Expand description
Functions for altering and converting the color of pixelbufs
Structs§
- A bi-level color map
Traits§
- A color map
Functions§
- Brighten the supplied image.
value
is the amount to brighten each pixel by. Negative values decrease the brightness and positive values increase it. - Brighten the supplied image in place.
value
is the amount to brighten each pixel by. Negative values decrease the brightness and positive values increase it. - Adjust the contrast of the supplied image.
contrast
is the amount to adjust the contrast by. Negative values decrease the contrast and positive values increase the contrast. - Adjust the contrast of the supplied image in place.
contrast
is the amount to adjust the contrast by. Negative values decrease the contrast and positive values increase the contrast. - Reduces the colors of the image using the supplied
color_map
while applying Floyd-Steinberg dithering to improve the visual conception - Convert the supplied image to grayscale. Alpha channel is discarded.
- Convert the supplied image to grayscale. Alpha channel is preserved.
- Convert the supplied image to a grayscale image with the specified pixel type. Alpha channel is discarded.
- Convert the supplied image to a grayscale image with the specified pixel type. Alpha channel is preserved.
- Hue rotate the supplied image.
value
is the degrees to rotate each pixel by. 0 and 360 do nothing, the rest rotates by the given degree value. just like the css webkit filter hue-rotate(180) - Hue rotate the supplied image in place.
- Reduces the colors using the supplied
color_map
and returns an image of the indices - Invert each pixel within the supplied image. This function operates in place.