diff --git a/src/util/vectors.cpp b/src/util/vectors.cpp
index 4a25a0eb..564f75c2 100644
--- a/src/util/vectors.cpp
+++ b/src/util/vectors.cpp
@@ -179,9 +179,10 @@ void makeVectors(const vec3& angles, vec3& forward, vec3& right, vec3& up)
 
 vec3 vec3::normalize(float length)
 {
-	if (abs(x) < EPSILON && abs(y) < EPSILON && abs(z) < EPSILON)
+	if (abs(x) < EPSILON2 && abs(y) < EPSILON2 && abs(z) < EPSILON2)
 		return vec3();
 	float d = length / sqrt((x * x) + (y * y) + (z * z));
+
 	return vec3(x * d, y * d, z * d);
 }
 
@@ -212,7 +213,7 @@ vec3 vec3::swap_xz()
 
 vec3 vec3::invert()
 {
-	return vec3(abs(x) >= EPSILON ? -x : x, abs(y) >= EPSILON ? -y : y, abs(z) >= EPSILON ? -z : z);
+	return vec3( -x , -y, -z );
 }
 
 float vec3::length()
@@ -266,12 +267,12 @@ vec3 vec3::flipUV()
 
 vec3 vec3::unflip()
 {
-	return vec3(x, -z, y);
+	return flipUV();
 }
 
 vec3 vec3::unflipUV()
 {
-	return vec3(x, z, -y);
+	return flip();
 }
 
 bool operator==(const vec2& v1, const vec2& v2)
@@ -400,7 +401,7 @@ float vec2::length()
 
 vec2 vec2::normalize(float length)
 {
-	if (abs(x) < EPSILON && abs(y) < EPSILON)
+	if (abs(x) < EPSILON2 && abs(y) < EPSILON2)
 		return vec2();
 	float d = length / sqrt((x * x) + (y * y));
 	return vec2(x * d, y * d);
diff --git a/src/util/vectors.h b/src/util/vectors.h
index 3a03cccc..c4e5bc7e 100644
--- a/src/util/vectors.h
+++ b/src/util/vectors.h
@@ -6,6 +6,8 @@
 
 #define EPSILON 0.0001f // EPSILON from rad.h / 10
 
+#define EPSILON2 0.00001f // EPSILON from rad.h / 100
+
 #define ON_EPSILON 0.03125f
 
 
@@ -13,36 +15,39 @@ struct vec3
 {
 	float x, y, z;
 
-	vec3() : x(+0.0f), y(+0.0f), z(+0.0f)
+	void Copy(const vec3& other) 
+	{
+		x = other.x;
+		y = other.y;
+		z = other.z;
+	}
+	vec3& operator =(const vec3& other)
 	{
+		Copy(other); 
+		return *this;
+	}
 
+	vec3(const vec3& other) 
+	{
+		Copy(other);
 	}
-	vec3(const vec3& other) : x(other.x), y(other.y), z(other.z)
+
+	vec3() : x(+0.0f), y(+0.0f), z(+0.0f)
 	{
-		if (abs(x) < EPSILON)
-		{
-			x = +0.0f;
-		}
-		if (abs(y) < EPSILON)
-		{
-			y = +0.0f;
-		}
-		if (abs(z) < EPSILON)
-		{
-			z = +0.0f;
-		}
+
 	}
+
 	vec3(float x, float y, float z) : x(x), y(y), z(z)
 	{
-		if (abs(x) < EPSILON)
+		if (abs(x) < EPSILON2)
 		{
 			x = +0.0f;
 		}
-		if (abs(y) < EPSILON)
+		if (abs(y) < EPSILON2)
 		{
 			y = +0.0f;
 		}
-		if (abs(z) < EPSILON)
+		if (abs(z) < EPSILON2)
 		{
 			z = +0.0f;
 		}