Abstract: According to the invention, there is provided a computer-implemented method for duplicating a modeled object displayed on a touch screen and designing its duplicated version in a single gesture. The method comprises detecting (201) contact of an appendage within an activation zone associated to the first modeled object. If the contact is maintained more than a predetermined amount of time Tm (202), the method duplicates (203) the first modeled object into a second modeled object. The method, while maintaining contact between the appendage and the touch screen, performs at least one design operation (204) on the second modeled object depending of the movement of the appendage on the touch screen.

Abstract: A computer-implemented method for designing a three-dimensional modeled object comprising the steps of providing a three-dimensional designing scene (41) in a display screen (40); and providing a graphical tool (42) in a first area (43) with a reduced size in the display area (44) of the screen (40) comprising at least one image (45, 46, 47). The graphical tool (42) is permanently superimposed over the scene (41).