User Interface Devices for Rapid and Exact Number Specification

Ari Rappoport and Maarten van Emmerik

The need for interactive specification and editing of numbers arises in almost every geometric application. Current user interface toolkits provide a very limited set of User Interface Devices (UIDs) for number specification; usually only a text UID and a slider UID are provided. We present VigNumber, a UID for numbers. VigNumber allows exact specification of both number and grid increment using the keyboard, single digit increment/decrement using the mouse, and rapid and exact navigation using the mouse and the grid increment. The user controls both number and grid parameters in the same context.

ACM Transactions on Graphics, 12(4):348-354, 1993.