Abstract: In embodiments of drawing HTML elements, an HTML drawing application (108) can receive, via a drawing area interface (112), drawing-input (208) to specify a size and a location of an HTML element (210) to be created in an HTML page (202). The HTML drawing application (108) can then initiate a display of visual feedback on a drawing surface (116) that overlays the HTML page (202) in the drawing area interface (112) as the drawing-input (208) is received, and create the HTML element in the HTML page based on the size and the location specified by the drawing-input. In some embodiments, the drawing surface (116) is an HTML5 canvas element.

Abstract: In embodiments of drawing HTML elements, an HTML drawing application (108) can enable, via a drawing area interface (112), display of an HTML page (402) and one or more HTML elements in the HTML page. The HTML drawing application (108) can then receive a selection of an HTML element (404) in the HTML page (402), and initiate display of visual feedback (410) on a drawing surface (116) that overlays the HTML page (402) to indicate that the selected HTML element (404) is selected. In other embodiments, the HTML drawing application (108) can initiate display of visual feedback (508) on the drawing surface (116) that overlays an HTML page (502) to indicate that an HTML element (504) can be edited. In some embodiments, the drawing surface (116) is an HTML5 canvas element.

Abstract: An animation-authoring environment includes a graphical user interface usable by a user to define an initial key frame, including one or more scene entities with one or more respective physics properties. The authoring environment generates a sequence of extrapolated frames from the initial key frame by using a physics simulation to extrapolate respective motion paths for scene entities in the key frame and configuring each frame in the generated sequence to depict each such scene entity at a successive location along its respective extrapolated motion path. The authoring environment may then produce a movie comprising the sequence of frames.