共 3 条
[1]
Relational geometry--a new generation of two dimensional CAD.Comput.Aided Eng. Stuart Watson. J.Aug . 1988
[2]
Robust computation of tangent lines and circles. Middleditch A E. Computer Aided Design . 1987
[3]
Geometry of 2D components. S. Hinduja and S. J. chen. Computer Aided Design . 1987