Processes for reviewing and editing a computer-generated animation are provided. In one example process, multiple images representing segments of a computer-generated animation may be displayed. In response to a selection of one or more of the images, geometry data associated with the corresponding segment(s) of computer-generated animation may be accessed. An editable geometric representation of the selected segment(s) of computer-generated animation may be displayed based on the accessed geometry data. In some examples, previously rendered representations and/or geometric representations of the same or other segments of the computer-generated animation may be concurrently displayed adjacent to, overlaid with, or in any other desired manner with the displayed geometric representation of the selected segment's) of computer-generated animation.

A method including defining, in a buffer, a particle having an initial position in an absolute coordinate system independent of a graphical user interface (GUI) in which the particle is renderable. The method also includes assigning a memory range within the buffer to the particle. The method also includes generating, in the memory range, an updated position in the absolute coordinate system for the particle. The method also includes determining, in the memory range and from a combination of the initial position and the updated position, vertices for the particle. The method also includes creating, from vertices, a particle trail for the particle in the absolute coordinate system. The method also includes storing the particle trail in the memory range within the buffer.

Biometric enabled virtual reality (VR) systems and methods are disclosed for detecting user intention(s) and modulating virtual avatar control based on the user intention(s) for creation of virtual avatar(s) or object(s) in holographic space, two-dimensional (2D) virtual space, or three-dimensional (3D) virtual space. A virtual representation of an intended motion of a user corresponding to an intention of muscle activation of the user is determined based on analysis of a biometric signal data of the user as collected by a biometric detection device. The virtual representation of the intended motion is used to modulate virtual avatar control or output to create at least one of a virtual avatar representing aspect(s) of the user or an object manipulated by the user in a holographic space, virtual 2D space, or virtual 3D space. The avatar or the object is created based on: (1) the biometric signal data of a user, or (2) user-specific specifications as provided by the user.

In accordance with some embodiments, a computer-implemented method is performed at a portable multifunction device with a touch screen display. The computer-implemented method includes: displaying a home menu comprising a plurality of application launch icons; detecting activation of any respective application launch icon; and, in response to detecting the activation, displaying a first animation of a transition from display of the home menu to display of an application that corresponds to the activated application launch icon. The first animation comprises expanding an image of the application.

In accordance with some embodiments, a computer-implemented method is performed at a portable multifunction device with a touch screen display. The computer-implemented method includes: displaying a home menu comprising a plurality of application launch icons; detecting activation of any respective application launch icon; and, in response to detecting the activation, displaying a first animation of a transition from display of the home menu to display of an application that corresponds to the activated application launch icon. The first animation comprises expanding an image of the application.

A tracked device may be used in an extended reality system in coordination with a tracking device. The tracked device may be ordinarily difficult to track, for example due to changing appearances or relatively small surface areas of unchanging features, as may be the case with an electronic device with a relatively large display surrounded by a thin physical outer boundary. In these cases, the tracked device may periodically present an image to the tracking device that the tracking device stores as an indication to permit tracking of a known, unchanging feature despite the image not being presented continuously on the display of the tracked device. The image may include a static image, designated tracking data overlaid on an image frame otherwise scheduled for presentation, or extracted image features from the image frame otherwise scheduled for presentation. Additional power saving methods and known marker generation methods are also described.

A tracked device may be used in an extended reality system in coordination with a tracking device. The tracked device may be ordinarily difficult to track, for example due to changing appearances or relatively small surface areas of unchanging features, as may be the case with an electronic device with a relatively large display surrounded by a thin physical outer boundary. In these cases, the tracked device may periodically present an image to the tracking device that the tracking device stores as an indication to permit tracking of a known, unchanging feature despite the image not being presented continuously on the display of the tracked device. The image may include a static image, designated tracking data overlaid on an image frame otherwise scheduled for presentation, or extracted image features from the image frame otherwise scheduled for presentation. Additional power saving methods and known marker generation methods are also described.

A portable electronic device displays icons (e.g., graphical objects) in one or more regions of a user interface of a touch-sensitive display, and detects user input specifying an exchange of positions of icons in the user interface. In some aspects, the respective positions of two icons in a user interface can be selected to exchange positions in the one or more regions of the user interface, and one or both icons can change their visual appearance to indicate their selection status.

Systems, methods and computer-readable storage media that be used to configure an animated content item based on a position of the animated content item within a viewport of a computing device upon which the animated content item is presented. One method includes providing, to a first computing device, an animation configuration interface configured to allow selection via the first computing device of a position-dependent setting comprising a position within the viewport at which a property of the animated content item changes. The method further includes receiving, by a second computing device, the position-dependent setting and configuring the property of the animated content item based on the position-dependent setting such that the animated content item is configured to change the property when presented within a viewport of the second computing device at the position of the viewport in accordance with the position-dependent setting.

Systems, methods and computer-readable storage media that be used to configure an animated content item based on a position of the animated content item within a viewport of a computing device upon which the animated content item is presented. One method includes providing, to a first computing device, an animation configuration interface configured to allow selection via the first computing device of a position-dependent setting comprising a position within the viewport at which a property of the animated content item changes. The method further includes receiving, by a second computing device, the position-dependent setting and configuring the property of the animated content item based on the position-dependent setting such that the animated content item is configured to change the property when presented within a viewport of the second computing device at the position of the viewport in accordance with the position-dependent setting.