This work described in this article was supported by the National Science Foundation of China(61772164,61272032);Provincial Key Platforms and Major Scientific Research Projects in Universities and Colleges of Guangdong(2017KTSCX143);the Natural Science Foundation of Zhejiang Province(LY17F020025).
In this article,we adopt the C-type spline of degree 2 to model and blend basic shapes including conics and circle arcs.The C-type spline belongs to theωB-spline category of splines that are capable of blending polyn...