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2023-01-20libs/rocket: add GNU Rocket submoduleVito Caputo
Preparatory commit for experimenting with a GNU Rocket integration for controlling the stream pipes on a timeline. Since rocket doesn't support things like arbitrary strings, it's not a natural fit for rototiller where the obvious thing would be to describe scene compositions as settings strings as if you were invoking rototiller. But a temporary hack might be to just tell a rocket module up-front all the scenes as settings strings you provide to its setup. Those get assigned numeric identifiers, then rocket tracks can control when they come on/off numerically. It just requires describing all the scenes up front rather than in the pattern editor which is less than ideal. Being able to experiment with this half-ass solution may prove useful anyways, and shouldn't be too much work.
2020-02-03libs/sig: introduce a signal generator abstractionVito Caputo
This adds a small framework of sorts for creating and composing signal generators. Two generators are implemented at this time; sig_ops_sin and sig_ops_mult sig_ops_sin accepts a hz variable and will produce a sine wave of that frequency. sig_ops_mult accepts two sig_t generators and multiplies their outputs Callers may construct their own sig_ops_t ops structs and supply them to sig_new(), but it's expected that libs/sig will grow a collection of commonly used generators which can then be used by simply passing their sig_ops_$foo to sig_new(). See the test code at the bottom of libs/sig/sig.c for some contrived sample usage. Note by composing multiple sig_ops_sin generators with a sig_ops_mult generator, one can already easily construct a synth-like LFO generator. Some obvious todos are to add triangle/sawtooth/square wave generators. More compositional generators may be interesting as well, like additive and subtractive for example. Those will need to implement clipping, as it's expected that the generators *always* stay within unity (0-1). No modules use this yet, but I expect to wire this up to rtv for driving knobs.
2020-01-08libs/puddle: add a classic 2D raindrop sim libVito Caputo
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.
2019-11-18libs/din: add a perlin noise implementationVito Caputo
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.
2019-11-16libs/txt: add minimal ascii text rendererVito Caputo
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.
2019-11-16libs/ascii: add a basic mono bitmap ascii charsetVito Caputo
The rtv module needs to show some captions, so I'm adding a minimal bitmap ascii text renderer.
2018-12-30libs/grid: add grid cellular automata componentVito Caputo
Prep for adding a new module displaying a cellular automata based on the grid component from a multiplayer game I'm working on.
2018-04-03libs: commit missing Makefile.am filesVito Caputo
Oops! This should have made it into b5bc96, been sitting in my tree.
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