It is provided a computer-implemented method for designing a CAD modeled object. The method comprises displaying three-dimensional parametric shapes; user-interacting with a screen; defining on a support at least one stroke corresponding to the user-interacting; determining, for each shape, a projection of the shape on the support; selecting at least one shape, the selected shape having a projection with a smallest distance to the stroke. Such a method makes the design of a CAD modeled object easier.