Knocked off a few TODOs

src/consts.h

@@ -1,7 +1,7 @@
 #ifndef CONSTS_H
 #define CONSTS_H
 
-// TODO: Eventually, export this into a better place (i.e., such that we do not have to recompile every time we change a parameter)
+// --------------------------- Basic Constants ---------------------------
 const int VOLUME_WIDTH  = 49;
 const int VOLUME_HEIGHT = 51;
 const int VOLUME_DEPTH  = 42;
@@ -9,6 +9,21 @@ const int VOLUME_DEPTH  = 42;
 const int IMAGE_WIDTH   = 2560;
 const int IMAGE_HEIGHT  = 1440;
 
+const double epsilon = 1e-10f;
+const double infty   = 1e15f;  // This vlalue is used to represent missing values in data
+
+
+// --------------------------- Raycasting Constants ---------------------------
 const int SAMPLES_PER_PIXEL = 8;  // TODO: Right now uses simple variance, consider using something more advanced (e.g., some commonly-used noise map)
 
+const float alphaAcumLimit = 0.65f;   // TODO: Idk what a good accumulation value is
+const float minAllowedDensity = 0.001f;
+
+
+// --------------------------- Illumination Constants ---------------------------
+const double ambientStrength  = 0.3;
+const double diffuseStrength  = 0.8;
+const double specularStrength = 0.5;
+const int shininess           = 32;
+
 #endif // CONSTS_H