Infrastructure/imageproxy
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image transformation improvements

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- switch to disintegration/imaging library, which supports more of the
  transformations I want to add
- pass image through untouched if provided Options are empty
This commit is contained in:
Will Norris 2013-12-06 09:23:04 -08:00
parent fde104a7a1
commit 805aa606ca
1 changed files with 6 additions and 3 deletions
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9
transform/transform.go
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@ -7,14 +7,17 @@ import (
"image/gif" "image/gif"
"image/jpeg" "image/jpeg"
"image/png" "image/png"
"reflect"
"github.com/nfnt/resize" "github.com/disintegration/imaging"
"github.com/willnorris/go-imageproxy/data" "github.com/willnorris/go-imageproxy/data"
) )
var emptyOptions = new(data.Options)
// Transform the provided image. // Transform the provided image.
func Transform(img data.Image, opt *data.Options) (*data.Image, error) { func Transform(img data.Image, opt *data.Options) (*data.Image, error) {
if opt == nil { if opt == nil || reflect.DeepEqual(opt, emptyOptions) {
return &img, nil return &img, nil
} }
@ -26,7 +29,7 @@ func Transform(img data.Image, opt *data.Options) (*data.Image, error) {
// resize // resize
if opt.Width != 0 || opt.Height != 0 { if opt.Width != 0 || opt.Height != 0 {
m = resize.Resize(uint(opt.Width), uint(opt.Height), m, resize.Lanczos3) m = imaging.Fit(m, opt.Width, opt.Height, imaging.Lanczos)
} }
// encode image // encode image