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The Master Controller, Signal Processor and Playback Simulator can all run on any machine with Java installed, such as a Mac or Windows PC. The Node Playback Engine uses a plug-in architecture to do the actual rendering, and there are currently two renderer implementations. One uses QuickTime 6 and JOGL (the Java OpenGL for Gaming API) and would in theory work under either Mac or Windows, though to date it has only been tested on the Mac, while the other uses the newer QuickTime 7 OpenGL Context API, which gives better performance but is only available under Mac OS X 10.4. LuP苹果软件下载站

LuP苹果软件下载站

 LuP苹果软件下载站

Conclusion

The Threshold architecture is highly flexible. Although initially designed with the 22-screen "Wave" at Perth Concert Hall in mind, the architecture is inherently scalable. Any number of nodes and screens, of any resolution, can be arranged on a canvas as required, with a simple configuration file governing the placement of the screens. Several different canvas arrangements can be defined and selected from the Master Controller, for example with or without a mullion gap between screens, with the toilet and projector screens as separate canvases or linked to the main canvas, or even optionally splitting the main canvas into two smaller areas and playing different shows on each. Various options (such as stretching, cropping or letterboxing the image) are available if a show doesn't match the aspect ratio of the canvas it's being shown on. The Threshold software is extensible, for example new renderers can be written for different types of output hardware, and the XML show syntax could be extended to support new capabilities. LuP苹果软件下载站

The system is also designed to be robust. Once started, each node carries on playing its show without direct input from the controller, apart from an occasional 'time synch' command to ensure the playback on the different screens doesn't drift out of synchronisation relative to each other (by more than a few milliseconds). If the software on one particular node should crash for any reason, a monitor process will automatically relaunch the playback engine and quickly resume playing from the point the rest of the system has reached. Likewise, the controller software can be shut down and relaunched, on another machine even, and regain control of the running system without interrupting any show that is playing. LuP苹果软件下载站

For further details about Threshold, please contact Russell Henderson at 55 degrees ltd. LuP苹果软件下载站