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3
run_pa.sh
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@ -1,3 +0,0 @@
#!/bin/sh
parec --raw --rate 48000 --format=s16ne --channels=1 | target/release/musiclight

433
src/animation.rs
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@ -11,11 +11,6 @@ use crate::signal_processing::SignalProcessing;
type Result<T> = std::result::Result<T, AnimationError>;
pub mod particles;
pub mod sparkles;
pub mod racers;
pub mod fire;
/////////// Error Type and Implementation ////////////
#[derive(Debug)]
@ -129,3 +124,431 @@ pub trait Animation {
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS];
}
/////////// Animation implementations ////////////
pub mod particles
{
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99995;
const RGB_EXPONENT : f32 = 1.8;
const W_EXPONENT : f32 = 2.2;
const FADE_FACTOR : f32 = 0.98;
const AVG_LEDS_ACTIVATED : f32 = 0.02;
const WHITE_EXTRA_SCALE : f32 = 0.5;
const CONDENSATION_FACTOR : f32 = 5.0;
pub struct Particles
{
energy : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
max_energy : Color,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Particles
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Particles
{
Particles {
energy: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
}
}
fn init(&mut self) -> Result<()>
{
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if cur_energy.r > self.max_energy.r {
self.max_energy.r = cur_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if cur_energy.g > self.max_energy.g {
self.max_energy.g = cur_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if cur_energy.b > self.max_energy.b {
self.max_energy.b = cur_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if cur_energy.w > self.max_energy.w {
self.max_energy.w = cur_energy.w;
}
// fade all LEDs towards black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.energy[strip][led].scale(FADE_FACTOR);
}
}
// distribute the energy for each color
let new_energy = Color{
r: (cur_energy.r / self.max_energy.r).powf(RGB_EXPONENT),
g: (cur_energy.g / self.max_energy.g).powf(RGB_EXPONENT),
b: (cur_energy.b / self.max_energy.b).powf(RGB_EXPONENT),
w: (cur_energy.w / self.max_energy.w).powf(W_EXPONENT),
};
let mut remaining_energy = new_energy;
remaining_energy.scale(AVG_LEDS_ACTIVATED * config::NUM_LEDS_TOTAL as f32);
let mut rng = rand::thread_rng();
for coloridx in 0..=3 {
let new_energy_ref = new_energy.ref_by_index(coloridx).unwrap();
let rem_energy_ref = remaining_energy.ref_by_index_mut(coloridx).unwrap();
while *rem_energy_ref > 0.0 {
let mut rnd_energy = rng.gen::<f32>() * (*new_energy_ref) * CONDENSATION_FACTOR;
let rnd_strip = rng.gen_range(0..config::NUM_STRIPS);
let rnd_led = rng.gen_range(0..config::NUM_LEDS_PER_STRIP);
if rnd_energy > *rem_energy_ref {
rnd_energy = *rem_energy_ref;
*rem_energy_ref = 0.0;
} else {
*rem_energy_ref -= rnd_energy;
}
let led_ref = self.energy[rnd_strip][rnd_led].ref_by_index_mut(coloridx).unwrap();
*led_ref += rnd_energy;
}
}
// color post-processing
self.colorlists = self.energy;
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].w *= WHITE_EXTRA_SCALE;
self.colorlists[strip][led].limit();
}
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}
}
pub mod sparkles
{
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use std::collections::VecDeque;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99995;
const RGB_EXPONENT : f32 = 1.5;
const W_EXPONENT : f32 = 2.2;
const FADE_FACTOR : f32 = 0.97;
const AVG_LEDS_ACTIVATED : f32 = 0.03;
const WHITE_EXTRA_SCALE : f32 = 0.3;
const CONDENSATION_FACTOR : f32 = 5.0;
const SPARK_FADE_STEP : f32 = 2.500 / config::FPS_ANIMATION;
const SPARK_VSPEED_MIDS : f32 = 1.000 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
const SPARK_VSPEED_HIGHS : f32 = 0.800 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
const SPARK_VSPEED_XHIGHS : f32 = 0.500 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
/*
* A spark is a point of light that can move vertically along the LED strips.
*/
struct Spark
{
pub vspeed: f32, // LEDs per frame
pub brightness: f32,
pub color: Color,
strip: u16,
led: f32,
has_expired: bool,
}
impl Spark
{
pub fn new(vspeed: f32, brightness: f32, color: Color, strip: u16, led: f32) -> Spark
{
Spark {
vspeed: vspeed,
brightness: brightness,
color: color,
strip: strip,
led: led,
has_expired: false
}
}
pub fn update(&mut self)
{
if self.has_expired {
return;
}
self.led += self.vspeed;
self.brightness -= SPARK_FADE_STEP;
if (self.led >= config::NUM_LEDS_PER_STRIP as f32) || (self.led <= -1.0) {
// moved outside of the LED array -> no need to update this any more
self.has_expired = true;
}
if self.brightness <= 0.0 {
// moved outside of the LED array -> no need to update this any more
self.has_expired = true;
}
}
pub fn has_expired(&self) -> bool
{
self.has_expired
}
pub fn render(&self, colorlists: &mut [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS])
{
if self.has_expired {
// do not render if this Spark has expired
return;
}
let fract_led = self.led - self.led.floor();
let led1_idx = self.led.floor() as i32;
let led2_idx = self.led.ceil() as usize;
let led1_color = self.color.scaled_copy(fract_led * self.brightness);
let led2_color = self.color.scaled_copy((1.0 - fract_led) * self.brightness);
if led1_idx >= 0 {
colorlists[self.strip as usize][led1_idx as usize].add(&led1_color);
}
if led2_idx < config::NUM_LEDS_PER_STRIP {
colorlists[self.strip as usize][led2_idx as usize].add(&led2_color);
}
}
}
pub struct Sparkles
{
max_energy : Color,
sparks : VecDeque<Spark>,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Sparkles
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Sparkles
{
Sparkles {
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
sparks: VecDeque::with_capacity(1024),
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
}
}
fn init(&mut self) -> Result<()>
{
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if cur_energy.r > self.max_energy.r {
self.max_energy.r = cur_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if cur_energy.g > self.max_energy.g {
self.max_energy.g = cur_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if cur_energy.b > self.max_energy.b {
self.max_energy.b = cur_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if cur_energy.w > self.max_energy.w {
self.max_energy.w = cur_energy.w;
}
// fade all LEDs towards black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].scale(FADE_FACTOR);
}
}
// distribute the energy for each color
let new_energy = Color{
r: (cur_energy.r / self.max_energy.r).powf(RGB_EXPONENT),
g: (cur_energy.g / self.max_energy.g).powf(RGB_EXPONENT),
b: (cur_energy.b / self.max_energy.b).powf(RGB_EXPONENT),
w: (cur_energy.w / self.max_energy.w).powf(W_EXPONENT),
};
let mut remaining_energy = new_energy.r;
remaining_energy *= AVG_LEDS_ACTIVATED * config::NUM_LEDS_TOTAL as f32;
let mut rng = rand::thread_rng();
// Red (bass) uses exactly the same algorithm as for the “Particles” animation.
while remaining_energy > 0.0 {
let mut rnd_energy = rng.gen::<f32>() * new_energy.r * CONDENSATION_FACTOR;
let rnd_strip = rng.gen_range(0..config::NUM_STRIPS);
let rnd_led = rng.gen_range(0..config::NUM_LEDS_PER_STRIP);
if rnd_energy > remaining_energy {
rnd_energy = remaining_energy;
remaining_energy = 0.0;
} else {
remaining_energy -= rnd_energy;
}
self.colorlists[rnd_strip][rnd_led].r += rnd_energy;
}
// update all existing sparks
self.sparks.iter_mut().for_each(|x| x.update());
// Create green sparks for middle frequencies.
// They originate in the center and can go both up and down from there.
self.sparks.push_back(Spark::new(
match rng.gen::<bool>() {
true => SPARK_VSPEED_MIDS,
false => -SPARK_VSPEED_MIDS,
},
new_energy.g,
Color{r: 0.0, g: 1.0, b: 0.0, w: 0.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
(config::NUM_LEDS_PER_STRIP as f32 / 2.0) - 0.5));
// Create blue sparks for high frequencies.
// They originate either in the top, moving down, or in the bottom, moving up
{
let start_from_top = rng.gen::<bool>();
let start_led = match start_from_top {
true => config::NUM_LEDS_PER_STRIP-1,
false => 0} as f32;
let vspeed = match start_from_top {
true => -SPARK_VSPEED_HIGHS,
false => SPARK_VSPEED_HIGHS};
self.sparks.push_back(Spark::new(
vspeed,
new_energy.b,
Color{r: 0.0, g: 0.0, b: 1.0, w: 0.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
start_led));
}
// Create white sparks for very high frequencies.
// They originate either in the top, moving down, or in the bottom, moving up
{
let start_from_top = rng.gen::<bool>();
let start_led = match start_from_top {
true => config::NUM_LEDS_PER_STRIP-1,
false => 0} as f32;
let vspeed = match start_from_top {
true => -SPARK_VSPEED_XHIGHS,
false => SPARK_VSPEED_XHIGHS};
self.sparks.push_back(Spark::new(
vspeed,
new_energy.w * WHITE_EXTRA_SCALE,
Color{r: 0.0, g: 0.0, b: 0.0, w: 1.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
start_led));
}
// remove expired sparks in the beginning of the deque
while self.sparks.front().map_or(false, |s| s.has_expired()) {
self.sparks.pop_front();
}
// render all remaining sparks
for spark in self.sparks.iter() {
spark.render(&mut self.colorlists);
}
// color post-processing
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].limit();
}
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}
}

185
src/animation/fire.rs
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@ -1,185 +0,0 @@
// vim: noet
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use std::collections::VecDeque;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99995;
const MAX_ENERGY_PROPAGATION : f32 = 0.4;
const RM_ENERGY_SUB : f32 = 0.011;
const RM_ENERGY_MULT : f32 = 0.995;
const EXPONENT : f32 = 1.50;
const W_EXPONENT : f32 = 2.20;
const W_SCALE : f32 = 0.3;
const OVERDRIVE : f32 = 0.3;
// A single-color flame.
// This struct contains the energy generation and propagation algorithm.
pub struct Flame
{
energy: [ [f32; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
}
impl Flame
{
fn new() -> Flame
{
Flame {
energy: [ [0.0; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
}
}
fn update(&mut self, new_energy: f32)
{
let mut rng = rand::thread_rng();
for strip in 0..config::NUM_STRIPS {
// Add new energy in the bottom row
self.energy[strip][0] += rng.gen::<f32>() * new_energy;
// Remove energy at the top
self.energy[strip][config::NUM_LEDS_PER_STRIP-1] *= 1.0 - rng.gen::<f32>() * MAX_ENERGY_PROPAGATION;
// move energy upwards
for led_out in (1..config::NUM_LEDS_PER_STRIP).rev() {
let led_in = led_out - 1;
let energy_moved = self.energy[strip][led_in] * rng.gen::<f32>() * MAX_ENERGY_PROPAGATION;
self.energy[strip][led_in] -= energy_moved;
self.energy[strip][led_out] += energy_moved;
}
// globally remove energy
for led in 0..config::NUM_LEDS_PER_STRIP {
self.energy[strip][led] *= RM_ENERGY_MULT;
if self.energy[strip][led] > RM_ENERGY_SUB {
self.energy[strip][led] -= RM_ENERGY_SUB;
} else {
self.energy[strip][led] = 0.0;
}
}
}
}
fn print(&self)
{
println!("-----");
for led in 0..config::NUM_LEDS_PER_STRIP {
for strip in 0..config::NUM_STRIPS {
print!("{:8.3} ", self.energy[strip][led]);
}
println!();
}
println!("-END-");
}
fn get_energy(&self, strip: usize, led: usize) -> f32
{
self.energy[strip][led]
}
}
// Merges multiple single-colored flames in a multi-colored one.
pub struct Fire
{
r_flame: Flame,
g_flame: Flame,
b_flame: Flame,
w_flame: Flame,
max_energy: Color,
colorlists: [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Fire
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Fire
{
Fire {
r_flame: Flame::new(),
g_flame: Flame::new(),
b_flame: Flame::new(),
w_flame: Flame::new(),
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
}
}
fn init(&mut self) -> Result<()>
{
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if cur_energy.r > self.max_energy.r {
self.max_energy.r = cur_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if cur_energy.g > self.max_energy.g {
self.max_energy.g = cur_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if cur_energy.b > self.max_energy.b {
self.max_energy.b = cur_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if cur_energy.w > self.max_energy.w {
self.max_energy.w = cur_energy.w;
}
// update the flames
self.r_flame.update((cur_energy.r / self.max_energy.r).powf(EXPONENT));
self.g_flame.update((cur_energy.g / self.max_energy.g).powf(EXPONENT));
self.b_flame.update((cur_energy.b / self.max_energy.b).powf(EXPONENT));
self.w_flame.update((cur_energy.w / self.max_energy.w).powf(W_EXPONENT));
//self.r_flame.print();
// color rendering and post-processing
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led] = Color {
r: self.r_flame.get_energy(strip, led),
g: self.g_flame.get_energy(strip, led),
b: self.b_flame.get_energy(strip, led),
w: self.w_flame.get_energy(strip, led) * W_SCALE
};
self.colorlists[strip][led].limit();
}
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}

139
src/animation/particles.rs
View file

@ -1,139 +0,0 @@
// vim: noet
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99980;
const RGB_EXPONENT : f32 = 1.8;
const W_EXPONENT : f32 = 2.2;
const FADE_FACTOR : f32 = 0.98;
const AVG_LEDS_ACTIVATED : f32 = 0.02;
const WHITE_EXTRA_SCALE : f32 = 0.5;
const CONDENSATION_FACTOR : f32 = 5.0;
pub struct Particles
{
energy : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
max_energy : Color,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Particles
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Particles
{
Particles {
energy: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
}
}
fn init(&mut self) -> Result<()>
{
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if cur_energy.r > self.max_energy.r {
self.max_energy.r = cur_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if cur_energy.g > self.max_energy.g {
self.max_energy.g = cur_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if cur_energy.b > self.max_energy.b {
self.max_energy.b = cur_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if cur_energy.w > self.max_energy.w {
self.max_energy.w = cur_energy.w;
}
// fade all LEDs towards black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.energy[strip][led].scale(FADE_FACTOR);
}
}
// distribute the energy for each color
let new_energy = Color{
r: (cur_energy.r / self.max_energy.r).powf(RGB_EXPONENT),
g: (cur_energy.g / self.max_energy.g).powf(RGB_EXPONENT),
b: (cur_energy.b / self.max_energy.b).powf(RGB_EXPONENT),
w: (cur_energy.w / self.max_energy.w).powf(W_EXPONENT),
};
let mut remaining_energy = new_energy;
remaining_energy.scale(AVG_LEDS_ACTIVATED * config::NUM_LEDS_TOTAL as f32);
let mut rng = rand::thread_rng();
for coloridx in 0..=3 {
let new_energy_ref = new_energy.ref_by_index(coloridx).unwrap();
let rem_energy_ref = remaining_energy.ref_by_index_mut(coloridx).unwrap();
while *rem_energy_ref > 0.0 {
let mut rnd_energy = rng.gen::<f32>() * (*new_energy_ref) * CONDENSATION_FACTOR;
let rnd_strip = rng.gen_range(0..config::NUM_STRIPS);
let rnd_led = rng.gen_range(0..config::NUM_LEDS_PER_STRIP);
if rnd_energy > *rem_energy_ref {
rnd_energy = *rem_energy_ref;
*rem_energy_ref = 0.0;
} else {
*rem_energy_ref -= rnd_energy;
}
let led_ref = self.energy[rnd_strip][rnd_led].ref_by_index_mut(coloridx).unwrap();
*led_ref += rnd_energy;
}
}
// color post-processing
self.colorlists = self.energy;
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].w *= WHITE_EXTRA_SCALE;
self.colorlists[strip][led].limit();
}
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}

391
src/animation/racers.rs
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@ -1,391 +0,0 @@
// vim: noet
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99980;
const RGB_EXPONENT : f32 = 1.5;
const W_EXPONENT : f32 = 2.2;
const W_SCALE : f32 = 0.3;
const ENERGY_FILTER_ALPHA : f32 = 0.20;
const BRIGHTNESS_FILTER_ALPHA : f32 = 0.002;
const NUM_RACERS_R : usize = 10 * config::NUM_LEDS_TOTAL / 300;
const NUM_RACERS_G : usize = 10 * config::NUM_LEDS_TOTAL / 300;
const NUM_RACERS_B : usize = 10 * config::NUM_LEDS_TOTAL / 300;
const RACER_MIN_SPEED_R : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_R : f32 = 80.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_R : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_R : f32 = 1.00;
const RACER_MIN_SPEED_G : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_G : f32 = 80.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_G : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_G : f32 = 1.00;
const RACER_MIN_SPEED_B : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_B : f32 = 80.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_B : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_B : f32 = 1.00;
const SPEED_SCALE_RANGE : f32 = 0.10;
fn dbg_bar(min: f32, current: f32, max: f32)
{
const LEN: usize = 60;
let mut bar = ['.'; LEN];
let minpos = ((LEN as f32) * min / max) as usize;
let curpos = ((LEN as f32) * current / max) as usize;
for idx in minpos..LEN {
bar[idx] = '-';
}
if curpos < LEN {
bar[curpos] = '#';
}
print!("{}", bar.iter().collect::<String>());
}
/*
* A racer is a point of light that can move along the LED strips.
*/
struct Racer
{
min_speed: f32, // LEDs per frame
max_speed: f32, // LEDs per frame
direction: i8, // either +1 or -1
min_brightness: f32,
max_brightness: f32,
color: Color,
pos: f32,
brightness: f32,
flare_brightness: f32,
}
impl Racer
{
pub fn new(min_speed: f32, max_speed: f32, min_brightness: f32, max_brightness: f32, color: Color, start_pos: f32, direction: i8) -> Racer
{
Racer {
min_speed: min_speed,
max_speed: max_speed,
min_brightness: min_brightness,
max_brightness: max_brightness,
direction: direction,
color: color,
pos: start_pos,
brightness: min_brightness,
flare_brightness: 0.0,
}
}
fn _pos2ledstrip(pos: i32) -> (i32, i32)
{
let strip = pos / (config::NUM_LEDS_PER_STRIP as i32);
let mut led = pos % (config::NUM_LEDS_PER_STRIP as i32);
if (strip % 2) == 1 {
led = (config::NUM_LEDS_PER_STRIP as i32) - led - 1;
}
(strip, led)
}
pub fn update(&mut self, speed: f32, brightness: f32, flare_brightness: f32)
{
// move along the strip
let cur_speed = self.min_speed + speed * (self.max_speed - self.min_speed);
self.pos += (self.direction as f32) * cur_speed;
let maxpos = config::NUM_LEDS_TOTAL as f32;
// if the end is reached, reverse the direction
if self.pos >= maxpos {
self.direction = -1;
self.pos = 2.0 * maxpos - self.pos;
} else if self.pos <= 0.0 {
self.direction = 1;
self.pos = -self.pos;
}
self.brightness = brightness;
self.flare_brightness = flare_brightness;
}
pub fn render(&self, colorlists: &mut [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS])
{
let brightness = self.min_brightness + self.brightness * (self.max_brightness - self.min_brightness);
let fract_led = self.pos - self.pos.floor();
let led1_idx = self.pos.floor() as i32;
let led2_idx = self.pos.ceil() as i32;
let mut color = self.color;
color.w += self.flare_brightness;
let led1_color = color.scaled_copy((1.0 - fract_led) * brightness);
let led2_color = color.scaled_copy(fract_led * brightness);
if led1_idx >= 0 && led1_idx < (config::NUM_LEDS_TOTAL as i32) {
let (strip, led) = Racer::_pos2ledstrip(led1_idx);
colorlists[strip as usize][led as usize].add(&led1_color);
}
if led2_idx >= 0 && led2_idx < (config::NUM_LEDS_TOTAL as i32) {
let (strip, led) = Racer::_pos2ledstrip(led2_idx);
colorlists[strip as usize][led as usize].add(&led2_color);
}
}
}
pub struct Racers
{
max_energy : Color,
min_energy : Color,
filtered_energy : Color,
filtered_brightness : Color,
racers_r : Vec<Racer>,
racers_g : Vec<Racer>,
racers_b : Vec<Racer>,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
frame_count: usize,
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Racers
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Racers
{
Racers {
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
min_energy: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
filtered_energy: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
filtered_brightness: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
racers_r: Vec::with_capacity(NUM_RACERS_R),
racers_g: Vec::with_capacity(NUM_RACERS_G),
racers_b: Vec::with_capacity(NUM_RACERS_B),
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
frame_count: 0,
}
}
fn init(&mut self) -> Result<()>
{
let mut rng = rand::thread_rng();
for _i in 0 .. NUM_RACERS_R {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_r.push(Racer::new(
RACER_MIN_SPEED_R * speed_scale,
RACER_MAX_SPEED_R * speed_scale,
RACER_MIN_BRIGHTNESS_R,
RACER_MAX_BRIGHTNESS_R,
Color{r: 1.0, g: 0.0, b: 0.0, w: 0.0},
start_pos,
dir));
}
for _i in 0 .. NUM_RACERS_G {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_g.push(Racer::new(
RACER_MIN_SPEED_G * speed_scale,
RACER_MAX_SPEED_G * speed_scale,
RACER_MIN_BRIGHTNESS_G,
RACER_MAX_BRIGHTNESS_G,
Color{r: 0.0, g: 1.0, b: 0.0, w: 0.0},
start_pos,
dir));
}
for _i in 0 .. NUM_RACERS_B {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_b.push(Racer::new(
RACER_MIN_SPEED_B * speed_scale,
RACER_MAX_SPEED_B * speed_scale,
RACER_MIN_BRIGHTNESS_B,
RACER_MAX_BRIGHTNESS_B,
Color{r: 0.0, g: 0.0, b: 1.0, w: 0.0},
start_pos,
dir));
}
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
for i in 0..4 {
let f = self.filtered_energy.ref_by_index_mut(i).unwrap();
let n = cur_energy.ref_by_index(i).unwrap();
*f = (1.0 - ENERGY_FILTER_ALPHA) * (*f) + ENERGY_FILTER_ALPHA * (*n);
}
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if self.filtered_energy.r > self.max_energy.r {
self.max_energy.r = self.filtered_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if self.filtered_energy.g > self.max_energy.g {
self.max_energy.g = self.filtered_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if self.filtered_energy.b > self.max_energy.b {
self.max_energy.b = self.filtered_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if self.filtered_energy.w > self.max_energy.w {
self.max_energy.w = self.filtered_energy.w;
}
// track the minimum energy with warmup
self.min_energy.r += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.r * 0.5 - self.min_energy.r);
if self.filtered_energy.r < self.min_energy.r {
self.min_energy.r = self.filtered_energy.r;
}
self.min_energy.g += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.g * 0.5 - self.min_energy.g);
if self.filtered_energy.g < self.min_energy.g {
self.min_energy.g = self.filtered_energy.g;
}
self.min_energy.b += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.b * 0.5 - self.min_energy.b);
if self.filtered_energy.b < self.min_energy.b {
self.min_energy.b = self.filtered_energy.b;
}
self.min_energy.w += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.w * 0.5 - self.min_energy.w);
if self.filtered_energy.w < self.min_energy.w {
self.min_energy.w = self.filtered_energy.w;
}
// set all LEDs initially to black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
//self.colorlists[strip][led].scale(FADE_FACTOR);
self.colorlists[strip][led] = Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0};
}
}
// rescaling and normalization of the energies
let brightness = Color{
r: ((self.filtered_energy.r - self.min_energy.r) / (self.max_energy.r - self.min_energy.r)).powf(RGB_EXPONENT),
g: ((self.filtered_energy.g - self.min_energy.g) / (self.max_energy.g - self.min_energy.g)).powf(RGB_EXPONENT),
b: ((self.filtered_energy.b - self.min_energy.b) / (self.max_energy.b - self.min_energy.b)).powf(RGB_EXPONENT),
w: ((self.filtered_energy.w - self.min_energy.w) / (self.max_energy.w - self.min_energy.w)).powf(W_EXPONENT) * W_SCALE,
};
// lowpass-filter brightness to reduce intensive fast flashing
for i in 0..4 {
let f = self.filtered_brightness.ref_by_index_mut(i).unwrap();
let n = brightness.ref_by_index(i).unwrap();
*f = (1.0 - BRIGHTNESS_FILTER_ALPHA) * (*f) + BRIGHTNESS_FILTER_ALPHA * (*n);
}
// update all racers
let f = &self.filtered_brightness;
let speed = &brightness;
self.racers_r.iter_mut().for_each(|x| x.update(speed.r, f.r, f.w));
self.racers_g.iter_mut().for_each(|x| x.update(speed.g, f.g, f.w));
self.racers_b.iter_mut().for_each(|x| x.update(speed.b, f.b, f.w));
// render all racers
for racer in self.racers_r.iter() {
racer.render(&mut self.colorlists);
}
for racer in self.racers_g.iter() {
racer.render(&mut self.colorlists);
}
for racer in self.racers_b.iter() {
racer.render(&mut self.colorlists);
}
// color post-processing
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].limit();
}
}
// debug stuff
self.frame_count += 1;
if self.frame_count % 100 == 0 {
println!("---");
print!("Red "); dbg_bar(self.min_energy.r, self.filtered_brightness.r, self.max_energy.r); println!("{:11.2}", self.max_energy.r);
print!("Green "); dbg_bar(self.min_energy.g, self.filtered_brightness.g, self.max_energy.g); println!("{:11.2}", self.max_energy.g);
print!("Blue "); dbg_bar(self.min_energy.b, self.filtered_brightness.b, self.max_energy.b); println!("{:11.2}", self.max_energy.b);
print!("White "); dbg_bar(self.min_energy.w, self.filtered_brightness.w, self.max_energy.w); println!("{:11.2}", self.max_energy.w);
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}

396
src/animation/racers.rs.orig
View file

@ -1,396 +0,0 @@
// vim: noet
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99980;
const RGB_EXPONENT : f32 = 1.5;
const W_EXPONENT : f32 = 2.2;
const W_SCALE : f32 = 0.3;
const ENERGY_FILTER_ALPHA : f32 = 0.20;
const BRIGHTNESS_FILTER_ALPHA : f32 = 0.10;
<<<<<<< Updated upstream
const NUM_RACERS_R : usize = 20 * config::NUM_LEDS_TOTAL / 300;
const NUM_RACERS_G : usize = 20 * config::NUM_LEDS_TOTAL / 300;
const NUM_RACERS_B : usize = 20 * config::NUM_LEDS_TOTAL / 300;
=======
const NUM_RACERS_R : usize = 20;
const NUM_RACERS_G : usize = 20;
const NUM_RACERS_B : usize = 20;
>>>>>>> Stashed changes
const RACER_MIN_SPEED_R : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_R : f32 = 60.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_R : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_R : f32 = 1.00;
const RACER_MIN_SPEED_G : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_G : f32 = 60.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_G : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_G : f32 = 1.00;
const RACER_MIN_SPEED_B : f32 = 0.5 / config::FPS_ANIMATION;
const RACER_MAX_SPEED_B : f32 = 60.0 / config::FPS_ANIMATION;
const RACER_MIN_BRIGHTNESS_B : f32 = 0.01;
const RACER_MAX_BRIGHTNESS_B : f32 = 1.00;
const SPEED_SCALE_RANGE : f32 = 0.10;
fn dbg_bar(min: f32, current: f32, max: f32)
{
const LEN: usize = 60;
let mut bar = ['.'; LEN];
let minpos = ((LEN as f32) * min / max) as usize;
let curpos = ((LEN as f32) * current / max) as usize;
for idx in minpos..LEN {
bar[idx] = '-';
}
if curpos < LEN {
bar[curpos] = '#';
}
print!("{}", bar.iter().collect::<String>());
}
/*
* A racer is a point of light that can move along the LED strips.
*/
struct Racer
{
min_speed: f32, // LEDs per frame
max_speed: f32, // LEDs per frame
direction: i8, // either +1 or -1
min_brightness: f32,
max_brightness: f32,
color: Color,
pos: f32,
brightness: f32,
flare_brightness: f32,
}
impl Racer
{
pub fn new(min_speed: f32, max_speed: f32, min_brightness: f32, max_brightness: f32, color: Color, start_pos: f32, direction: i8) -> Racer
{
Racer {
min_speed: min_speed,
max_speed: max_speed,
min_brightness: min_brightness,
max_brightness: max_brightness,
direction: direction,
color: color,
pos: start_pos,
brightness: min_brightness,
flare_brightness: 0.0,
}
}
fn _pos2ledstrip(pos: i32) -> (i32, i32)
{
let strip = pos / (config::NUM_LEDS_PER_STRIP as i32);
let mut led = pos % (config::NUM_LEDS_PER_STRIP as i32);
if (strip % 2) == 1 {
led = (config::NUM_LEDS_PER_STRIP as i32) - led - 1;
}
(strip, led)
}
pub fn update(&mut self, brightness: f32, flare_brightness: f32)
{
// move along the strip
let cur_speed = self.min_speed + brightness * (self.max_speed - self.min_speed);
self.pos += (self.direction as f32) * cur_speed;
let maxpos = config::NUM_LEDS_TOTAL as f32;
// if the end is reached, reverse the direction
if self.pos >= maxpos {
self.direction = -1;
self.pos = 2.0 * maxpos - self.pos;
} else if self.pos <= 0.0 {
self.direction = 1;
self.pos = -self.pos;
}
self.brightness = brightness;
self.flare_brightness = flare_brightness;
}
pub fn render(&self, colorlists: &mut [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS])
{
let brightness = self.min_brightness + self.brightness * (self.max_brightness - self.min_brightness);
let fract_led = self.pos - self.pos.floor();
let led1_idx = self.pos.floor() as i32;
let led2_idx = self.pos.ceil() as i32;
let mut color = self.color;
color.w += self.flare_brightness;
let led1_color = color.scaled_copy((1.0 - fract_led) * brightness);
let led2_color = color.scaled_copy(fract_led * brightness);
if led1_idx >= 0 && led1_idx < (config::NUM_LEDS_TOTAL as i32) {
let (strip, led) = Racer::_pos2ledstrip(led1_idx);
colorlists[strip as usize][led as usize].add(&led1_color);
}
if led2_idx >= 0 && led2_idx < (config::NUM_LEDS_TOTAL as i32) {
let (strip, led) = Racer::_pos2ledstrip(led2_idx);
colorlists[strip as usize][led as usize].add(&led2_color);
}
}
}
pub struct Racers
{
max_energy : Color,
min_energy : Color,
filtered_energy : Color,
filtered_brightness : Color,
racers_r : Vec<Racer>,
racers_g : Vec<Racer>,
racers_b : Vec<Racer>,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
frame_count: usize,
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Racers
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Racers
{
Racers {
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
min_energy: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
filtered_energy: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
filtered_brightness: Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0},
racers_r: Vec::with_capacity(NUM_RACERS_R),
racers_g: Vec::with_capacity(NUM_RACERS_G),
racers_b: Vec::with_capacity(NUM_RACERS_B),
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
frame_count: 0,
}
}
fn init(&mut self) -> Result<()>
{
let mut rng = rand::thread_rng();
for _i in 0 .. NUM_RACERS_R {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_r.push(Racer::new(
RACER_MIN_SPEED_R * speed_scale,
RACER_MAX_SPEED_R * speed_scale,
RACER_MIN_BRIGHTNESS_R,
RACER_MAX_BRIGHTNESS_R,
Color{r: 1.0, g: 0.0, b: 0.0, w: 0.0},
start_pos,
dir));
}
for _i in 0 .. NUM_RACERS_G {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_g.push(Racer::new(
RACER_MIN_SPEED_G * speed_scale,
RACER_MAX_SPEED_G * speed_scale,
RACER_MIN_BRIGHTNESS_G,
RACER_MAX_BRIGHTNESS_G,
Color{r: 0.0, g: 1.0, b: 0.0, w: 0.0},
start_pos,
dir));
}
for _i in 0 .. NUM_RACERS_B {
let start_pos = rng.gen::<f32>() * (config::NUM_LEDS_TOTAL as f32);
let speed_scale = 1.0 + SPEED_SCALE_RANGE * (rng.gen::<f32>() - 0.5);
let mut dir = rng.gen::<i8>();
if dir > 0 {
dir = 1;
} else {
dir = -1;
}
self.racers_b.push(Racer::new(
RACER_MIN_SPEED_B * speed_scale,
RACER_MAX_SPEED_B * speed_scale,
RACER_MIN_BRIGHTNESS_B,
RACER_MAX_BRIGHTNESS_B,
Color{r: 0.0, g: 0.0, b: 1.0, w: 0.0},
start_pos,
dir));
}
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
for i in 0..4 {
let f = self.filtered_energy.ref_by_index_mut(i).unwrap();
let n = cur_energy.ref_by_index(i).unwrap();
*f = (1.0 - ENERGY_FILTER_ALPHA) * (*f) + ENERGY_FILTER_ALPHA * (*n);
}
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if self.filtered_energy.r > self.max_energy.r {
self.max_energy.r = self.filtered_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if self.filtered_energy.g > self.max_energy.g {
self.max_energy.g = self.filtered_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if self.filtered_energy.b > self.max_energy.b {
self.max_energy.b = self.filtered_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if self.filtered_energy.w > self.max_energy.w {
self.max_energy.w = self.filtered_energy.w;
}
// track the minimum energy with warmup
self.min_energy.r += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.r * 0.5 - self.min_energy.r);
if self.filtered_energy.r < self.min_energy.r {
self.min_energy.r = self.filtered_energy.r;
}
self.min_energy.g += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.g * 0.5 - self.min_energy.g);
if self.filtered_energy.g < self.min_energy.g {
self.min_energy.g = self.filtered_energy.g;
}
self.min_energy.b += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.b * 0.5 - self.min_energy.b);
if self.filtered_energy.b < self.min_energy.b {
self.min_energy.b = self.filtered_energy.b;
}
self.min_energy.w += (1.0 - COOLDOWN_FACTOR) * (self.max_energy.w * 0.5 - self.min_energy.w);
if self.filtered_energy.w < self.min_energy.w {
self.min_energy.w = self.filtered_energy.w;
}
// set all LEDs initially to black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
//self.colorlists[strip][led].scale(FADE_FACTOR);
self.colorlists[strip][led] = Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0};
}
}
// rescaling and normalization of the energies
let brightness = Color{
r: ((self.filtered_energy.r - self.min_energy.r) / (self.max_energy.r - self.min_energy.r)).powf(RGB_EXPONENT),
g: ((self.filtered_energy.g - self.min_energy.g) / (self.max_energy.g - self.min_energy.g)).powf(RGB_EXPONENT),
b: ((self.filtered_energy.b - self.min_energy.b) / (self.max_energy.b - self.min_energy.b)).powf(RGB_EXPONENT),
w: ((self.filtered_energy.w - self.min_energy.w) / (self.max_energy.w - self.min_energy.w)).powf(W_EXPONENT) * W_SCALE,
};
// lowpass-filter brightness to reduce intensive fast flashing
for i in 0..4 {
let f = self.filtered_brightness.ref_by_index_mut(i).unwrap();
let n = brightness.ref_by_index(i).unwrap();
*f = (1.0 - BRIGHTNESS_FILTER_ALPHA) * (*f) + BRIGHTNESS_FILTER_ALPHA * (*n);
}
// update all racers
let f = &self.filtered_brightness;
self.racers_r.iter_mut().for_each(|x| x.update(f.r, f.w));
self.racers_g.iter_mut().for_each(|x| x.update(f.g, f.w));
self.racers_b.iter_mut().for_each(|x| x.update(f.b, f.w));
// render all racers
for racer in self.racers_r.iter() {
racer.render(&mut self.colorlists);
}
for racer in self.racers_g.iter() {
racer.render(&mut self.colorlists);
}
for racer in self.racers_b.iter() {
racer.render(&mut self.colorlists);
}
// color post-processing
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].limit();
}
}
// debug stuff
self.frame_count += 1;
if self.frame_count % 100 == 0 {
println!("---");
print!("Red "); dbg_bar(self.min_energy.r, self.filtered_brightness.r, self.max_energy.r); println!("{:11.2}", self.max_energy.r);
print!("Green "); dbg_bar(self.min_energy.g, self.filtered_brightness.g, self.max_energy.g); println!("{:11.2}", self.max_energy.g);
print!("Blue "); dbg_bar(self.min_energy.b, self.filtered_brightness.b, self.max_energy.b); println!("{:11.2}", self.max_energy.b);
print!("White "); dbg_bar(self.min_energy.w, self.filtered_brightness.w, self.max_energy.w); println!("{:11.2}", self.max_energy.w);
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}

283
src/animation/sparkles.rs
View file

@ -1,283 +0,0 @@
// vim: noet
use crate::animation::{Color, Animation, Result};
use crate::signal_processing::SignalProcessing;
use crate::config;
use std::rc::Rc;
use std::cell::RefCell;
use std::collections::VecDeque;
use rand::Rng;
const COOLDOWN_FACTOR : f32 = 0.99995;
const RGB_EXPONENT : f32 = 1.5;
const W_EXPONENT : f32 = 2.2;
const FADE_FACTOR : f32 = 0.97;
const AVG_LEDS_ACTIVATED : f32 = 0.03;
const WHITE_EXTRA_SCALE : f32 = 0.3;
const CONDENSATION_FACTOR : f32 = 5.0;
const SPARK_FADE_STEP : f32 = 2.500 / config::FPS_ANIMATION;
const SPARK_VSPEED_MIDS : f32 = 1.000 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
const SPARK_VSPEED_HIGHS : f32 = 0.800 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
const SPARK_VSPEED_XHIGHS : f32 = 0.500 * config::NUM_LEDS_PER_STRIP as f32 / config::FPS_ANIMATION;
/*
* A spark is a point of light that can move vertically along the LED strips.
*/
struct Spark
{
pub vspeed: f32, // LEDs per frame
pub brightness: f32,
pub color: Color,
strip: u16,
led: f32,
has_expired: bool,
}
impl Spark
{
pub fn new(vspeed: f32, brightness: f32, color: Color, strip: u16, led: f32) -> Spark
{
Spark {
vspeed: vspeed,
brightness: brightness,
color: color,
strip: strip,
led: led,
has_expired: false
}
}
pub fn update(&mut self)
{
if self.has_expired {
return;
}
self.led += self.vspeed;
self.brightness -= SPARK_FADE_STEP;
if (self.led >= config::NUM_LEDS_PER_STRIP as f32) || (self.led <= -1.0) {
// moved outside of the LED array -> no need to update this any more
self.has_expired = true;
}
if self.brightness <= 0.0 {
// moved outside of the LED array -> no need to update this any more
self.has_expired = true;
}
}
pub fn has_expired(&self) -> bool
{
self.has_expired
}
pub fn render(&self, colorlists: &mut [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS])
{
if self.has_expired {
// do not render if this Spark has expired
return;
}
let fract_led = self.led - self.led.floor();
let led1_idx = self.led.floor() as i32;
let led2_idx = self.led.ceil() as usize;
let led1_color = self.color.scaled_copy(fract_led * self.brightness);
let led2_color = self.color.scaled_copy((1.0 - fract_led) * self.brightness);
if led1_idx >= 0 {
colorlists[self.strip as usize][led1_idx as usize].add(&led1_color);
}
if led2_idx < config::NUM_LEDS_PER_STRIP {
colorlists[self.strip as usize][led2_idx as usize].add(&led2_color);
}
}
}
pub struct Sparkles
{
max_energy : Color,
sparks : VecDeque<Spark>,
colorlists : [ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: Rc<RefCell<SignalProcessing>>,
}
impl Animation for Sparkles
{
fn new(sigproc: Rc<RefCell<SignalProcessing>>) -> Sparkles
{
Sparkles {
max_energy: Color{r: 1.0, g: 1.0, b: 1.0, w: 1.0},
sparks: VecDeque::with_capacity(1024),
colorlists: [ [Color{r: 0.0, g: 0.0, b: 0.0, w: 0.0}; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS],
sigproc: sigproc,
}
}
fn init(&mut self) -> Result<()>
{
Ok(())
}
fn periodic(&mut self) -> Result<()>
{
let sigproc = self.sigproc.borrow();
// extract frequency band energies
let cur_energy = Color{
r: sigproc.get_energy_in_band( 0.0, 400.0),
g: sigproc.get_energy_in_band( 400.0, 4000.0),
b: sigproc.get_energy_in_band( 4000.0, 12000.0),
w: sigproc.get_energy_in_band(12000.0, 22000.0)};
// track the maximum energy with cooldown
self.max_energy.r *= COOLDOWN_FACTOR;
if cur_energy.r > self.max_energy.r {
self.max_energy.r = cur_energy.r;
}
self.max_energy.g *= COOLDOWN_FACTOR;
if cur_energy.g > self.max_energy.g {
self.max_energy.g = cur_energy.g;
}
self.max_energy.b *= COOLDOWN_FACTOR;
if cur_energy.b > self.max_energy.b {
self.max_energy.b = cur_energy.b;
}
self.max_energy.w *= COOLDOWN_FACTOR;
if cur_energy.w > self.max_energy.w {
self.max_energy.w = cur_energy.w;
}
// fade all LEDs towards black
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].scale(FADE_FACTOR);
}
}
// distribute the energy for each color
let new_energy = Color{
r: (cur_energy.r / self.max_energy.r).powf(RGB_EXPONENT),
g: (cur_energy.g / self.max_energy.g).powf(RGB_EXPONENT),
b: (cur_energy.b / self.max_energy.b).powf(RGB_EXPONENT),
w: (cur_energy.w / self.max_energy.w).powf(W_EXPONENT),
};
let mut remaining_energy = new_energy.r;
remaining_energy *= AVG_LEDS_ACTIVATED * config::NUM_LEDS_TOTAL as f32;
let mut rng = rand::thread_rng();
// Red (bass) uses exactly the same algorithm as for the “Particles” animation.
while remaining_energy > 0.0 {
let mut rnd_energy = rng.gen::<f32>() * new_energy.r * CONDENSATION_FACTOR;
let rnd_strip = rng.gen_range(0..config::NUM_STRIPS);
let rnd_led = rng.gen_range(0..config::NUM_LEDS_PER_STRIP);
if rnd_energy > remaining_energy {
rnd_energy = remaining_energy;
remaining_energy = 0.0;
} else {
remaining_energy -= rnd_energy;
}
self.colorlists[rnd_strip][rnd_led].r += rnd_energy;
}
// update all existing sparks
self.sparks.iter_mut().for_each(|x| x.update());
// Create green sparks for middle frequencies.
// They originate in the center and can go both up and down from there.
self.sparks.push_back(Spark::new(
match rng.gen::<bool>() {
true => SPARK_VSPEED_MIDS,
false => -SPARK_VSPEED_MIDS,
},
new_energy.g,
Color{r: 0.0, g: 1.0, b: 0.0, w: 0.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
(config::NUM_LEDS_PER_STRIP as f32 / 2.0) - 0.5));
// Create blue sparks for high frequencies.
// They originate either in the top, moving down, or in the bottom, moving up
{
let start_from_top = rng.gen::<bool>();
let start_led = match start_from_top {
true => config::NUM_LEDS_PER_STRIP-1,
false => 0} as f32;
let vspeed = match start_from_top {
true => -SPARK_VSPEED_HIGHS,
false => SPARK_VSPEED_HIGHS};
self.sparks.push_back(Spark::new(
vspeed,
new_energy.b,
Color{r: 0.0, g: 0.0, b: 1.0, w: 0.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
start_led));
}
// Create white sparks for very high frequencies.
// They originate either in the top, moving down, or in the bottom, moving up
{
let start_from_top = rng.gen::<bool>();
let start_led = match start_from_top {
true => config::NUM_LEDS_PER_STRIP-1,
false => 0} as f32;
let vspeed = match start_from_top {
true => -SPARK_VSPEED_XHIGHS,
false => SPARK_VSPEED_XHIGHS};
self.sparks.push_back(Spark::new(
vspeed,
new_energy.w * WHITE_EXTRA_SCALE,
Color{r: 0.0, g: 0.0, b: 0.0, w: 1.0},
rng.gen_range(0..config::NUM_STRIPS) as u16,
start_led));
}
// remove expired sparks in the beginning of the deque
while self.sparks.front().map_or(false, |s| s.has_expired()) {
self.sparks.pop_front();
}
// render all remaining sparks
for spark in self.sparks.iter() {
spark.render(&mut self.colorlists);
}
// color post-processing
for strip in 0..config::NUM_STRIPS {
for led in 0..config::NUM_LEDS_PER_STRIP {
self.colorlists[strip][led].limit();
}
}
Ok(())
}
fn get_colorlist(&self) -> &[ [Color; config::NUM_LEDS_PER_STRIP]; config::NUM_STRIPS]
{
return &self.colorlists;
}
}

3
src/config.rs
View file

@ -16,6 +16,3 @@ pub const UDP_SERVER_ADDR: &str = "192.168.23.118:2703";
pub const FPS_ANIMATION: f32 = SAMP_RATE / SAMPLES_PER_UPDATE as f32;
pub const FPS_LEDS: f32 = 60.0;
// “standby mode” configuration
pub const STANDBY_MAX_SILENT_SAMPLES: usize = SAMP_RATE as usize;

20
src/main.rs
View file

@ -44,9 +44,7 @@ fn main()
// TODO: let the user select via the command line
//let mut anim: animation::particles::Particles = animation::Animation::new(sigproc.clone());
//let mut anim: animation::sparkles::Sparkles = animation::Animation::new(sigproc.clone());
//let mut anim: animation::racers::Racers = animation::Animation::new(sigproc.clone());
let mut anim: animation::fire::Fire = animation::Animation::new(sigproc.clone());
let mut anim: animation::sparkles::Sparkles = animation::Animation::new(sigproc.clone());
println!("Calling Animation::init()...");
@ -67,9 +65,6 @@ fn main()
// array for samples directly read from stream
let mut samples: VecDeque<i16> = VecDeque::with_capacity(config::BLOCK_LEN);
// counts silent (zero-valued) samples
let mut silent_samples: usize = 0;
// main loop
loop {
@ -103,19 +98,6 @@ fn main()
{
let mut s = sigproc.borrow_mut();
s.import_i16_mono_from_iter(samples.iter()).unwrap();
if s.is_silent() {
silent_samples += config::BLOCK_LEN;
if silent_samples >= config::STANDBY_MAX_SILENT_SAMPLES {
// too many silent samples in a row: stop any signal processing until something
// else occurs at the input again
continue;
}
} else {
silent_samples = 0;
}
s.update_fft().unwrap();
}

5
src/signal_processing.rs
View file

@ -104,11 +104,6 @@ impl SignalProcessing
Ok(())
}
pub fn is_silent(&self) -> bool
{
return self.fft_input.iter().sum::<f32>() == 0.0;
}
pub fn update_fft(&mut self) -> fftw::error::Result<()>
{
self.fft_plan.r2c(&mut self.fft_input, &mut self.fft_output)?;