Can render a simple sphere, without shading

2 files changed, 12 insertions, 1 deletions

diff --git a/src/core/spectrum.rs b/src/core/spectrum.rs
index c72a251..fb82a9e 100644
--- a/src/core/spectrum.rs
+++ b/src/core/spectrum.rs
@@ -12,9 +12,13 @@ pub struct Spectrum {
 }
 
 impl Spectrum {
-    fn new_rgb(r: Float, g: Float, b: Float) -> Spectrum {
+    pub fn new_rgb(r: Float, g: Float, b: Float) -> Spectrum {
         Spectrum { c: [r, g, b] }
     }
+
+    pub fn to_rgb(&self, scale: Float) -> (Float, Float, Float) {
+        (self.c[0] * scale, self.c[1] * scale, self.c[2] * scale)
+    }
 }
 
 impl std::ops::Mul<Float> for &Spectrum {
diff --git a/src/core/vector2.rs b/src/core/vector2.rs
index 5afa0f2..3aadb46 100644
--- a/src/core/vector2.rs
+++ b/src/core/vector2.rs
@@ -3,6 +3,7 @@
 //! This is implemented generictly with types that fit in the Number trait
 use crate::{Float, Number};
 use std::ops::{Sub, Add};
+use std::fmt;
 
 #[derive(Clone, Copy)]
 pub struct Vector2<T: Number> {
@@ -43,6 +44,12 @@ impl<T: Number> Add for Vector2<T> {
     }
 }
 
+impl<T: Number> fmt::Display for Vector2<T> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.write_fmt(format_args!("[{}, {}]", self.x, self.y))
+    }
+}
+
 impl Vector2f {
     pub fn ceil(&self) -> Self {
         Self::new_xy(