reorder

src/ray.cpp

@@ -3,7 +3,7 @@
 ray::ray() {}
 
 ray::ray(const point3& origin, const vec3& direction, double amplitude, double opl, double index_of_refraction, int phase_flips, int max_bounces)
-: orig(origin), dir(direction), amplitude(amplitude), optical_path(opl), refractive_index(index_of_refraction),
+: orig(origin), dir(direction), optical_path(opl), amplitude(amplitude), refractive_index(index_of_refraction),
   phase_flips(phase_flips), source(0), bounces_left(max_bounces){
 
 }