draw basic function

Cargo.toml

@@ -8,3 +8,4 @@ edition = "2021"
 [dependencies]
 image = "0.24.7"
 rand = "0.8.5"
+num_cpus = "1.16.0"

src/main.rs

@@ -1,5 +1,6 @@
 #![allow(dead_code)]
 
+use std::env;
 use rand::Rng;
 use image::Rgb;
 use image::RgbImage;
@@ -7,31 +8,54 @@ use image::ImageBuffer;
 
 
 fn main() {
-    let width = 6500;
+    let args: Vec<String> = env::args().collect();
-    let height = 6500;
+
+    let _num_chunks = args.get(1)
+        .and_then(|arg: &String| arg.parse::<usize>().ok())
+        .unwrap_or(num_cpus::get());
+
+    let width = 7000;
+    let height = 7000;
     let mut img = get_image(width, height);
 
-    // let mut colors= vec![];
+    let mut colors= vec![];
-
     let mut points = vec![];
-    for i in 0..=1000 {
+    // for i in 0..=10000 {
-        points.push(i as f64 / 1000.0);
+    //     points.push(i as f64 / 10000.0);
-        points.push(-(i as f64 / 1000.0));
+    //     // points.push(-(i as f64 / 10000.0));
+    // }
+
+    let step = 0.001; // Define the step size
+    let mut current_value = 0.0;
+
+    while current_value <= 1.8 {
+        points.push(current_value);
+        current_value += step;
     }
 
     // funktion = f(x) = 3x^2
     // ableitungsquotient = 6a 
 
-
+    let color = [
+        generate_random(0, 255),
+        generate_random(0, 255),
+        generate_random(0, 255)
+    ];
+    colors.push(color);
     for point in points {
-        // let color = [generate_random(0, 255), generate_random(0, 255), generate_random(0, 255)];
+        let x = (point * 1000.0_f64).round() as u32;
-        // colors.push(color);
+        let y = (get_point(point) * 1000.0).round() as u32;
-        // img.put_pixel((point * 1000.0_f64).round() as u32, (get_point(point as i32) * 1000.0).round() as u32, Rgb(color));
         img.put_pixel(
-            (point * 1000.0_f64).round() as u32 + (width / 2),
+            x + width / 2,
-            (get_point(point) * 1000.0).round() as u32 + (height / 2),
+            y + height / 2,
-            Rgb([255,255,255])
+            Rgb(color)
         );
+        img.put_pixel(
+            x + width / 2 - x * 2,
+            y + height / 2,
+            Rgb(color)
+        );
+
     }
 
 
@@ -44,7 +68,8 @@ fn get_pitch_quotient() -> u32 {
 }
 
 fn get_point(x: f64) -> f64 {
-    3.0 * x.powf(2.0)
+    // 3.0 * x.powf(2.0)
+    x.powf(2.0)
 }
 
 
@@ -57,7 +82,7 @@ fn generate_random(start: u8, end: u8) -> u8 {
 fn get_image(width: u32, height: u32) -> ImageBuffer<Rgb<u8>, Vec<u8>> {
     let mut img = RgbImage::new(width, height);
     let grid_spacing = 50;
-    let grid_color = Rgb([255, 9, 255]); // Black colo
+    let grid_color = Rgb([255,9,255]);
 
     for x in (0..width).step_by(grid_spacing) {
         for y in 0..height {