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bugfix: fix calculating width height from aspectratio #320

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bugfix: fix calculating width height from aspectratio #320

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9 changes: 7 additions & 2 deletions options.go
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Original file line number Diff line number Diff line change
Expand Up @@ -87,14 +87,19 @@ func transformByAspectRatio(params map[string]interface{}) (width, height int) {
}

if width != 0 {
height = width / aspectRatio["width"] * aspectRatio["height"]
height = calculateFromAspectRatio(width, aspectRatio["height"], aspectRatio["width"])
} else {
width = height / aspectRatio["height"] * aspectRatio["width"]
width = calculateFromAspectRatio(height, aspectRatio["width"], aspectRatio["height"])
}

return
}

func calculateFromAspectRatio(x int, ratioA int, ratioB int) int {
res := float32(x) * (float32(ratioA) / float32(ratioB))
return int(res)
}

func parseAspectRatio(val string) map[string]int {
val = strings.TrimSpace(strings.ToLower(val))
slicedVal := strings.Split(val, ":")
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