From a89ce343dce62d31fd8dcfe3c1dbec1425423f44 Mon Sep 17 00:00:00 2001
From: Rosyid Haryadi <rosyid_haryadi@protonmail.com>
Date: Tue, 4 Mar 2025 00:24:58 +0700
Subject: upd progress bar because it's cool

---
 Cargo.toml    |  1 +
 src/camera.rs | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index c383576..2adb9b1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,4 +5,5 @@ edition = "2021"
 
 [dependencies]
 image = "0.25.5"
+indicatif = "0.17.11"
 rand = "0.9.0"
diff --git a/src/camera.rs b/src/camera.rs
index 0832bff..ca74f81 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -1,3 +1,4 @@
+use indicatif::{ProgressBar, ProgressStyle};
 use crate::calculus::calculus::{deg2rad, sample_square, Point3, Ray, Vec3};
 use crate::common::{get_image_height, Color, DisplayBuffer, Pixel, ASPECT_RATIO, DEFOCUS_ANGLE, FOCUS_DIST, IMG_WIDTH, LOOK_AT, LOOK_FROM, MAX_DEPTH, SAMPLES_PER_PIXEL, VFOV, VUP};
 use crate::calculus::Interval;
@@ -163,18 +164,31 @@ impl Camera {
     }
 
     pub fn render(&self, display_buffer: &mut DisplayBuffer, world: &HittableList) {
+        let progress_bar = ProgressBar::new(100);
+        let one_percent: u64 = ((self.image_width * self.image_height) / 100) as u64;
+        progress_bar.set_style(ProgressStyle::default_bar()
+            .template("Rendering {spinner:.green} {wide_bar} {percent}% ")
+            .unwrap()
+            .tick_chars("⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏ ")
+        );
+        let mut delta: u64 = 0;
         (0..self.image_height).for_each(|j| {
             (0..self.image_width).for_each(|i| {
-                println!("Processing line {} col {}", j, i);
                 let mut pixel_color = Color::new(0.0, 0.0, 0.0);
                 (0..self.samples_per_pixel).for_each(|_| {
                     let r = self.get_ray(i, j);
                     let ray_color = self.ray_color(&r, world, self.max_depth);
                     pixel_color = pixel_color.add(&ray_color);
                 });
+                delta += 1;
+                if delta >= one_percent {
+                    progress_bar.inc(1);
+                    delta = 0;
+                }
                 pixel_color = pixel_color.mul_scalar(self.pixel_samples_scale);
                 display_buffer[j][i] = Pixel::from_color(&pixel_color);
             })
-        })
+        });
+        progress_bar.finish_with_message("Done rendering to display buffer");
     }
 }
\ No newline at end of file
-- 
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