Interactive constraint system for solid modeling objects
Ghassan Kwaiter, Véronique Gaildrat, René Caubet · 1997
The interaction of mechanisms applications presents a challenging domain for research in constraint-based systems. In these applications several requirements must be solved. Time consuming and complex tasks must take advantage of every computational opportunity to improve performance. Moreover, the constraints solver must give a rapid solution even in critical situations such as under-constraints, over-constraints and cyclic constraints problems. In this paper, we present a geometric constraint system named LinkEdit that provides an interactive tool to construct objects from rigid primitives and constrain them by several constraints types. In LinkEdit system, internal and external constraints are integrated as a new paradigm for constraint definition and the constraint solver is designed to handle the previous requirements, by combining local propagation and propagation of degrees of freedom techniques.