Broken

mas/fractals/mandel/src/main.rs

@@ -1,8 +1,6 @@
 mod mandel;
 mod render;
 
-use std::env;
-
 use sdl2::pixels::Color;
 use sdl2::event::Event;
 use sdl2::keyboard::Keycode;
@@ -17,9 +15,14 @@ fn main() {
     */
     let (width, height) = (640, 480);
     let (xr, yr) = ([-200, 200], [-200, 200]);
+    let depth = 500;
     
     let (window, ctx, vid_sys) = render::create_window("Mandelbrot set", width, height);
 
+    let mut canvas = window.into_canvas().build().unwrap();
+    canvas.set_draw_color(Color::RGB(255, 255, 255));
+    canvas.clear();
+    canvas.present();
 
     let mut event_pump = ctx.event_pump().unwrap();
     'running: loop {
@@ -34,6 +37,14 @@ fn main() {
         }
 
         // render stuff
+        for dx in xr[0]..xr[1] {
+            for dy in yr[0]..yr[1] {
+                let col: Color = mandel::get_point_color(width.try_into().unwrap(), height.try_into().unwrap(), dx, dy, depth); 
+                println!("{}:{} {:?}", dx, dy, col);
+                render::set_pixel(&mut canvas, dx, dy, col);
+            }
+        }
+        canvas.present();
     }
     ::std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
 }

mas/fractals/mandel/src/mandel.rs

@@ -1,5 +1,4 @@
 use num::complex::Complex;
-use matrix::Matrix;
 use sdl2::pixels::Color;
 
 /*
@@ -29,13 +28,13 @@ fn mandel(n: u64, c: Complex<f64>) -> Complex<f64> {
 }
 
 pub fn get_point_color(w: i32, h: i32, x: i32, y: i32, depth: u64) -> Color {
-    let c = Complex::<f64>::new((x - w/2).into(), (y - h/2).into());
+    let c = Complex::<f64>::new((x + w/2).into(), (y + w/2).into());
     let mut norm = mandel(depth, c).norm(); 
     
     if norm < 2.0 {
         return Color::RGB(0, 0, 0);
     } else {
-        return Color::RGB(255, 255, 255);
+        return Color::RGB(255, 25, 25);
     }
 }
 

mas/fractals/mandel/src/render.rs

@@ -1,12 +1,11 @@
 extern crate sdl2;
-
 use sdl2::pixels::Color;
-use sdl2::event::Event;
-use sdl2::keyboard::Keycode;
-use std::time::Duration;
+use sdl2::rect::Rect;
+use sdl2::render::Canvas;
 
 pub fn create_window(title: &str, width: u32, height: u32) 
-    -> (sdl2::video::Window, sdl2::Sdl, sdl2::VideoSubsystem) {
+    -> (sdl2::video::Window, sdl2::Sdl, sdl2::VideoSubsystem) 
+{
     let ctx = sdl2::init().unwrap();
     let vid_sys = ctx.video().unwrap();
 
@@ -16,3 +15,8 @@ pub fn create_window(title: &str, width: u32, height: u32)
                         .unwrap();
     return (window, ctx, vid_sys);
 }
+
+pub fn set_pixel(canvas: &mut Canvas<sdl2::video::Window>, x: i32, y: i32, color: Color) {
+    canvas.set_draw_color(color);
+    canvas.fill_rect(Rect::new(x, y, 1, 1));
+}