fix: less warnings, better logging for helios broadcast

copyme.settings.toml

@@ -35,7 +35,3 @@ Until = 48
 [[transformers]]
 [transformers.intensity]
 
-
-[[transformers]]
-[transformers.angle_correction]
-coef = 2000.0

examples/etherdream.rs

@@ -0,0 +1,151 @@
+extern crate ether_dream;
+
+use ether_dream::dac;
+
+fn main() {
+	println!("Listening for an Ether Dream DAC...");
+
+	let (dac_broadcast, source_addr) = ether_dream::recv_dac_broadcasts()
+		.expect("failed to bind to UDP socket")
+		.filter_map(Result::ok)
+		.next()
+		.unwrap();
+	let mac_address = dac::MacAddress(dac_broadcast.mac_address);
+
+	println!(
+		"Discovered DAC \"{}\" at \"{}\"! Connecting...",
+		mac_address, source_addr
+	);
+
+	// Establish the TCP connection.
+	let mut stream = dac::stream::connect(&dac_broadcast, source_addr.ip().clone()).unwrap();
+
+	// If we want to create an animation (in our case a moving sine wave) we need a frame rate.
+	let frames_per_second = 60.0;
+	// Lets use the DAC at an eighth the maximum scan rate.
+	let points_per_second = stream.dac().max_point_rate / 32;
+	// Determine the number of points per frame given our target frame and point rates.
+	let points_per_frame = (points_per_second as f32 / frames_per_second) as u16;
+
+	println!(
+		"Preparing for playback:\n\tframe_hz: {}\n\tpoint_hz: {}\n\tpoints_per_frame: {}\n",
+		frames_per_second, points_per_second, points_per_frame
+	);
+
+	// Prepare the DAC's playback engine and await the repsonse.
+	stream
+		.queue_commands()
+		.prepare_stream()
+		.submit()
+		.err()
+		.map(|err| {
+			eprintln!(
+				"err occurred when submitting PREPARE_STREAM \
+                      command and listening for response: {}",
+				err
+			);
+		});
+
+	println!("Beginning playback!");
+
+	// The sine wave used to generate points.
+	let mut sine_wave = SineWave {
+		point: 0,
+		points_per_frame,
+		frames_per_second,
+	};
+
+	// Queue the initial frame and tell the DAC to begin producing output.
+	let n_points = points_to_generate(stream.dac());
+	stream
+		.queue_commands()
+		.data(sine_wave.by_ref().take(n_points))
+		.begin(0, points_per_second)
+		.submit()
+		.err()
+		.map(|err| {
+			eprintln!(
+				"err occurred when submitting initial DATA and BEGIN \
+                      commands and listening for response: {}",
+				err
+			);
+		});
+	eprintln!("Stream dac{:?}", stream.dac());
+
+	// Loop and continue to send points forever.
+	loop {
+		// Determine how many points the DAC can currently receive.
+		let n_points = points_to_generate(stream.dac());
+		if let Err(err) = stream
+			.queue_commands()
+			.data(sine_wave.by_ref().take(n_points))
+			.submit()
+		{
+			eprintln!(
+				"err occurred when submitting DATA command and listening \
+                      for response: {}",
+				err
+			);
+			break;
+		}
+	}
+
+	// Tell the DAC to stop producing output and return to idle. Wait for the response.
+	//
+	// Note that the DAC is commanded to stop on `Drop` if this is not called and any errors
+	// produced are ignored.
+	stream
+		.queue_commands()
+		.stop()
+		.submit()
+		.expect("err occurred when submitting STOP command and listening for response");
+}
+
+// Determine the number of points needed to fill the DAC.
+fn points_to_generate(dac: &ether_dream::dac::Dac) -> usize {
+	dac.buffer_capacity as usize - 1 - dac.status.buffer_fullness as usize
+}
+
+// An iterator that endlessly generates a sine wave of DAC points.
+//
+// The sine wave oscillates at a rate of once per second.
+struct SineWave {
+	point: u32,
+	points_per_frame: u16,
+	frames_per_second: f32,
+}
+
+impl Iterator for SineWave {
+	type Item = ether_dream::protocol::DacPoint;
+	fn next(&mut self) -> Option<Self::Item> {
+		let coloured_points_per_frame = self.points_per_frame - 1;
+		let i = (self.point % self.points_per_frame as u32) as u16;
+		let hz = 1.0;
+		let fract = i as f32 / coloured_points_per_frame as f32;
+		let phase = (self.point as f32 / coloured_points_per_frame as f32) / self.frames_per_second;
+		let amp = (hz * (fract + phase) * 2.0 * std::f32::consts::PI).sin();
+		let (r, g, b) = match i {
+			i if i == coloured_points_per_frame || i < 13 => (0, 0, 0),
+			_ => (std::u16::MAX, std::u16::MAX, std::u16::MAX),
+		};
+		let x_min = std::i16::MIN;
+		let x_max = std::i8::MAX as i16;
+		let x = (x_min as f32 + fract * (x_max as f32 - x_min as f32)) as i16;
+		let y = (amp * x_max as f32) as i16;
+		let control = 0;
+		let (u1, u2) = (0, 0);
+		let p = ether_dream::protocol::DacPoint {
+			control,
+			x,
+			y,
+			i,
+			r,
+			g,
+			b,
+			u1,
+			u2,
+		};
+		self.point += 1;
+		Some(p)
+	}
+}

examples/populate_redis.rs

@@ -1,6 +1,13 @@
-///
+use std::io::_print;
-/// $ cargo run --example populate_redis
+/**
-///
+
+# Populate Redis Example
+
+**This script simulates the redis content provided by the LJ Python / web tool**
+
+$ cargo run --example populate_redis
+ **/
+
 use redis::{
 	//RedisResult,
 	Client,
@@ -11,16 +18,17 @@ use redis::{
 fn do_something() -> redis::RedisResult<()> {
 	let client = Client::open("redis://127.0.0.1/")?;
 	let mut con: Connection = client.get_connection()?;
-
 	let _ = con.set("/clientkey", "/pl/0/")?;
-    let _ = con.set(
+	let _ = con.set("/EDH/0", "[[1.0, 0.0, 0.0],\n [ 0.0, 1.0, 0.0],\n [ 0.0, 0.0, 1.0]]")?;
-        "/EDH/0",
-        "[[1.0, 0.0, 0.0],\n [ 0.0, 1.0, 0.0],\n [ 0.0, 0.0, 1.0]]",
-    )?;
 	let _ = con.set("/kpps/0", "5000")?;
 	let _ = con.set("/intensity/0", "255")?;
+	let _ = con.set("/pl/0/0", "[(1000, 2000, 0), (1000, 1000, 65535), (2000, 1000, 65535), (2000, 2000, 65535), (1000, 2000, 65535)]")?;
 	Ok(())
 }
+
 fn main() {
-    _ = do_something();
+	match do_something() {
+		Err(err)    => println!("Something wrong occured: {:?}", err),
+		Ok(..)                  => println!("Successfully inserted content in Redis")
+	}
 }

examples/simple_client.rs

@@ -1,6 +1,7 @@
 ///
 /// $ cargo run --example simple_client
 ///
+
 use redis::{
     //RedisResult,
     Client,
@@ -27,7 +28,11 @@ fn do_something() -> redis::RedisResult<()> {
 
 	    let x = a.cos() * r;
 	    let y = a.sin() * r;
-            let col = if i % 8 < 4 { 0x000000ff } else { 0x00ff0000 };
+	    let col = if i % 8 < 4 {
+		0x000000ff
+	    } else {
+		0x00ff0000
+	    };
 	    v.push((x,y,col));
 	}
 	// println!("{:?}", v);

examples/test.rs

@@ -0,0 +1,46 @@
+///
+/// $ cargo run --example simple_client
+///
+
+use redis::{
+	//RedisResult,
+	Client,
+	Commands,
+	Connection,
+};
+
+use std::time::Instant;
+
+fn do_something() -> redis::RedisResult<()> {
+	let client = Client::open("redis://127.0.0.1/")?;
+	let mut con: Connection = client.get_connection()?;
+	let start = Instant::now();
+
+	loop {
+		let elapsed = start.elapsed();
+		let time = 60.0 * elapsed.as_millis() as f32 / 1000.0;
+
+		let mut v: Vec<(f32, f32, u32)> = vec![];
+
+		for i in 0..128 {
+			let a = (time + i as f32) / 128.0 * std::f32::consts::PI * 2.0;
+			let r = 1200.0 + (a * 5.0).cos() * (500.0 * (time / 5.0).cos());
+
+			let x = a.cos() * r;
+			let y = a.sin() * r;
+			let col = if i % 8 < 4 {
+				0x000000ff
+			} else {
+				0x00ff0000
+			};
+			v.push((x, y, col));
+		}
+		// println!("{:?}", v);
+		let _ = con.set("/pl/0/0", format!("{:?}", v))?;
+	}
+	// Ok(())
+}
+
+fn main() {
+	_ = do_something();
+}

src/conf.rs

@@ -1,7 +1,7 @@
+use config::Config;
+use serde::{Serialize, Deserialize};
 use crate::errors::{LJError, LJResult};
 use crate::transformer;
-use config::Config;
-use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Conf {
@@ -49,39 +49,36 @@ pub enum TransformConf {
 	Grid(transformer::Grid),
 	#[serde(rename = "homography")]
 	Homography(transformer::Homography),
-    #[serde(rename = "angle_correction")]
+	#[serde(rename = "helios_to_etherdream")]
-    AngleOptimisation(transformer::AngleOptimisation),
+	HeliosToEtherdream(transformer::HeliosToEtherdream),
+	#[serde(rename = "intensity")]
+	Intensity(transformer::Intensity),
 }
 
+
 impl Conf {
 	pub fn new(path: &str) -> LJResult<Conf> {
 		let settings = Config::builder()
 			.add_source(config::File::with_name(path))
 			.build()?;
 
-        dbg!("path:", path);
-        //println!("plop");
-        dbg!(settings.clone());
 		let conf: Conf = settings.try_deserialize().map_err(LJError::Config)?;
-
-        //println!("plum");
 		Ok(conf)
 	}
 
-    //println!("plop");
-
 	pub fn get_transformers(&self) -> Vec<Box<dyn transformer::Transformers>> {
 		let mut v = vec![];
 		for t in &self.transformers {
 			let t: Box<dyn transformer::Transformers> = match t {
-                TransformConf::Translate(t) => Box::new(*t),
-                TransformConf::Replicate(r) => Box::new(*r),
-                TransformConf::Rotate(r) => Box::new(*r),
 				TransformConf::FlipH(r) => Box::new(*r),
 				TransformConf::FlipV(r) => Box::new(*r),
 				TransformConf::Grid(r) => Box::new(*r),
+				TransformConf::HeliosToEtherdream(r) => Box::new(*r),
 				TransformConf::Homography(r) => Box::new(*r),
-                TransformConf::AngleOptimisation(r) => Box::new(*r),
+				TransformConf::Intensity(r) => Box::new(*r),
+				TransformConf::Replicate(r) => Box::new(*r),
+				TransformConf::Rotate(r) => Box::new(*r),
+				TransformConf::Translate(t) => Box::new(*t),
 			};
 			v.push(t);
 		}

src/device.rs

@@ -1,15 +1,15 @@
+mod helios;
 mod dummy;
 mod etherdream;
-mod helios;
 
+use std::fmt;
 use crate::conf::{Conf, DacFamily /*EtherDreamConf, HeliosConf*/};
-use crate::device::dummy::DummyDevice;
-use crate::device::etherdream::EtherdreamDevice;
 use crate::device::helios::HeliosDevice;
+use crate::device::dummy::DummyDevice;
 use crate::errors::LJResult;
 use crate::point::Point;
 use serde::Serialize;
-use std::fmt;
+use crate::device::etherdream::EtherdreamDevice;
 
 /*
 self.protocol_version,
@@ -28,8 +28,7 @@ self.point_count
 pub enum PlaybackState {
 	IDLE = 0,
 	PREPARE = 1,
-    PLAYING = 2,
+	PLAYING = 2
-    UNKNOWN = 99,
 }
 
 impl fmt::Display for PlaybackState {
@@ -43,7 +42,7 @@ pub struct Status {
 	pub last_traced_at: String,
 	pub properties: Vec<String>,
 	pub playback_state: PlaybackState,
-    pub capacity: u16,
+	pub capacity: usize,
 	pub lack: String,
 }
 
@@ -53,7 +52,11 @@ pub struct Status {
 
 pub trait Device {
 	fn status(&mut self) -> Status;
-    fn draw(&mut self, frame: Vec<Point>, speed: u32) -> LJResult<()>;
+	fn draw(
+		&mut self,
+		frame: Vec<Point>,
+		speed: u32,
+	) -> LJResult<()>;
 	fn stop(&mut self) -> LJResult<()>;
 	fn grid(&mut self) -> Vec<Point>;
 }
@@ -62,7 +65,7 @@ pub fn device_factory(config: &Conf) -> LJResult<Box<dyn Device>> {
 	let device: Box<dyn Device> = match &config.dac {
 		DacFamily::Helios(conf) => Box::new(HeliosDevice::new(conf)?),
 		DacFamily::Etherdream( conf) => Box::new( EtherdreamDevice::new(conf)?),
-        DacFamily::Dummy => Box::new(DummyDevice::new()?),
+		DacFamily::Dummy => Box::new(DummyDevice::new()?)
 	};
 	Ok(device)
 }

src/device/dummy.rs

@@ -1,17 +1,15 @@
-use crate::device::{Device, PlaybackState, Status};
+use crate::device::{Device, Status, PlaybackState};
 use crate::errors::LJResult;
 use crate::point::{Color, Point};
 use log::debug;
 
 pub struct DummyDevice {
-    state: PlaybackState,
+    state: PlaybackState
 }
 
 impl DummyDevice {
 	pub fn new() -> LJResult<Self> {
-        Ok(Self {
+	    Ok(Self { state: PlaybackState::IDLE })
-            state: PlaybackState::IDLE,
-        })
 	}
 }
 
@@ -22,11 +20,14 @@ impl Device for DummyDevice {
 			properties: vec!["foo".to_string()],
 			playback_state: self.state,
 			capacity: 0,
-            lack: "lack".to_string(),
+			lack: "lack".to_string()
 		}
 	}
 
-    fn draw(&mut self, line: Vec<Point>, speed: u32) -> LJResult<()> {
+	fn draw(&mut self,
+	        line: Vec<Point>,
+	        speed: u32,
+	) -> LJResult<()> {
 	    debug!("Draw Line at speed {speed} : {:?}", line);
 	    Ok(())
 	}
@@ -35,10 +36,8 @@ impl Device for DummyDevice {
 		Ok(())
 	}
 	fn grid(&mut self) -> Vec<Point> {
-        vec![Point {
+		vec!(
-            x: 0 as f32,
+			Point{ x: 0 as f32, y: 0 as f32, color:Color{ r: 0, g: 0, b: 0 }}
-            y: 0 as f32,
+		)
-            color: Color { r: 0, g: 0, b: 0 },
-        }]
 	}
 }

src/device/etherdream.rs

@@ -1,155 +1,308 @@
-use ether_dream::dac::stream::connect;
+#[warn(unused_imports)]
-use ether_dream::dac::Stream;
+use log::{ debug, info, warn};
+
 use std::net::SocketAddr;
+use std::thread::sleep;
+use ether_dream::dac::stream::{CommunicationError, connect};
+use ether_dream::dac::{Playback, Stream};
+use chrono::{DateTime, Utc};
 use std::time;
+use std::time::{Duration, SystemTime};
 
 use crate::conf::EtherDreamConf;
-use crate::device::{Device, PlaybackState, Status};
+use crate::device::{Device, Status, PlaybackState};
 use crate::errors::{LJError, LJResult};
 use crate::point::{Color, Point};
-use ether_dream::protocol::{DacBroadcast, DacStatus};
+use ether_dream::protocol::{DacBroadcast, DacResponse};
-use log::{info, warn};
+
 
 #[warn(dead_code)]
 pub struct EtherdreamDevice {
 	pub conf: EtherDreamConf,
 	dac: DacBroadcast,
-    // source_address: SocketAddr,
 	stream: Stream,
-    // sent_points: u16,
+
-    lack: String,
+	// "a": ACK   "F": Full  "I": invalid. 64 or 35 for no connection.
-    last_traced_at: String,
+	//     /// The previous command was accepted.
+	//     pub const ACK: u8 = 0x61;
+	//     /// The write command could not be performed because there was not enough buffer space when it
+	//     /// was received.
+	//     pub const NAK_FULL: u8 = 0x46;
+	//     /// The command contained an invalid `command` byte or parameters.
+	//     pub const NAK_INVALID: u8 = 0x49;
+	//     /// An emergency-stop condition still exists.
+	//     pub const NAK_STOP_CONDITION: u8 = 0x21;
+	// }
+	dac_response: u8,
 }
 
 impl EtherdreamDevice {
 	pub fn new(conf: &EtherDreamConf) -> LJResult<Self> {
-        let (dac, _source_address, stream) = EtherdreamDevice::get_dac(conf)?;
+		let (dac, _source_address, stream) = EtherdreamDevice::connect(conf)?;
-        // let (dac, source_address) = EtherdreamDevice::get_dac(conf)?;
 		Ok(Self {
 			conf: (*conf).clone(),
 			dac,
-            // source_address,
 			stream,
-            // sent_points: 0,
+			dac_response: DacResponse::ACK,
-            lack: "".to_string(),
-            last_traced_at: "1985-04-12T23:20:50.52Z".to_string(),
 		})
 	}
-    pub fn get_dac(conf: &EtherDreamConf) -> LJResult<(DacBroadcast, SocketAddr, Stream)> {
+	fn connect(conf: &EtherDreamConf) -> LJResult<(DacBroadcast, SocketAddr, Stream)> {
 		let ip = &conf.ip;
 		let dac_broadcast = ether_dream::recv_dac_broadcasts()?;
 		dac_broadcast.set_timeout(Some(time::Duration::new(10, 0)))?;
 		info!("Attempting to get DAC broadcast...");
 		let broadcast = dac_broadcast
-            .filter_map(|result| match result {
+			.take(3)
+			.filter_map(|result| {
+				match result {
 					Err(err) => {
 						warn!( "Failed to find a valid DAC via broadcast. Error: {:?}", err);
 						info!( "Retrying...");
 						None
 					}
 					Ok((dac, source_addr)) => {
+						info!("Valid broadcast, source_addr: {}", source_addr);
 						if source_addr.is_ipv6() {
+							warn!("Broadcast ignored: ipv6 address.");
 							return None;
 					        }
-                    if &source_addr.ip().to_string() != ip {
+						let src_ip = source_addr.ip().to_string();
+						if &src_ip != ip {
+							warn!("Broadcast ignored: expected {ip}, got: {src_ip} ");
 							return None;
 						}
-                    info!("Valid broadcast");
 						Some(Ok((dac, source_addr)))
 					}
+				}
 			})
 			.next()
 			.expect("Failed to receive broadcast.");
 		match broadcast {
-            Err(err) => Err(Box::new(LJError::EtherdreamConnectError(err))),
+			Err(err) => {
+				Err(Box::new(LJError::EtherdreamConnectError(err)))
+			}
 			Ok((dac, source_addr)) => {
+				info!("Trying to open TCP stream...");
 				let stream = EtherdreamDevice::get_tcp_stream(&dac, &source_addr)?;
+				info!("Finished configuring DAC and TCP stream.");
 				Ok((dac, source_addr, stream))
 			}
 		}
 	}
 
-    pub fn get_tcp_stream(dac: &DacBroadcast, source_address: &SocketAddr) -> LJResult<Stream> {
+	fn get_tcp_stream(dac: &DacBroadcast, source_address: &SocketAddr) -> LJResult<Stream> {
-        // Establish the TCP connection.
 		let mut stream = connect(dac, source_address.ip())?;
-
+		match stream
-        // Prepare  stream
-        stream
 			.queue_commands()
 			.prepare_stream()
-            .submit()
+			.submit() {
-            .err()
+			Err(err) => warn!("err occurred when submitting PREPARE_STREAM command and listening for response: {}",err),
-            .map(|err| {
+			Ok(_) => info!("Prepared Stream.")
-                eprintln!(
+		}
-                    "err occurred when submitting PREPARE_STREAM \
+		// If we want to create an animation (in our case a moving sine wave) we need a frame rate.
-		                  command and listening for response: {}",
+		let frames_per_second = 60.0;
-                    err
+		// Lets use the DAC at an eighth the maximum scan rate.
-                );
+		let points_per_second = stream.dac().max_point_rate / 32;
-            });
+		// Determine the number of points per frame given our target frame and point rates.
+		let points_per_frame = (points_per_second as f32 / frames_per_second) as u16;
+
+		let mut sine_wave = SineWave {
+			point: 0,
+			points_per_frame,
+			frames_per_second,
+		};
+
+		match stream
+			.queue_commands()
+			.data(sine_wave.by_ref().take(400))
+			// .data(begin_list.into_iter().take(400 as usize))
+			.begin(0, points_per_second)
+			.submit() {
+			Err(err) => warn!("err occurred when submitting first data: {}",err),
+			Ok(_) => info!("Sent first data to Etherdream.")
+		}
 
 		Ok(stream)
 	}
 
-    pub fn check_tcp_stream(&mut self) -> LJResult<()> {
+	fn points_capacity(&self) -> usize {
-        // todo Reinit stream if needed
+		/***
-        // self.stream = EtherdreamDevice::get_tcp_stream(&self.dac, &self.source_address)?
+		Determine the number of points needed to fill the DAC.
-        Ok(())
+		 ***/
+		// Fixme thread 'main' panicked at 'attempt to subtract with overflow', src/device/etherdream.rs:144:24
+		let n_points = self.dac.buffer_capacity as usize - self.stream.dac().dac.status.buffer_fullness as usize - 1;
+		n_points
 	}
 
-    // Determine the number of points needed to fill the DAC.
+	fn ping(&mut self) -> LJResult<()> {
-    fn points_to_generate(&self) -> usize {
+
-        self.dac.buffer_capacity as usize - 1 - self.dac.dac_status.buffer_fullness as usize
+		Ok(self.stream.queue_commands().ping().submit()?)
+
 	}
 }
 
 impl Device for EtherdreamDevice {
 	fn status(&mut self) -> Status {
-        let _ = self.check_tcp_stream();
+		let playback_state = match self.stream.dac().dac.status.playback {
-
+			Playback::Idle => PlaybackState::IDLE,
-        // "a": ACK   "F": Full  "I": invalid. 64 or 35 for no connection.
+			Playback::Prepared => PlaybackState::PREPARE,
-        let playback_state = match self.dac.dac_status.playback_state {
+			Playback::Playing => PlaybackState::PLAYING,
-            DacStatus::PLAYBACK_IDLE => PlaybackState::IDLE,
-            DacStatus::PLAYBACK_PREPARED => PlaybackState::PREPARE,
-            DacStatus::PLAYBACK_PLAYING => PlaybackState::PLAYING,
-            _ => PlaybackState::UNKNOWN,
 		};
+		let now = SystemTime::now();
+		let now: DateTime<Utc> = now.into();
+		let now = now.to_rfc3339();
 
 		Status {
-            last_traced_at: self.last_traced_at.clone(),
+			last_traced_at: now,
 			properties: vec!["foo".to_string()],
 			playback_state,
-            capacity: self.dac.dac_status.buffer_fullness,
+			capacity: self.points_capacity(),
-            lack: String::from(&self.lack),
+			lack: self.dac_response.to_string(),
 		}
+		// debug!("Dac Status: {:?} ", status );
+		// debug!("Etherdream Dac {:?} ", self.dac );
+		// debug!("Stream dac{:?}", self.stream.dac());
+		// status
 	}
 
-    fn draw(&mut self, line: Vec<Point>, _speed: u32) -> LJResult<()> {
+	fn draw(&mut self,
-        let n_points = self.points_to_generate();
+	        line: Vec<Point>,
-        self.stream
+	        _speed: u32,
+	) -> LJResult<()> {
+		let chunk_size = 64;
+		let points_iter = line.into_iter();
+		for chunk in  points_iter.as_slice().chunks(chunk_size){
+			debug!("New chunk length: {:?}", chunk.len());
+			loop {
+				let capacity = self.points_capacity();
+				if chunk.len() > capacity {
+					debug!("Sleep, capacity : {:?}", capacity);
+					// Sleep for 1/100th of a sec
+					sleep(Duration::new( 0,     10000000));
+					self.ping()?;
+				} else {
+					break;
+				}
+			}
+			debug!("drawing");
+			match self.stream
 				.queue_commands()
-            .data(line.into_iter().map(|point| point.into()).take(n_points))
+				.data(
-            .submit()?;
+					chunk.iter()
+						.map(|point| (*point).into())
+						.take(chunk_size)
+				)
+				.submit() {
+				Err(err) => {
+					// We should account for
+					// 'Broken pipe (os error 32)'
+					// Connection reset by peer (os error 104)
+					self.dac_response = match err {
+						CommunicationError::Io(err) => {
+							warn!("IO ERROR while drawing: '{}'",err);
+							DacResponse::ACK
+						}
+						CommunicationError::Protocol(err) => {
+							warn!("Protocol ERROR while drawing: '{}'",err);
+							DacResponse::ACK
+						}
+						CommunicationError::Response(err) => {
+							warn!("Response ERROR while drawing: '{}'",err);
+							err.response.response
+						}
+					};
+				}
+				Ok(_) => {
+					self.dac_response = DacResponse::ACK;
+					// debug!("Draw is ok");
+				}
+			};
+		}
 		Ok(())
 	}
 
 	fn stop(&mut self) -> LJResult<()> {
-        self.stream
+		info!("Stopping Etherdream device...");
+		match self.stream
 			.queue_commands()
 			.stop()
 			.submit()
-            .expect("err occurred when submitting STOP command and listening for response");
+		{
+			Err(err) => {
+				warn!("Failed to stop EtherDream device with error {:?}", err);
+				Err(Box::new(err))
+			}
+			Ok(_) => {
+				info!("Sucessfully closed EtherDream device.");
 				Ok(())
 			}
+		}
+	}
 
 	fn grid(&mut self) -> Vec<Point> {
-        vec![Point {
+		let dim_mid = 16000.0;
-            x: 0.0,
+		let dim_max = 32000.0;
-            y: 0.0,
+		let col_min = Color { r: 0, g: 0, b: 0 };
-            color: Color {
+		let col_max = Color { r: 255, g: 255, b: 255 };
-                r: 255,
+
-                g: 255,
+		vec![
-                b: 255,
+			Point { x: -dim_max, y: dim_max, color: col_min },
-            },
+			Point { x: -dim_max, y: dim_max, color: col_max },
-        }]
+			Point { x: dim_max, y: dim_max, color: col_max },
+			Point { x: dim_max, y: -dim_max, color: col_max },
+			Point { x: -dim_max, y: -dim_max, color: col_max },
+			Point { x: -dim_max, y: -dim_mid, color: col_min },
+			Point { x: -dim_mid, y: dim_mid, color: col_min },
+			Point { x: -dim_mid, y: dim_mid, color: col_max },
+			Point { x: dim_mid, y: dim_mid, color: col_max },
+			Point { x: dim_mid, y: -dim_mid, color: col_max },
+			Point { x: -dim_mid, y: -dim_mid, color: col_max },
+			Point { x: -dim_mid, y: -dim_mid, color: col_min },
+		]
+	}
+}
+
+// An iterator that endlessly generates a sine wave of DAC points.
+//
+// The sine wave oscillates at a rate of once per second.
+struct SineWave {
+	point: u32,
+	points_per_frame: u16,
+	frames_per_second: f32,
+}
+
+impl Iterator for SineWave {
+	type Item = ether_dream::protocol::DacPoint;
+	fn next(&mut self) -> Option<Self::Item> {
+		let coloured_points_per_frame = self.points_per_frame - 1;
+		let i = (self.point % self.points_per_frame as u32) as u16;
+		let hz = 1.0;
+		let fract = i as f32 / coloured_points_per_frame as f32;
+		let phase = (self.point as f32 / coloured_points_per_frame as f32) / self.frames_per_second;
+		let amp = (hz * (fract + phase) * 2.0 * std::f32::consts::PI).sin();
+		let (r, g, b) = match i {
+			i if i == coloured_points_per_frame || i < 13 => (0, 0, 0),
+			_ => (u16::MAX, u16::MAX, u16::MAX),
+		};
+		let x_min = i16::MIN;
+		let x_max = i16::MAX;
+		let x = (x_min as f32 + fract * (x_max as f32 - x_min as f32)) as i16;
+		let y = (amp * x_max as f32) as i16;
+		let control = 0;
+		let (u1, u2) = (0, 0);
+		let p = ether_dream::protocol::DacPoint {
+			control,
+			x,
+			y,
+			i,
+			r,
+			g,
+			b,
+			u1,
+			u2,
+		};
+		// debug!("{:?}",p);
+		self.point += 1;
+		Some(p)
 	}
 }

src/device/helios.rs

@@ -1,8 +1,9 @@
-use crate::conf::HeliosConf;
+use std::time::SystemTime;
-use crate::device::{Device, PlaybackState, Status};
+///
-use crate::errors::{LJError, LJResult};
+/// Configure udev:
-use crate::point::{Color, Point};
+/// https://github.com/Grix/helios_dac/blob/master/docs/udev_rules_for_linux.md
-use chrono::Utc;
+///
+use helios_dac::{NativeHeliosDac, NativeHeliosDacController};
 use helios_dac::{
 	// Coordinate,
 	// Color,
@@ -10,11 +11,11 @@ use helios_dac::{
 	Frame,
 	// Point as HeliosPoint,
 };
-///
+use crate::conf::HeliosConf;
-/// Configure udev:
+use crate::device::{Device, Status, PlaybackState};
-/// https://github.com/Grix/helios_dac/blob/master/docs/udev_rules_for_linux.md
+use crate::errors::{LJError, LJResult};
-///
+use crate::point::{Color, Point};
-use helios_dac::{NativeHeliosDac, NativeHeliosDacController};
+use chrono::{DateTime, Utc};
 
 pub struct HeliosDevice {
 	pub conf: HeliosConf,
@@ -34,13 +35,17 @@ impl HeliosDevice {
 			return Err(Box::new(LJError::HeliosDeviceMissing));
 		};
 		let dac = device.open()?;
+		let now = SystemTime::now();
+		let now: DateTime<Utc> = now.into();
+		let last_traced_at = now.to_rfc3339();
+
 		Ok(Self {
 			conf: (*conf).clone(),
 			dac,
 			sent_points: 0,
 			state: PlaybackState::PREPARE,
 			lack: "".to_string(),
-            last_traced_at: "1985-04-12T23:20:50.52Z".to_string(),
+			last_traced_at,
 		})
 	}
 }
@@ -52,12 +57,15 @@ impl Device for HeliosDevice {
 			last_traced_at: self.last_traced_at.clone(),
 			properties: vec!["foo".to_string()],
 			playback_state: self.state,
-            capacity: self.sent_points,
+			capacity: self.sent_points as usize,
 			lack,
 		}
 	}
 
-    fn draw(&mut self, line: Vec<Point>, speed: u32) -> LJResult<()> {
+	fn draw(&mut self,
+	        line: Vec<Point>,
+	        speed: u32,
+	) -> LJResult<()> {
 		self.state = PlaybackState::IDLE;
 		while let Ok(DeviceStatus::NotReady) = self.dac.status() {}
 		self.state = PlaybackState::PLAYING;
@@ -77,76 +85,24 @@ impl Device for HeliosDevice {
 
 	fn grid(&mut self) -> Vec<Point> {
 		let dim_min = 0 as f32;
-        let dim_mid = 2047 as f32;
+		let dim_mid = 2047.0;
-        let dim_max = 4095 as f32;
+		let dim_max = 4095.0;
 		let col_min = Color { r: 0, g: 0, b: 0 };
-        let col_max = Color {
+		let col_max = Color { r: 255, g: 255, b: 255 };
-            r: 255,
-            g: 255,
-            b: 255,
-        };
 
 		vec![
-            Point {
+			Point { x: dim_min, y: dim_max, color: col_min },
-                x: dim_min,
+			Point { x: dim_min, y: dim_max, color: col_max },
-                y: dim_max,
+			Point { x: dim_max, y: dim_max, color: col_max },
-                color: col_min,
+			Point { x: dim_max, y: dim_min, color: col_max },
-            },
+			Point { x: dim_min, y: dim_min, color: col_max },
-            Point {
+			Point { x: dim_min, y: dim_min, color: col_min },
-                x: dim_min,
+			Point { x: dim_min, y: dim_mid, color: col_min },
-                y: dim_max,
+			Point { x: dim_min, y: dim_mid, color: col_max },
-                color: col_max,
+			Point { x: dim_mid, y: dim_mid, color: col_max },
-            },
+			Point { x: dim_mid, y: dim_min, color: col_max },
-            Point {
+			Point { x: dim_min, y: dim_min, color: col_max },
-                x: dim_max,
+			Point { x: dim_min, y: dim_min, color: col_min },
-                y: dim_max,
-                color: col_max,
-            },
-            Point {
-                x: dim_max,
-                y: dim_min,
-                color: col_max,
-            },
-            Point {
-                x: dim_min,
-                y: dim_min,
-                color: col_max,
-            },
-            Point {
-                x: dim_min,
-                y: dim_min,
-                color: col_min,
-            },
-            Point {
-                x: dim_min,
-                y: dim_mid,
-                color: col_min,
-            },
-            Point {
-                x: dim_min,
-                y: dim_mid,
-                color: col_max,
-            },
-            Point {
-                x: dim_mid,
-                y: dim_mid,
-                color: col_max,
-            },
-            Point {
-                x: dim_mid,
-                y: dim_min,
-                color: col_max,
-            },
-            Point {
-                x: dim_min,
-                y: dim_min,
-                color: col_max,
-            },
-            Point {
-                x: dim_min,
-                y: dim_min,
-                color: col_min,
-            },
 		]
 	}
 }

src/errors.rs

@@ -1,7 +1,7 @@
-use config::ConfigError;
-use redis::RedisError;
 use std::error::Error;
 use std::{fmt, io};
+use redis::RedisError;
+use config::ConfigError;
 
 pub type LJResult<T> = Result<T, Box<dyn std::error::Error>>;
 
@@ -44,7 +44,7 @@ impl Error for LJError {
 
 		match self {
 			RedisConnect(err) => Some(err),
-            _ => None,
+			_ => None
 		}
 	}
 }

src/framerate.rs

@@ -0,0 +1,39 @@
+use log::{debug, warn};
+use std::time::{Duration, Instant};
+use crate::errors::LJResult;
+use std::{thread};
+
+/// Converts helios Geometry to Helios
+#[derive(Debug, Clone, Copy)]
+pub struct Framerate {
+	prev_trace_time: Instant,
+	fps: u8,
+}
+
+impl Framerate {
+	pub fn new() -> LJResult<Self> {
+		Ok(Framerate {
+			prev_trace_time: Instant::now(),
+			fps: 20,
+		})
+	}
+	pub fn handle_time(&mut self) -> LJResult<()> {
+		let frame_time = 1000000000 / self.fps as u128;
+		let now = Instant::now();
+		// How long since last loop ?
+		let nanotime_spent = self.prev_trace_time.elapsed().as_nanos();
+		// Diw it go too fast? If so : sleep a bit
+		if frame_time > nanotime_spent {
+			let nanotime_towait = frame_time - nanotime_spent;
+			let dur = Duration::new(0, (nanotime_towait as f32 * 0.9) as u32);
+			// debug!("{:?} - {:?} : {:?}", nanotime_towait, self.prev_trace_time, now );
+			thread::sleep(dur);
+			debug!("Framerate OK");
+		} else {
+			warn!("Frame longer than expected {:?} > {:?}", nanotime_spent, frame_time, );
+		}
+
+		self.prev_trace_time = now;
+		Ok(())
+	}
+}

src/lib.rs

@@ -1,7 +1,8 @@
-pub mod conf;
-pub mod device;
-pub mod errors;
-pub mod point;
 pub mod redis_ctrl;
+pub mod conf;
+pub mod errors;
+pub mod device;
+pub mod point;
 pub mod transformer;
 pub mod worldstate;
+pub mod framerate;

src/main.rs

@@ -1,26 +1,28 @@
-mod conf;
-mod device;
-mod errors;
-mod point;
 ///
 /// Configure udev:
 /// https://github.com/Grix/helios_dac/blob/master/docs/udev_rules_for_linux.md
 ///
 mod redis_ctrl;
+mod conf;
+mod errors;
+mod point;
 mod transformer;
+mod device;
 mod worldstate;
+mod framerate;
 
-use conf::Conf;
 use device::device_factory;
-use env_logger::Builder;
-use errors::LJResult;
-use log::{/* warn, */ error, info, LevelFilter};
-use point::{Color, Point};
-use redis_ctrl::{Order, RedisCtrl};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
+use redis_ctrl::{RedisCtrl, Order};
+use conf::Conf;
+use errors::LJResult;
+use point::{Point, Color};
 use transformer::Transformers;
+use log::{LevelFilter, info, /* warn, */ error};
+use env_logger::Builder;
 use worldstate::WorldState;
+use framerate::Framerate;
 
 const DEFAULT_CONF_FILE: &str = "settings.toml";
 
@@ -33,11 +35,19 @@ pub fn main() {
 	}
 }
 
+
 fn run_all() -> LJResult<()> {
+	// Setup handler for interrupt Signals
+	let running = Arc::new(AtomicBool::new(true));
+	let r = running.clone();
+	ctrlc::set_handler(move || {
+		r.store(false, Ordering::SeqCst);
+	})?;
+
 	// Setup configuration file and set up logs
-    let filename = std::env::args()
+	let filename = std::env::args().nth(1).unwrap_or_else(|| {
-        .nth(1)
+		DEFAULT_CONF_FILE.to_string()
-        .unwrap_or_else(|| DEFAULT_CONF_FILE.to_string());
+	});
 
 	let config = Conf::new(&filename);
 	init_logging(&config);
@@ -51,31 +61,23 @@ fn run_all() -> LJResult<()> {
 
 	let mut world_state = rs.init_world_state().unwrap();
 	info!("WorldState: {:?}", world_state);
-    dbg!("worldstate.kpps: {}", world_state.kpps);
 
-    // Setup handler for interrupt Signals
-    let running = Arc::new(AtomicBool::new(true));
-    let r = running.clone();
-    ctrlc::set_handler(move || {
-        r.store(false, Ordering::SeqCst);
-    })?;
 
 	// Setup Laser Device based on conf
 	let mut tracer = device_factory(&config)?;
 	world_state.grid = tracer.grid();
 
-    // can't work, but we can add + Debug to Device to make it work...
-    //dbg!(tracer);
-
 	// Setup geometry transformers on points lists
 	let transformers = config.get_transformers();
 
+	// Setup framerate limiter
+	let mut framerate_handler = Framerate::new()?;
+
 	// Dispatch based on redis requests
 	while running.load(Ordering::SeqCst) {
 		rs.set_status(tracer.status())?;
-
+		framerate_handler.handle_time()?;
 		let order = rs.get_order(config.laser_id)?;
-
 		match order {
 			Order::Draw | Order::Black | Order::Grid => {
 				// 0 : Draw Normal point list
@@ -83,13 +85,19 @@ fn run_all() -> LJResult<()> {
 				// 3 : Draw GRID point list
 				world_state.draw_black = order == Order::Black;
 				world_state.draw_grid = order == Order::Grid;
-                let frame = get_next_frame(&config, &transformers, &mut rs, &world_state)?;
+				let frame = get_next_frame(
+					&config,
+					&transformers,
+					&mut rs,
+					&world_state,
+				)?;
 				// For now, draw all the time
 				tracer.draw(frame, world_state.kpps)?;
 			}
 			Order::Intensity => {
 				// 6 : Max Intensity Change     = reread redis key /intensity
-                world_state.intensity = rs.get_int("intensity")?.try_into()?;
+				world_state.intensity = rs.get_int("intensity")?
+					.try_into()?;
 			}
 			Order::Edh => {
 				// 1 : Get the new EDH          = reread redis key /EDH/lasernumber
@@ -98,16 +106,18 @@ fn run_all() -> LJResult<()> {
 			Order::Kpps => {
 				// 7 : kpps change              = reread redis key /kpps
 				world_state.kpps = rs.get_int("kpps")?;
-                //dbg!(world_state.kpps);
 			}
 			Order::ClientKey => {
 				world_state.client_key = rs.get_client_key()?;
 			}
-            // Order::ColorBalance => {},
+			Order::ColorBalance => {
+				let (r, g, b) = rs.get_color_balance()?;
+				world_state.color_balance = Color { r, g, b };
+			}
+			Order::Resampler => {
+				world_state.resampler = rs.get_resampler()?;
+			}
 			_ => {
-                // 4 : Resampler Change (longs and shorts lsteps)
-                // 5 : Client Key Change        = reread redis key /clientkey
-                // 8 : color balance change     = reread redis keys /red /green /blue
 				// 9 : poweroff LJ
 				info!("Order: {:?}", order);
 			}
@@ -121,13 +131,18 @@ fn run_all() -> LJResult<()> {
 
 fn init_logging(config: &LJResult<Conf>) {
 	if let Ok(ref config) = config {
-        if config.debug {
+		let level = if config.debug {
+			LevelFilter::Debug
+		} else {
+			LevelFilter::Info
+		};
 		let mut builder = Builder::from_default_env();
-            builder.filter(None, LevelFilter::Info).init();
+		builder
+			.filter(None, level)
+			.init();
 		info!("Debug mode enabled from configuration file");
 		return;
 	}
-    }
 	info!("Logging level inherited from env");
 	env_logger::init();
 }
@@ -138,7 +153,9 @@ fn get_next_frame(
 	rs: &mut RedisCtrl,
 	world_state: &WorldState,
 ) -> LJResult<Vec<Point>> {
-    let format_key = format!("{}{}", world_state.client_key, config.laser_id);
+	let format_key = format!("{}{}",
+	                         world_state.client_key,
+	                         config.laser_id);
 
 	// Handle the grid case
 
@@ -146,20 +163,20 @@ fn get_next_frame(
 		world_state.grid.clone()
 	} else {
 		let redis_line = rs.get_line(&format_key)?;
-        redis_line.into_iter().map(|tpl| tpl.into()).collect()
+		redis_line.into_iter()
+			.map(|tpl| tpl.into())
+			.collect()
 	};
 
 	for transformer in transformers {
 		line = transformer.apply(&line, world_state);
 	}
 
-
+	// info!("Draw Black -> {}", world_state.draw_black);
-    info!("Draw Black -> {}", world_state.draw_black);
+	// info!("Draw Grid -> {}", world_state.draw_grid);
-    info!("Draw Grid -> {}", world_state.draw_grid);
 
 	// LIMITER and BLACK
-    line = line
+	line = line.into_iter()
-        .into_iter()
 		.map(|p| {
 			let color = if world_state.draw_black {
 				Color { r: 0, g: 0, b: 0 }
@@ -170,10 +187,14 @@ fn get_next_frame(
 					b: p.color.b.min(world_state.intensity),
 				}
 			};
-            Point { color, ..p }
+			Point {
+				color,
+				..p
+			}
 		})
 		.collect();
 
 	//info!("Line: {:?}", line);
 	Ok(line)
 }
+

src/point.rs

@@ -1,4 +1,6 @@
 use ether_dream::protocol::DacPoint;
+use std::ops::Mul;
+
 
 #[derive(Debug, Clone, Copy, Default, PartialEq)]
 pub struct Point {
@@ -13,31 +15,18 @@ pub struct Color {
 	pub g: u8,
 	pub b: u8,
 }
+impl Mul<u8> for Color {
+    type Output = Self;
 
-impl Point {
+    fn mul(self, rhs: u8) -> Self {
-    pub fn diff(p1: &Self, p2: &Self) -> Self {
+	    Self{
-        Point {
+		    r: (255 * self.r as u16 / rhs as u16) as u8,
-            x: p1.x - p2.x,
+		    g: (255 * self.g as u16 / rhs as u16) as u8,
-            y: p1.y - p2.y,
+		    b: (255 * self.b as u16 / rhs as u16) as u8,
-            color: Color { r: 0, g: 0, b: 0 },
 	    }
     }
-
-    pub fn normalize(&mut self) -> Self {
-        let length = (self.x * self.x + self.y * self.y).sqrt();
-        self.x = self.x / length;
-        self.y = self.y / length;
-        *self
 }
 
-    pub fn cross(&self, pt: &Self) -> f32 {
-        self.x * pt.x + self.y * pt.y
-    }
-}
-
-// normalaize
-// diff
-
 impl From<Color> for u32 {
 	fn from(value: Color) -> Self {
 		let r = value.r as u32;
@@ -52,11 +41,7 @@ impl From<(f32, f32, u32)> for Point {
 		let r = (color >> 16) as u8;
 		let g = ((color >> 8) & 255) as u8;
 		let b = (color & 255) as u8;
-        Point {
+		Point { x, y, color: Color { r, g, b } }
-            x,
-            y,
-            color: Color { r, g, b },
-        }
 	}
 }
 
@@ -76,17 +61,21 @@ impl From<Point> for DacPoint {
 	fn from(pt: Point) -> DacPoint {
 		let control = 0;
 		let (u1, u2) = (0, 0);
-        let i = 255;
+		let i = 0;
-        DacPoint {
+		let x = pt.x.clamp(-32000.0, 32000.0);
+		let y = pt.y.clamp(-32000.0, 32000.0);
+		let pt = DacPoint {
 			control,
-            x: pt.x as i16,
+			x: x as i16,
-            y: pt.y as i16,
+			y: y as i16,
 			i,
-            r: pt.color.r.into(),
+			r: (pt.color.r as u16) * 255,
-            g: pt.color.g.into(),
+			g: (pt.color.g as u16) * 255,
-            b: pt.color.b.into(),
+			b: (pt.color.b as u16) * 255,
 			u1,
 			u2,
-        }
+		};
+		// debug!("point {:?}", pt);
+		pt
 	}
 }

src/redis_ctrl.rs

@@ -1,8 +1,8 @@
+use redis::{Client, Commands, Connection};
+use ron::de::from_str;
 use crate::device::Status;
 use crate::errors::{LJError, LJResult};
 use crate::worldstate::{WorldState, EDH};
-use redis::{Client, Commands, Connection};
-use ron::de::from_str;
 // use log::info;
 
 #[repr(u8)]
@@ -10,7 +10,6 @@ use ron::de::from_str;
 pub enum Order {
 	Draw = 0,
 	Edh,
-    //homography
 	Black,
 	Grid,
 	Resampler,
@@ -18,6 +17,7 @@ pub enum Order {
 	Intensity,
 	Kpps,
 	ColorBalance,
+	PowerOff
 }
 
 impl TryFrom<u8> for Order {
@@ -40,12 +40,14 @@ impl TryFrom<u8> for Order {
 			6 => Intensity,
 			7 => Kpps,
 			8 => ColorBalance,
-            _ => unreachable!(),
+			9 => PowerOff,
+			_ => unreachable!()
 		})
 	}
 }
 
 pub type Line = Vec<(f32, f32, u32)>;
+pub type Resampler = Vec<Vec<(f32,f32)>>;
 
 pub struct RedisCtrl {
 	pub client: Client,
@@ -55,13 +57,11 @@ pub struct RedisCtrl {
 
 impl RedisCtrl {
 	pub fn new(url: &str, laser_id: &u8) -> LJResult<Self> {
-        let client = Client::open(url).map_err(LJError::RedisConnect)?;
+		let client = Client::open(url)
-        let connection = client.get_connection().map_err(LJError::RedisConnect)?;
+			.map_err(LJError::RedisConnect)?;
-        Ok(RedisCtrl {
+		let connection = client.get_connection()
-            client,
+			.map_err(LJError::RedisConnect)?;
-            connection,
+		Ok(RedisCtrl { client, connection, laser_id: *laser_id })
-            laser_id: *laser_id,
-        })
 	}
 
 	pub fn get_line(&mut self, key: &str) -> LJResult<Line> {
@@ -86,11 +86,6 @@ impl RedisCtrl {
 		Ok(val.try_into()?)
 	}
 
-    /**
-    /lstt/lasernumber       etherdream last_status.playback_state  (0: idle   1: prepare   2: playing)
-    /cap/lasernumber        number of empty points sent to fill etherdream buffer (up to 1799)
-    /lack/lasernumber       "a": ACK   "F": Full  "I": invalid. 64 or 35 for no connection.
-     **/
 	pub fn set_status(&mut self, status: Status) -> LJResult<()> {
 		let lstt_key = format!("/lstt/{}", self.laser_id);
 		let cap_key = format!("/cap/{}", self.laser_id);
@@ -103,10 +98,10 @@ impl RedisCtrl {
 
 	pub fn init_world_state(&mut self) -> LJResult<WorldState> {
 		Ok(WorldState {
-            client_key: self.get_client_key().unwrap(),
+			client_key: self.get_client_key()?,
-            edh: self.get_edh().unwrap(),
+			edh: self.get_edh()?,
-            kpps: self.get_int("kpps").unwrap().try_into().unwrap(),
+			kpps: self.get_int("kpps")?.try_into()?,
-            intensity: self.get_int("intensity").unwrap().try_into().unwrap(),
+			intensity: self.get_int("intensity")?.try_into()?,
 			..WorldState::default()
 		})
 	}
@@ -125,6 +120,20 @@ impl RedisCtrl {
 		Ok(key)
 	}
 
+	pub fn get_color_balance(&mut self) -> LJResult<(u8, u8, u8)> {
+		Ok((
+			self.connection.get("/red")?,
+			self.connection.get("/green")?,
+			self.connection.get("/blue")?,
+		))
+	}
+
+	pub fn get_resampler(&mut self ) -> LJResult<Resampler> {
+		let val: String = self.connection.get(format!("/resampler/{}", self.laser_id))?;
+		let resampler : Resampler = from_str(&val)?;
+		Ok(resampler)
+	}
+
 	pub fn get_int(&mut self, key: &str) -> LJResult<u32> {
 		// Get new Int
 		let fmt = format!("/{key}/{}", self.laser_id);

src/transformer.rs

@@ -1,9 +1,9 @@
-//pub mod common;
-mod angle_optimisation;
 mod flip_horizontal;
 mod flip_vertical;
 mod grid;
+mod helios_to_etherdream;
 mod homography;
+mod intensity;
 mod replicate;
 mod rotate;
 mod translate;
@@ -12,15 +12,20 @@ use crate::point::Point;
 use crate::worldstate::WorldState;
 
 // re-export transformers to be abe to use it directly from transformer::
-pub use self::homography::Homography;
+pub use translate::Translate;
-pub use angle_optimisation::AngleOptimisation;
+pub use replicate::Replicate;
+pub use rotate::Rotate;
 pub use flip_horizontal::FlipHorizontal;
 pub use flip_vertical::FlipVertical;
 pub use grid::Grid;
-pub use replicate::Replicate;
+pub use self::homography::Homography;
-pub use rotate::Rotate;
+pub use helios_to_etherdream::HeliosToEtherdream;
-pub use translate::Translate;
+pub use intensity::Intensity;
 
 pub trait Transformers {
-    fn apply(&self, point_list: &[Point], world_state: &WorldState) -> Vec<Point>;
+    fn apply(
+	&self,
+	point_list: &[Point],
+	world_state: &WorldState
+    ) -> Vec<Point>;
 }

src/transformer/angle_optimisation.rs

@@ -1,129 +0,0 @@
-use crate::point::{Color, Point};
-use crate::transformer::Transformers;
-use crate::worldstate::WorldState;
-
-use serde::{Deserialize, Serialize};
-use std::f64::consts::PI;
-//use std::cmp::min;
-
-/// Angle Optimisation
-
-#[derive(Serialize, Deserialize, Debug, Clone, Copy)]
-pub struct AngleOptimisation {
-    coef: f64,
-    //pps: u16,
-}
-
-fn color_not_zero(p1: &Point, p2: &Point, p3: &Point) -> bool {
-    let c0 = Color { r: 0, g: 0, b: 0 };
-    if p1.color == c0 || p2.color == c0 || p3.color == c0 {
-        false
-    } else {
-        true
-    }
-}
-
-fn pos_different(p1: &Point, p2: &Point) -> bool {
-    if p1.x == p2.x && p1.y == p2.y {
-        false
-    } else {
-        true
-    }
-}
-
-/*
- * Le temps a attendre a un angle est toujours le meme, peu importe les kpps.
- * Donc le nombre de point a rajouter est proportionelle a la vitesse du laser.
- *
- *  kpps /
- * */
-
-fn color_same(p1: &Point, p2: &Point) -> bool {
-    if p1.color.r == p2.color.r && p1.color.g == p2.color.g && p1.color.b == p2.color.b {
-        true
-    } else {
-        false
-    }
-}
-
-// quand on rajoute un point, on le rejoute ou et avec quelle couleur
-//  -> j'ai l'impression qu'on le rajoute surtout a l'arriver
-
-fn get_prev(pl: &[Point], id: usize) -> (Option<&Point>, usize) {
-    for i in (0..id).rev() {
-        if pos_different(&pl[id], &pl[i]) {
-            return (Some(&pl[i]), id - i);
-        }
-    }
-    (None, id - 0)
-}
-
-fn get_next(pl: &[Point], id: usize) -> (Option<&Point>, usize) {
-    for i in id..(pl.len() - 1) {
-        if pos_different(&pl[id], &pl[i]) {
-            return (Some(&pl[i]), i - id);
-        }
-    }
-    (None, pl.len() - id - 1)
-}
-
-fn max(v1: f64, v2: f64) -> f64 {
-    if v1 > v2 {
-        v1
-    } else {
-        v2
-    }
-}
-
-impl Transformers for AngleOptimisation {
-    fn apply(&self, pl: &[Point], _ws: &WorldState) -> Vec<Point> {
-        let c0 = Color { r: 0, g: 0, b: 0 };
-        let mut v = vec![];
-
-        let to_add_max = _ws.kpps as f64 / self.coef; // for 180 deg
-        let to_add_min = max(to_add_max / 1.5, 2.); // for 180 deg
-
-        let mut first_blanc = pl[0].clone();
-        first_blanc.color = Color{r:0, g:0, b:0};
-        for _ in 0..(to_add_max as u32) {
-            v.push(first_blanc); // push first
-        }
-        v.push(pl[0]);
-        for i in 1..(pl.len() - 1) {
-            let node = &pl[i];
-            if let ((Some(prev), dist_prev), (Some(next), dist_next)) =
-                (get_prev(pl, i), get_next(pl, i))
-            {
-                let d1 = Point::diff(node, prev).normalize();
-                let d2 = Point::diff(next, node).normalize();
-                let angle = (d1.cross(&d2) as f64).acos();
-                let to_add = ((to_add_max - to_add_min) * (angle / PI) + to_add_min) as usize;
-                println!("\nangle: {}", (angle / PI * 180.));
-                dbg!(to_add);
-                dbg!(to_add_max);
-                for _ in 0..to_add {
-                    v.push(*node);
-                }
-            } else {
-                v.push(*node);
-            };
-            //v.push(*node); // push node
-        }
-        for _ in 0..(to_add_max as u32) {
-            v.push(pl[pl.len() - 2]); // push last
-        }
-        for _ in 0..(to_add_max as u32) {
-            v.push(pl[pl.len() - 1]); // push last
-        }
-        println!("\tbefore: {}\tafter: {}", pl.len(), v.len());
-
-        v
-    }
-}
-
-/*
- *  |\
- *  | \
- *  |  \
- *  |  |
- * */

src/transformer/flip_horizontal.rs

@@ -1,8 +1,8 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
 
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Flip Horizontal
 
@@ -13,15 +13,12 @@ pub struct FlipHorizontal {
 
 impl Transformers for FlipHorizontal {
     fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {
-        point_list
+    point_list.iter()
-            .iter()
         .map(| pt | {
             let dx = pt.x - self.x;
-                Point {
+            Point { x: dx - 2. * dx,
-                    x: dx - 2. * dx,
                 ..*pt
             }
-            })
+        }).collect()
-            .collect()
     }
 }

src/transformer/flip_vertical.rs

@@ -1,8 +1,8 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
 
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Flip Vertical
 
@@ -13,15 +13,12 @@ pub struct FlipVertical {
 
 impl Transformers for FlipVertical {
     fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {
-        point_list
+    point_list.iter()
-            .iter()
         .map(| pt | {
             let dy = pt.y - self.y;
-                Point {
+            Point { y: dy - 2. * dy,
-                    y: dy - 2. * dy,
                 ..*pt
             }
-            })
+        }).collect()
-            .collect()
     }
 }

src/transformer/grid.rs

@@ -1,38 +1,47 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
 
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Translate
 
 #[derive(Serialize,Deserialize,Debug,Clone,Copy)]
 pub struct Grid {
     width: f32,
-    height: f32,
+    height: f32
 }
 
 fn square_box(size: f32, color: u32) -> Vec<(f32, f32, u32)> {
     vec![
 	(-size, -size, 0),
 	(-size, -size, color),
+
 	(0.0, -size, color),
 	(0.0, -size, color),
+	
 	(size, -size, color),
 	(size, -size, color),
+
 	(size, 0.0, color),
 	(size, 0.0, color),
+
 	(size, size,  color),
 	(size, size,  color),
+
 	(0.0, size,  color),
 	(0.0, size,  color),
+
 	(-size, size,  color),
 	(-size, size,  color),
+
 	(-size, 0.0,  color),
 	(-size, 0.0,  color),	
+
 	(-size, -size,  color),
 	(-size, -size,  color),
-        (-size, -size, 0),
+
+	(-size, -size, 0)
     ]
 }
 
@@ -42,7 +51,8 @@ impl Transformers for Grid {
 	let mut line = square_box(2000.0, 255);
 	line.append(&mut sq1);
 
-        let line: Vec<Point> = line.into_iter().map(|tpl| tpl.into()).collect();
+	let line: Vec<Point> = line.into_iter()
+	    .map(|tpl| tpl.into()).collect();
 	line
     }
 }

src/transformer/helios_to_etherdream.rs

@@ -0,0 +1,27 @@
+use crate::transformer::Transformers;
+use crate::point::Point;
+use crate::worldstate::WorldState;
+
+use serde::{Serialize, Deserialize};
+
+/// Converts helios Geometry to Helios
+#[allow(dead_code)]
+#[derive(Serialize, Deserialize, Debug, Clone, Copy)]
+pub struct HeliosToEtherdream {
+}
+
+impl Transformers for HeliosToEtherdream {
+	fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {
+		// debug!("list helios {:?}", point_list);
+		let out = point_list.iter().map(|pt| {
+			Point {
+				x: 8.0 * (pt.x - 2047.0),
+				y: 8.0 * (pt.y - 2047.0),
+				..*pt
+			}
+		}).collect();
+		// debug!("list etherdream {:?}", out);
+		out
+	}
+}
+

src/transformer/homography.rs

@@ -1,7 +1,7 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::{WorldState,EDH};
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Homography
 
@@ -12,7 +12,9 @@ impl Transformers for Homography {
     fn apply(&self, point_list: &[Point], ws: &WorldState) -> Vec<Point> {	
 	let edh : &EDH = &ws.edh;
 
-        point_list.iter().map(|point| edh.apply(point)).collect()
+	point_list.iter()
+	    .map(| point | edh.apply(point))
+	    .collect()
     }
 }
 
@@ -22,67 +24,41 @@ mod tests {
 
     #[test]
     fn identity_matrix_let_point_unchanged() {
-        let p0 = Point {
+	let p0 = Point { x: -1500.0, y: 1500.0, ..Point::default() };
-            x: -1500.0,
-            y: 1500.0,
-            ..Point::default()
-        };
 
 	let edh = EDH::new(vec![
 	    vec![ 1.0, 0.0, 0.0 ],
 	    vec![ 0.0, 1.0, 0.0 ],
-            vec![0.0, 0.0, 1.0],
+	    vec![ 0.0, 0.0, 1.0 ]
-        ])
+	]).unwrap();
-        .unwrap();
 
-        let ws = WorldState {
+	let ws = WorldState { edh : edh, ..WorldState::default() };
-            edh: edh,
-            ..WorldState::default()
-        };
 	
 	let homography = Homography{};
 	let result = homography.apply(&[p0], &ws);
 	
-        assert_eq!(
+	assert_eq!(result, vec![Point { x: -1500.0,
-            result,
-            vec![Point {
-                x: -1500.0,
 					y: 1500.0,
-                ..Point::default()
+					..Point::default() }]);
-            }]
-        );
     }
 
     #[test]
     fn rotation_matrix_rotate_the_point() {
-        let p0 = Point {
+	let p0 = Point { x: -1500.0, y: 1500.0, ..Point::default() };
-            x: -1500.0,
-            y: 1500.0,
-            ..Point::default()
-        };
 
 	let edh = EDH::new(vec![
 	    vec![ 1.24107321e-03, 1.00500127e-03, 7.15439347e-01],
 	    vec![-9.93223912e-04, 1.22652939e-03,-6.98671238e-01],
-            vec![1.06017142e-17, -4.69459541e-17, 3.32700590e-05],
+	    vec![ 1.06017142e-17,-4.69459541e-17, 3.32700590e-05]
-        ])
+	]).unwrap();
-        .unwrap();
 
-        let ws = WorldState {
+	let ws = WorldState { edh : edh, ..WorldState::default() };
-            edh: edh,
-            ..WorldState::default()
-        };
 	
 	let homography = Homography{};
 	let result = homography.apply(&[p0], &ws);
 	
-        assert_eq!(
+	assert_eq!(result, vec![Point { x: 10860.557,
-            result,
-            vec![Point {
-                x: 10860.557,
 					y: 79078.87,
-                ..Point::default()
+					..Point::default() }]);
-            }]
-        );
     }
 }

src/transformer/intensity.rs

@@ -0,0 +1,28 @@
+use log::debug;
+use crate::transformer::Transformers;
+use crate::point::Point;
+use crate::worldstate::WorldState;
+
+use serde::{Serialize, Deserialize};
+
+/// Converts helios Geometry to Helios
+#[allow(dead_code)]
+#[derive(Serialize, Deserialize, Debug, Clone, Copy)]
+pub struct Intensity {
+}
+
+impl Transformers for Intensity {
+	fn apply(&self, point_list: &[Point], ws: &WorldState) -> Vec<Point> {
+		// debug!("list helios {:?}", point_list);
+		let out = point_list.iter().map(|pt| {
+			Point {
+				x: pt.x,
+				y: pt.y,
+				color: pt.color * ws.intensity
+			}
+		}).collect();
+		debug!("list intensity {:?}", out);
+		out
+	}
+}
+

src/transformer/replicate.rs

@@ -1,8 +1,8 @@
-use crate::point::{Color, Point};
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
 
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Replicate
 
@@ -10,34 +10,18 @@ use serde::{Deserialize, Serialize};
 #[derive(Serialize,Deserialize,Debug,Clone,Copy)]
 pub enum Replicate {
     Until(usize),
-    Times(usize),
+    Times(usize)
 }
 
 impl Transformers for Replicate {
     fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {
 	let mut point_list2 = vec![];
-
 	match self {
 	    Replicate::Until(n) => {
 		while point_list2.len() < *n {
-                    if point_list.len() == 0 {
-                        // to prevent infinit loop in case of empty frame
-                        point_list2.append(
-                            &mut vec![
-                                Point {
-                                    x: 0.,
-                                    y: 0.,
-                                    color: Color { r: 0, g: 0, b: 0 }
-                                };
-                                *n
-                            ]
-                            .to_vec(),
-                        );
-                    } else {
 		    point_list2.append(&mut point_list.to_vec());
 		}
-                }
+	    },
-            }
 	    Replicate::Times(n) => {
 		for _ in 0..*n {
 		    point_list2.append(&mut point_list.to_vec());		    
@@ -47,3 +31,4 @@ impl Transformers for Replicate {
 	point_list2
     }
 }
+

src/transformer/rotate.rs

@@ -1,8 +1,8 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
 
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 //use std::f32::consts::PI;
 
 /// Rotate
@@ -12,12 +12,12 @@ pub struct Rotate {
     cx: f32,
     cy: f32,
     angle: f32,
+
 }
 
 impl Transformers for Rotate {
     fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {
-        point_list
+    point_list.iter()
-            .iter()
         .map(| pt | {
             let dx = pt.x - self.cx;
             let dy = pt.y - self.cy;
@@ -25,8 +25,11 @@ impl Transformers for Rotate {
             let sin = self.angle.sin();
             let x = (dx * cos - dy * sin) + self.cx; 
             let y = (dx * sin + dy * cos) + self.cy; 
-                Point { x, y, ..*pt }
+            Point { x,
-            })
+                y,
-            .collect()
+                ..*pt
+            }
+        }).collect()
     }
 }
+

src/transformer/translate.rs

@@ -1,25 +1,24 @@
-use crate::point::Point;
 use crate::transformer::Transformers;
+use crate::point::Point;
 use crate::worldstate::WorldState;
-use serde::{Deserialize, Serialize};
+use serde::{Serialize,Deserialize};
 
 /// Translate
 
 #[derive(Serialize,Deserialize,Debug,Clone,Copy)]
 pub struct Translate {
     pub x: f32,
-    pub y: f32,
+    pub y: f32
 }
 
 impl Transformers for Translate {
     fn apply(&self, point_list: &[Point], _ws: &WorldState) -> Vec<Point> {	
-        point_list
+	point_list.iter()
-            .iter()
+	    .map(| pt | {
-            .map(|pt| Point {
+		Point { x: pt.x + self.x,
-                x: pt.x + self.x,
 			y: pt.y + self.y,
 			..*pt
-            })
+		}
-            .collect()
+	    }).collect()
     }
 }

src/worldstate.rs

@@ -1,7 +1,8 @@
+use crate::point::{Point, Color};
+use nalgebra::base::{Matrix3, Matrix1x3};
 use crate::errors::{LJError, LJResult};
-use crate::point::{Color, Point};
 use log::debug;
-use nalgebra::base::{Matrix1x3, Matrix3};
+use crate::redis_ctrl::Resampler;
 
 #[derive(Debug, Default)]
 pub struct EDH {
@@ -10,15 +11,17 @@ pub struct EDH {
 
 impl EDH {
 	pub fn new(vec: Vec<Vec<f32>>) -> LJResult<EDH> {
-        if vec.len() != 3 || vec[0].len() != 3 || vec[1].len() != 3 || vec[2].len() != 3 {
+		if vec.len() != 3 ||
+			vec[0].len() != 3 ||
+			vec[1].len() != 3 ||
+			vec[2].len() != 3 {
 			return Err(Box::new(LJError::BadEDH));
 		}
 
 		// this is the matrix already transposed.
-        let matrix = Matrix3::new(
+		let matrix = Matrix3::new(vec[0][0], vec[1][0], vec[2][0],
-            vec[0][0], vec[1][0], vec[2][0], vec[0][1], vec[1][1], vec[2][1], vec[0][2], vec[1][2],
+		                          vec[0][1], vec[1][1], vec[2][1],
-            vec[2][2],
+		                          vec[0][2], vec[1][2], vec[2][2]);
-        );
 
 		Ok(EDH { matrix })
 	}
@@ -26,11 +29,7 @@ impl EDH {
 	pub fn apply(&self, point: &Point) -> Point {
 		let p = Matrix1x3::new(point.x, point.y, 1.0);
 		let p = p * self.matrix;
-        let new_p = Point {
+		let new_p = Point { x: p[0] / p[2], y: p[1] / p[2], ..*point };
-            x: p[0] / p[2],
-            y: p[1] / p[2],
-            ..*point
-        };
 
 		debug!("{:?} => {:?}", point, new_p);
 
@@ -41,7 +40,7 @@ impl EDH {
 #[derive(Debug, Default)]
 pub struct WorldState {
 	pub edh: EDH,
-    pub resampler: Vec<f32>,
+	pub resampler: Resampler,
 	pub client_key: String,
 	pub intensity: u8,
 	pub kpps: u32,
@@ -49,6 +48,7 @@ pub struct WorldState {
 	pub draw_black: bool,
 	pub draw_grid: bool,
 	pub grid: Vec<Point>,
+	pub color_balance: Color,
 }
 
 impl WorldState {}

tests/test_conf.rs

@@ -1,4 +1,4 @@
-use lj_rust::conf::{Conf, DacFamily, EtherDreamConf, HeliosConf};
+use lj_rust::conf::{Conf, DacFamily, HeliosConf, EtherDreamConf};
 
 #[test]
 fn it_loads_a_valid_conf() {