*

Assets/Scenes/SellmeierEquation.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class SellmeierEquation
+{
+    public class Coefficients {
+        public float[] B { get; private set; }
+        public float[] C { get; private set; }
+
+        public Coefficients(float[] b, float[] c) {
+            B = b; 
+            C = c;
+
+            if (b == null || c == null) {
+                throw new System.Exception("Invalid args");
+            }
+
+            if (b.Length == 0 || c.Length == 0) {
+                throw new System.Exception("Invalid args");
+            }
+
+            if (b.Length != c.Length) {
+                throw new System.Exception("Invalid args");
+            }
+        }
+    }
+
+
+    private Coefficients _coeffs;
+
+    public SellmeierEquation(Coefficients coeffs) {
+        _coeffs = coeffs;
+    }
+
+    public float Calc(float wavelength) {
+        return Calc(_coeffs, wavelength);
+    }
+
+    public static float Calc(Coefficients coeffs, float wavelength) {
+        float lSquare = wavelength * wavelength;
+        float resultSquared = 1.0f;
+
+        for (int i = 0; i < coeffs.B.Length; i++) {
+            float bi = coeffs.B[i];
+            float ci = coeffs.C[i];
+            resultSquared += (bi * lSquare) / (lSquare - ci);
+        }
+
+        return Mathf.Sqrt(resultSquared);
+    }
+}