Abstract��According to the characteristics of the closed curve on every section of mannequin�� the rectangular coordinates function was converted to the polar coordinates function��cubic spline interpolation conducted��and x, y, z value were converted later again��This method is simple��with less calculation��But fitting model of the shoulder and neck deformated greatly��After analyzing of the reason of large deformation��the parametric cubic spline interpolation method was used for x, y, z respectively on Warps and wefts with accumulative bowstring length as parameter to fit the surface of mannequin�� Simulation with OpenGL shows that parametric cubic spline interpolation method can solve the problem of eshoulder and neck deformation�� make the mannequin more realistic��and the method is suitable for mannequin model simulation��
