fix: i in point for etherdream is meh

examples/etherdream.rs

@@ -129,7 +129,7 @@ impl Iterator for SineWave {
 			_ => (std::u16::MAX, std::u16::MAX, std::u16::MAX),
 		};
 		let x_min = std::i16::MIN;
-		let x_max = std::i16::MAX;
+		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;

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

@@ -48,7 +48,9 @@ pub enum TransformConf {
     #[serde(rename = "grid")] 
     Grid(transformer::Grid),
     #[serde(rename = "homography")] 
-    Homography(transformer::Homography)
+    Homography(transformer::Homography),
+    #[serde(rename = "helios_to_etherdream")]
+    HeliosToEtherdream(transformer::HeliosToEtherdream),
 }
 
 
@@ -73,6 +75,7 @@ impl Conf {
 		TransformConf::FlipV(r) => Box::new(*r),		
 		TransformConf::Grid(r) => Box::new(*r),
 		TransformConf::Homography(r) => Box::new(*r),
+		TransformConf::HeliosToEtherdream(r) => Box::new(*r),
 	    };
 	    v.push(t);
 	}

src/device.rs

@@ -42,7 +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,
 }
 

src/device/etherdream.rs

@@ -1,16 +1,20 @@
-use std::time;
+#[warn(unused_imports)]
+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::SystemTime;
+use std::time;
+use std::time::{Duration, SystemTime};
 
 use crate::conf::EtherDreamConf;
 use crate::device::{Device, Status, PlaybackState};
 use crate::errors::{LJError, LJResult};
 use crate::point::{Color, Point};
 use ether_dream::protocol::{DacBroadcast, DacResponse};
-use log::{debug, info, warn};
+
 
 #[warn(dead_code)]
 pub struct EtherdreamDevice {
@@ -114,14 +118,20 @@ impl EtherdreamDevice {
 		Ok(stream)
 	}
 
-	fn points_capacity(&self) -> u16 {
+	fn points_capacity(&self) -> usize {
 		/***
 		Determine the number of points needed to fill the DAC.
 		 ***/
 		// Fixme thread 'main' panicked at 'attempt to subtract with overflow', src/device/etherdream.rs:144:24
-		let n_points = self.dac.buffer_capacity as u16 - self.stream.dac().dac.status.buffer_fullness as u16 - 1;
+		let n_points = self.dac.buffer_capacity as usize - self.stream.dac().dac.status.buffer_fullness as usize - 1;
 		n_points
 	}
+
+	fn ping(&mut self) -> LJResult<()> {
+
+		Ok(self.stream.queue_commands().ping().submit()?)
+
+	}
 }
 
 impl Device for EtherdreamDevice {
@@ -135,37 +145,46 @@ impl Device for EtherdreamDevice {
 		let now: DateTime<Utc> = now.into();
 		let now = now.to_rfc3339();
 
-		let status = Status {
+		Status {
 			last_traced_at: now,
 			properties: vec!["foo".to_string()],
 			playback_state,
 			capacity: self.points_capacity(),
 			lack: self.dac_response.to_string(),
-		};
+		}
 		// debug!("Dac Status: {:?} ", status );
 		// debug!("Etherdream Dac {:?} ", self.dac );
-		debug!("Stream dac{:?}", self.stream.dac());
-		status
+		// debug!("Stream dac{:?}", self.stream.dac());
+		// status
 	}
 
 	fn draw(&mut self,
 	        line: Vec<Point>,
 	        _speed: u32,
 	) -> LJResult<()> {
-		let n_points = self.points_capacity();
-		// let n_points = &line.len();
-		debug!("Etherdream::device draw Generating {:?} points", n_points);
-
-
+		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 as usize {
+					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 as usize)
+					chunk.into_iter()
+						.map(|point| (*point).into())
+						.take(chunk_size as usize)
 				)
-			// .data(sine_wave.by_ref().take(n_points as usize))
-
 				.submit() {
 				Err(err) => {
 					// We should account for
@@ -188,9 +207,10 @@ impl Device for EtherdreamDevice {
 				}
 				Ok(_) => {
 					self.dac_response = DacResponse::ACK;
-				debug!("Draw is ok");
+					// debug!("Draw is ok");
 				}
 			};
+		}
 		Ok(())
 	}
 
@@ -274,7 +294,7 @@ impl Iterator for SineWave {
 			u1,
 			u2,
 		};
-		debug!("{:?}",p);
+		// debug!("{:?}",p);
 		self.point += 1;
 		Some(p)
 	}

src/device/helios.rs

@@ -57,7 +57,7 @@ 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,
 		}
 	}

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

@@ -5,3 +5,4 @@ pub mod device;
 pub mod point;
 pub mod transformer;
 pub mod worldstate;
+pub mod framerate;

src/main.rs

@@ -9,6 +9,7 @@ mod point;
 mod transformer;
 mod device;
 mod worldstate;
+mod framerate;
 
 use device::device_factory;
 use std::sync::atomic::{AtomicBool, Ordering};
@@ -21,6 +22,7 @@ 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";
 
@@ -68,9 +70,13 @@ fn run_all() -> LJResult<()> {
 	// 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())?;
+		let _ = framerate_handler.handle_time()?;
 		let order = rs.get_order(config.laser_id)?;
 		match order {
 			Order::Draw | Order::Black | Order::Grid => {

src/point.rs

@@ -1,5 +1,6 @@
 use ether_dream::protocol::DacPoint;
 
+
 #[derive(Debug, Clone, Copy, Default, PartialEq)]
 pub struct Point {
 	pub x: f32,
@@ -48,10 +49,10 @@ impl From<Point> for DacPoint {
 	fn from(pt: Point) -> DacPoint {
 		let control = 0;
 		let (u1, u2) = (0, 0);
-		let i = 255;
+		let i = 0;
 		let x = pt.x.clamp(-32000.0, 32000.0);
 		let y = pt.y.clamp(-32000.0, 32000.0);
-		DacPoint {
+		let pt = DacPoint {
 			control,
 			x: x as i16,
 			y: y as i16,
@@ -61,6 +62,8 @@ impl From<Point> for DacPoint {
 			b: (pt.color.b as u16) * 255,
 			u1,
 			u2,
-		}
+		};
+		// debug!("point {:?}", pt);
+		pt
 	}
 }

src/transformer.rs

@@ -6,6 +6,7 @@ mod flip_horizontal;
 mod flip_vertical;
 mod grid;
 mod homography;
+mod helios_to_etherdream;
 
 use crate::point::Point;
 use crate::worldstate::WorldState;
@@ -18,6 +19,7 @@ pub use flip_horizontal::FlipHorizontal;
 pub use flip_vertical::FlipVertical;
 pub use grid::Grid;
 pub use self::homography::Homography;
+pub use helios_to_etherdream::HeliosToEtherdream;
 
 pub trait Transformers {
     fn apply(

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
+	}
+}
+