vis-layer

 

Portable Visualization Layer

Scales from mobile devices to high resolution displays

The visualization component of ViSUS was built with the philosophy that a single code base can be designed to run on a variety of platforms and hardware ranging from mobile devices to powerwall displays. To enable this portability, the basic draw routines were designed to be OpenGL ES compatible. This is a limited subset of OpenGL used primarily for mobile devices. More advanced draw routines can be enabled if a system's hardware can support it. In this way, the data visualization can scale in quality depending on the available hardware. Beyond the display of the data, the underlying GUI library can hinder portability to multiple devices. At this time ViSUS has made use of the Juce library which is lightweight and supports mobile platforms such as iOS and Android in addition to major operating systems. ViSUS provides a demo viewer which contains standard visualizations such as slicing, volume rendering and isosurfacing. Similarly to the example LightStream modules, these routines can be expanded through a well-defined API. Additionally, the base system can display 2D and 3D time- varying data. As mentioned above, each of these visualizations can operate on the end result of a LightStream dataflow. The system considers a 2D dataset as a special case of a slice renderer and therefore the same code base is used for 2D and 3D datasets. Combining all of the above design decisions allows the same code base to be used on multiple platforms seamlessly for data of arbitrary dimensions.