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use linear thumb resample filter
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@ -53,6 +53,8 @@
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- Added a default red colored Stderr output for the commands errors.
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You can now also silence individually custom commands errors using the `cobra.Command.SilenceErrors` field.
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- Slightly speed up (~10%) the thumbs generation by changing from cubic (`CatmullRom`) to bilinear (`Linear`) resampling filter (_the quality difference is very little_).
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## v0.20.0-rc3
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@ -425,25 +425,26 @@ func (s *System) CreateThumb(originalKey string, thumbKey, thumbSize string) err
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return decodeErr
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}
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r.Close()
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var thumbImg *image.NRGBA
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if width == 0 || height == 0 {
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// force resize preserving aspect ratio
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thumbImg = imaging.Resize(img, width, height, imaging.CatmullRom)
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thumbImg = imaging.Resize(img, width, height, imaging.Linear)
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} else {
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switch resizeType {
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case "f":
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// fit
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thumbImg = imaging.Fit(img, width, height, imaging.CatmullRom)
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thumbImg = imaging.Fit(img, width, height, imaging.Linear)
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case "t":
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// fill and crop from top
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thumbImg = imaging.Fill(img, width, height, imaging.Top, imaging.CatmullRom)
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thumbImg = imaging.Fill(img, width, height, imaging.Top, imaging.Linear)
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case "b":
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// fill and crop from bottom
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thumbImg = imaging.Fill(img, width, height, imaging.Bottom, imaging.CatmullRom)
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thumbImg = imaging.Fill(img, width, height, imaging.Bottom, imaging.Linear)
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default:
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// fill and crop from center
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thumbImg = imaging.Fill(img, width, height, imaging.Center, imaging.CatmullRom)
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thumbImg = imaging.Fill(img, width, height, imaging.Center, imaging.Linear)
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}
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}
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