Can render a simple sphere, without shading

1 files changed, 5 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 {