40 lines
2.0 KiB
Plaintext
40 lines
2.0 KiB
Plaintext
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JUCE Network graphics demo
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==========================
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This example is an app that we threw together to run as a demo of JUCE on our
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booth at CES 2016.
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It allows a collection of heterogeneous devices on a local network to collectively
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draw parts of a large animated vector graphic image that is being generated and
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broadcast by one of the machines (the 'master').
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Each 'slave' device can be positioned within the overall canvas so that if you put
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all of their displays on a wall next to each other and line things up correctly, they
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all form a bigger display. At CES we set up a bunch of machines including a Mac, a
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Linux box, a PC, and some tablets and phones running iOS and Android, to show how the
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same app can run uniformly across all these platforms.
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We wrote a few simple animations to run in this context, mainly around the idea of
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flocking bird-type objects, because this creates a nice effect as they fly between
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each monitor, which helps to create the illusion of a bigger picture.
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Any touchs/mouse-clicks on each slave display are sent back to the master, so that
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it can react to these. In our demos we used this to cause the flock to swarm towards
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the place that was being touched.
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To run it, there's a command line flag "master" that will cause the app to run in
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master-mode. Other instances running without this will act as slaves. The master
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will open a special window that lets you modify the positions of all the networked
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devices by dragging/mouse-wheeling. In this window you can also press cursor
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left/right to select the demo to run.
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These are some interesting bits of code in here - notably a special
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LowLevelGraphicsContext class which allows the content generator to simply
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draw to a Graphics object as you normally would, but instead of painting to the
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screen, everything that is drawn gets serialised into binary packets and broadcast
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over UDP to the slaves, which each render their own part of it.
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The content should be easy to hack - have a look in Demos.h. Have fun tweaking it
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with your own code and ideas!
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