Abstract: Technology is disclosed for parametric configuration of an object. The technology brings the visual programming interaction paradigm to the same three-dimensional space occupied by the object itself. A user interface maps parameters that govern an object as interactive control-points on a translucent three-dimensional bounding volume rendered around the object. The user interacts with this interface and the parameters within and on the surface of the bounding volume. Parametric connections between objects are made by links from one bounding volume to another, or from one parameter to another within the same object. The object may contain many child-objects, each represented as a nested bounding volume within the volume of the parent object.