Add LightData enum for storing analysis results of nodes.

src/lib.rs

@@ -5,6 +5,7 @@ pub mod optic_scenery;
 /// The basic structure representing an optical element
 pub mod optic_node;
 pub mod light;
+pub mod lightdata;
 
 pub mod optic_ports;
 

src/light.rs

+use crate::lightdata::LightData;
+
 #[derive(Debug)]
 pub struct Light {
     src_port: String,
     target_port: String,
+    data: Option<LightData>
 }
 
 impl Light {
@@ -9,6 +12,7 @@ impl Light {
         Self {
             src_port: src_port.into(),
             target_port: target_port.into(),
+            data: None
         }
     }
     pub fn src_port(&self) -> &str {
@@ -33,6 +37,7 @@ mod test {
         let light = Light::new("test1", "test2");
         assert_eq!(light.src_port, "test1");
         assert_eq!(light.target_port, "test2");
+        assert_eq!(light.data, None);
     }
     #[test]
     fn src_port() {

src/lightdata.rs

+#[derive(Debug, PartialEq)]
+pub enum LightData {
+  Energy(LightDataEnergy),
+  Geometric(LightDataGeometric),
+  Fourier
+}
+
+#[derive(Debug, PartialEq)]
+pub struct LightDataEnergy {
+  energy: f32
+}
+
+#[derive(Debug, PartialEq)]
+pub struct LightDataGeometric {
+  ray: i32
+}
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