Add dashboard

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Tyler Perkins 2022-12-26 20:24:14 -05:00
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<div class="post-2-1">
<div>
<p>Hello again! Its been a while, so I figured I would write about a project I
did this past winter break; my dashboard!</p>
<p>This dashboard is a single TV with Pi that is showing some basic info about
my network and some of the services I run for myself. It really is just a
frontend for a bunch of json API endpoints both inside and outside my
network.</p>
<p>This guy is all written by yours truly using C++ and SDL2. Its quite fast
while running on a Pi3 A. Really the only delays are network delays when it
fetches information.</p>
<p>By far the selling point in my opinion is just how easy it is to create your
own panels if you know some C++, SDL2, and rapidjson (I know thats alot, but
its great for those three people who also know these few libraries). The
general gist is you create a class that inherets from the base panel class,
then add it to an array in config.cpp, and thats it! From then on it will call
a few functions you define (namely update() and draw()) and these will update
the internal state of the object and then update an SDL2 texture which is then
applied to the renderer.</p>
<p>This system is a great example of the tradeoff between customization and
complexity. This system is more complex than an html front end for example,
however it is much more customizable. It allows for anything from custom OpenGL
shaders to determining exatly how your memory of your graphics are managed.</p>
</div>
<div class="col-md">
<figure>
<img src="../img/dashboard-1.jpg" class="fig-img"></img>
<figcaption>The Dashboard on my wall showing weather</figcaption>
</figure>
</div>
</div>
<div>
<div class="col-sm-12">
<p>Speaking of graphics thats another part of this I'm very proud of! I wrote a
<a href="https://git.clortox.com/?p=LRUCache.git;a=summary">custom LRU Cache</a>
just for this application that calls the constructor of the mapped type with
the key as an argument whenever an element is accessed in the cache but it does
not exist. This with a few wrapper classes makes a near no cost abstraction for
memory management of run time generated string textures displayed on screen!
I'm really proud of the performance numbers I got with it.</p>
<p><a href="https://git.clortox.com/?p=dashboard.git;a=summary">Here</a> is a
the git repo on my server and
<a href="https://github.com/Clortox/dashboard">here</a> is a mirror of it on
github. Feel free to try it out and message me with any questions you may have
setting it up! This really feels like the first "complete" project I've done in
terms of lots of planning, design, and a medium amount of complexity and
scale. For this reason, I would like some feedback if you have any!</p>
</div>
</div>
<div class="post-1-1">
<div class="col-md">
<figure>
<img src="../img/dashboard-2.jpg" class="fig-img"></img>
<figcaption>Wifi page</figcaption>
</figure>
</div>
<div class="col-md">
<figure>
<img src="../img/dashboard-3.jpg" class="fig-img"></img>
<figcaption>Home assistant presence page (WIP)</figcaption>
</figure>
</div>
</div>