palette

Documentation

Overview

Package palette implements useful color.Palette operations.

Index

• func Apply(img draw.Image, p color.Palette)
• func ApplyN(img draw.Image, n int)
• func New(img image.Image, n int) color.Palette

Functions

func Apply

func Apply(img draw.Image, p color.Palette)

Apply updates the image to only use colors from the palette. The alpha channel is always left untouched.

If the palette is empty, the image is not modified.

func ApplyN

func ApplyN(img draw.Image, n int)

ApplyN is shorthand for Apply(img, New(img, n)).

func New

func New(img image.Image, n int) color.Palette

New creates a palette of up to n colors from the image. All colors in the palette are fully opaque.

If n < 1, the palette is empty.