Abstract
Abstract In this paper, we report on our investigation of haptics-enabled mid-air interactions for sketching three-dimensional (3D) curve-soups—collections of three-dimensional multi-planar curves. We study pen-based mid-air interactions for free-form curve input from the perspective of manual labor, controllability, and kinesthetic feedback. We specifically study the role of kinesthetic feedback for two aspects of mid-air sketching, namely, drawing curves on planar surfaces and spatial rotation of 3D curve-soups. For this, we implemented a simple haptics-enabled workflow for users to draw and compose collections of planar curves on a force-enabled virtual canvas. The qualitative and quantitative analyses of our study-tasks show that there is a rich interaction design space of kinesthetic feedback methods for mid-air sketching beyond physically currently prevalent models.
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