Abstract
That researchers in the field of computer games usually find it is difficult to simulate the motion of actual 3D model trees lies in the fact that the tree model itself has very complicated structure, and many sophisticated factors need to be considered during the simulation. Though there are some works on simulating 3D tree and its motion, few of them are used in computer games due to the high demand for real-time in computer games. In this paper, an approach of animating trees in computer games based on a novel tree model representation—Ball B-Spline Curves (BBSCs) are proposed. By taking advantage of the good features of the BBSC-based model, physical simulation of the motion of leafless trees with wind blowing becomes easier and more efficient. The method can generate realistic 3D tree animation in real-time, which meets the high requirement for real time in computer games.
Highlights
In current computer games, plants in scenes are usually consisted of simple plane pictures positioned in four orthogonal directions. 3D models of plants are seldom used in computer games
In Feng’s study [11], a single branch is divided into several little segments, and each of these segments can be viewed as a pole which cannot deform in the axis direction
An approach of generating real-time animation of trees based on a novel model— Ball B-Spline Curves (BBSCs)—is proposed, which can be applied in computer games
Summary
Plants in scenes are usually consisted of simple plane pictures positioned in four orthogonal directions. 3D models of plants are seldom used in computer games. Some can be used to animating trees in computer games like Akagi’s work as extra speeding technique was employed to reduce the computational complexity, and real-time animation can be generated [12]. Most of the tree representations are too complicated to implement real-time animation; for another, the simulation of tree animation is a sophisticated work because many physical computations like animation aerodynamics, material mechanics, and pole kinematics are involved. A novel tree model based on BBSC is introduced, and the method of simulating tree motions based on this model is proposed [16]. This model combined with this method is efficient for generating real-time tree motions in computer games.
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