diff --git a/bidirectional_pathtracing.h b/bidirectional_pathtracing.h
index 920ba48..d67b715 100644
--- a/bidirectional_pathtracing.h
+++ b/bidirectional_pathtracing.h
@@ -288,4 +288,4 @@ BidirectionalPathtracingResult bidirectional_pathtracing(const Camera &camera, c
 
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/lighttracing.h b/lighttracing.h
index 2eace7c..982802b 100644
--- a/lighttracing.h
+++ b/lighttracing.h
@@ -81,7 +81,8 @@ LighttracingResult generate_vertices_by_lighttracing(const Camera &camera, Rando
 
 		const Sphere &now_object = spheres[intersection.object_id];
 		const Hitpoint &hitpoint = intersection.hitpoint;
-		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal); // 交差位置の法線（物体からのレイの入出を考慮）
+		 // 交差位置の法線（物体からのレイの入出を考慮）
+		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal);
 		const double russian_roulette_probability = russian_roulette(now_object);
 		// ロシアンルーレット
 		if (rnd->next01() >= russian_roulette_probability) {
@@ -141,7 +142,9 @@ LighttracingResult generate_vertices_by_lighttracing(const Camera &camera, Rando
 
 			Vec reflection_dir, refraction_dir;
 			double fresnel_reflectance, fresnel_transmittance;
-			if (check_refraction(into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal, &reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
+			if (check_refraction(
+				into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal,
+				&reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
 				// 屈折 + 反射
 				if (rnd->next01() < reflection_probability) { // 反射
 					now_sampled_pdf_omega = 1.0;
diff --git a/pathtracing.h b/pathtracing.h
index adafcb3..0aaa524 100644
--- a/pathtracing.h
+++ b/pathtracing.h
@@ -47,7 +47,8 @@ PathtracingResult generate_vertices_by_pathtracing(const Camera &camera, const i
 		
 		const Sphere &now_object = spheres[intersection.object_id];
 		const Hitpoint &hitpoint = intersection.hitpoint;
-		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal); // 交差位置の法線（物体からのレイの入出を考慮）
+		 // 交差位置の法線（物体からのレイの入出を考慮）
+		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal);
 		const double russian_roulette_probability = russian_roulette(now_object);
 		
 		// ロシアンルーレットによって、新しい頂点を「実際に」サンプリングし、生成するのかどうかを決定する。
@@ -120,7 +121,9 @@ PathtracingResult generate_vertices_by_pathtracing(const Camera &camera, const i
 
 			Vec reflection_dir, refraction_dir;
 			double fresnel_reflectance, fresnel_transmittance;
-			if (check_refraction(into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal, &reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
+			if (check_refraction(
+				into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal,
+				&reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
 				// 屈折 + 反射
 				if (rnd->next01() < reflection_probability) { // 反射
 					now_sampled_pdf_omega = 1.0;
diff --git a/reference_pathtracing.h b/reference_pathtracing.h
index b8ee379..6a5e09f 100644
--- a/reference_pathtracing.h
+++ b/reference_pathtracing.h
@@ -32,11 +32,12 @@ Color radiance_no_recursion(const Ray &ray, Random *rnd) {
 		}
 		pdf *= russian_roulette_probability;
 
-		// 影響加算
+		// 放射輝度加算
 		L = L + multiply(weight, now_object.emission) / pdf;
 	
 		const Hitpoint &hitpoint = intersection.hitpoint;
-		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal); // 交差位置の法線（物体からのレイの入出を考慮）
+		 // 交差位置の法線（物体からのレイの入出を考慮）
+		const Vec orienting_normal = dot(hitpoint.normal , now_ray.dir) < 0.0 ? hitpoint.normal: (-1.0 * hitpoint.normal);
 
 		switch (now_object.reflection_type) {
 		// 完全拡散面
@@ -62,7 +63,9 @@ Color radiance_no_recursion(const Ray &ray, Random *rnd) {
 
 			Vec reflection_dir, refraction_dir;
 			double fresnel_reflectance, fresnel_transmittance;
-			if (check_refraction(into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal, &reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
+			if (check_refraction(
+				into, hitpoint.position, now_ray.dir, hitpoint.normal, orienting_normal,
+				&reflection_dir, &refraction_dir, &fresnel_reflectance, &fresnel_transmittance)) {
 				// 屈折 + 反射
 				if (rnd->next01() < reflection_probability) { // 反射
 					now_ray = Ray(hitpoint.position, reflection_dir);
@@ -88,7 +91,6 @@ Color radiance_no_recursion(const Ray &ray, Random *rnd) {
 		} break;
 		}
 	}
-
 	return L;
 }