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These were commonish in the 90s demo days, done as a library to encourage
use by different modules.
You can simply render this directly onto a frame buffer like the old days,
or sample it as a height map or density field for more complex compositions.
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This is a 3D noise field addressed as a unit cube.
The caller supplies the resolution of the noise field in three
dimensions.
I've just pulled in my v3f.h here, but it probably makes sense to
later on move vector headers into libs/ and share them. Later.
It's called din as in noise, because it's shorter than perlin and
noise.
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This is as basic as it gets, the only fanciness is it recognizes
newlines and supports horizontal and vertical justification.
As this is intended to be run from potentially threaded fragmenter
renderers, it receives a fragment and *frame* coordinates for the
text to be rendered. If the text doesn't land in the given fragment,
nothing gets drawn.
Currently this is not optimized at all. There's a stubbed out rect
overlap test function which could be used to avoid entering the
text rendering loop for fragments with zero overlap, that's an obvious
low-hanging fruit optimization. After that, skipping characters
that don't overlap would be another obvious thing.
As-is the text render loop is always entered and the bounds-checked
put pixel helper is used. So every fragment will incur the cost of
rendering the full string, even when it's not visible.
For the rtv captions this isn't a particularly huge deal, but stuff
to improve upon in the future.
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The rtv module needs to show some captions, so I'm adding a minimal
bitmap ascii text renderer.
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Prep for adding a new module displaying a cellular automata
based on the grid component from a multiplayer game I'm working
on.
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Oops! This should have made it into b5bc96, been sitting
in my tree.
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