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Henri Palleis, Julie Wagner, Heinrich Hussmann
Perspective-dependent Indirect Touch Input for 3D Polygon Extrusion
In adjunct proceedings of the 28th ACM User Interface Software and Technology Symposium, UIST '15. Charlotte, NC, USA, November 8 - 11, 2015. ACM, New York, NY, USA.

We present a two-handed indirect touch interaction technique for the extrusion of polygons within a 3D modeling tool that we have built for a horizontal/vertical dual touch screen setup. In particular, we introduce perspective-dependent touch gestures: using several graphical input areas on the horizonta display, the non-dominant hand navigates the virtual camera and thus continuously updates the spatial frame of reference within which the dominant hand performs extrusions with dragging gestures.