upath

Documentation

Overview

Package upath implements operations on slices of image.Points.

Index

• func Distance(start, end image.Point) float64
• func DistanceToLine(point, line1, line2 image.Point) float64
• func Lerp(fac float64, start, end []image.Point) []image.Point
• func MultiLerp(fac float64, stages ...[]image.Point) []image.Point
• func P(data ...int) []image.Point
• func Translate(delta image.Point, path []image.Point)

Functions

func Distance

func Distance(start, end image.Point) float64

Distance returns the distance between two points.

func DistanceToLine

func DistanceToLine(point, line1, line2 image.Point) float64

DistanceToLine calculates the distance from a point to a line which passes through points line1 and line2.

func Lerp

func Lerp(fac float64, start, end []image.Point) []image.Point

Lerp linearally interpolates between two paths. If the paths differ in length, the returned path will only be as long as the smaller one. This function will always return a new slice.

func MultiLerp

func MultiLerp(fac float64, stages ...[]image.Point) []image.Point

MultiLerp is like Lerp, but interpolates through several "stages". This function will always return a new slice. If no stages are provided, it will return nil.

func P

func P(data ...int) []image.Point

P creates a path fom a list of integers that form X-Y pairs.

func Translate

func Translate(delta image.Point, path []image.Point)

Translate adds delta to all points in path. This modifies the slice contents.