disclosed is an animation method of deformable objects using an oriented material point and generalized spring model . the animation method comprises the following steps of : modeling a structure of a deformable object into oriented material points and generalized springs ; initializing forces and torques acting on the material points , calculating the forces acting on the material points owing to collision of the material points and gravity , calculating the spring forces and torques acting on the material points , obtaining new positions and postures of the material points ; updating positions , velocities , postures and angular velocities of the material points based upon physics , and displaying and storing updated results . the oriented material point and generalized spring model of the invention contains the principle of the conventional mass - spring model , but can animate deformable objects or express their structures in more intuitive manner over the conventional mass - spring model . also , the material point and generalized spring model of the invention can express elongate deformable objects such as hair and wrinkled cloth , which cannot be expressed in the prior art , so as to animate features of various objects .