gl-vec2
Part of a fork of @toji's
gl-matrix split into smaller pieces: this
package contains glMatrix.vec2.
Usage
vec2 = require('gl-vec2')
Will load all of the module's functionality and expose it on a single object. Note that any of the methods may also be required directly from their files.
For example, the following are equivalent:
var scale = scalevar scale =
API
- add()
- ceil()
- clone()
- copy()
- create()
- cross()
- distance()
- dist()
- divide()
- div()
- dot()
- equals()
- exactEquals()
- floor()
- forEach()
- fromValues()
- inverse()
- length()
- len()
- lerp()
- limit()
- max()
- min()
- multiply()
- mul()
- negate()
- normalize()
- random()
- rotate()
- round()
- scale()
- scaleAndAdd()
- set()
- squaredDistance()
- sqrDist()
- squaredLength()
- sqrLen()
- subtract()
- sub()
- transformMat2()
- transformMat2d()
- transformMat3()
- transformMat4()
add(out:vec2, a:vec2, b:vec2)
Adds two vec2's
ceil(out:vec2, a:vec2)
Math.ceil the components of a vec2
clone(a:vec2)
Creates a new vec2 initialized with values from an existing vector
copy(out:vec2, a:vec2)
Copy the values from one vec2 to another
create()
Creates a new, empty vec2
cross(out:vec3, a:vec2, b:vec2)
Computes the cross product of two vec2's Note that the cross product must by definition produce a 3D vector
distance(a:vec2, b:vec2)
Calculates the euclidian distance between two vec2's. Aliased as dist.
divide(out:vec2, a:vec2, b:vec2)
Divides two vec2's. Aliased as div.
dot(a:vec2, b:vec2)
Calculates the dot product of two vec2's
equals(a:vec2, b:vec2)
Returns whether or not the vectors have approximately the same elements in the same position.
exactEquals(a:vec2, b:vec2)
Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
floor(out:vec2, a:vec2)
Math.floor the components of a vec2
forEach(a:Array, stride:Number, offset:Number, count:Number, fn:Function, [arg]:Object)
Perform some operation over an array of vec2s.
fromValues(x:Number, y:Number)
Creates a new vec2 initialized with the given values
inverse(out:vec2, a:vec2)
Returns the inverse of the components of a vec2
length(a:vec2)
Calculates the length of a vec2. Aliased as len.
lerp(out:vec2, a:vec2, b:vec2, t:Number)
Performs a linear interpolation between two vec2's
limit(out:vec2, a:vec2, max:Number)
Limit the magnitude of this vector to the value used for the max parameter
max(out:vec2, a:vec2, b:vec2)
Returns the maximum of two vec2's
min(out:vec2, a:vec2, b:vec2)
Returns the minimum of two vec2's
multiply(out:vec2, a:vec2, b:vec2)
Multiplies two vec2's. Aliased as mul.
negate(out:vec2, a:vec2)
Negates the components of a vec2
normalize(out:vec2, a:vec2)
Normalize a vec2
random(out:vec2, [scale]:Number)
Generates a random vector with the given scale
round(out:vec2, a:vec2)
Math.round the components of a vec2
rotate(out:vec2, a:vec2, angle:Number)
Rotates a vec2 by an angle (in radians)
scale(out:vec2, a:vec2, b:Number)
Scales a vec2 by a scalar number
scaleAndAdd(out:vec2, a:vec2, b:vec2, scale:Number)
Adds two vec2's after scaling the second operand by a scalar value
set(out:vec2, x:Number, y:Number)
Set the components of a vec2 to the given values
squaredDistance(a:vec2, b:vec2)
Calculates the squared euclidian distance between two vec2's. Aliased as sqrDist.
squaredLength(a:vec2)
Calculates the squared length of a vec2. Aliased as sqrLen.
subtract(out:vec2, a:vec2, b:vec2)
Subtracts vector b from vector a. Aliased as sub.
transformMat2(out:vec2, a:vec2, m:mat2)
Transforms the vec2 with a mat2
transformMat2d(out:vec2, a:vec2, m:mat2d)
Transforms the vec2 with a mat2d
transformMat3(out:vec2, a:vec2, m:mat3)
Transforms the vec2 with a mat3 3rd vector component is implicitly '1'
transformMat4(out:vec2, a:vec2, m:mat4)
Transforms the vec2 with a mat4 3rd vector component is implicitly '0' 4th vector component is implicitly '1'
License
zlib. See LICENSE.md for details.