Approach for physically-based animation of tree branches impacting by raindrops

被引：5
|
作者：
Yang M. [1 ,3 ]
Wu E.-H. [1 ,2 ]
机构：
[1] State Key Laboratory of Computer Science, Institute of Software, The Chinese Academy of Sciences
[2] Department of Computer and Information Science, Faculty of Science and Technology, University of Macau, Macao
[3] Graduate University, The Chinese Academy of Sciences
来源：
Ruan Jian Xue Bao/Journal of Software | 2011年 / 22卷 / 08期
关键词：
Branch animation; Extended three-prism spring model; Physically-based deformation; Raindrop animation;
D O I：
10.3724/SP.J.1001.2011.04022
中图分类号：
学科分类号：
摘要：
This paper presents an approach to animate realistic interactions between tree branches and raindrops, based on physical theory. Tree branches and petioles are represented by a model namely ETPSM (extended three-prism spring model) with three-prism structures, which can be flexibly controlled by four kinds of spring systems. The branches and leaves are animated due to the bidirectional transference of kinetic energy between raindrops and the branch system. The interactions between them can be well simulated by an efficient technique, specially designed for liquid motion on non-rigid objects with hydrophilic surfaces. When the branches are impacted by a raindrop, they will vibrate and twist, and the raindrops will flow along the leaf vein, merge into larger ones, or hang on the leaf apex, and the branch will rebound and vibrate for a while after the raindrop falls off the leaf, finally into a rest place. Experimental results show that this approach can be used to efficiently and realistically simulate these interactions between tree branches and raindrops; meanwhile, it can efficiently and easily simulate the elastic deformation of rod under the influence of external forces, such as rotation and vibration. © 2011 ISCAS.
引用
收藏
页码：1934 / 1947
页数：13
相关论文
共 23 条
  • [1] Wu E.H., Chen Y.Y., Yan T., Feng J.H., Reconstruction and physically-based animation of trees from static images, Proc. of the Computer Animation and Simulation'99, pp. 157-166, (1999)
  • [2] Akagi Y., Kitajima K., Computer animation of swaying trees based on physical simulation, Computers and Graphics, 30, 4, pp. 529-539, (2000)
  • [3] Ota S., Fujimoto T., Tamura M., Muraoka K., Fujita K., Chiba N., 1/f<sup>β</sup> noise-based real-time animation of trees swaying in wind fields, Proc. of the Computer Graphics International 2003, pp. 52-59, (2003)
  • [4] Zhang L., Song C.F., Tan Q.F., Chen W., Peng Q.S., Quasi-Physical simulation of large-scale dynamic forest scenes, Proc. of Computer Graphics Int'l 2006, pp. 735-742, (2006)
  • [5] Habel R., Kusternig A., Wimmer M., Physically guided animation of trees, Computer Graphics Forum, 28, 2, pp. 523-532, (2009)
  • [6] Sakaguchi T., Ohya J., Modeling and animation of botanical trees for interactive virtual environments, Proc. of the ACM Symp. on Virtual Reality Software and Technology, pp. 139-146, (1999)
  • [7] Stam J., Stochastic dynamics: Simulating the effects of turbulence on flexible structures, Computer Graphics Forum, 16, 3, (1997)
  • [8] Ota S., Tamura M., Fujimoto T., Muraoka K., Chiba N., A hybrid method for real-time animation of trees swaying in wind fields, The Visual Computer, 20, 11, pp. 613-623, (2004)
  • [9] Zioma R., Gpu Gems 3: Gpu-Generated Procedural Wind Animations for Trees, pp. 105-121, (2007)
  • [10] Chuang Y.Y., Goldman D.B., Zheng K.C., Curless B., Salesin D.H., Szeliski R., Animating pictures with stochastic motion textures, ACM Trans. on Graphics, 24, 3, pp. 853-860, (2005)
123