Abstract: A computer-implemented method for switching from a first 3D view of a 3D scene to a second 3D view of the 3D scene including obtaining the first 3D view displayed from a plane of a locked viewpoint of the 3D scene, detecting a continuous user interaction including a slide a first and second location on the plane. The method further comprises computing a distance traveled by the slide, comparing the computed distance with a predetermined distance, and if the computed distance is greater than the predetermined distance, a switch from the first 3D view to the second 3D view is performed.

Abstract: A computer-implemented method for switching from a first 3D view of a 3D scene to a second 3D view of the 3D scene including obtaining the first 3D view displayed from a plane of a locked viewpoint of the 3D scene, detecting a continuous user interaction including a slide a first and second location on the plane. The method further comprises computing a distance traveled by the slide, comparing the computed distance with a predetermined distance, and if the computed distance is greater than the predetermined distance, a switch from the first 3D view to the second 3D view is performed.

Abstract: A computer-implemented method for assisting a positioning of a digitally modeled 3D object including obtaining a first digitally modeled 3D object having a 3D position in a 3D scene, rendering a projection of said first digitally modeled 3D object on a screen according to a first axis and a first viewpoint, and while modifying, upon user action, the 3D position of the first digitally modeled 3D object along the first axis, automatically scaling the first 3D object in order to keep constant the projection of the moved object on the screen.