grokify/mogo

package ratio

const (
    // Ratios are always width/height
    RatioTelevisionEarly float64 = 5 / 4 // 1.25/1
    RatioTelevision      float64 = 4 / 3 // 1.3/1
    RatioAcademy         float64 = 1.375 / 1.0
    RatioPhoto           float64 = 3 / 2
    RatioGolden          float64 = 1.6180 / 1
)

func WidthToHeight(width, ratio float64) float64 {
    return width / ratio
}

func HeightToWidth(height, ratio float64) float64 {
    return height * ratio
}