Design And Implementation Of B Spline Surface Splicing Algorithm

The research of 3d surface structure is one ofthe hot topics in the research ofcomputer-aided geometric design.With the development of 3d surface construction technology,surface construction and surface splicing technology are widely used in engineering design.On surface splicing,many scholars have conducted in-depth research,mainly including two kinds:Bezier surface splicing and b-spline surface splicing.In this paper,a continuous b-spline surface splicing algorithm based on n-1 edges is designed based on a large numberof references.First of all,the research background,the significance ofthe topic and the research status at home and abroad of b-spline surface splicing technology,and introduces the structure of the paper are introduced,Secondly,the definition of b-spline curve and surface is introduced,and the properties and classification of curve and surface are analyzed in detail.Then,the surface continuity,expounds the analysis and research of the b-spline surface smoothing method are introduced mainly,and the surface smoothing method and the importance of surface smoothing are expounded.Finally,the methods of surface splicing based on the continuous surface,on the edge ofN-1 the stitching algorithm are stated in detail,through the given control points to build three splicing b-spline curved surface,the type ofstay stitching on the curved surface boundarycurve value point,through generated by inverse calculation of control points,and cross-border curve is generated by a control point,and the crossover ofcross-border curve guide bolts,based on the mapping and constraintconditions to generate Mosaic surface.The algorithm in the Windows operating system,the use ofopenGL,in VC++2010 compilation environment for the algorithm programming debugging,and gave the running results,proved the feasibility ofthe algorithm.