Research On Soft-object Deformation In The Computer Animation

How to simulate objects more realistic is always a hot topic in computer graphics especially in the special effects industry for films and game. Currently, it has two aspects for the study of the simulation of objects, one is dedicated to the study the rigid body, and the other is the study of soft objects. For the study of the rigid body has been made a more mature theory, but it has only 15 years for the study of the soft objects. With the applications of soft object for multi-purposes and the quick development in the field of virtual reality technique, the study on the simulation of soft objects becomes an important foreland in the research field of Computer Graphic.Soft object simulation systems are mainly based on geometrical, physical and hybrid methods. The study on the simulation of soft objects becomes an important foreland in the research field of Computer Graphics. Soft objects simulation of physically-based model not only shows the appearance of flexible objects, but also well analyzes the internal structure of it. Therefore, the simulation method becomes the main trend in the research field gradually. In this paper, it uses the physical model that based on the method of simulation of the deformation of soft objects for research. The main focus of this paper is in chapter three, chapter four and chapter five.In chapter three, it gives two modeling methods, one is to establish the physically mass-spring model on soft object itself, and simplify mass-spring model, makes the calculation more quickly and easily, and real-time has reached the desired results. Secondly, this paper uses a new modeling method that simulation based on physically soft-object free-form deformation. and it will let mass-spring model load into Bezier mesh, through deform the grid to achieve the deformation of object. At the same time, this paper gives the particle's kinetic equation and its solution process. The deformation modeling method is simple, and easy to achieve the globe deformation.In chapter four, a study on the difficulty of the simulation, such as collision detection and collision response, is carried out and it uses Point to Plane model for collision detection. A new approach for the collision response is proposed and this new approach greatly reduces the calculation consumption.The last work in this paper is to leave the experimental simulation results and analysis and summarize the experimental results.