Box2DX.Common.Vec2.SetZero C# (CSharp) Метод

        public void SetZero()
        {
            X = 0.0f; Y = 0.0f;
        }

        /// Get the mass data of the body. The rotational inertia is relative
        /// to the center of mass.
        /// @return a struct containing the mass, inertia and center of the body.
        public void GetMassData(out MassData data)
        {
            data = new MassData();
            data.Mass = _mass;
            data.I = _I;

            Vec2 center = Vec2.Zero;
            for (Fixture f = _fixtureList; f != null; f = f._next)
            {
                MassData massData = f.GetMassData();
                _mass += massData.Mass;
                center += massData.Mass * massData.Center;
                _I += massData.I;
            }

            // Compute center of mass.
            if (_mass > 0.0f)
            {
                _invMass = 1.0f / _mass;
                center *= _invMass;
            }

            if (_I > 0.0f && (_flags & BodyFlags.FixedRotation) == 0)
            {
                // Center the inertia about the center of mass.
                _I -= _mass * Vec2.Dot(center, center);
                Box2DXDebug.Assert(_I > 0.0f);
                _invI = 1.0f / _I;
            }
            else
            {
                _I = 0.0f;
                _invI = 0.0f;
            }

            // Move center of mass.
            Vec2 oldCenter = _sweep.C;
            _sweep.LocalCenter = center;
            _sweep.C0 = _sweep.C = Math.Mul(_xf, _sweep.LocalCenter);

            // Update center of mass velocity.
            _linearVelocity += Vec2.Cross(_angularVelocity, _sweep.C - oldCenter);

            BodyType oldType = _type;
            if (_invMass == 0.0f && _invI == 0.0f)
            {
                _type = BodyType.Static;
                _angularVelocity = 0.0f;
                _linearVelocity.SetZero();
            }
            else
            {
                _type = BodyType.Dynamic;
            }

            // If the body type changed, we need to flag contacts for filtering.
            if (oldType != _type)
            {
                for (ContactEdge ce = _contactList; ce != null; ce = ce.Next)
                {
                    ce.Contact.FlagForFiltering();
                }
            }
        }