matrix

Documentation

Index

• Constants
• Variables
• type Matrix
  • func CalcRotateAndTranslateTransformMatrix(r, dx, dy float64) Matrix
  • func CalcRotateTransformMatrix(rot float64, bb *types.Rectangle) Matrix
  • func CalcTransformMatrix(sx, sy, sin, cos, dx, dy float64) Matrix
  • func (m Matrix) Multiply(n Matrix) Matrix
  • func (m Matrix) String() string
  • func (m Matrix) Transform(p types.Point) types.Point

Constants

const (
	DegToRad = math.Pi / 180
	RadToDeg = 180 / math.Pi
)

Variables

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

Types

type Matrix

type Matrix [3][3]float64

func CalcRotateAndTranslateTransformMatrix

func CalcRotateAndTranslateTransformMatrix(r, dx, dy float64) Matrix

CalcRotateAndTranslateTransformMatrix returns a transform matrix that rotates and translates.

func CalcRotateTransformMatrix

func CalcRotateTransformMatrix(rot float64, bb *types.Rectangle) Matrix

CalcRotateTransformMatrix returns a transform matrix that rotates only.

func CalcTransformMatrix

func CalcTransformMatrix(sx, sy, sin, cos, dx, dy float64) Matrix

CalcTransformMatrix returns a full transform matrix.

func (Matrix) Multiply

func (m Matrix) Multiply(n Matrix) Matrix

Multiply calculates the product of two matrices.

func (Matrix) String

func (m Matrix) String() string

func (Matrix) Transform

func (m Matrix) Transform(p types.Point) types.Point

Transform applies m to p.