func main() {
flag.Parse()
mode, filepathIn, filepathOut := flag.Arg(0), flag.Arg(1), flag.Arg(2)
if mode == "" || filepathIn == "" || filepathOut == "" {
fmt.Fprintln(os.Stderr, "usage: go-pseudo-color mode in_path out_path")
fmt.Fprintln(os.Stderr, "mode = (linear, sigmoid, sin)")
_main()
return
}
file, err := os.Open(filepathIn)
if err != nil {
panic(err)
}
defer file.Close()
inPix := pixel.NewPixel(file)
var outPix *pixel.Pixel
switch mode {
case "linear":
outPix = inPix.Map(pseudo.ConvLinear)
case "sigmoid":
outPix = inPix.Map(pseudo.ConvSigmoid)
case "sin":
outPix = inPix.Map(pseudo.ConvSin)
default:
fmt.Fprintln(os.Stderr, "mode = (linear, sigmoid, sin)")
return
}
file, err = os.Create(filepathOut)
if err != nil {
panic(err)
}
defer file.Close()
outPix.Save(file)
}
// line.png 生成
func _main() {
pix := new(pixel.Pixel)
rect := image.Rect(0, 0, 500, 60)
pix.RGBA = image.NewRGBA(rect)
pix.Image = pix.RGBA.SubImage(rect)
pix = pix.Map(func(x int, _ int, _ color.Color) (c color.Color) {
l := uint16(0xFFFF * x / 500)
c = color.Gray16{l}
return
})
file, err := os.Create("fixture/line.png")
if err != nil {
panic(err)
}
defer file.Close()
pix.Save(file)
}