init chladni

.gitignore

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+/target
+src/target
+out

Cargo.toml

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+[package]
+name = "chladni"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+image = "0.25.9"

src/main.rs

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+use image::{ImageBuffer, Rgb, RgbImage};
+use std::f64::consts::PI;
+
+fn chladni(x: f64, y: f64, n: f64, m: f64) -> f64 {
+    (n * PI * x).cos() * (m * PI * y).cos() - (m * PI * x).cos() * (n * PI * y).cos()
+}
+
+fn generate_png(n: u32, m: u32, width: u32, height: u32) {
+    let mut img: RgbImage = ImageBuffer::new(width, height);
+
+    for (x, y, pixel) in img.enumerate_pixels_mut() {
+        let xf = (x as f64 / width as f64) * 2.0 - 1.0;
+        let yf = (y as f64 / height as f64) * 2.0 - 1.0;
+
+        let val = chladni(xf, yf, n as f64, m as f64);
+        let intensity = val.abs();
+
+        let brigh = (((0.08 - intensity).max(0.0) / 0.08) * 255.0) as u8;
+        *pixel = Rgb([brigh, brigh, brigh]);
+    }
+
+    let filename = format!("chladni_{}_{}.png", n, m);
+    img.save(&filename).unwrap();
+    println!("{}", filename);
+}
+
+fn main() {
+    let width = 1000;
+    let height = 1000;
+    let max_n = 6;
+    let max_m = 6;
+
+    for n in 1..max_n {
+        for m in 1..max_m {
+            generate_png(n, m, width, height);
+        }
+    }
+}