| 基于Metaball的过渡曲线 |
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| 引用本文： | 李凌丰,谭建荣,赵海霞.基于Metaball的过渡曲线[J].中国机械工程,2005,16(6):483-486. |
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| 作者姓名： | 李凌丰 谭建荣 赵海霞 |
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| 作者单位： | 浙江大学CAD&CG国家重点实验室,杭州,310027 |
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| 基金项目： | 国家863高技术研究发展计划资助项目(863-511-
941- 010, 863 - 511 - 090 - 012 )，浙江省科技计划项目(2004C31018) |
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| 摘 要： | 利用基于Metaball的约束变形技术，改变原来势函数计算中空间点到约束中心直线距离r的定义，用参数曲线的参数t代替直线距离r，提出了根据被连接曲线构造过渡曲线的新方法。该方法对被连接曲线的种类没有限制，得到的过渡曲线可光滑连接被连接曲线，形状更自然，并且可从被连接曲线的中间点开始过渡。
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| 关 键 词： | 过渡曲线 Metaball势函数 约束变形 |
| 文章编号： | 1004-132X(2005)06-0483-04 |
Construction Method of Transition Curve Based on Metaball Technique |
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| Li Lingfeng,Tan Jianrong,Zhao Haixia.Construction Method of Transition Curve Based on Metaball Technique[J].China Mechanical Engineering,2005,16(6):483-486. |
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| Authors: | Li Lingfeng Tan Jianrong Zhao Haixia |
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| Affiliation: | Li Lingfeng Tan Jianrong Zhao Haixia State Key Laboratory of CAD&CG,Zhejiang University,Hangzhou,310027 |
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| Abstract: | Metaball-based constraint deformation technique was used to change the definition of r, the straight-line distance from a space point to a constraint center in the original calculation of potential function. By replacing parametert of the parametrized curve t with the straight-line distance r, a method of building transition curves according to connected curves was proposed. The method has no restrictions on connected curves that control the space shapes of transition curve. Thus transition curves with continuity can be obtained, and they are more abundant in shapes and natural. The connection of transition curves can start from the middle of the connected curves. |
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| Keywords: | transition curve Metaball potential function constrained deformation |
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