Animated Spatial Sketches
Volker Haarslev, Michael Wesse · 1997
We present the design ofthe visiial query system VlSCO that offers a sketch-based query larzguage for defining approximate spatial constellations of objects. VlSCO smoothly integrates geometrical and topological querying with deductive spatial reasoning. It is based on a strong physical metaphor visualizing semantics oj query elements. Approximate queries rely on combined topological and geometrical constraints enhanced with relaxations and “don’t cares” that are visualized through live aninzations.