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use crate::{
pixel::Pixel,
ser::{Sink, Source},
vec2::Vec2,
view::View,
};
use std::ops::{Index, IndexMut};
#[derive(Debug, Clone)]
pub struct Frame {
pub size: Vec2,
buffer: Vec<Pixel>,
}
impl Frame {
pub fn new(size: Vec2) -> Self {
Self {
size,
buffer: (0..size.x * size.y).map(|_| Pixel::default()).collect(),
}
}
pub fn read(source: &mut impl Source, size: Vec2) -> anyhow::Result<Self> {
let mut frame = Frame::new(size);
for y in 0..size.y {
for x in 0..size.x {
let pixel = source.get::<Pixel>()?;
frame[(x, y)] = pixel;
}
}
Ok(frame)
}
pub fn write(&self, sink: &mut impl Sink) -> anyhow::Result<()> {
for y in 0..self.size.y {
for x in 0..self.size.x {
sink.put(self[(x, y)])?;
}
}
Ok(())
}
pub fn view<'a>(&'a self) -> View<&'a Frame> {
View::new(self, Vec2::ZERO, self.size)
}
pub fn view_mut<'a>(&'a mut self) -> View<&'a mut Frame> {
View::new(self, Vec2::ZERO, self.size)
}
pub fn view_area<'a>(&'a self, offset: Vec2, size: Vec2) -> View<&'a Frame> {
View::new(self, offset, size)
}
pub fn view_area_mut<'a>(&'a mut self, offset: Vec2, size: Vec2) -> View<&'a mut Frame> {
View::new(self, offset, size)
}
pub fn set(&mut self, pos: Vec2, color: Pixel) {
if pos.x >= 0 && pos.y >= 0 && pos.x < self.size.x && pos.y < self.size.y {
self[pos] = color
}
}
}
impl Index<Vec2> for Frame {
type Output = Pixel;
#[inline]
fn index(&self, Vec2 { x, y }: Vec2) -> &Self::Output {
if x >= 0 && y >= 0 && x < self.size.x && y < self.size.y {
&self.buffer[(x + y * self.size.x) as usize]
} else {
&Pixel::BLACK
}
}
}
impl IndexMut<Vec2> for Frame {
#[inline]
fn index_mut(&mut self, Vec2 { x, y }: Vec2) -> &mut Self::Output {
&mut self.buffer[(x + y * self.size.x) as usize]
}
}
impl Index<(isize, isize)> for Frame {
type Output = Pixel;
#[inline]
fn index(&self, (x, y): (isize, isize)) -> &Self::Output {
&self[Vec2 { x, y }]
}
}
impl IndexMut<(isize, isize)> for Frame {
#[inline]
fn index_mut(&mut self, (x, y): (isize, isize)) -> &mut Self::Output {
&mut self[Vec2 { x, y }]
}
}
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