Class Vec3

3-dimensional vector.

Index

Constructors

constructor

Properties

x y z BACK DOWN FORWARD LEFT ONE RIGHT UP ZERO

Constructors

constructor

new Vec3(x?, y?, z?): Vec3
Creates a new Vec3 object.
Parameters
- Optional x: number | number[] = 0
  The x value. Defaults to 0. If x is an array of length 3, the array will be used to populate all components.
- Optional y: number = 0
  The y value. Defaults to 0.
- Optional z: number = 0
  The z value. Defaults to 0.
Returns Vec3
Example
```
const v = new pc.Vec3(1, 2, 3);
```
- Defined in engine/src/core/math/vec3.js:38

Properties

x

x: number

The first component of the vector.

y

y: number

The second component of the vector.

z

z: number

The third component of the vector.

`Static` `Readonly` BACK

BACK: Vec3 = ...

A constant vector set to [0, 0, 1].

`Static` `Readonly` DOWN

DOWN: Vec3 = ...

A constant vector set to [0, -1, 0].

`Static` `Readonly` FORWARD

FORWARD: Vec3 = ...

A constant vector set to [0, 0, -1].

`Static` `Readonly` LEFT

LEFT: Vec3 = ...

A constant vector set to [-1, 0, 0].

`Static` `Readonly` ONE

ONE: Vec3 = ...

A constant vector set to [1, 1, 1].

`Static` `Readonly` RIGHT

RIGHT: Vec3 = ...

A constant vector set to [1, 0, 0].

`Static` `Readonly` UP

UP: Vec3 = ...

A constant vector set to [0, 1, 0].

`Static` `Readonly` ZERO

ZERO: Vec3 = ...

A constant vector set to [0, 0, 0].

Methods

add

add(rhs): Vec3
Adds a 3-dimensional vector to another in place.
Parameters
- rhs: Vec3
  The vector to add to the specified vector.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(10, 10, 10);
const b = new pc.Vec3(20, 20, 20);

a.add(b);

// Outputs [30, 30, 30]
console.log("The result of the addition is: " + a.toString());
```
- Defined in engine/src/core/math/vec3.js:64

add2

add2(lhs, rhs): Vec3
Adds two 3-dimensional vectors together and returns the result.
Parameters
- lhs: Vec3
  The first vector operand for the addition.
- rhs: Vec3
  The second vector operand for the addition.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(10, 10, 10);
const b = new pc.Vec3(20, 20, 20);
const r = new pc.Vec3();

r.add2(a, b);
// Outputs [30, 30, 30]

console.log("The result of the addition is: " + r.toString());
```
- Defined in engine/src/core/math/vec3.js:88

addScalar

addScalar(scalar): Vec3
Adds a number to each element of a vector.
Parameters
- scalar: number
  The number to add.
Returns Vec3
Self for chaining.
Example
```
const vec = new pc.Vec3(3, 4, 5);

vec.addScalar(2);

// Outputs [5, 6, 7]
console.log("The result of the addition is: " + vec.toString());
```
- Defined in engine/src/core/math/vec3.js:109

addScaled

addScaled(rhs, scalar): Vec3
Adds a 3-dimensional vector scaled by scalar value. Does not modify the vector being added.
Parameters
- rhs: Vec3
  The vector to add to the specified vector.
- scalar: number
  The number to multiply the added vector with.
Returns Vec3
Self for chaining.
Example
```
const vec = new pc.Vec3(1, 2, 3);

vec.addScaled(pc.Vec3.UP, 2);

// Outputs [1, 4, 3]
console.log("The result of the addition is: " + vec.toString());
```
- Defined in engine/src/core/math/vec3.js:131

ceil

ceil(src?): Vec3
Each element is rounded up to the next largest integer.
Parameters
- Optional src: Vec3 = ...
  The vector to ceil. If not set, the operation is done in place.
Returns Vec3
Self for chaining.
- Defined in engine/src/core/math/vec3.js:503

clone

clone(): Vec3
Returns an identical copy of the specified 3-dimensional vector.

Returns Vec3
A 3-dimensional vector containing the result of the cloning.
Example
```
const v = new pc.Vec3(10, 20, 30);
const vclone = v.clone();
console.log("The result of the cloning is: " + vclone.toString());
```
- Defined in engine/src/core/math/vec3.js:148

copy

copy(rhs): Vec3
Copies the contents of a source 3-dimensional vector to a destination 3-dimensional vector.
Parameters
- rhs: Vec3
  A vector to copy to the specified vector.
Returns Vec3
Self for chaining.
Example
```
const src = new pc.Vec3(10, 20, 30);
const dst = new pc.Vec3();

dst.copy(src);

console.log("The two vectors are " + (dst.equals(src) ? "equal" : "different"));
```
- Defined in engine/src/core/math/vec3.js:167

cross

cross(lhs, rhs): Vec3
Returns the result of a cross product operation performed on the two specified 3-dimensional vectors.
Parameters
- lhs: Vec3
  The first 3-dimensional vector operand of the cross product.
- rhs: Vec3
  The second 3-dimensional vector operand of the cross product.
Returns Vec3
Self for chaining.
Example
```
const back = new pc.Vec3().cross(pc.Vec3.RIGHT, pc.Vec3.UP);

// Prints the Z axis (i.e. [0, 0, 1])
console.log("The result of the cross product is: " + back.toString());
```
- Defined in engine/src/core/math/vec3.js:188

distance

distance(rhs): number
Returns the distance between the two specified 3-dimensional vectors.
Parameters
- rhs: Vec3
  The second 3-dimensional vector to test.
Returns number
The distance between the two vectors.
Example
```
const v1 = new pc.Vec3(5, 10, 20);
const v2 = new pc.Vec3(10, 20, 40);
const d = v1.distance(v2);
console.log("The distance between v1 and v2 is: " + d);
```
- Defined in engine/src/core/math/vec3.js:215

div

div(rhs): Vec3
Divides a 3-dimensional vector by another in place.
Parameters
- rhs: Vec3
  The vector to divide the specified vector by.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(4, 9, 16);
const b = new pc.Vec3(2, 3, 4);

a.div(b);

// Outputs [2, 3, 4]
console.log("The result of the division is: " + a.toString());
```
- Defined in engine/src/core/math/vec3.js:236

div2

div2(lhs, rhs): Vec3
Divides one 3-dimensional vector by another and writes the result to the specified vector.
Parameters
- lhs: Vec3
  The dividend vector (the vector being divided).
- rhs: Vec3
  The divisor vector (the vector dividing the dividend).
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(4, 9, 16);
const b = new pc.Vec3(2, 3, 4);
const r = new pc.Vec3();

r.div2(a, b);
// Outputs [2, 3, 4]

console.log("The result of the division is: " + r.toString());
```
- Defined in engine/src/core/math/vec3.js:260

divScalar

divScalar(scalar): Vec3
Divides each element of a vector by a number.
Parameters
- scalar: number
  The number to divide by.
Returns Vec3
Self for chaining.
Example
```
const vec = new pc.Vec3(3, 6, 9);

vec.divScalar(3);

// Outputs [1, 2, 3]
console.log("The result of the division is: " + vec.toString());
```
- Defined in engine/src/core/math/vec3.js:281

dot

dot(rhs): number
Returns the result of a dot product operation performed on the two specified 3-dimensional vectors.
Parameters
- rhs: Vec3
  The second 3-dimensional vector operand of the dot product.
Returns number
The result of the dot product operation.
Example
```
const v1 = new pc.Vec3(5, 10, 20);
const v2 = new pc.Vec3(10, 20, 40);
const v1dotv2 = v1.dot(v2);
console.log("The result of the dot product is: " + v1dotv2);
```
- Defined in engine/src/core/math/vec3.js:301

equals

equals(rhs): boolean
Reports whether two vectors are equal.
Parameters
- rhs: Vec3
  The vector to compare to the specified vector.
Returns boolean
True if the vectors are equal and false otherwise.
Example
```
const a = new pc.Vec3(1, 2, 3);
const b = new pc.Vec3(4, 5, 6);
console.log("The two vectors are " + (a.equals(b) ? "equal" : "different"));
```
- Defined in engine/src/core/math/vec3.js:315

equalsApprox

equalsApprox(rhs, epsilon?): boolean
Reports whether two vectors are equal using an absolute error tolerance.
Parameters
- rhs: Vec3
  The vector to be compared against.
- Optional epsilon: number = 1e-6
  The maximum difference between each component of the two vectors. Defaults to 1e-6.
Returns boolean
True if the vectors are equal and false otherwise.
Example
```
const a = new pc.Vec3();
const b = new pc.Vec3();
console.log("The two vectors are approximately " + (a.equalsApprox(b, 1e-9) ? "equal" : "different"));
```
- Defined in engine/src/core/math/vec3.js:331

floor

floor(src?): Vec3
Each element is set to the largest integer less than or equal to its value.
Parameters
- Optional src: Vec3 = ...
  The vector to floor. If not set, the operation is done in place.
Returns Vec3
Self for chaining.
- Defined in engine/src/core/math/vec3.js:490

length

length(): number
Returns the magnitude of the specified 3-dimensional vector.

Returns number
The magnitude of the specified 3-dimensional vector.
Example
```
const vec = new pc.Vec3(3, 4, 0);
const len = vec.length();
// Outputs 5
console.log("The length of the vector is: " + len);
```
- Defined in engine/src/core/math/vec3.js:347

lengthSq

lengthSq(): number
Returns the magnitude squared of the specified 3-dimensional vector.

Returns number
The magnitude of the specified 3-dimensional vector.
Example
```
const vec = new pc.Vec3(3, 4, 0);
const len = vec.lengthSq();
// Outputs 25
console.log("The length squared of the vector is: " + len);
```
- Defined in engine/src/core/math/vec3.js:361

lerp

lerp(lhs, rhs, alpha): Vec3
Returns the result of a linear interpolation between two specified 3-dimensional vectors.
Parameters
- lhs: Vec3
  The 3-dimensional to interpolate from.
- rhs: Vec3
  The 3-dimensional to interpolate to.
- alpha: number
  The value controlling the point of interpolation. Between 0 and 1, the linear interpolant will occur on a straight line between lhs and rhs. Outside of this range, the linear interpolant will occur on a ray extrapolated from this line.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(0, 0, 0);
const b = new pc.Vec3(10, 10, 10);
const r = new pc.Vec3();

r.lerp(a, b, 0);   // r is equal to a
r.lerp(a, b, 0.5); // r is 5, 5, 5
r.lerp(a, b, 1);   // r is equal to b
```
- Defined in engine/src/core/math/vec3.js:383

max

max(rhs): Vec3
Each element is assigned a value from rhs parameter if it is larger.
Parameters
- rhs: Vec3
  The 3-dimensional vector used as the source of elements to compare to.
Returns Vec3
Self for chaining.
- Defined in engine/src/core/math/vec3.js:542

min

min(rhs): Vec3
Each element is assigned a value from rhs parameter if it is smaller.
Parameters
- rhs: Vec3
  The 3-dimensional vector used as the source of elements to compare to.
Returns Vec3
Self for chaining.
- Defined in engine/src/core/math/vec3.js:529

mul

mul(rhs): Vec3
Multiplies a 3-dimensional vector to another in place.
Parameters
- rhs: Vec3
  The 3-dimensional vector used as the second multiplicand of the operation.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(2, 3, 4);
const b = new pc.Vec3(4, 5, 6);

a.mul(b);

// Outputs [8, 15, 24]
console.log("The result of the multiplication is: " + a.toString());
```
- Defined in engine/src/core/math/vec3.js:405

mul2

mul2(lhs, rhs): Vec3
Returns the result of multiplying the specified 3-dimensional vectors together.
Parameters
- lhs: Vec3
  The 3-dimensional vector used as the first multiplicand of the operation.
- rhs: Vec3
  The 3-dimensional vector used as the second multiplicand of the operation.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(2, 3, 4);
const b = new pc.Vec3(4, 5, 6);
const r = new pc.Vec3();

r.mul2(a, b);

// Outputs [8, 15, 24]
console.log("The result of the multiplication is: " + r.toString());
```
- Defined in engine/src/core/math/vec3.js:429

mulScalar

mulScalar(scalar): Vec3
Multiplies each element of a vector by a number.
Parameters
- scalar: number
  The number to multiply by.
Returns Vec3
Self for chaining.
Example
```
const vec = new pc.Vec3(3, 6, 9);

vec.mulScalar(3);

// Outputs [9, 18, 27]
console.log("The result of the multiplication is: " + vec.toString());
```
- Defined in engine/src/core/math/vec3.js:450

normalize

normalize(src?): Vec3
Returns this 3-dimensional vector converted to a unit vector in place. If the vector has a length of zero, the vector's elements will be set to zero.
Parameters
- Optional src: Vec3 = ...
  The vector to normalize. If not set, the operation is done in place.
Returns Vec3
Self for chaining.
Example
```
const v = new pc.Vec3(25, 0, 0);

v.normalize();

// Outputs [1, 0, 0]
console.log("The result of the vector normalization is: " + v.toString());
```
- Defined in engine/src/core/math/vec3.js:472

project

project(rhs): Vec3
Projects this 3-dimensional vector onto the specified vector.
Parameters
- rhs: Vec3
  The vector onto which the original vector will be projected on.
Returns Vec3
Self for chaining.
Example
```
const v = new pc.Vec3(5, 5, 5);
const normal = new pc.Vec3(1, 0, 0);

v.project(normal);

// Outputs [5, 0, 0]
console.log("The result of the vector projection is: " + v.toString());
```
- Defined in engine/src/core/math/vec3.js:563

round

round(src?): Vec3
Each element is rounded up or down to the nearest integer.
Parameters
- Optional src: Vec3 = ...
  The vector to round. If not set, the operation is done in place.
Returns Vec3
Self for chaining.
- Defined in engine/src/core/math/vec3.js:516

set

set(x, y, z): Vec3
Sets the specified 3-dimensional vector to the supplied numerical values.
Parameters
- x: number
  The value to set on the first component of the vector.
- y: number
  The value to set on the second component of the vector.
- z: number
  The value to set on the third component of the vector.
Returns Vec3
Self for chaining.
Example
```
const v = new pc.Vec3();
v.set(5, 10, 20);

// Outputs [5, 10, 20]
console.log("The result of the vector set is: " + v.toString());
```
- Defined in engine/src/core/math/vec3.js:587

sub

sub(rhs): Vec3
Subtracts a 3-dimensional vector from another in place.
Parameters
- rhs: Vec3
  The vector to subtract from the specified vector.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(10, 10, 10);
const b = new pc.Vec3(20, 20, 20);

a.sub(b);

// Outputs [-10, -10, -10]
console.log("The result of the subtraction is: " + a.toString());
```
- Defined in engine/src/core/math/vec3.js:609

sub2

sub2(lhs, rhs): Vec3
Subtracts two 3-dimensional vectors from one another and returns the result.
Parameters
- lhs: Vec3
  The first vector operand for the subtraction.
- rhs: Vec3
  The second vector operand for the subtraction.
Returns Vec3
Self for chaining.
Example
```
const a = new pc.Vec3(10, 10, 10);
const b = new pc.Vec3(20, 20, 20);
const r = new pc.Vec3();

r.sub2(a, b);

// Outputs [-10, -10, -10]
console.log("The result of the subtraction is: " + r.toString());
```
- Defined in engine/src/core/math/vec3.js:633

subScalar

subScalar(scalar): Vec3
Subtracts a number from each element of a vector.
Parameters
- scalar: number
  The number to subtract.
Returns Vec3
Self for chaining.
Example
```
const vec = new pc.Vec3(3, 4, 5);

vec.subScalar(2);

// Outputs [1, 2, 3]
console.log("The result of the subtraction is: " + vec.toString());
```
- Defined in engine/src/core/math/vec3.js:654

toString

toString(): string
Converts the vector to string form.

Returns string
The vector in string form.
Example
```
const v = new pc.Vec3(20, 10, 5);
// Outputs [20, 10, 5]
console.log(v.toString());
```
- Defined in engine/src/core/math/vec3.js:671

Class Vec3

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

Returns Vec3

Example

Properties

x

y

z

Static Readonly BACK

Static Readonly DOWN

Static Readonly FORWARD

Static Readonly LEFT

Static Readonly ONE

Static Readonly RIGHT

Static Readonly UP

Static Readonly ZERO

Methods

add

Parameters

Returns Vec3

Example

add2

Parameters

Returns Vec3

Example

addScalar

Parameters

Returns Vec3

Example

addScaled

Parameters

Returns Vec3

Example

ceil

Parameters

Returns Vec3

clone

Returns Vec3

Example

copy

Parameters

Returns Vec3

Example

cross

Parameters

Returns Vec3

Example

distance

Parameters

Returns number

Example

div

Parameters

Returns Vec3

Example

div2

Parameters

Returns Vec3

Example

divScalar

Parameters

Returns Vec3

Example

dot

Parameters

Returns number

Example

equals

Parameters

Returns boolean

Example

equalsApprox

Parameters

Returns boolean

`Static` `Readonly` BACK

`Static` `Readonly` DOWN

`Static` `Readonly` FORWARD

`Static` `Readonly` LEFT

`Static` `Readonly` ONE

`Static` `Readonly` RIGHT

`Static` `Readonly` UP

`Static` `Readonly` ZERO