Vector

Library for work with vectors.

Methods you can use:

• Eq
• Add
• Sub
• Dot
• Scalar
• Magnitude
• Normalize
• Angle
• Paraller
• Orthogonal

Simple usage

First get the package:

$ go get github.com/janczer/vector

Now you can add this library to import and use it:

package main

import (
	"fmt"
	"github.com/janczer/vector"
)

func main() {
	v := vector.New([]float64{1, 2, 3})
	v2 := vector.New([]float64{1, 2, 4})
	fmt.Println(v.Print()) //Vector: 1, 2, 3
	fmt.Println(v.Eq(v2))  //false
}

Eq

Method return true if vectors are equal:

	v := vector.New([]float64{1, 2, 3})
	v2 := vector.New([]float64{1, 2, 3})
	fmt.Println(v.Eq(v2))  //true

Add

This method add coordinates of two vectors, and return new Vector:

	v := vector.New([]float64{1, 2, 4})
	v2 := vector.New([]float64{1, 1, 3})
 	v3 := v.Add(v2) //1+1, 2+1, 4+3

Sub

Method subtract coordinates of two vectors, and return new Vector:

	v := vector.New([]float64{1, 2, 4})
	v2 := vector.New([]float64{1, 1, 3})
	v3 := v.Sub(v2) //1-1, 2-1, 4-3

Dot

Method multiply coordinates of two vectors, and return new Vector:

	v := vector.New([]float64{1, 2, 4})
	v2 := vector.New([]float64{1, 1, 3})
	v3 := v.Dot(v2) //1, 2, 12

Scalar

Method multiply each coordinate by number:

	v := vector.New([]float64{1, 2, 4})
	v2 := v.Scalar(3) //3, 6, 12

Magnitude

Method return magnitude of vector:

	v := vector.New([]float64{1, 2, 4})
	m := v.Magnitude() //4,5825..

Normalize

Method return new unit vector:

	v := vector.New([]float64{1, 2, 4})
	m := v.Normalize() // 1/4,5825, 2/4.5825, 4/4.5825

Angle

Method return angle between two vectors:

	v := vector.New([]float64{3, 0})
	v2 := vector.New([]float64{0, 3})
	a := v.Angle(v2, true) // 45

Paraller

Method return true if two vectors are paraller:

	v := vector.New([]float64{3, 0})
	v2 := vector.New([]float64{0, 3})
	a := v.Paraller(v2) // false

Orthogonal

Method return true if two vectors are orthogonal:

	v := vector.New([]float64{3, 0})
	v2 := vector.New([]float64{0, 3})
	a := v.Orthogonal(v2) // true