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package tideui

import "os"

// CellAspectOf is CellSizeOf as the ratio an image is sized by: how many times

// taller a cell is than it is wide. Most fonts land near 2 (a 7x15 cell, an 8x17

// cell), which is what a zero here means: a pty with no emulator behind it, a

// window whose pixel size is not known yet, or a terminal that does not report

// pixels at all.

func CellAspectOf(file *os.File) float64 {

width, height := CellSizeOf(file)

if width <= 0 || height <= 0 {

return 0

}

return height / width

}