Phaser.Point

new Point ( x, y)

A Point object represents a location in a two-dimensional coordinate system, where x represents the horizontal axis and y represents the vertical axis. The following code creates a point at (0,0): var myPoint = new Phaser.Point();You can also use them as 2D Vectors and you'll find different vector related methods in this class.

点对象表示二维坐标系中的位置,其中x表示水平轴,y表示垂直轴。以下代码在(0,0)处创建一个点:var myPoint = new Phaser.Point();您也可以将它们用作二维向量,在这个类中您将发现不同的向量相关方法。
Parameters:
Name Type Argument Default Description
x number <optional>
0

The horizontal position of this Point.

y number <optional>
0

The vertical position of this Point.

Source - geom/Point.js, line 18

Members

<readonly>type :number

The const type of this object.

Source - geom/Point.js, line 37

x :number

The x value of the point.

Source - geom/Point.js, line 26

y :number

The y value of the point.

Source - geom/Point.js, line 31

Methods

<static>add (a, b, out) → { Phaser.Point}

Adds the coordinates of two points together to create a new point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 491

<static>angle (a, b) → {number}

Returns the angle between two Point objects.

Parameters:
Name Type Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

Returns:
number-

The angle between the two Points.

Source - geom/Point.js, line 585

<static>centroid (points, out) → { Phaser.Point}

Calculates centroid (or midpoint) from an array of points. If only one point is provided, that point is returned.

Parameters:
Name Type Argument Description
points Array.< Phaser.Point>

The array of one or more points.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 832

<static>distance (a, b, round) → {number}

Returns the euclidian distance of this Point object to the given object (can be a Circle, Point or anything with x/y properties).

Parameters:
Name Type Argument Default Description
a object

The target object. Must have visible x and y properties that represent the center of the object.

b object

The target object. Must have visible x and y properties that represent the center of the object.

round boolean <optional>
false

Round the distance to the nearest integer.

Returns:
number-

The distance between this Point object and the destination Point object.

Source - geom/Point.js, line 684

<static>divide (a, b, out) → { Phaser.Point}

Divides the coordinates of two points to create a new point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 551

<static>equals (a, b) → {boolean}

Determines whether the two given Point objects are equal. They are considered equal if they have the same x and y values.

Parameters:
Name Type Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

Returns:
boolean-

A value of true if the Points are equal, otherwise false.

Source - geom/Point.js, line 571

<static>interpolate (a, b, f, out) → { Phaser.Point}

Interpolates the two given Points, based on the fvalue (between 0 and 1) and returns a new Point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

f number

The level of interpolation between the two points. Indicates where the new point will be, along the line between pt1 and pt2. If f=1, pt1 is returned; if f=0, pt2 is returned.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 634

<static>multiply (a, b, out) → { Phaser.Point}

Multiplies the coordinates of two points to create a new point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 531

<static>multiplyAdd (a, b, s, out) → { Phaser.Point}

Adds two 2D Points together and multiplies the result by the given scalar.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

s number

The scaling value.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 616

<static>negative (a, out) → { Phaser.Point}

Creates a negative Point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 600

<static>normalize (a, out) → { Phaser.Point}

Normalize (make unit length) a Point.

Parameters:
Name Type Argument Description
a Phaser.Point

The Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 764

<static>normalRightHand (a, out) → { Phaser.Point}

Right-hand normalize (make unit length) a Point.

Parameters:
Name Type Argument Description
a Phaser.Point

The Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 748

<static>parse (obj, xProp, yProp) → { Phaser.Point}

Parses an object for x and/or y properties and returns a new Phaser.Point with matching values. If the object doesn't contain those properties a Point with x/y of zero will be returned.

Parameters:
Name Type Argument Default Description
obj object

The object to parse.

xProp string <optional>
'x'

The property used to set the Point.x value.

yProp string <optional>
'y'

The property used to set the Point.y value.

Returns:

The new Point object.

Source - geom/Point.js, line 873

<static>perp (a, out) → { Phaser.Point}

Return a perpendicular vector (90 degrees rotation)

Parameters:
Name Type Argument Description
a Phaser.Point

The Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 652

<static>project (a, b, out) → { Phaser.Point}

Project two Points onto another Point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 700

<static>projectUnit (a, b, out) → { Phaser.Point}

Project two Points onto a Point of unit length.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 724

<static>rotate (a, x, y, angle, asDegrees, distance) → { Phaser.Point}

Rotates a Point object, or any object with exposed x/y properties, around the given coordinates by the angle specified. If the angle between the point and coordinates was 45 deg and the angle argument is 45 deg then the resulting angle will be 90 deg, as the angle argument is added to the current angle.

The distance allows you to specify a distance constraint for the rotation between the point and the coordinates. If none is given the distance between the two is calculated and used.

Parameters:
Name Type Argument Default Description
a Phaser.Point

The Point object to rotate.

x number

The x coordinate of the anchor point

y number

The y coordinate of the anchor point

angle number

The angle in radians (unless asDegrees is true) to rotate the Point by.

asDegrees boolean <optional>
false

Is the given angle in radians (false) or degrees (true)?

distance number <optional>

An optional distance constraint between the Point and the anchor.

Returns:

The modified point object.

Source - geom/Point.js, line 787

<static>rperp (a, out) → { Phaser.Point}

Return a perpendicular vector (-90 degrees rotation)

Parameters:
Name Type Argument Description
a Phaser.Point

The Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 668

<static>subtract (a, b, out) → { Phaser.Point}

Subtracts the coordinates of two points to create a new point.

Parameters:
Name Type Argument Description
a Phaser.Point

The first Point object.

b Phaser.Point

The second Point object.

out Phaser.Point <optional>

Optional Point to store the value in, if not supplied a new Point object will be created.

Returns:

The new Point object.

Source - geom/Point.js, line 511

add (x, y) → { Phaser.Point}

Adds the given x and y values to this Point.

Parameters:
Name Type Description
x number

The value to add to Point.x.

y number

The value to add to Point.y.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 106

angle (a, asDegrees) → {number}

Returns the angle between this Point object and another object with public x and y properties.

Parameters:
Name Type Argument Default Description
a Phaser.Point| any

The object to get the angle from this Point to.

asDegrees boolean <optional>
false

Is the given angle in radians (false) or degrees (true)?

Returns:
number-

The angle between the two objects.

Source - geom/Point.js, line 281

ceil () → { Phaser.Point}

Math.ceil() both the x and y properties of this Point.

Returns:

This Point object.

Source - geom/Point.js, line 463

clamp (min, max) → { Phaser.Point}

Clamps this Point object values to be between the given min and max.

Parameters:
Name Type Description
min number

The minimum value to clamp this Point to.

max number

The maximum value to clamp this Point to.

Returns:

This Point object.

Source - geom/Point.js, line 200

clampX (min, max) → { Phaser.Point}

Clamps the x value of this Point to be between the given min and max.

Parameters:
Name Type Description
min number

The minimum value to clamp this Point to.

max number

The maximum value to clamp this Point to.

Returns:

This Point object.

Source - geom/Point.js, line 170

clampY (min, max) → { Phaser.Point}

Clamps the y value of this Point to be between the given min and max

Parameters:
Name Type Description
min number

The minimum value to clamp this Point to.

max number

The maximum value to clamp this Point to.

Returns:

This Point object.

Source - geom/Point.js, line 185

clone ( output) → { Phaser.Point}

Creates a copy of the given Point.

Parameters:
Name Type Argument Description
output Phaser.Point <optional>

Optional Point object. If given the values will be set into this object, otherwise a brand new Point object will be created and returned.

Returns:

The new Point object.

Source - geom/Point.js, line 216

copyFrom (source) → { Phaser.Point}

Copies the x and y properties from any given object to this Point.

Parameters:
Name Type Description
source any

The object to copy from.

Returns:

This Point object.

Source - geom/Point.js, line 43

copyTo (dest) → {object}

Copies the x and y properties from this Point to any given object.

Parameters:
Name Type Description
dest any

The object to copy to.

Returns:
object-

The dest object.

Source - geom/Point.js, line 238

cross (a) → {number}

The cross product of this and another Point object.

Parameters:
Name Type Description
a Phaser.Point

The Point object to get the cross product combined with this Point.

Returns:
number-

The result.

Source - geom/Point.js, line 402

distance (dest, round) → {number}

Returns the distance of this Point object to the given object (can be a Circle, Point or anything with x/y properties)

Parameters:
Name Type Argument Description
dest object

The target object. Must have visible x and y properties that represent the center of the object.

round boolean <optional>

Round the distance to the nearest integer (default false).

Returns:
number-

The distance between this Point object and the destination Point object.

Source - geom/Point.js, line 254

divide (x, y) → { Phaser.Point}

Divides Point.x and Point.y by the given x and y values.

Parameters:
Name Type Description
x number

The value to divide Point.x by.

y number

The value to divide Point.x by.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 154

dot (a) → {number}

The dot product of this and another Point object.

Parameters:
Name Type Description
a Phaser.Point

The Point object to get the dot product combined with this Point.

Returns:
number-

The result.

Source - geom/Point.js, line 389

equals (a) → {boolean}

Determines whether the given objects x/y values are equal to this Point object.

Parameters:
Name Type Description
a Phaser.Point| any

The object to compare with this Point.

Returns:
boolean-

A value of true if the x and y points are equal, otherwise false.

Source - geom/Point.js, line 268

floor () → { Phaser.Point}

Math.floor() both the x and y properties of this Point.

Returns:

This Point object.

Source - geom/Point.js, line 451

getMagnitude () → {number}

Calculates the length of the Point object.

Returns:
number-

The length of the Point.

Source - geom/Point.js, line 321

getMagnitudeSq () → {number}

Calculates the length squared of the Point object.

Returns:
number-

The length ^ 2 of the Point.

Source - geom/Point.js, line 333

invert () → { Phaser.Point}

Inverts the x and y values of this Point

Returns:

This Point object.

Source - geom/Point.js, line 56

isZero () → {boolean}

Determine if this point is at 0,0.

Returns:
boolean-

True if this Point is 0,0, otherwise false.

Source - geom/Point.js, line 377

multiply (x, y) → { Phaser.Point}

Multiplies Point.x and Point.y by the given x and y values. Sometimes known as Scale.

Parameters:
Name Type Description
x number

The value to multiply Point.x by.

y number

The value to multiply Point.x by.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 138

normalize () → { Phaser.Point}

Alters the Point object so that its length is 1, but it retains the same direction.

Returns:

This Point object.

Source - geom/Point.js, line 358

normalRightHand () → { Phaser.Point}

Right-hand normalize (make unit length) this Point.

Returns:

This Point object.

Source - geom/Point.js, line 439

perp () → { Phaser.Point}

Make this Point perpendicular (90 degrees rotation)

Returns:

This Point object.

Source - geom/Point.js, line 415

rotate (x, y, angle, asDegrees, distance) → { Phaser.Point}

Rotates this Point around the x/y coordinates given to the desired angle.

Parameters:
Name Type Argument Default Description
x number

The x coordinate of the anchor point.

y number

The y coordinate of the anchor point.

angle number

The angle in radians (unless asDegrees is true) to rotate the Point to.

asDegrees boolean <optional>
false

Is the given angle in radians (false) or degrees (true)?

distance number <optional>

An optional distance constraint between the Point and the anchor.

Returns:

The modified point object.

Source - geom/Point.js, line 304

rperp () → { Phaser.Point}

Make this Point perpendicular (-90 degrees rotation)

Returns:

This Point object.

Source - geom/Point.js, line 427

set (x, y) → { Phaser.Point}

Sets the xand yvalues of this Point object to the given values. If you omit the yvalue then the xvalue will be applied to both, for example: Point.set(2)is the same as Point.set(2, 2)

Parameters:
Name Type Argument Description
x number

The horizontal value of this point.

y number <optional>

The vertical value of this point. If not given the x value will be used in its place.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 87

setMagnitude (magnitude) → { Phaser.Point}

Alters the length of the Point without changing the direction.

Parameters:
Name Type Description
magnitude number

The desired magnitude of the resulting Point.

Returns:

This Point object.

Source - geom/Point.js, line 345

setTo (x, y) → { Phaser.Point}

Sets the xand yvalues of this Point object to the given values. If you omit the yvalue then the xvalue will be applied to both, for example: Point.setTo(2)is the same as Point.setTo(2, 2)

Parameters:
Name Type Argument Description
x number

The horizontal value of this point.

y number <optional>

The vertical value of this point. If not given the x value will be used in its place.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 68

subtract (x, y) → { Phaser.Point}

Subtracts the given x and y values from this Point.

Parameters:
Name Type Description
x number

The value to subtract from Point.x.

y number

The value to subtract from Point.y.

Returns:

This Point object. Useful for chaining method calls.

Source - geom/Point.js, line 122

toString () → {string}

Returns a string representation of this object.

Returns:
string-

A string representation of the instance.

Source - geom/Point.js, line 475
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