Combination of automatic and interactive tools for solution space browsing

In CAD (computer-aided design), a construction plan is a sequence of definitions coming from the solving of a dimensioned sketch. It explains how to build figures satisfying geometric constraints. However, a construction plan usually defines a whole solution space that may be very large. This paper presents a combination of automatic and interactive tools to help the designer to find more easily the expected solution among many. Then we show how they can be helpfully used to browse the entire parameterized solution space by allowing a realistic animation of constrained figures.