imageutil

Documentation

Overview

Package imageutil implements some image utility functions.

Index

• func Border(r image.Rectangle, inset int) [4]image.Rectangle

Functions

func Border

func Border(r image.Rectangle, inset int) [4]image.Rectangle

Border returns four rectangles that together contain those points between r and r.Inset(inset). Visually:

00000000
00000000
11....22
11....22
11....22
33333333
33333333

The inset may be negative, in which case the points will be outside r.

Some of the returned rectangles may be empty. None of the returned rectangles will overlap.