} O - [out,$return]
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*
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* @param {Phaser.Math.Vector2} [out] - [description]
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* @param {Phaser.Math.Vector2} [out] - A point object to store the result in.
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*
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* @return {Phaser.Math.Vector2} [description]
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* @return {Phaser.Math.Vector2} The point.
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*/
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getRandomPoint: function (out)
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{
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@ -348,16 +366,18 @@ var Curve = new Class({
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// Get sequence of points using getPointAt( u )
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/**
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* [description]
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* Get a sequence of equally spaced points (by arc distance) from the curve.
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*
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* `1 + divisions` points will be returned.
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*
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* @method Phaser.Curves.Curve#getSpacedPoints
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* @since 3.0.0
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*
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* @param {integer} [divisions] - The number of evenly spaced points from the curve to return. If falsy, step param will be used to calculate the number of points.
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* @param {number} [step] - Step between points. Used to calculate the number of points to return when divisions is falsy. Ignored if divisions is positive.
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* @param {integer} [divisions=this.defaultDivisions] - The number of divisions to make.
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* @param {number} [stepRate] - Step between points. Used to calculate the number of points to return when divisions is falsy. Ignored if divisions is positive.
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* @param {(array|Phaser.Math.Vector2[])} [out] - An optional array to store the points in.
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*
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* @return {Phaser.Math.Vector2[]} [description]
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* @return {Phaser.Math.Vector2[]} An array of points.
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*/
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getSpacedPoints: function (divisions, stepRate, out)
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{
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@ -387,16 +407,16 @@ var Curve = new Class({
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},
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/**
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* [description]
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* Get a point at the start of the curve.
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*
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* @method Phaser.Curves.Curve#getStartPoint
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* @since 3.0.0
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*
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* @generic {Phaser.Math.Vector2} O - [out,$return]
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*
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* @param {Phaser.Math.Vector2} [out] - [description]
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* @param {Phaser.Math.Vector2} [out] - A point to store the result in.
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*
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* @return {Phaser.Math.Vector2} [description]
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* @return {Phaser.Math.Vector2} The point.
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*/
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getStartPoint: function (out)
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{
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@ -406,7 +426,7 @@ var Curve = new Class({
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},
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/**
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* Returns a unit vector tangent at t
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* Get a unit vector tangent at a relative position on the curve.
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* In case any sub curve does not implement its tangent derivation,
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* 2 points a small delta apart will be used to find its gradient
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* which seems to give a reasonable approximation
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@ -416,8 +436,8 @@ var Curve = new Class({
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*
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* @generic {Phaser.Math.Vector2} O - [out,$return]
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*
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* @param {number} t - [description]
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* @param {Phaser.Math.Vector2} [out] - [description]
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* @param {number} t - The relative position on the curve, [0..1].
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* @param {Phaser.Math.Vector2} [out] - A vector to store the result in.
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*
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* @return {Phaser.Math.Vector2} Vector approximating the tangent line at the point t (delta +/- 0.0001)
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*/
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@ -448,17 +468,17 @@ var Curve = new Class({
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},
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/**
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* [description]
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* Get a unit vector tangent at a relative position on the curve, by arc length.
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*
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* @method Phaser.Curves.Curve#getTangentAt
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* @since 3.0.0
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*
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* @generic {Phaser.Math.Vector2} O - [out,$return]
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*
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* @param {number} u - [description]
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* @param {Phaser.Math.Vector2} [out] - [description]
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* @param {number} u - The relative position on the curve, [0..1].
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* @param {Phaser.Math.Vector2} [out] - A vector to store the result in.
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*
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* @return {Phaser.Math.Vector2} [description]
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* @return {Phaser.Math.Vector2} The tangent vector.
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*/
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getTangentAt: function (u, out)
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{
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@ -573,10 +593,12 @@ var Curve = new Class({
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},
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/**
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* [description]
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* Calculate and cache the arc lengths.
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*
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* @method Phaser.Curves.Curve#updateArcLengths
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* @since 3.0.0
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*
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* @see Phaser.Curves.Curve#getLengths()
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*/
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updateArcLengths: function ()
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{
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@ -569,14 +569,12 @@ var Path = new Class({
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},
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/**
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* Returns the defined starting point of the Path.
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*
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* This is not necessarily equal to the starting point of the first Curve if it differs from {@link startPoint}.
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* Get a sequence of points on the path.
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*
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* @method Phaser.Curves.Path#getPoints
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* @since 3.0.0
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*
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* @param {integer} [divisions=12] - The number of points to divide the path in to.
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* @param {integer} [divisions=12] - The number of divisions per resolution per curve.
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*
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* @return {Phaser.Math.Vector2[]} An array of Vector2 objects that containing the points along the Path.
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*/
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