initial commit

Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "lazer"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+helios-dac = { version = "0.1", default-features = false, features = ["native"] }
+redis = "0.23.0"
+ron = "0.8.0"
+serde = { version = "1.0.163", features = ["derive"] }

src/main.rs

@@ -0,0 +1,90 @@
+///
+/// Configure udev:
+/// https://github.com/Grix/helios_dac/blob/master/docs/udev_rules_for_linux.md
+///
+
+use helios_dac::{Frame,
+		 Point,
+		 DeviceStatus,
+		 // Coordinate,
+		 Color};
+
+use redis::{ //RedisResult,
+    Client,
+    Connection,
+    Commands
+};
+
+use ron::de::from_str;
+
+type Line = Vec<(f32,f32,u32)>;
+
+
+const CENTER : (u16,u16) = (2000, 2000);
+
+pub fn main() -> Result<(), Box<dyn std::error::Error>> {
+    use helios_dac::NativeHeliosDacController;
+
+    let client = Client::open("redis://127.0.0.1/")?;
+    let mut con = client.get_connection()?;
+
+    let controller = NativeHeliosDacController::new()?;
+    let devices = controller.list_devices()?;
+    
+    let device = devices.into_iter().next().unwrap();
+    let mut device = device.open()?;
+    
+    for _ in 0..100 {
+	let frame = get_next_frame(1000, &mut con)?;
+
+	while let Ok(DeviceStatus::NotReady) = device.status() {
+	}
+        device.write_frame(frame)?;
+    }
+    
+    device.stop()?;
+    Ok(())
+}
+
+fn get_next_frame(
+    speed: u32,
+    con: &mut Connection
+) -> Result<Frame, Box<dyn std::error::Error>> {
+    let val : String = con.get("/pl/0/0")?;
+    let line : Line = from_str(&val)?;
+    let line : Vec<Point> = line.iter()
+	.map(tuple_to_point)
+	.collect();
+    
+    let mut line2 = vec![];
+    while line2.len() < 48 {
+	for p in &line {
+	    line2.push(*p);
+	}
+    }
+    
+    Ok(Frame::new(speed, line2))
+}
+
+fn tuple_to_point(tpl: &(f32,f32,u32)) -> Point {
+    let (x, y, col) = tpl;
+    
+    let r = (col >> 16) as u8;
+    let g = ((col >> 8) & 255) as u8;
+    let b = (col & 255) as u8;
+    
+    let x = CENTER.0 + *x as u16;
+    let y = CENTER.1 + *y as u16;
+
+    if x >= 4096 || y >= 4096 {
+	println!("WARN: coordinate out of range: {} {}", x, y);
+    }
+    let x = x.clamp(0, 4095);
+    let y = y.clamp(0, 4095);
+    
+    Point {
+        coordinate: (x, y).into(),
+        color: Color::new(r, g, b),
+        intensity: 0xFF
+    }
+}