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|
use crate::{
format::ser::{Sink, Source},
helpers::{pixel::Pixel, vector::Vec2},
view::View,
};
use std::ops::{Index, IndexMut};
#[derive(Debug, Clone)]
pub struct Frame {
pub size: Vec2<isize>,
buffer: Vec<Pixel>,
}
impl Frame {
pub fn new(size: Vec2<isize>) -> Self {
Self {
size,
buffer: (0..size.x * size.y).map(|_| Pixel::default()).collect(),
}
}
pub fn read(source: &mut impl Source, size: Vec2<isize>) -> 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::<isize>::ZERO, self.size)
}
pub fn view_mut<'a>(&'a mut self) -> View<&'a mut Frame> {
View::new(self, Vec2::<isize>::ZERO, self.size)
}
pub fn view_area<'a>(&'a self, offset: Vec2<isize>, size: Vec2<isize>) -> View<&'a Frame> {
View::new(self, offset, size)
}
pub fn view_area_mut<'a>(
&'a mut self,
offset: Vec2<isize>,
size: Vec2<isize>,
) -> View<&'a mut Frame> {
View::new(self, offset, size)
}
pub fn set(&mut self, pos: Vec2<isize>, 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<isize>> for Frame {
type Output = Pixel;
#[inline]
fn index(&self, Vec2 { x, y }: Vec2<isize>) -> &Self::Output {
&self.buffer
[(x.clamp(0, self.size.x - 1) + y.clamp(0, self.size.y - 1) * self.size.x) as usize]
}
}
impl IndexMut<Vec2<isize>> for Frame {
#[inline]
fn index_mut(&mut self, Vec2 { x, y }: Vec2<isize>) -> &mut Self::Output {
&mut self.buffer[(x + y * self.size.x) as usize]
}
}
impl Frame {
#[inline]
pub fn sample(&self, p: Vec2<f32>) -> Pixel {
self[Vec2 {
x: p.x as isize,
y: p.y as isize,
}]
// let fx = p.x.floor() as isize;
// let fy = p.y.floor() as isize;
// let cx = p.x.ceil() as isize;
// let cy = p.y.ceil() as isize;
// // TODO dont loose accuracy here
// Pixel::average(
// Pixel::average(self[Vec2 { x: fx, y: fy }], self[Vec2 { x: fx, y: cy }]),
// Pixel::average(self[Vec2 { x: cx, y: fx }], self[Vec2 { x: cx, y: fy }]),
// )
}
}
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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