Codec.Picture.Extra

A collection of functions to scale, crop, flip images with JuicyPixels.

Scaling

scaleBilinear

Arguments

:: (Pixel a, Bounded (PixelBaseComponent a), Integral (PixelBaseComponent a))

=> Int

Desired width

-> Int

Desired height

-> Image a

Original image

-> Image a

Scaled image

Scale an image using bi-linear interpolation.

Cropping

crop

Arguments

:: Pixel a

=> Int

Index (X axis) of first pixel to include

-> Int

Index (Y axis) of first pixel to include

-> Int

Width of resulting image

-> Int

Height of resulting image

-> Image a

Original image

-> Image a

Cropped image

Crop an image. If the supplied coordinates are greater than the size of the image, the image boundaries are used instead.

trim :: (Pixel a, Eq (PixelBaseComponent a)) => Image a -> Image a

Trim the completely transparent edges of an image.

Since: 0.6.0

Rotation

flipHorizontally :: Pixel a => Image a -> Image a

Flip an image horizontally.

flipVertically :: Pixel a => Image a -> Image a

Flip an image vertically.

rotateLeft90 :: Pixel a => Image a -> Image a

Rotate an image to the left by 90°.

rotateRight90 :: Pixel a => Image a -> Image a

Rotate an image to the right by 90°.

rotate180 :: Pixel a => Image a -> Image a

Rotate an image by 180°, i.e flip both vertically and horizontally.

Since: 0.2.0

Other

beside :: Pixel a => [Image a] -> Image a

Create an image by placing several images side by side. If the images are of differnet heights the smallest height is used.

Since: 0.2.0

below :: Pixel a => [Image a] -> Image a

Create an image by placing several images in a vertical stack. If the images are of differnet widths the smallest width is used.

Since: 0.2.0

square :: Pixel a => a -> Image a -> Image a

Make an image a perfect square by adding filler around it.

Since: 0.6.0