Abstract: A recalculation user interface that includes visualization controls that display in response to received data, and signal capture controls that capture corresponding environment signals upon detection of a corresponding event. A declarative transformation chain is positioned between the various controls. Examples of environmental signals captured by the signal capture controls include image, video, audio, orientation, biometrics, location, weather, or any other information about the environment. Incorporating such signal capture controls into the recalculation user interface thus allows captured environmental signals to be incorporated into the logic and other data of the transformation chain. Also, an authoring tool that permits authoring of such recalculation user interfaces is described.