old dir

1 files changed, 0 insertions, 81 deletions

diff --git a/evc/src/helpers/pixel.rs b/evc/src/helpers/pixel.rs
deleted file mode 100644
index 39fe98c..0000000
--- a/evc/src/helpers/pixel.rs
+++ /dev/null
@@ -1,81 +0,0 @@
-use crate::format::ser::{Ser, Sink, Source};
-
-#[derive(Copy, Clone, Debug, Default, PartialEq)]
-pub struct Pixel {
-    pub r: u8,
-    pub g: u8,
-    pub b: u8,
-}
-
-impl Ser for Pixel {
-    fn write(&self, sink: &mut impl std::io::Write) -> anyhow::Result<()> {
-        sink.put((self.r, self.g, self.b))
-    }
-
-    fn read(source: &mut impl std::io::Read) -> anyhow::Result<Self> {
-        let (r, g, b) = source.get()?;
-        Ok(Self { r, g, b })
-    }
-}
-
-impl Pixel {
-    pub const BLACK: Pixel = Pixel { r: 0, g: 0, b: 0 };
-    #[inline]
-    pub fn distance(a: Pixel, b: Pixel) -> usize {
-        let (rd, gd, bd) = (
-            a.r.abs_diff(b.r) as usize,
-            a.g.abs_diff(b.g) as usize,
-            a.b.abs_diff(b.b) as usize,
-        );
-        // fast_sqrt(rd * rd + gd * gd + bd * bd)
-        // SQRT[rd + gd + bd]
-        rd + gd + bd
-    }
-
-    #[inline]
-    pub fn average(a: Pixel, b: Pixel) -> Pixel {
-        Pixel {
-            r: ((a.r as u16 + b.r as u16) >> 1) as u8,
-            g: ((a.g as u16 + b.g as u16) >> 1) as u8,
-            b: ((a.b as u16 + b.b as u16) >> 1) as u8,
-        }
-    }
-
-    #[inline]
-    pub fn scale(&self, factor: f32) -> Pixel {
-        Pixel {
-            r: ((self.r as f32) * factor).clamp(0.0, 255.0) as u8,
-            g: ((self.g as f32) * factor).clamp(0.0, 255.0) as u8,
-            b: ((self.b as f32) * factor).clamp(0.0, 255.0) as u8,
-        }
-    }
-}
-
-pub const SQRT: [usize; 256 * 3] = gen_sqrt_lookup();
-
-const fn gen_sqrt_lookup<const N: usize>() -> [usize; N] {
-    let mut arr = [0; N];
-    let mut i = 0;
-    while i < N {
-        arr[i] = sqrt(i as f32) as usize;
-        i += 1;
-    }
-    arr
-}
-
-const fn sqrt(x: f32) -> f32 {
-    let a = 1.0;
-    let a = (a + x / a) * 0.5;
-    let a = (a + x / a) * 0.5;
-    let a = (a + x / a) * 0.5;
-    a
-}
-
-pub fn fast_sqrt(x: usize) -> usize {
-    let a = 1;
-    let a = (a + x / (a + 1)) / 2;
-    let a = (a + x / (a + 1)) / 2;
-    // let a = (a + x / (a + 1)) / 2;
-    // let a = (a + x / (a + 1)) / 2;
-    a
-}