From d618968b9577cbaf6306f42157be19bd2a6a6aa0 Mon Sep 17 00:00:00 2001
From: Rosyid Haryadi <rosyid_haryadi@protonmail.com>
Date: Sun, 2 Mar 2025 15:00:40 +0700
Subject: upd gamma correction

---
 src/common.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/common.rs')

diff --git a/src/common.rs b/src/common.rs
index 3975609..a676939 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -11,12 +11,14 @@ pub const FOCAL_LENGTH: f32 = 1.0;
 pub const CAMERA_CENTER: Point3 = Point3 { x: 0f32, y: 0f32, z: 0f32 };
 
 pub const SAMPLES_PER_PIXEL: usize = 100;
+pub const MAX_DEPTH: usize = 50;
 
 pub const fn get_image_height(image_width: usize, aspect_ratio: f32) -> usize {
     let image_height = (image_width as f32 / aspect_ratio) as usize;
     if image_width < 1 { 1 } else { image_height }
 }
 
+#[derive(Debug, Clone)]
 pub struct Color {
     pub r: f32,
     pub g: f32,
@@ -43,6 +45,16 @@ impl Color {
             b: self.b + other.b
         }
     }
+
+    fn _linear_to_gamma(linear_comp: f32) -> f32 {
+        if linear_comp > 0.0 { linear_comp.sqrt() } else { 0.0 }
+    }
+
+    pub fn linear_to_gamma(&mut self) {
+        self.r = Self::_linear_to_gamma(self.r);
+        self.g = Self::_linear_to_gamma(self.g);
+        self.b = Self::_linear_to_gamma(self.b);
+    }
 }
 
 
@@ -64,6 +76,8 @@ impl Pixel {
     }
 
     pub fn from_color(color: &Color) -> Self {
+        let mut clone = color.clone();
+        clone.linear_to_gamma();
         let (r, g, b) = (color.r, color.g, color.b);
         Self::from_frac(r, g, b)
     }
-- 
cgit v1.2.3-70-g09d2