This paper introduces PORTAL (POrtal widget for Remote Target Acquisition and controL) that allows the user to interact with out-of-reach objects in a virtual environment. We describe the PORTAL interaction technique for placing a portal widget and interacting with target objects through the portal. We conduct two formal user studies to evaluate PORTAL for selection and manipulation functionalities. The results show PORTAL supports participants to interact with remote objects successfully and precisely. Following that, we discuss its potential and limitations, and future works.
翻译：本文介绍PORTAL(远程目标获取和 ControL Portal 部件),使用户能够在虚拟环境中与无法接触的物体进行互动。 我们描述PORTAL通过门户设置门户部件和与目标物体进行互动的交互技术。 我们进行了两项正式的用户研究,以评价PORTAL的选择和操作功能。 结果显示 PORTAL支持参与者成功和准确地与远程物体进行互动。 之后,我们讨论其潜力和局限性以及未来工程。
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