tango.math.Vector

The vector is in $n$ dimension.

new tango.math.Vector(arr)

Builds new vector by coordinates array.

new tango.math.Vector(arr1, arr2)

Builds new vector by coordinates array of two point.

new tango.math.Vector(tango.math.Point, tango.math.Point)

Builds new vector by two tango.math.Point.

tango.math.Vector.norm(vec): number

Gets the length of the vec, that is $|\vec{X}|=\sqrt{\sum_{i=0}^{n-1} x_i^2}$.

tango.math.Vector.dot(v1, v2): number

Calculates the dot result of two vectors, that is $\vec{X}\cdot \vec{Y} = \sum_{i=0}^{n-1} x_i \cdot y_i$ .

tango.math.Vector.cos(v1, v2): number

Calculates the cos result of two vectors, that is $\frac{\vec{X}\cdot \vec{Y}}{|\vec{X}|\cdot |\vec{Y}|}$ .

norm(): number

Gets the length of the vec itself.

dot(that): number

Calculates the dot result of this and that.

cos(that): number

Calculates the cos result of this and that.