Struct advent_of_code_2021::day_20::Image

struct Image {
    pixels: HashSet<(isize, isize)>,
    min_x: isize,
    max_x: isize,
    min_y: isize,
    max_y: isize,
    default_pixel: bool,
}

Represents an image as the set of pixels that are on, the bounds of the current image data, and the default value for pixels outside this area.

Fields

pixels: HashSet<(isize, isize)>

set of active pixels within (min_x, min_y) .. (max_x, max_y)

min_x: isize

lower bound of the image data x co-ordinate values

max_x: isize

upper bound of the image data x co-ordinate values

min_y: isize

lower bound of the image data y co-ordinate values

max_y: isize

upper bound of the image data y co-ordinate values

default_pixel: bool

The value of all pixels outside the image data bounds

Implementations

impl Image

fn iterate(&self, bitmap: &Vec<bool>) -> Image

Builds a new image by expanding the area by 1 pixel in all directions, and mapping those based in the image data / default pixel value, finally calculating the new value for the default.

fn map_pixel(&self, x: isize, y: isize, bitmap: &Vec<bool>) -> bool

Get if a specific pixel will be active in the next iteration

fn iterate_n(&self, bitmap: &Vec<bool>, n: usize) -> Image

Repeatedly iterate the current image n times

Trait Implementations

impl Clone for Image

fn clone(&self) -> Image

Returns a copy 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.

impl<'a> From<(&'_ mut Lines<'a>, isize, isize)> for Image

fn from((lines, min_x, min_y): (&mut Lines<'a>, isize, isize)) -> Self

Takes lines as parse_input needs to take the first two lines before this is called

impl PartialEq<Image> for Image

fn eq(&self, other: &Image) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Image) -> bool

This method tests for !=.

impl Eq for Image

impl StructuralEq for Image

impl StructuralPartialEq for Image