Methods
(static) add(a, b) → {Object}
Adds two vector like objects
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object |
- Source:
Returns:
a+b
- Type
- Object
(static) cwiseDiv(a, b) → {Object}
Divides two vector like objects component-wise
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object |
- Source:
Returns:
Component-wise division of a and b
- Type
- Object
(static) cwiseMult(a, b) → {Object}
Multiplies two vector like objects component-wise
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object |
- Source:
Returns:
Component-wise multiplication of a and b
- Type
- Object
(static) dot(a, b) → {Number}
Computes the dot product of two vector like objects
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object |
- Source:
Returns:
The dot product
- Type
- Number
(static) len(a) → {Number}
Computes the length of a vector like objects
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object |
- Source:
Returns:
The length
- Type
- Number
(static) len2(a) → {Number}
Computes the squared length of a vector like objects
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object |
- Source:
Returns:
The squared length
- Type
- Number
(static) lerp(a, b, t) → {Object}
Computes the linear interpolation (1-t)*a + t*b
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object | |
t |
Number |
- Source:
Returns:
The linearly interpolated vector
- Type
- Object
(static) new(x, y) → {Object}
Create an object that can be treated as a 2D vector
Parameters:
| Name | Type | Default | Description |
|---|---|---|---|
x |
Number | 0 | |
y |
Number | 0 |
- Source:
Returns:
A 2D vector
- Type
- Object
(static) normal2D(v) → {Object}
Computes the normal [-y,x] for the given vector [x,y]
Parameters:
| Name | Type | Description |
|---|---|---|
v |
Object | The input vector |
- Source:
Returns:
The normal
- Type
- Object
(static) normalize(v) → {Object}
Creates a new normalized vector
Parameters:
| Name | Type | Description |
|---|---|---|
v |
Object | The vector to normalized |
- Source:
Returns:
The normalized vector
- Type
- Object
(static) normalizeIfNotZero(v, eps) → {Object}
Creates a new normalized vector, if the vector is not zero, otherwise does not change the values
Parameters:
| Name | Type | Default | Description |
|---|---|---|---|
v |
Object | The vector to normalized | |
eps |
Number | 1e-10 | [1E-10] The epsilon to check whether a vector is approximately zero or not |
- Source:
Returns:
The normalized vector
- Type
- Object
(static) polar(r, alpha) → {Object}
Creates a 2D cartesian vector from its polar coordinates
Parameters:
| Name | Type | Description |
|---|---|---|
r |
Number | The radius |
alpha |
Number | The angle |
- Source:
Returns:
The vector
- Type
- Object
(static) rotate(v, alpha, ca, sa) → {Object}
Rotates a vector by a given angle
Parameters:
| Name | Type | Description |
|---|---|---|
v |
Object | The vector to rotate |
alpha |
Number | The angle around which to rotate |
ca |
Number | [Math.cos(alpha)] The cosine of alpha can be provided. If many points are rotated, this saves computing the cosine multiple times |
sa |
Number | [Math.sin(alpha)] he sine of alpha can be provided. If many points are rotated, this saves computing the sine multiple times |
- Source:
Returns:
The rotated vector
- Type
- Object
(static) scale(a, b) → {Object}
Adds a vector like object by a scalar
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Number |
- Source:
Returns:
a*v
- Type
- Object
(static) sub(a, b) → {Object}
Subtracts two vector like objects
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Object | |
b |
Object |
- Source:
Returns:
a+b
- Type
- Object
(static) vec2(x, y) → {Object}
Create an object that can be treated as a 2D vector
Parameters:
| Name | Type | Default | Description |
|---|---|---|---|
x |
Number | 0 | |
y |
Number | 0 |
- Source:
Returns:
A 2D vector
- Type
- Object