65 lines
1.9 KiB
Rust
65 lines
1.9 KiB
Rust
//! Streamers of white on a shifting color backdrop
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use super::delay;
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use house::Harrogate;
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use lights::rgb::{blend, blend_steps, linear_gradient, Rgb};
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use lights::{HardwareRgb, Lights};
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const OFF: Rgb = Rgb(0, 0, 0);
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const GREEN: Rgb = Rgb(0, 200, 0);
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const BLUE: Rgb = Rgb(0, 0, 200);
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const PURPLE: Rgb = Rgb(160, 0, 128);
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const WHITE: Rgb = Rgb(255, 255, 255);
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const PULSE_LEN: usize = 200;
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const SEGMENT_LEN: usize = 35;
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const ZOOM: usize = 10;
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const ZOOM_SEGMENT_LEN: usize = SEGMENT_LEN * ZOOM + ZOOM;
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const HALF_PORCH: usize = 75;
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const FULL_PORCH: usize = 150;
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#[allow(dead_code)]
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#[inline(always)]
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pub fn run(lights: &mut impl Lights<Pixel = HardwareRgb>) -> ! {
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let mut color_pulse = linear_gradient(GREEN, BLUE, PULSE_LEN)
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.chain(linear_gradient(BLUE, PURPLE, PULSE_LEN))
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.chain(linear_gradient(PURPLE, GREEN, PULSE_LEN))
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.cycle();
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let mut t = 0;
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loop {
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// advance "time" for pattern
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t += 1;
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if t > ZOOM_SEGMENT_LEN {
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t = 0;
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}
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let color = color_pulse.next().unwrap_or(Rgb(255, 0, 0));
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let half_pattern_func = |i| {
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let x = (i * ZOOM) + t;
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let x = x % ZOOM_SEGMENT_LEN;
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match x {
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x if x > SEGMENT_LEN * ZOOM => {
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blend_steps(OFF, WHITE, ZOOM, x - SEGMENT_LEN * ZOOM)
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}
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x => blend_steps(WHITE, OFF, SEGMENT_LEN * ZOOM, x),
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}
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};
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let pattern_func = |i| match i {
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i if i < HALF_PORCH => half_pattern_func(i),
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i => half_pattern_func(FULL_PORCH - i),
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};
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Harrogate {
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porch_back: (0..FULL_PORCH).map(|_| color),
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porch_front: (0..FULL_PORCH)
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.map(pattern_func)
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.map(|b| blend(color, WHITE, b)),
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}
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.render_to(lights);
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delay(300_000);
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}
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}
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