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Describing and Computing Model of the Topological Relation in Spherical Surface Quaternary Triangular Mesh
Spherical surface QTM Euler_number Topological relation
2015/12/3
Spherical surface QTM (Quaternary Triangular Mesh) is one of an efficient tool to deal with the global data because of its advantages of multi-resolution and hierarchy. Based on characters of spherica...
The Basic Topology Issues on Spherical Surface Quaternary Triangular Mesh
SGDM Manifold SQTM Spherical Surface Digital Topology Spherical Surface Topology Paradox
2015/10/9
SGDM (Sphere Grid Data Model) is an efficient method to deal with the global data because of the advantages of multi-resolution
and hierarchy. However, SGDM has no distinct descriptions and lack of ...
三角网格曲面高精度刀轨快速生成算法(Research on High Precision and Fast Generation Algorithm of NC Tool Path for Triangular Mesh Surface)
三角网格曲面 刀轨生成 曲线逼近
2010/12/28
提出一种三角网格曲面刀轨生成算法,该算法引入R*-tree索引结构并对其进行改进,建立三角网格曲面的三维空间索引结构,快速获取局部型面参考数据并分析其微分几何性质,基于局部型面1阶连续约束条件,采用抛物线逼近网格边界,实现三角网格曲面精度补偿,对网格边界曲线与刀轨截面求交获取刀位数据,对其排序生成刀轨,实例表明该算法数据适应性强,生成数控加工刀轨精度高,算法运行速度快。
三角网格模型变形设计(Innovative Deformation Design of Triangular Mesh Model)
三角网格模型 参考曲面 三角Bézier曲面 光顺处理 变形设计
2010/4/1
提出了一种三角网格模型变形算法,采用最小二乘法求解三角网格模型变形设计的参考曲面,将网格顶点向参考曲面投影,建立网格顶点与投影点间的映射关系,通过调整参考曲面控制顶点,根据投影点位移量调整网格顶点坐标,采用三角Bézier曲面理论进行网格模型光顺处理,实例证明该方法可准确控制模型形状,有效提高三角网格模型的光顺性及变形设计效率。 A design algorithm of a triangular...