Add light materials

1 files changed, 27 insertions, 0 deletions

diff --git a/src/material/diffuse_light.rs b/src/material/diffuse_light.rs
new file mode 100644
index 0000000..fe462a8
--- /dev/null
+++ b/src/material/diffuse_light.rs
@@ -0,0 +1,27 @@
+use super::Material;
+use crate::core::{Ray, Spectrum};
+use crate::Float;
+
+pub struct DiffuseLight {
+    color: Spectrum,
+}
+
+impl DiffuseLight {
+    pub fn new(c: Spectrum) -> Self {
+        Self {
+            color: c,
+        }
+    }
+
+    pub fn new_white(s: Float) -> Self {
+        Self {
+            color: Spectrum::new_rgb(s, s, s),
+        }
+    }
+}
+
+impl Material for DiffuseLight {
+    fn emitted(&self, _: &Ray) -> Option<Spectrum> {
+        Some(self.color)
+    }
+}