melonJS Class: ObservableVector2d

new ObservableVector2d(x, y, settings)

A Vector2d object that provide notification by executing the given callback when the vector is changed.

Parameters:

Name Type Argument Default Description

x Number <optional> 0 x value of the vector

y Number <optional> 0 y value of the vector

settings

Object

additional required parameters

Properties

Name	Type	Description
`onUpdate`	function	the callback to be executed when the vector is changed

Source:: observable_vector2.js, line 18

Extends

me.Vector2d

Classes

Error

Members

<static> x :Number

x value of the vector

Type:

Number

Source:: observable_vector2.js, line 23

<static> y :Number

y value of the vector

Type:

Number

Source:: observable_vector2.js, line 50

Methods

<static> abs() → {me.ObservableVector2d}

Update this vector values to absolute values

Source:: observable_vector2.js, line 194

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> add(v) → {me.ObservableVector2d}

Add the passed vector to this vector

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 133

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> ceil() → {me.ObservableVector2d}

Ceil the vector values

Source:: observable_vector2.js, line 277

Returns:

new me.ObservableVector2d

Type: me.ObservableVector2d

<static> ceilSelf() → {me.ObservableVector2d}

Ceil this vector values

Source:: observable_vector2.js, line 288

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> clamp(low, high) → {me.ObservableVector2d}

Clamp the vector value within the specified value range

Parameters:

Name	Type	Description
`low`	Number
`high`	Number

Source:: observable_vector2.js, line 205

Returns:

new me.ObservableVector2d

Type: me.ObservableVector2d

<static> clampSelf(low, high) → {me.ObservableVector2d}

Clamp this vector value within the specified value range

Parameters:

Name	Type	Description
`low`	Number
`high`	Number

Source:: observable_vector2.js, line 218

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> clone() → {me.ObservableVector2d}

return a clone copy of this vector

Source:: observable_vector2.js, line 425

Returns:

new me.ObservableVector2d

Type: me.ObservableVector2d

<static> copy(v) → {me.ObservableVector2d}

Copy the x,y values of the passed vector to this one

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 321

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> distance(v) → {Number}

return the distance between this vector and the passed one

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 413

Returns:

Type: Number

<static> div(value) → {me.ObservableVector2d}

Divide this vector values by the passed value

Parameters:

Name	Type	Description
`value`	Number

Source:: observable_vector2.js, line 182

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> dotProduct(v) → {Number}

return the dot product of this vector and the passed one

Parameters:

Name	Type	Description
`v`	me.Vector2d \| me.ObservableVector2d

Source:: observable_vector2.js, line 386

Returns:

The dot product.

Type: Number

<static> equals(v) → {Boolean}

return true if the two vectors are the same

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 333

Returns:

Type: Boolean

<static> floor() → {me.ObservableVector2d}

Floor the vector values

Source:: observable_vector2.js, line 255

Returns:

new me.ObservableVector2d

Type: me.ObservableVector2d

<static> floorSelf() → {me.ObservableVector2d}

Floor this vector values

Source:: observable_vector2.js, line 266

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> lerp(v, alpha) → {me.ObservableVector2d}

Linearly interpolate between this vector and the given one.

Parameters:

Name	Type	Description
`v`	me.Vector2d \| me.ObservableVector2d
`alpha`	Number	distance along the line (alpha = 0 will be this vector, and alpha = 1 will be the given one).

Source:: observable_vector2.js, line 398

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> maxV(v) → {me.ObservableVector2d}

Update this vector with the maximum value between this and the passed vector

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 243

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> minV(v) → {me.ObservableVector2d}

Update this vector with the minimum value between this and the passed vector

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 231

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> negate() → {me.ObservableVector2d}

Negate the vector values

Source:: observable_vector2.js, line 299

Returns:

new me.ObservableVector2d

Type: me.ObservableVector2d

<static> negateSelf() → {me.ObservableVector2d}

Negate this vector values

Source:: observable_vector2.js, line 310

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> normalize() → {me.ObservableVector2d}

normalize this vector (scale the vector so that its magnitude is 1)

Source:: observable_vector2.js, line 345

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> perp() → {me.ObservableVector2d}

change this vector to be perpendicular to what it was before.
(Effectively rotates it 90 degrees in a clockwise direction)

Source:: observable_vector2.js, line 360

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> rotate(angle) → {me.ObservableVector2d}

Rotate this vector (counter-clockwise) by the specified angle (in radians).

Parameters:

Name	Type	Description
`angle`	number	The angle to rotate (in radians)

Source:: observable_vector2.js, line 372

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> scale(x, y) → {me.ObservableVector2d}

Multiply this vector values by the given scalar

Parameters:

Name	Type	Argument	Default	Description
`x`	Number
`y`	Number	<optional>	x

Source:: observable_vector2.js, line 157

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> scaleV(v) → {me.ObservableVector2d}

Multiply this vector values by the passed vector

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 170

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> setCallback(onUpdate) → {me.ObservableVector2d}

set the callback to be executed when the vector is changed

Parameters:

Name	Type	Description
`onUpdate`	function	callback

Source:: observable_vector2.js, line 115

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> setMuted(x, y) → {me.ObservableVector2d}

set the vector value without triggering the callback

Parameters:

Name	Type	Description
`x`	Number	x value of the vector
`y`	Number	y value of the vector

Source:: observable_vector2.js, line 100

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> sub(v) → {me.ObservableVector2d}

Substract the passed vector to this vector

Parameters:

Name	Type	Description
`v`	me.ObservableVector2d

Source:: observable_vector2.js, line 145

Returns:

Reference to this object for method chaining

Type: me.ObservableVector2d

<static> toString() → {String}

convert the object to a string representation

Source:: observable_vector2.js, line 448

Returns:

Type: String

<static> toVector2d() → {me.Vector2d}

return a `me.Vector2d` copy of this `me.ObservableVector2d` object

Source:: observable_vector2.js, line 437

Returns:

new me.Vector2d

Type: me.Vector2d