"Tworlds": twirled worlds for multimodal 'padiddle' spinning & tethered 'poi' whirling

Modern smartphones and tablets have magnetometers that can be used to detect yaw, which data can be distributed to adjust ambient media. Either static (pointing) or dynamic (twirling) modes can be used to modulate multimodal displays, including 360° imagery and virtual environments. Azimuthal tracking especially allows control of horizontal planar displays, including panoramic and turnoramic imaged-based rendering, spatial sound, and the position of avatars, virtual cameras, and other objects in virtual environments such as Alice, as well as rhythmic renderings such as musical sequencing.