points

Documentation

Index

• func Area(pts []maths.Pt) (a float64)
• func Centroid(pts []maths.Pt) (center maths.Pt)
• func Paired(pts []maths.Pt) ([][2]maths.Pt, error)
• func Reverse(a []maths.Pt) []maths.Pt
• func RotatePos(pts []maths.Pt, pos int)
• func RotateToLowestsFirst(pts []maths.Pt)
• func SinArea(pts []maths.Pt) (a float64)
• func SlopeIntercept(pt1, pt2 maths.Pt) (m, b float64, defined bool)
• func SortAndUnique(pts []maths.Pt) []maths.Pt
• type ByXY
  • func (t ByXY) Len() int
  • func (t ByXY) Less(i, j int) bool
  • func (t ByXY) Sort()
  • func (t ByXY) Swap(i, j int)

Functions

func Area

func Area(pts []maths.Pt) (a float64)

func Centroid

func Centroid(pts []maths.Pt) (center maths.Pt)

func Paired

func Paired(pts []maths.Pt) ([][2]maths.Pt, error)

func Reverse

func Reverse(a []maths.Pt) []maths.Pt

func RotatePos

func RotatePos(pts []maths.Pt, pos int)

func RotateToLowestsFirst

func RotateToLowestsFirst(pts []maths.Pt)

func SinArea

func SinArea(pts []maths.Pt) (a float64)

func SlopeIntercept

func SlopeIntercept(pt1, pt2 maths.Pt) (m, b float64, defined bool)

func SortAndUnique

func SortAndUnique(pts []maths.Pt) []maths.Pt

SortAndUnique sorts the points using the X first then Y ordering and removes duplicates.

Types

type ByXY

type ByXY []maths.Pt

func (ByXY) Len

func (t ByXY) Len() int

func (ByXY) Less

func (t ByXY) Less(i, j int) bool

func (ByXY) Sort

func (t ByXY) Sort()

func (ByXY) Swap

func (t ByXY) Swap(i, j int)