Apparent Layer Operations for the Manipulation of Deformable Objects
We
introduce layer operations for single-view 3D deformable object manipulation, in which the user can control
the depth order of layered 3D objects resting
on a flat ground with simple clicks and drags, as in 2D drawing systems.We present
two interaction techniques based on this idea and describe
their implementation. The first technique is explicit
layer swap. The user clicks the target
layer, and the system swaps the layer with the one directly underneath it. The second
technique is layer-aware dragging. As the user drags the object, the system adjusts its depth automatically to pass over or under a colliding object in the screen space, according to user control.
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