Struct Image 

pub struct Image {
    pub width: u32,
    pub height: u32,
    pub data: Vec<u8>,
}

Image data for snapshot comparison.

Fields

width: u32

Width in pixels

height: u32

Height in pixels

data: Vec<u8>

RGBA pixel data (4 bytes per pixel)

Implementations

impl Image

pub fn new(width: u32, height: u32) -> Self

Create a new image with the given dimensions.

pub fn filled(width: u32, height: u32, r: u8, g: u8, b: u8, a: u8) -> Self

Create an image filled with a single color.

pub fn as_bytes(&self) -> &[u8]

Get raw bytes.

pub fn get_pixel(&self, x: u32, y: u32) -> Option<[u8; 4]>

Get pixel at position.

pub fn set_pixel(&mut self, x: u32, y: u32, rgba: [u8; 4])

Set pixel at position.

pub fn fill_rect( &mut self, x: i32, y: i32, width: u32, height: u32, color: &Color, )

Fill a rectangle with a color (software rendering).

pub fn fill_circle(&mut self, cx: i32, cy: i32, radius: u32, color: &Color)

Fill a circle with a color (software rendering).

pub fn render(&mut self, commands: &[DrawCommand])

Render draw commands to this image (software renderer).

pub fn hash(&self) -> u64

Compute a hash of the image data.

pub fn region(&self, x: u32, y: u32, width: u32, height: u32) -> Image

Extract a sub-region of the image.

pub fn scale(&self, new_width: u32, new_height: u32) -> Image

Scale image to new dimensions (nearest neighbor).

pub fn count_color(&self, target: [u8; 4], tolerance: u8) -> usize

Count pixels matching a specific color (with tolerance).

pub fn histogram(&self) -> [[u32; 256]; 4]

Calculate histogram for each channel.

pub fn mean_color(&self) -> [f32; 4]

Calculate mean color.

pub fn draw_line(&mut self, x0: i32, y0: i32, x1: i32, y1: i32, color: &Color)

Draw a line using Bresenham’s algorithm.

pub fn stroke_rect( &mut self, x: i32, y: i32, width: u32, height: u32, color: &Color, )

Draw a stroked rectangle.

Trait Implementations

impl Clone for Image

fn clone(&self) -> Image

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Image

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.