began writing spheretracer and realized I'll have to reimplement cgmath

(badly)

raytracer/src/buffer.rs

@@ -22,10 +22,15 @@ impl Buffer {
     }
 
     /// Get a single pixel.
-    pub fn pixel(&mut self, x: usize, y: usize) -> Option<&mut BltPixel> {
+    pub fn get_pixel(&mut self, x: usize, y: usize) -> Option<&mut BltPixel> {
         self.pixels.get_mut(y * self.width + x)
     }
 
+    /// Set a single pixel.
+    pub fn set_pixel(&mut self, x: usize, y: usize, pixel: BltPixel) {
+        self.pixels[y * self.width + x] = pixel;
+    }
+
     /// Blit the buffer to the framebuffer.
     pub fn blit(&self, gop: &mut GraphicsOutput) -> Result<(), Error> {
         gop.blt(BltOp::BufferToVideo {