This paper describes Ozone, a new media choreography system based on layered, continuous physical models, designed for building a diverse range of interactive spaces that coordinate arbitrary streams of video and audio synthesized in real-time response to continuous, concurrent activity by people in a live event. We aim to build rich responsive spaces that sustain the free improvisation of collectively or individually meaningful non-linguistic gesture. Ozone provides an expressive way to compose the potential "landscape" of an event evolving according to the designer's intent as well as contingent activity. A potential-energy engine evolves superposed states over simplicial complexes modeling the topological space of metaphorical states.

No matter what how the image is computationally produced, screen-based graphics are still typically presented on a two-dimensional surface like a screen, wall, or electronic paper. The limit of manipulating objects in a two-dimensional graphical display is where each pixel is an independent object. These two observations motivate the development of calligraphic video, textures that can be manipulated by the user using intuitions about physical material such as water, ink, or smoke. We argue for a phenomenological approach to complex visual interaction based on corporeal kinesthetic intuition, and provide an effective way to provide such texture-based interaction using computational physics. A motivating application is to create palpable, highly textured video that can be projected as structured light fields in responsive environments.