mirror of
https://gitlab.com/feliix42/embedded-plots.git
synced 2024-11-24 10:46:29 +00:00
109 lines
4.7 KiB
Markdown
109 lines
4.7 KiB
Markdown
# Embedded Plots
|
|
Heapless plotting library for small embedded targets, based on [embedded-graphics](https://crates.io/crates/embedded-graphics)
|
|
crate.
|
|
|
|
Thanks to basing it on `embedded-graphics` crate the library is very portable out of the box.
|
|
It is not dependent on any hardware target.
|
|
To throw it into your project, you only need to have a display that implements `DrawTarget` trait.
|
|
For more details see [DrawTarget](https://docs.rs/embedded-graphics/latest/embedded_graphics/prelude/trait.DrawTarget.html) docs.
|
|
|
|
Bonus feature of `embedded-graphics` is the simulator.
|
|
You can use it to develop your plots without your target hardware, easily create documentation and so on.
|
|
|
|
Library utilizes builder pattern and type states - it allows easy separation of the data and decoration in the target application.
|
|
|
|
## Examples
|
|
### Single plot
|
|
Simple plot example
|
|
#### On color display:
|
|
|
|
#### On monochromatic display:
|
|
|
|
|
|
Code to render:
|
|
```rust
|
|
use embedded_plots::curve::{Curve, PlotPoint};
|
|
use embedded_plots::single_plot::SinglePlot;
|
|
use embedded_plots::axis::Scale;
|
|
use embedded_graphics::geometry::{Point, Size};
|
|
use embedded_graphics::pixelcolor::{RgbColor, Rgb565};
|
|
use embedded_graphics::drawable::Drawable;
|
|
|
|
//simulator dependencies, aka screen driver
|
|
use embedded_graphics_simulator::SimulatorDisplay;
|
|
|
|
let mut display: SimulatorDisplay<Rgb565> = SimulatorDisplay::new(Size::new(480, 272));
|
|
let data = vec![
|
|
PlotPoint { x: 0, y: 0 },
|
|
PlotPoint { x: 1, y: 2 },
|
|
PlotPoint { x: 2, y: 2 },
|
|
PlotPoint { x: 3, y: 0 },
|
|
];
|
|
let curve = Curve::from_data(data.as_slice());
|
|
|
|
let plot = SinglePlot::new(
|
|
&curve,
|
|
Scale::RangeFraction(3),
|
|
Scale::RangeFraction(2))
|
|
.into_drawable(
|
|
Point { x: 50, y: 10 },
|
|
Point { x: 430, y: 250 })
|
|
.set_color(RgbColor::YELLOW)
|
|
.set_text_color(RgbColor::WHITE);
|
|
|
|
plot.draw(&mut display).unwrap();
|
|
```
|
|
|
|
### Axis
|
|
You can also use axis on its own, it looks like this:
|
|
|
|
Code to render example axis:
|
|
```rust
|
|
use embedded_plots::axis::{Axis, Scale, Placement};
|
|
use embedded_graphics::pixelcolor::{RgbColor, Rgb565};
|
|
use embedded_graphics::drawable::Drawable;
|
|
use embedded_graphics::geometry::Size;
|
|
|
|
//simulator dependencies, aka screen driver
|
|
use embedded_graphics_simulator::SimulatorDisplay;
|
|
use embedded_graphics::style::TextStyleBuilder;
|
|
use embedded_graphics::fonts::Font6x8;
|
|
|
|
let mut display: SimulatorDisplay<Rgb565> = SimulatorDisplay::new(Size::new(480, 272));
|
|
|
|
let text_style_white = TextStyleBuilder::new(Font6x8)
|
|
.text_color(RgbColor::WHITE)
|
|
.build();
|
|
Axis::new(0..100)
|
|
.set_title("Title")
|
|
.set_scale(Scale::Fixed(10))
|
|
.into_drawable_axis(Placement::X { x1: 40, x2: 230, y: 10 })
|
|
.set_text_style(text_style_white)
|
|
.set_color(RgbColor::WHITE)
|
|
.draw(&mut display).unwrap();
|
|
```
|
|
For more details, see `free_axis` example
|
|
|
|
## Current limitations and future plans
|
|
This is very beginning of the development, however it is functional to the point where single plot can be drawn.
|
|
|
|
Main issue for now is that you need to predict on how much space will be occupied by axis ticks,
|
|
numbers and titles, points passed to `.into_drawable()` are the boundaries for which curve is scaled.
|
|
This will be fixed, please be prepared for it since it might be a breaking change for you.
|
|
|
|
#### Main features planned soon:
|
|
* Drawing multiple curves that share the same X and Y domains on a single plot (take curves slice instead of single curve)
|
|
* Dual plot - drawing curves that have two separate domains (either only on one axis or both).
|
|
Axis on both sides, left and right (or top and bottom) will be drawn with color corresponding to plot
|
|
* Support for floating point domains
|
|
* Support for fixed point curve data with intermediate floating point scales (to avoid floating point calculations for each drawn point)
|
|
|
|
#### Features I'd love to see in the future:
|
|
* Partial redrawing - possibility to substitute data and detect which parts of the screen needs to be redrawed
|
|
* Oscilloscope style live mode (adding new points without any redrawing, no data retention)
|
|
* Cursors - manual and math based (max,min,avg and so on...)
|
|
|
|
## Contributions
|
|
Contributions are more than welcome, if you have particular improvement, raise an issue or submit merge request on project's Gitlab page.
|
|
|
|
If you just want to help but don't have anything specific in mind, please take a look at [issue tracker](https://gitlab.com/mchodzikiewicz/embedded-plots/-/issues) and pick one.
|