Extended T-mesh and Data Structure for the Easy Computation of T-spline
作者单位：State Key Lab.of CAD&CGZhejiang University
会议名称：《第五届全国几何设计与计算学术会议》
会议日期：2011年
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：Natural Science Foundation of China(No.60970150,60933008) Zhejiang Provincial Natural Science Foundation of China(No.Y1090416)
关 键 词：T-splines NURBS extended T-mesh local refinement geometric design isogeometric analysis
摘 要：T-spline overcomes the topological constraints of the control net of NURBS model ***,the introduction of T-junctions,L-junctions and the isolated vertices in the T-mesh makes its topological structure very *** a result,not only the T-mesh is hard to be represented,but the computation and local refinement of T-spline are difficult to be implemented as well. This hinders the studies and applications of T-splines in *** this paper,we develop the extended T-mesh,which can be represented in an obj-like format file,and converted into the face-edge-vertex data structure *** such data structure, the computation of T-splines can be made much ***,we develop a new local refinement algorithm,by virtue of the extended *** new algorithm is easy to be implemented,by separating the local refinement into two procedures,the mesh refinement,and blending function refinement.