zeropivot / vector

Vector

A DragonRuby GTK Library to work with vector (2D or 3D)

... work in progress ...

Methods

add(Vector) -> new Vector

Add a Vector

a = Vector.new(2, 1)
b = Vector.new(5, 2)
c = a.add b       # => c = {x: 7, y: 2, z: 0 }

sub(Vector) -> new Vector

Substract a Vector

a = Vector.new(2, 1, 1)
b = Vector.new(5, 2)
c = a.sub b       # => c = {x: -3, y: -1, z: 1 }

mult(Number) -> new Vector

Multiplies by a scalar

a = Vector.new(6, 2)
c = a.mult 3      # => c = {x: 18, y: 6, z: 0 }

div(Number) -> new Vector

Divide by a scalar Return nil if scalar = 0

a = Vector.new(6, 2, 1.5)
c = a.div 2       # => c = {x: 3, y: 1, z: 0.725 }

dot(Vector) -> Number

Make the dot product of two vectors

a = Vector.new(2 ,1 ,0)
b = Vector.new(1, 3)
c = a.dot b       # => c = 6

cross(Vector) -> new Vector

Return the cross products of vectors

mag -> Number

Return the magnitude of the vector

a = Vector.new(3, 4)
c = a.mag         # => c = 5

mag_squared -> Number

Return the squared magnitude of the vector (faster than mag)

a = Vector.new(3, 4)
c = a.mag_squared         # => c = 25

dir -> Number

Return, in radians, the direction (heading) of a vector

set!(x, y, z) -> Vector

Set the value of the vector to x, y, z

a = Vector.new(3, 1, 4)
a.set!(1, 5, 9)
puts a # => {x: 1, y: 5, z: 9}

dist(Vector) -> Number

Return the distance between two points(as vectors)