UWP Asset Generator

main.go

package main

import (
	"fmt"

	"gopkg.in/gographics/imagick.v2/imagick"
)

type asset struct {
	size   float32
	scales []float32
}

func main() {

	imagick.Initialize()
	defer imagick.Terminate()

	scales := []float32{1, 1.25, 1.5, 2, 4}

	tileBaseSizes := []float32{44, 100, 150}
	for _, baseSize := range tileBaseSizes {
		for _, scale := range scales {
			outfile := fmt.Sprintf("Square%dx%dLogo.scale-%d.png", uint(baseSize), uint(baseSize), uint(scale*100))
			size := round(baseSize * scale)
			createAsset("tile.png", outfile, size, size)
		}
	}
	for _, scale := range scales {
		outfile := fmt.Sprintf("SmallTile.scale-%d.png", uint(scale*100))
		size := round(71 * scale)
		createAsset("tile.png", outfile, size, size)
	}

	targetSizes := []uint{16, 24, 32, 48, 256}
	for _, size := range targetSizes {
		outfile := fmt.Sprintf("Square44x44Logo.targetsize-%d.png", size)
		createAsset("tile.png", outfile, size, size)
	}

	for _, size := range targetSizes {
		outfile := fmt.Sprintf("Square44x44Logo.altform-unplated_targetsize-%d.png", size)
		createAsset("unplated.png", outfile, size, size)
	}

	for _, scale := range scales {
		size := uint(310.0 * scale)
		outfile := fmt.Sprintf("LargeTile.scale-%d.png", uint(scale*100))
		createAsset("large.png", outfile, size, size)
	}

	for _, scale := range scales {
		width := round(310.0 * scale)
		height := round(150.0 * scale)
		outfile := fmt.Sprintf("Wide%dx%dLogo.scale-%d.png", 310, 150, uint(scale*100))
		createAsset("wide.png", outfile, width, height)
	}

}

func round(f float32) uint {
	return uint(f + 0.5)
}

func createAsset(infile, outfile string, width, height uint) {
	mw := imagick.NewMagickWand()

	err := mw.ReadImage(infile)
	if err != nil {
		panic(err)
	}

	err = mw.ResizeImage(width, height, imagick.FILTER_LANCZOS, 1)
	if err != nil {
		panic(err)
	}

	fmt.Println("Generating", outfile)

	err = mw.WriteImage(outfile)
	if err != nil {
		panic(err)
	}
}