Enum image::DynamicImage

pub enum DynamicImage {
    ImageLuma8(GrayImage),
    ImageLumaA8(GrayAlphaImage),
    ImageRgb8(RgbImage),
    ImageRgba8(RgbaImage),
}

A Dynamic Image

Variants

ImageLuma8(GrayImage)

Each pixel in this image is 8-bit Luma

ImageLumaA8(GrayAlphaImage)

Each pixel in this image is 8-bit Luma with alpha

ImageRgb8(RgbImage)

Each pixel in this image is 8-bit Rgb

ImageRgba8(RgbaImage)

Each pixel in this image is 8-bit Rgb with alpha

Methods

impl DynamicImage

pub fn new_luma8(w: u32, h: u32) -> DynamicImage

Creates a dynamic image backed by a buffer of grey pixels.

pub fn new_luma_a8(w: u32, h: u32) -> DynamicImage

Creates a dynamic image backed by a buffer of grey pixels with transparency.

pub fn new_rgb8(w: u32, h: u32) -> DynamicImage

Creates a dynamic image backed by a buffer of RGB pixels.

pub fn new_rgba8(w: u32, h: u32) -> DynamicImage

Creates a dynamic image backed by a buffer of RGBA pixels.

pub fn to_rgb(&self) -> RgbImage

Returns a copy of this image as an RGB image.

pub fn to_rgba(&self) -> RgbaImage

Returns a copy of this image as an RGBA image.

pub fn to_luma(&self) -> GrayImage

Returns a copy of this image as a Luma image.

pub fn to_luma_alpha(&self) -> GrayAlphaImage

Returns a copy of this image as a LumaA image.

pub fn crop(&mut self, x: u32, y: u32, width: u32, height: u32) -> DynamicImage

Return a cut out of this image delimited by the bounding rectangle.

pub fn as_rgb8(&self) -> Option<&RgbImage>

Return a reference to an 8bit RGB image

pub fn as_mut_rgb8(&mut self) -> Option<&mut RgbImage>

Return a mutable reference to an 8bit RGB image

pub fn as_rgba8(&self) -> Option<&RgbaImage>

Return a reference to an 8bit RGBA image

pub fn as_mut_rgba8(&mut self) -> Option<&mut RgbaImage>

Return a mutable reference to an 8bit RGBA image

pub fn as_luma8(&self) -> Option<&GrayImage>

Return a reference to an 8bit Grayscale image

pub fn as_mut_luma8(&mut self) -> Option<&mut GrayImage>

Return a mutable reference to an 8bit Grayscale image

pub fn as_luma_alpha8(&self) -> Option<&GrayAlphaImage>

Return a reference to an 8bit Grayscale image with an alpha channel

pub fn as_mut_luma_alpha8(&mut self) -> Option<&mut GrayAlphaImage>

Return a mutable reference to an 8bit Grayscale image with an alpha channel

pub fn raw_pixels(&self) -> Vec<u8>

Return this image's pixels as a byte vector.

pub fn color(&self) -> ColorType

Return this image's color type.

pub fn grayscale(&self) -> DynamicImage

Return a grayscale version of this image.

pub fn invert(&mut self)

Invert the colors of this image. This method operates inplace.

pub fn resize(     &self,     nwidth: u32,     nheight: u32,     filter: FilterType ) -> DynamicImage

Resize this image using the specified filter algorithm. Returns a new image. The image's aspect ratio is preserved. The image is scaled to the maximum possible size that fits within the bounds specified by nwidth and nheight.

pub fn resize_exact(     &self,     nwidth: u32,     nheight: u32,     filter: FilterType ) -> DynamicImage

Resize this image using the specified filter algorithm. Returns a new image. Does not preserve aspect ratio. nwidth and nheight are the new image's dimensions

pub fn thumbnail(&self, nwidth: u32, nheight: u32) -> DynamicImage

Scale this image down to fit within a specific size. Returns a new image. The image's aspect ratio is preserved. The image is scaled to the maximum possible size that fits within the bounds specified by nwidth and nheight.

This method uses a fast integer algorithm where each source pixel contributes to exactly one target pixel. May give aliasing artifacts if new size is close to old size.

pub fn thumbnail_exact(&self, nwidth: u32, nheight: u32) -> DynamicImage

Scale this image down to a specific size. Returns a new image. Does not preserve aspect ratio. nwidth and nheight are the new image's dimensions. This method uses a fast integer algorithm where each source pixel contributes to exactly one target pixel. May give aliasing artifacts if new size is close to old size.

pub fn resize_to_fill(     &self,     nwidth: u32,     nheight: u32,     filter: FilterType ) -> DynamicImage

Resize this image using the specified filter algorithm. Returns a new image. The image's aspect ratio is preserved. The image is scaled to the maximum possible size that fits within the larger (relative to aspect ratio) of the bounds specified by nwidth and nheight, then cropped to fit within the other bound.

pub fn blur(&self, sigma: f32) -> DynamicImage

Performs a Gaussian blur on this image. sigma is a measure of how much to blur by.

pub fn unsharpen(&self, sigma: f32, threshold: i32) -> DynamicImage

Performs an unsharpen mask on this image. sigma is the amount to blur the image by. threshold is a control of how much to sharpen.

See https://en.wikipedia.org/wiki/Unsharp_masking#Digital_unsharp_masking

pub fn filter3x3(&self, kernel: &[f32]) -> DynamicImage

Filters this image with the specified 3x3 kernel.

pub fn adjust_contrast(&self, c: f32) -> DynamicImage

Adjust the contrast of this image. contrast is the amount to adjust the contrast by. Negative values decrease the contrast and positive values increase the contrast.

pub fn brighten(&self, value: i32) -> DynamicImage

Brighten the pixels of this image. value is the amount to brighten each pixel by. Negative values decrease the brightness and positive values increase it.

pub fn huerotate(&self, value: i32) -> DynamicImage

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)

pub fn flipv(&self) -> DynamicImage

Flip this image vertically

pub fn fliph(&self) -> DynamicImage

Flip this image horizontally

pub fn rotate90(&self) -> DynamicImage

Rotate this image 90 degrees clockwise.

pub fn rotate180(&self) -> DynamicImage

Rotate this image 180 degrees clockwise.

pub fn rotate270(&self) -> DynamicImage

Rotate this image 270 degrees clockwise.

pub fn write_to<W: Write, F: Into<ImageOutputFormat>>(     &self,     w: &mut W,     format: F ) -> ImageResult<()>

Encode this image and write it to w

pub fn save<Q>(&self, path: Q) -> Result<()> where     Q: AsRef<Path>,

Saves the buffer to a file at the path specified.

The image format is derived from the file extension.

Trait Implementations

impl GenericImage for DynamicImage

type Pixel = Rgba<u8>

The type of pixel.

fn dimensions(&self) -> (u32, u32)

The width and height of this image.

fn bounds(&self) -> (u32, u32, u32, u32)

The bounding rectangle of this image.

fn get_pixel(&self, x: u32, y: u32) -> Rgba<u8>

Returns the pixel located at (x, y)

fn put_pixel(&mut self, x: u32, y: u32, pixel: Rgba<u8>)

Put a pixel at location (x, y)

fn blend_pixel(&mut self, x: u32, y: u32, pixel: Rgba<u8>)

DEPRECATED: Use iterator pixels_mut to blend the pixels directly.

fn get_pixel_mut(&mut self, _: u32, _: u32) -> &mut Rgba<u8>

DEPRECATED: Do not use is function: It is unimplemented!

fn width(&self) -> u32

The width of this image.

fn height(&self) -> u32

The height of this image.

fn in_bounds(&self, x: u32, y: u32) -> bool

Returns true if this x, y coordinate is contained inside the image.

unsafe fn unsafe_get_pixel(&self, x: u32, y: u32) -> Self::Pixel

Returns the pixel located at (x, y)

unsafe fn unsafe_put_pixel(&mut self, x: u32, y: u32, pixel: Self::Pixel)

Puts a pixel at location (x, y)

Important traits for Pixels<'a, I>

impl<'a, I: GenericImage> Iterator for Pixels<'a, I> type Item = (u32, u32, I::Pixel);

fn pixels(&self) -> Pixels<Self>

Returns an Iterator over the pixels of this image. The iterator yields the coordinates of each pixel along with their value

Important traits for MutPixels<'a, I>

impl<'a, I: GenericImage + 'a> Iterator for MutPixels<'a, I> where
    I::Pixel: 'a,
    <I::Pixel as Pixel>::Subpixel: 'a,  type Item = (u32, u32, &'a mut I::Pixel);

fn pixels_mut(&mut self) -> MutPixels<Self>

Deprecated

: This cannot be implemented safely in Rust. Please use the image buffer directly.

Returns an Iterator over mutable pixels of this image. The iterator yields the coordinates of each pixel along with a mutable reference to them.

fn copy_from<O>(&mut self, other: &O, x: u32, y: u32) -> bool where     O: GenericImage<Pixel = Self::Pixel>,

Copies all of the pixels from another image into this image.

fn sub_image(     &mut self,     x: u32,     y: u32,     width: u32,     height: u32 ) -> SubImage<Self> where     Self: 'static,     <Self::Pixel as Pixel>::Subpixel: 'static,     Self::Pixel: 'static,

Returns a subimage that is a view into this image.

impl Clone for DynamicImage

fn clone(&self) -> DynamicImage

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.