Graphic Magic

GraphicsMagic

• gm main site
• gm golang bindings site

example:

package main

import (
    "flag"
    "github.com/gographics/gmagick"
)

func resize(orig string, dest string) {
    mw := gmagick.NewMagickWand()
    defer mw.Destroy()
    mw.ReadImage(orig)
    filter := gmagick.FILTER_LANCZOS
    w := mw.GetImageWidth()
    h := mw.GetImageHeight()
    mw.ResizeImage(w/2, h/2, filter, 1)
    mw.WriteImage(dest)
}

func main() {
    f := flag.String("from", "", "original image file ...")
    t := flag.String("to", "", "target file ...")
    flag.Parse()

    gmagick.Initialize()
    defer gmagick.Terminate()

    resize(*f, *t)
}

so the command to use would be: thisProgram -from <somefile.jpg> -to <newfile.jpg>