1) rate of chord and arc
弦弧比
2) ratio between the arc length and the chord length
弧长与弦长比
1.
Presented a feature points detection algorithm based on the ratio between the arc length and the chord length of the curve local.
提出了基于曲线局部弧长与弦长比的特征点检测算法。
4) string-arc regular
弦弧准则
1.
For solve domain of influence problem,present new caculating criteria about domain of influence-string-arc regular and its suitability is tested by the example.
为解决无单元法中影响域问题,对非连续域中点与点之间的影响效果进行了计算分析,提出了新的影响域计算准则—弦弧准则,通过算例验证了弦弧准则的合理性。
5) difference between curve's arc and chord
弧弦差
6) bowstring-arc mapping
弦弧映射
1.
It makes the earth rotating randomly with the method of quaternion and brings forward a method named bowstring-arc mapping, which is used to make viewpoint roam on the earth surface at random.
在此基础上,本文分别讨论了适合于与球形物体进行交互式操作的基本方法:采用四元数的方法解决地球的任意旋转问题;采用一种弦弧映射的近似方法实现在球面上任意两点间的漫游;采用OpenGL提供的特殊函数,结合数据库技术实现三维图形与物体属性之间的双向查询。
补充资料：弦弧
1.在曲木上张弦成弓。谓制作弓箭。语本《易．系辞下》:"弦木为弧。" 2.指弓箭。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条