Cartesian4

Members

w :Number

The W component.

Default Value:

• 0.0

x :Number

The X component.

Default Value:

• 0.0

y :Number

The Y component.

Default Value:

• 0.0

z :Number

The Z component.

Default Value:

• 0.0

<static> UNIT_W

An immutable Cartesian4 instance initialized to (0.0, 0.0, 0.0, 1.0).

<static> UNIT_X

An immutable Cartesian4 instance initialized to (1.0, 0.0, 0.0, 0.0).

<static> UNIT_Y

An immutable Cartesian4 instance initialized to (0.0, 1.0, 0.0, 0.0).

<static> UNIT_Z

An immutable Cartesian4 instance initialized to (0.0, 0.0, 1.0, 0.0).

<static> ZERO

An immutable Cartesian4 instance initialized to (0.0, 0.0, 0.0, 0.0).

Methods

abs

Computes the absolute value of this Cartesian.

Parameters:

Name	Type	Argument	Description
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

add

Computes the componentwise sum of this Cartesian and the provided Cartesian.

Parameters:

Name	Type	Argument	Description
right	Cartesian4		The right hand side Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

clone

Duplicates this Cartesian4 instance.

Parameters:

Name	Type	Argument	Description
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

divideByScalar

Divides this Cartesian componentwise by the provided scalar.

Parameters:

Name	Type	Argument	Description
scalar	Number		The scalar to divide by.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : scalar is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

dot

Computes the dot (scalar) product of this Cartesian and a supplied cartesian.

Parameters:

Name	Type	Description
right	Cartesian4	The right hand side Cartesian.

Throws:

DeveloperError : right is required.

Returns:

Number The dot product.

equals

Compares this Cartesian against the provided Cartesian componentwise and returns true if they are equal, false otherwise.

Parameters:

Name	Type	Argument	Description
right	Cartesian4	<optional>	The right hand side Cartesian.

Returns:

Boolean true if they are equal, false otherwise.

equalsEpsilon

Compares this Cartesian against the provided Cartesian componentwise and returns true if they are within the provided epsilon, false otherwise.

Parameters:

Name	Type	Argument	Description
right	Cartesian4	<optional>	The right hand side Cartesian.
epsilon	Number		The epsilon to use for equality testing.

Throws:

DeveloperError : epsilon is required and must be a number.

Returns:

Boolean true if they are within the provided epsilon, false otherwise.

getMaximumComponent

Computes the value of the maximum component for this Cartesian.

Returns:

Number The value of the maximum component.

getMinimumComponent

Computes the value of the minimum component for this Cartesian.

Returns:

Number The value of the minimum component.

lerp

Computes the linear interpolation or extrapolation at t using this Cartesian and the provided cartesian. This cartesian is assumed to be t at 0.0.

Parameters:

Name	Type	Argument	Description
end			The value corresponding to t at 1.0.
t			The point along t at which to interpolate.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : end is required.
• DeveloperError : t is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

magnitude

Computes this Cartesian's magnitude (length).

Returns:

Number The magnitude.

magnitudeSquared

Computes this Cartesian's squared magnitude.

Returns:

Number The squared magnitude.

mostOrthogonalAxis

Returns the axis that is most orthogonal to the this Cartesian.

Parameters:

Name	Type	Argument	Description
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The most orthogonal axis.

multiplyByScalar

Multiplies this Cartesian componentwise by the provided scalar.

Parameters:

Name	Type	Argument	Description
scalar	Number		The scalar to multiply with.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : scalar is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

multiplyComponents

Computes the componentwise product of this Cartesian and the provided Cartesian.

Parameters:

Name	Type	Argument	Description
right	Cartesian4		The right hand side Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

negate

Negates this Cartesian.

Parameters:

Name	Type	Argument	Description
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

normalize

Computes the normalized form of this Cartesian.

Parameters:

Name	Type	Argument	Description
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

subtract

Computes the componentwise difference of this Cartesian and the provided Cartesian.

Parameters:

Name	Type	Argument	Description
right	Cartesian4		The right hand side Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

toString

Creates a string representing this Cartesian in the format '(x, y)'.

Returns:

String A string representing the provided Cartesian in the format '(x, y)'.

<static> abs

Computes the absolute value of the provided Cartesian.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian whose absolute value is to be computed.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> add

Computes the componentwise sum of two Cartesians.

Parameters:

Name	Type	Argument	Description
left	Cartesian4		The first Cartesian.
right	Cartesian4		The second Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : left is required.
• DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> clone

Duplicates a Cartesian4 instance.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian to duplicate.
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided. (Returns undefined if cartesian is undefined)

<static> distance

Computes the 4-space distance between two points

Parameters:

Name	Type	Description
left	Cartesian4	The first point to compute the distance from.
right	Cartesian4	The second point to compute the distance to.

Throws:

DeveloperError : left and right are required.

Returns:

Number The distance between two points.

Example

// Returns 1.0
var d = Cartesian4.distance(new Cartesian4(1.0, 0.0, 0.0, 0.0), new Cartesian4(2.0, 0.0, 0.0, 0.0));

<static> divideByScalar

Divides the provided Cartesian componentwise by the provided scalar.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian to be divided.
scalar	Number		The scalar to divide by.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : cartesian is required.
• DeveloperError : scalar is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> dot

Computes the dot (scalar) product of two Cartesians.

Parameters:

Name	Type	Description
left	Cartesian4	The first Cartesian.
right	Cartesian4	The second Cartesian.

Throws:

• DeveloperError : left is required.
• DeveloperError : right is required.

Returns:

Number The dot product.

<static> equals

Compares the provided Cartesians componentwise and returns true if they are equal, false otherwise.

Parameters:

Name	Type	Argument	Description
left	Cartesian4	<optional>	The first Cartesian.
right	Cartesian4	<optional>	The second Cartesian.

Returns:

Boolean true if left and right are equal, false otherwise.

<static> equalsEpsilon

Compares the provided Cartesians componentwise and returns true if they are within the provided epsilon, false otherwise.

Parameters:

Name	Type	Argument	Description
left	Cartesian4	<optional>	The first Cartesian.
right	Cartesian4	<optional>	The second Cartesian.
epsilon	Number		The epsilon to use for equality testing.

Throws:

DeveloperError : epsilon is required and must be a number.

Returns:

Boolean true if left and right are within the provided epsilon, false otherwise.

<static> fromArray

Creates a Cartesian4 from four consecutive elements in an array.

Parameters:

Name	Type	Argument	Default	Description
values	Array			The array whose four consecutive elements correspond to the x, y, z, and w components, respectively.
offset	Number	<optional>	0	The offset into the array of the first element, which corresponds to the x component.
result	Cartesian4	<optional>		The object onto which to store the result.

Throws:

• DeveloperError : values is required.
• DeveloperError : offset + 4 is greater than the length of the array.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

Example

// Create a Cartesian4 with (1.0, 2.0, 3.0, 4.0)
var v = [1.0, 2.0, 3.0, 4.0];
var p = Cartesian4.fromArray(v);

// Create a Cartesian4 with (1.0, 2.0, 3.0, 4.0) using an offset into an array
var v2 = [0.0, 0.0, 1.0, 2.0, 3.0, 4.0];
var p2 = Cartesian4.fromArray(v2, 2);

<static> fromElements

Creates a Cartesian4 instance from x, y, z and w coordinates.

Parameters:

Name	Type	Argument	Description
x	Number		The x coordinate.
y	Number		The y coordinate.
z	Number		The z coordinate.
w	Number		The w coordinate.
result	Cartesian4	<optional>	The object onto which to store the result.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> getMaximumComponent

Computes the value of the maximum component for the supplied Cartesian.

Parameters:

Name	Type	Description
The	Cartesian4	cartesian to use.

Throws:

DeveloperError : cartesian is required.

Returns:

Number The value of the maximum component.

<static> getMinimumComponent

Computes the value of the minimum component for the supplied Cartesian.

Parameters:

Name	Type	Description
The	Cartesian4	cartesian to use.

Throws:

DeveloperError : cartesian is required.

Returns:

Number The value of the minimum component.

<static> lerp

Computes the linear interpolation or extrapolation at t using the provided cartesians.

Parameters:

Name	Type	Argument	Description
start			The value corresponding to t at 0.0.
end			The value corresponding to t at 1.0.
t			The point along t at which to interpolate.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : start is required.
• DeveloperError : end is required.
• DeveloperError : t is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> magnitude

Computes the Cartesian's magnitude (length).

Parameters:

Name	Type	Description
cartesian	Cartesian4	The Cartesian instance whose magnitude is to be computed.

Throws:

DeveloperError : cartesian is required.

Returns:

Number The magnitude.

<static> magnitudeSquared

Computes the provided Cartesian's squared magnitude.

Parameters:

Name	Type	Description
cartesian	Cartesian4	The Cartesian instance whose squared magnitude is to be computed.

Throws:

DeveloperError : cartesian is required.

Returns:

Number The squared magnitude.

<static> mostOrthogonalAxis

Returns the axis that is most orthogonal to the provided Cartesian.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian on which to find the most orthogonal axis.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The most orthogonal axis.

<static> multiplyByScalar

Multiplies the provided Cartesian componentwise by the provided scalar.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian to be scaled.
scalar	Number		The scalar to multiply with.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : cartesian is required.
• DeveloperError : scalar is required and must be a number.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> multiplyComponents

Computes the componentwise product of two Cartesians.

Parameters:

Name	Type	Argument	Description
left	Cartesian4		The first Cartesian.
right	Cartesian4		The second Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : left is required.
• DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> negate

Negates the provided Cartesian.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian to be negated.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> normalize

Computes the normalized form of the supplied Cartesian.

Parameters:

Name	Type	Argument	Description
cartesian	Cartesian4		The Cartesian to be normalized.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.

<static> subtract

Computes the componentwise difference of two Cartesians.

Parameters:

Name	Type	Argument	Description
left	Cartesian4		The first Cartesian.
right	Cartesian4		The second Cartesian.
result	Cartesian4	<optional>	The object onto which to store the result.

Throws:

• DeveloperError : left is required.
• DeveloperError : right is required.

Returns:

Cartesian4 The modified result parameter or a new Cartesian4 instance if one was not provided.