| 摘要: |
| 本文提出了一种新的基于ｆａｃｔｏｒｃｕｒｖｅ的变形控制方法．Ｂａｒｒ的整体非线性变形和Ｗａｔｔ的时空因子曲线方法都不同程度地依赖于某种解析表达式，不便于进行统一的控制．作者首次对因子曲线进行了分类，提供了一种统一的控制方式，因而非常适合于动画系统．把因子曲线本身作为可变参数的动画控制方法不仅包含了Ｂａｒｒ的ｔａｐｅｒｉｎｇ和ｔｗｉｓｔｉｎｇ操作，而且还包含了Ｗａｔｔ的因子曲线变形控制方法．因而动画师有更多的余地对变形进行有效的控制． |
| 关键词: 空间变形 因子曲线 扭曲变形 渐细变形 |
| DOI： |
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| 基金项目:本文研究得到国家自然科学基金资助. |
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| A NEW DEFORMATION CONTROL METHOD BASED ON FACTOR CURVES |
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Jin Xiaogang,Bao Hujun,Peng Qunsheng
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| Abstract: |
| This paper proposes a new deformation control method based on the factor curves. Both Bars's global nonlinear deformation and Watt's space-time factor curves depend on some kinds of analytical expressions hence. The authors classify the factor curves and provide a unified deformation control method which is convenient for animation systems. By taking the factor curves as animation parameters, the new control method not only includes Bars's tapering and twisting operations but also Watt's factor curve control method. Animators can control the deformation effectively with the method. |
| Key words: Space deformation factor curve tapering twisting. |
