Vector3: added angle_to(Vector3 other)

(cherry picked from commit deb36b44d1a67157a44695ed7519605f431a3d89)

core/math/vector3.h

@@ -100,6 +100,7 @@ struct Vector3 {
 	_FORCE_INLINE_ real_t distance_to(const Vector3& p_b) const;
 	_FORCE_INLINE_ real_t distance_squared_to(const Vector3& p_b) const;
 
+	_FORCE_INLINE_ real_t angle_to(const Vector3& p_b) const;
 
 
 	_FORCE_INLINE_ Vector3 slide(const Vector3& p_vec) const;
@@ -183,17 +184,21 @@ Vector3 Vector3::linear_interpolate(const Vector3& p_b,float p_t) const {
 	);
 }
 
-
-
 real_t Vector3::distance_to(const Vector3& p_b) const {
 
 	return (p_b-*this).length();
 }
+
 real_t Vector3::distance_squared_to(const Vector3& p_b) const {
 
 	return (p_b-*this).length_squared();
 }
 
+real_t Vector3::angle_to(const Vector3& p_b) const {
+
+	return Math::acos(this->dot(p_b) / Math::sqrt(this->length_squared() * p_b.length_squared()));
+}
+
 /* Operators */
 
 Vector3& Vector3::operator+=(const Vector3& p_v) {
@@ -221,8 +226,6 @@ Vector3 Vector3::operator-(const Vector3& p_v) const {
 	return Vector3(x-p_v.x, y-p_v.y, z- p_v.z);
 }
 
-
-
 Vector3& Vector3::operator*=(const Vector3& p_v) {
 
 	x*=p_v.x;
@@ -284,7 +287,6 @@ Vector3 Vector3::operator-() const {
 	return Vector3( -x, -y, -z );
 }
 
-
 bool Vector3::operator==(const Vector3& p_v) const {
 
 	return (x==p_v.x && y==p_v.y && z==p_v.z);

core/variant_call.cpp

@@ -375,6 +375,7 @@ static void _call_##m_type##_##m_method(Variant& r_ret,Variant& p_self,const Var
 	VCALL_LOCALMEM0R(Vector3, ceil);
 	VCALL_LOCALMEM1R(Vector3, distance_to);
 	VCALL_LOCALMEM1R(Vector3, distance_squared_to);
+	VCALL_LOCALMEM1R(Vector3, angle_to);
 	VCALL_LOCALMEM1R(Vector3, slide);
 	VCALL_LOCALMEM1R(Vector3, reflect);
 
@@ -1428,6 +1429,7 @@ _VariantCall::addfunc(Variant::m_vtype,Variant::m_ret,_SCS(#m_method),VCALL(m_cl
 	ADDFUNC0(VECTOR3,VECTOR3,Vector3,ceil,varray());
 	ADDFUNC1(VECTOR3,REAL,Vector3,distance_to,VECTOR3,"b",varray());
 	ADDFUNC1(VECTOR3,REAL,Vector3,distance_squared_to,VECTOR3,"b",varray());
+	ADDFUNC1(VECTOR3,REAL,Vector3,angle_to,VECTOR3,"to",varray());
 	ADDFUNC1(VECTOR3,VECTOR3,Vector3,slide,VECTOR3,"by",varray());
 	ADDFUNC1(VECTOR3,VECTOR3,Vector3,reflect,VECTOR3,"by",varray());