Neuron

Neuron lies across the frame, length pixels from its dendrites to its axon terminals: dendrites branching from the cell body (placed from seed), the axon wrapped in myelin with nodes of Ranvier between the segments, and the terminals. It grows in from delay, and with labels each part is then named above or below it. At each time in impulses the cell body fires and the impulse jumps from node to node along the axon at speed pixels a second; at the terminals it releases neurotransmitter. Gallery scenes: Neuron, and NeuralRelay: three neurons whose terminals touch the next one’s dendrites, each firing as the impulse arrives.

Neuron 9 sPlayUnmuteCopy render command

NeuralRelay 6 sPlayUnmuteCopy render command

use fframes_kit::prelude::*;

fn two_signals<'a>(ui: &mut Ui<'a, '_, '_>) -> Svgr<'a> {
    ui.show(Neuron {
        impulses: vec![2.5, 3.5],
        labels: false,
        ..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).

Neuron

Field	Type	Default	Description
delay	f32	0.0	Seconds after the container’s start before the neuron begins to grow; impulses are not shifted by it.
center	(f64, f64)	(0.0, -0.2)	The middle of the neuron, in units of ui.space.
length	f32	1320.0	Pixels from the dendrite tips to the axon terminals.
impulses	Vec<f32>	vec![4.6, 6.6]	Times in seconds, from the container’s start, when the cell body fires an impulse; empty for none.
speed	f32	700.0	Speed of the impulse along the axon, in pixels per second.
labels	bool	true	Names each part above or below it when true.
seed	u64	5	Seed for the shape of the dendrites and terminals; the same seed gives the same neuron.
body_color	Color	Color::hex("#4dabf7")	Fill of the cell body, dendrites and axon.
nucleus_color	Color	Color::hex("#1c4a7a")	Fill of the nucleus in the cell body.
myelin_color	Color	Color::hex("#ffd8a8")	Fill of the myelin sheath segments.
impulse_color	Color	Color::hex("#ffe066")	Colour of the travelling impulse and the released neurotransmitter.
leader_color	Color	theme.colors.muted	Colour of the leader lines and the dots that mark each named part.
label_color	Color	theme.colors.text	Colour of the part names.
label_style	TextStyle	theme.typography.caption	The font of the part names: family, size in pixels and weight.
enter	Option<FadeIn>	None	Fade in at the start; None for none.
exit	Option<FadeOut>	None	Fade out before the end; None for none.

Feature biology · Source