util

func Crush(filePath string) error

func CutEdge(uri string, position string, step uint) (image.Image, error)

func DoCrush(do bool, filePath string) error

func ImageDecode(r io.Reader) (image.Image, string, error)

func Info(uri string) (map[color.Color]int, error)

func Invert(uri string) (image.Image, error)

func IsDir(path string) (bool, error)

func OpenURI(uri string) (rc io.ReadCloser, err error)

func Resize(uri string, w, h uint) (image.Image, error)

func SaveImage(img image.Image, savePath string, imageType int) (err error)

func Transparent(uri string, red, green, blue uint32, transparentWhiteDirect bool) (image.Image, error)