Tumble! Splat! Helping Users Access and Manipulate Occluded Content in 2D Drawings
Gonzalo Ramos, George Robertson, Mary Czerwinski, Desney Tan, Patrick Baudisch, Ken Hinckley, Maneesh Agrawala
Abstract
Accessing and manipulating occluded content in layered 2D drawings can be difficult. This paper characterizes a design space of techniques that facilitate access to occluded content. In addition, we introduce two new tools, Tumbler and Splatter, which represent unexplored areas of the design space. Finally, we present results of a study that contrasts these two tools against the traditional scene index used in most drawing applications. Results show that Splatter is comparable to and can be better than the scene index. Our findings allow us to understand the inherent design tradeoffs, and to identify areas for further improvement.
Splatter ecology. a) An occlusion group gets splatered. b) Hovering over an object?s proxy reveals the objects true attributes. c) Layering: as the red pentagon is dragged close to the green rectangle, as the cursor enters the rectangle the pentagon will be put directly on top of the ellipse.