FunctionPlot

Cargo featurefeatures = ["math"]

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Axes with a graph, its label and a tracer: a dot that follows a tracked x along the graph, with a dashed line down to the x-axis and the point’s coordinates. Build graph with axes.plot on the same axes. Gallery scene: FunctionPlot.

FunctionPlot demo, first frame — FunctionPlot 4 s

use fframes::animation::KeyFramesAnimation;
use fframes_kit::prelude::*;

fn figure<'a>(ui: &mut Ui<'a, '_, '_>, x: &'a KeyFramesAnimation<f32>) -> Svgr<'a> {
    let axes = Axes {
        x_range: Range::new(-3.0, 3.0, 1.0),
        y_range: Range::new(-1.0, 4.0, 1.0),
        x_length: 9.0,
        y_length: 5.0,
        ..ui.defaults()
    };
    let graph = axes.plot(ui, |x| 0.4 * x * x);
    ui.show(FunctionPlot {
        graph,
        axes,
        label: "0.4 x²".into(),
        label_at: 2.5,
        tracer: Some(x.into()),
        ..ui.defaults()
    })
}

API

Components are plain structs. Set the fields you need and fill the rest with ..ui.defaults(): the defaults below come from the current theme (theme. values are fields of Theme).

FunctionPlot

Field	Type	Default	Description
`axes`	`Axes`	`Axes::themed(theme)`	The axes the graph is drawn on.
`graph`	`FunctionGraph`	`FunctionGraph::themed(theme)`	The curve, built with `Axes::plot` on the same axes.
`label`	`Cow<str>`	`Cow::Borrowed("")`	Written next to the graph at `label_at`, empty for none.
`label_at`	`f64`	`0.0`	The x, in the axes’ coordinates, where the label sits on the graph.
`label_direction`	`Anchor`	`Anchor::TopRight`	Which side of that point the label is placed on.
`label_enter`	`Option<FadeIn>`	`None`	How the label appears; `None` shows it from the start.
`tracer`	`Option<ValueTracker>`	`None`	`x` of the tracer, `None` for no tracer.
`decimals`	`usize`	`2`	Decimals of the coordinates written at the tracer.
`tracer_color`	`Color`	`theme.colors.highlight`	Colour of the tracer dot, its dashed line and its coordinates.
`tracer_enter`	`Option<FadeIn>`	`None`	Fade in of the tracer at the start; `None` for none.
`tracer_exit`	`Option<FadeOut>`	`None`	Fade out of the tracer before the end; `None` for none.

Feature math · Source

See also

Coordinate systems