tui/geometry.go


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package tui

type Direction int
const (
	Down = iota
	Up
	Right
	Left
)

func (d Direction) axis() int {
	switch d {
	case Down, Up:
		return 1
	default:
		return 0
	}
}

func (d Direction) reverse() bool {
	switch d {
	case Down, Right:
		return false
	default:
		return true
	}
}

type rect struct {
	min [2]int
	max [2]int
}