A device and a method are disclosed for providing an improved volumetric slider on a touch user interface (UI). The device includes a UI, such as a touch screen, displaying a volumetric slider or controller. The controller is designed as a blob for adjusting the volume by a natural pinch or un-pinch motion using fingertips. The un-pinch motion stretches the blob to create two smaller blobs and a visually-compelling thread, which indicates a distance between the two smaller blobs. The thread allows the user to judge the adjustment they have made to the volume. Further, the thread can be brought to zero value by the pinch motion of the fingertips to bring the two smaller blobs together. The disclosed concept may also be applied to controls across a higher number of dimensions in 3D or 4D environments, such as virtual reality or augmented reality.
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Brown, John Neal Abram, "Volumetric Slider On User Interface", Technical Disclosure Commons, (September 19, 2017)