ratio

src/main.rs

@@ -1,23 +1,28 @@
+use core::f64;
 use image::{ImageBuffer, Rgba, RgbaImage};
 use std::f64::consts::PI;
 use std::fs;
 
 fn chladni(x: f64, y: f64, n: f64, m: f64, eps: f64) -> f64 {
-    (n * PI * x).cos() * (m * PI * y).cos() - (m * PI * x).cos() * (n * PI * y).cos()
+    (n * PI * x).cos() * (m * PI * y).cos() + eps * (m * PI * x).cos() * (n * PI * y).cos()
 }
 
 fn generate_png(n: u32, m: u32, width: u32, height: u32, eps: f64) {
     let mut img: RgbaImage = ImageBuffer::new(width, height);
 
+    let ratio = width as f64 / height as f64;
+
     for (x, y, pixel) in img.enumerate_pixels_mut() {
         // Centrage
-        let xf = (x as f64 / width as f64) * 2.0 - 1.0;
+        let xf = ((x as f64 / width as f64) * 2.0 - 1.0) * ratio;
         let yf = (y as f64 / height as f64) * 2.0 - 1.0;
 
         let val = chladni(xf, yf, n as f64, m as f64, eps);
-        let intensity = val.abs();
 
-        let bright = (((0.08 - intensity).max(0.0) / 0.08) * 255.0) as u8;
+        let bright = if val.abs() < 0.08 { 255 } else { 0 }; // Sans variation d'alpha
+
+        // let intensity = val.abs();
+        // let bright = (((0.08 - intensity).max(0.0) / 0.08) * 255.0) as u8;
         *pixel = Rgba([0, 0, 0, bright]);
         // *pixel = Rgb([brigh, brigh, brigh]);
     }
@@ -28,10 +33,10 @@ fn generate_png(n: u32, m: u32, width: u32, height: u32, eps: f64) {
 }
 
 fn main() {
-    let width = 1000;
-    let height = 1000;
-    let max_n = 5;
-    let max_m = 5;
+    let width = 1920;
+    let height = 1080;
+    let max_n = 6;
+    let max_m = 6;
 
     fs::create_dir_all("out").expect("Erreur");