Auto resize image to 768x64

Using http://github.com/nfnt/resize to resize banners

glyphbanner.go

@@ -7,6 +7,8 @@ import (
 	"os"
 	"strconv"
 
+	"github.com/nfnt/resize"
+
 	gim "github.com/ozankasikci/go-image-merge"
 )
 
@@ -85,10 +87,14 @@ func CreateBanner(portalhex string, savename string, vopt int) {
 	if err != nil {
 		panic(err)
 	}
+
+	// Resize banner 768x64
+	nuimg := resize.Resize(768, 64, rgba, resize.Lanczos3)
+
 	// save the output to png
 	fmt.Printf("Saving %s to %s\n", portalhex, savename)
 	file, err := os.Create(savename)
-	err = png.Encode(file, rgba)
+	err = png.Encode(file, nuimg)
 	if err != nil {
 		fmt.Println(err)
 	}