imagex

func BuildAtlas ¶

func BuildAtlas(images []*image.RGBA, paddingX, paddingY int, allowRotation bool) (*image.RGBA, []geom.RectNode)

BuildAtlas generates an atlas image and returns it. It also returns info on how the rects have been packed

func CropTransparentBorders ¶

func CropTransparentBorders(sourceImage image.Image) (*image.RGBA, geom.Insets)

func FromBase64String ¶

func FromBase64String(base64String string) (image.Image, error)

func IsImageAreaEmpty ¶

func IsImageAreaEmpty(img image.Image, area geom.Rect) bool

Check if an area is full of transparent pixels

func IsImageEmpty ¶

func IsImageEmpty(img image.Image) bool

func MeasureTransparentInsets ¶

func MeasureTransparentInsets(img image.Image) (insets geom.Insets)

MeasureTransparentInsets returns how many rows an columns of fully transparent pixels there are around the image

func NewRGBAImageFromArea ¶

func NewRGBAImageFromArea(img image.Image, area geom.Rect) *image.RGBA

func NewRGBAImagesFromAreas ¶

func NewRGBAImagesFromAreas(img image.Image, areas []geom.Rect, skipEmptyAreas bool) []*image.RGBA

func Rotate90CCW ¶

func Rotate90CCW(img image.Image) *image.RGBA

func Rotate90CW ¶

func Rotate90CW(img image.Image) *image.RGBA

func ToBase64String ¶

func ToBase64String(img image.Image) (string, error)

func ToBytes ¶

func ToBytes(img image.Image) ([]byte, error)

func ToRGBA ¶

func ToRGBA(img image.Image) *image.RGBA