mat64

Documentation

Overview

Package mat64 provides a type for representing and manipulating a 4x4 matrix of float64.

Index

• Variables
• type Matrix
  • func Mul(m1, m2 Matrix) Matrix
  • func (m Matrix) Rotate(angle float64, axis vec64.Vector) Matrix
  • func (m Matrix) Scale(scale vec64.Vector) Matrix
  • func (m Matrix) String() string
  • func (m Matrix) Transform(u vec64.Vector) (v vec64.Vector)
  • func (m Matrix) Translate(v vec64.Vector) Matrix
  • func (m Matrix) Transpose() Matrix

Variables

var Identity = Matrix{
	{1, 0, 0, 0},
	{0, 1, 0, 0},
	{0, 0, 1, 0},
	{0, 0, 0, 1},
}

Identity can be multiplied by another matrix to produce the same matrix.

Types

type Matrix

type Matrix [4]vec64.Vector

Matrix holds a 4x4 matrix. Each vector is a column of the matrix.

func Mul

func Mul(m1, m2 Matrix) Matrix

Mul multiplies m1 by m2.

func (Matrix) Rotate

func (m Matrix) Rotate(angle float64, axis vec64.Vector) Matrix

Rotate post-multiplies a rotation around an axis. The angle is in radians and the axis will be normalized.

func (Matrix) Scale

func (m Matrix) Scale(scale vec64.Vector) Matrix

Scale post-multiplies a scale and returns the result.

func (Matrix) String

func (m Matrix) String() string

func (Matrix) Transform

func (m Matrix) Transform(u vec64.Vector) (v vec64.Vector)

Transform multiplies m by u.

func (Matrix) Translate

func (m Matrix) Translate(v vec64.Vector) Matrix

Translate post-multiplies a translation by v and returns the result.

func (Matrix) Transpose

func (m Matrix) Transpose() Matrix

Transpose performs a matrix transposition.