CHGenerator/WebsiteGenerator/Files/ImageOutput.swift

import Foundation

struct ImageOutput: Hashable {

    let source: String

    let width: Int

    let desiredHeight: Int?

    var ratio: Float? {
        guard let desiredHeight = desiredHeight else {
            return nil
        }
        return Float(desiredHeight) / Float(width)
    }

    func hasSimilarRatio(as other: ImageOutput) -> Bool {
        guard let other = other.ratio, let ratio = ratio else {
            return true
        }
        return abs(other - ratio) < 0.1
    }
}