rectangle

Documentation

Overview

Package rectangle provides functions for manipulating image points and rectangles, particularly applicable to terminal user interfaces.

Index

• func Capture(r image.Rectangle, pt image.Point) image.Rectangle
• func Inset(r image.Rectangle, x, y int) image.Rectangle
• func MiddleCenter(inner, outer image.Rectangle) image.Rectangle
• func Outset(r image.Rectangle, x, y int) image.Rectangle
• func SplitHorizontal(r image.Rectangle) (upper, lower image.Rectangle)
• func SplitVertical(r image.Rectangle) (upper, lower image.Rectangle)

Functions

func Capture

func Capture(r image.Rectangle, pt image.Point) image.Rectangle

Capture returns the rectangle expanded to enclose a point.

func Inset

func Inset(r image.Rectangle, x, y int) image.Rectangle

Inset shrinks

func MiddleCenter

func MiddleCenter(inner, outer image.Rectangle) image.Rectangle

MiddleCenter finds a rectangle of the size of the inner rectangle but transposed into the vertical and horizontal center of the outer rectangle.

func Outset

func Outset(r image.Rectangle, x, y int) image.Rectangle

Outset grows

func SplitHorizontal

func SplitHorizontal(r image.Rectangle) (upper, lower image.Rectangle)

SplitHorizontal divides a rectangle into two stacked halves.

func SplitVertical

func SplitVertical(r image.Rectangle) (upper, lower image.Rectangle)

SplitVertical divides a rectangle into two adjacent halves.