From de559b02d76d96387500cb804399acd94867b1ce Mon Sep 17 00:00:00 2001
From: JonOfUs <jonathan@flueren.eu>
Date: Sun, 17 Jul 2022 21:09:39 +0200
Subject: [PATCH] DIsable antialiasing if running with just one sample per
 pixel

---
 src/main.rs | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 8bea18f..efa4c5f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -264,13 +264,13 @@ fn main() {
 
     // Image
     let aspect_ratio = 16.0 / 9.0;
-    let image_width = 600;
+    let image_width = 1000;
     let image_height = (image_width as f64 / aspect_ratio) as u32;
-    let samples_per_pixel = 50_u32;
+    let samples_per_pixel = 1_u32;
     let max_depth = 50;
 
     let vfov = 50.0;
-    let lookfrom = Point3::new(30.0, 20.0, 30.0);
+    let lookfrom = Point3::new(-30.0, 20.0, -30.0);
     let lookat = Point3::new(0.0, 15.0, 0.0);
     let vup = Vec3::new(0.0, 1.0, 0.0);
     let dist_to_focus = 40.0;
@@ -317,8 +317,15 @@ fn main() {
 
             let mut colors = Vec::new();
             for i in 0..image_width {
-                let mut pixel_color = Color::new(0.0, 0.0, 0.0);
-                for _ in 0..samples_per_pixel {
+                let mut pixel_color = ray_color(
+                    &cam.get_ray(
+                        i as f64 / (image_width - 1) as f64,
+                        j as f64 / (image_height - 1) as f64,
+                    ),
+                    &world,
+                    max_depth,
+                ); // first ray not antialiased to disable antialiasing on value 1
+                for _ in 1..samples_per_pixel {
                     let u = (i as f64 + utility::random_f64()) / (image_width - 1) as f64;
                     let v = (j as f64 + utility::random_f64()) / (image_height - 1) as f64;
                     let r = cam.get_ray(u, v);