SYSTEM FOR COMPOSITING EDUCATIONAL VIDEO WITH INTERACTIVE, DYNAMICALLY RENDERED VISUAL AIDS

摘要

A framework includes a scene display section configured to display a scene that includes a background layer, a video layer, and a three dimensional graphics layer on top of the video layer; and a rendering module configured as a gatekeeper that adds and removes objects to be included for rendering in the three dimensional graphics layer. The framework includes a video module configured to track playback timing of the video; and a moment module, for creating a data model for a moment having a start time, end time, identifier, and a state, configured to update the state of the moment based on the video playback timing, identified by the identifier and in accordance with the start time and the end time. Objects that are added to be included in rendering, check the state of an associated the moment, and when the state of the moment is enabled, update their display state.