3d interface with an improved object selection

A non-transitory computer-readable data-storage medium containing computer-executable instructions that when executed by a computer system cause the computer system to implement a method, comprising:

• displaying on at least one display, a set of 3D objects;
• receiving from at least one input interface a selection by a user of at least one first 3D object belonging to said set;
• calculating a 3D projection of said selection on said display;
• obtaining the outcome of a comparison of at least one size of said 3D projection to at least one threshold;
• if said outcome is negative, adding to or removing from said selection, at least one second 3D object;
• and
• modifying appearance parameters of said selection.

A computer system, comprising:

• at least one display;
• at least one input interface;
• at least one processor, wherein the processor is configured to:
• display on at least one display, a set of 3D objects,
• receive from the at least one input interface a selection by a user of at least one first 3D object belonging to said set,
• calculate a 3D projection of said selection on said display,
• obtain the outcome of a comparison of at least one size of said 3D projection to at least one threshold,
• if said outcome is negative, add to or remove from said selection, at least one second 3D object, and
• modify appearance parameters of said selection.