diff --git a/src/conf.rs b/src/conf.rs
index 4ddf686..9cff95c 100644
--- a/src/conf.rs
+++ b/src/conf.rs
@@ -1,101 +1,106 @@
 use config::Config;
-use serde::{Serialize,Deserialize};
-use crate::errors::{LJError,LJResult};
+use serde::{Serialize, Deserialize};
+use crate::errors::{LJError, LJResult};
 use crate::transformer;
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Conf {
-    pub laser_id: u8,
-    pub debug: bool,
-    pub redis_url: String,
-    pub dac: DacFamily,
-    #[serde(default)]
-    pub transformers: Vec<TransformConf>
+	pub laser_id: u8,
+	pub debug: bool,
+	pub redis_url: String,
+	pub dac: DacFamily,
+	#[serde(default)]
+	pub transformers: Vec<TransformConf>,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum DacFamily {
-    #[serde(rename = "helios")] 
-    Helios(HeliosConf),
-    #[serde(rename = "etherdream")] 
-    Etherdream(EtherDreamConf),
-    #[serde(rename = "dummy")] 
-    Dummy,
+	#[serde(rename = "helios")]
+	Helios(HeliosConf),
+	#[serde(rename = "etherdream")]
+	Etherdream(EtherDreamConf),
+	#[serde(rename = "dummy")]
+	Dummy,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct HeliosConf {
-    pub id: u8
+	pub id: u8,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct EtherDreamConf {
-    pub ip: String
+	pub ip: String,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum TransformConf {
-    #[serde(rename = "translate")] 
-    Translate(transformer::Translate),
-    #[serde(rename = "replicate")] 
-    Replicate(transformer::Replicate),
-    #[serde(rename = "rotate")] 
-    Rotate(transformer::Rotate),
-    #[serde(rename = "flip_horizontal")] 
-    FlipH(transformer::FlipHorizontal),
-    #[serde(rename = "flip_vertical")] 
-    FlipV(transformer::FlipVertical),    
-    #[serde(rename = "grid")] 
-    Grid(transformer::Grid),
-    #[serde(rename = "homography")] 
-    Homography(transformer::Homography),
-    #[serde(rename = "helios_to_etherdream")]
-    HeliosToEtherdream(transformer::HeliosToEtherdream),
+	#[serde(rename = "translate")]
+	Translate(transformer::Translate),
+	#[serde(rename = "replicate")]
+	Replicate(transformer::Replicate),
+	#[serde(rename = "rotate")]
+	Rotate(transformer::Rotate),
+	#[serde(rename = "flip_horizontal")]
+	FlipH(transformer::FlipHorizontal),
+	#[serde(rename = "flip_vertical")]
+	FlipV(transformer::FlipVertical),
+	#[serde(rename = "grid")]
+	Grid(transformer::Grid),
+	#[serde(rename = "homography")]
+	Homography(transformer::Homography),
+	#[serde(rename = "helios_to_etherdream")]
+	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()?;
-        
-	let conf : Conf = settings.try_deserialize().map_err(LJError::Config)?;
-	Ok(conf)
-    }
+	pub fn new(path: &str) -> LJResult<Conf> {
+		let settings = Config::builder()
+			.add_source(config::File::with_name(path))
+			.build()?;
 
-    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::Homography(r) => Box::new(*r),
-		TransformConf::HeliosToEtherdream(r) => Box::new(*r),
-	    };
-	    v.push(t);
+		let conf: Conf = settings.try_deserialize().map_err(LJError::Config)?;
+		Ok(conf)
 	}
-	v
-    }
 
-    #[allow(dead_code)]
-    pub fn dump() {
-	let conf = Conf {
-	    laser_id: 0,
-	    debug: true,
-	    redis_url: "redis://127.0.0.1:6379/".to_string(),
-	    dac: DacFamily::Helios(HeliosConf { id: 0 }),
-	    transformers: vec![
-		TransformConf::Translate(transformer::Translate { x: 2000.0,
-								  y: 2000.0 } ),
-		TransformConf::Replicate(transformer::Replicate::Until(48))
-	    ]
-	};
-	let s = toml::to_string(&conf).unwrap();
-	println!("{}", s);
-    }
+	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::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::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);
+		}
+		v
+	}
+
+	#[allow(dead_code)]
+	pub fn dump() {
+		let conf = Conf {
+			laser_id: 0,
+			debug: true,
+			redis_url: "redis://127.0.0.1:6379/".to_string(),
+			dac: DacFamily::Helios(HeliosConf { id: 0 }),
+			transformers: vec![
+				TransformConf::Translate(transformer::Translate {
+					x: 2000.0,
+					y: 2000.0,
+				}),
+				TransformConf::Replicate(transformer::Replicate::Until(48)),
+			],
+		};
+		let s = toml::to_string(&conf).unwrap();
+		println!("{}", s);
+	}
 }
diff --git a/src/point.rs b/src/point.rs
index 273bfbc..21b5694 100644
--- a/src/point.rs
+++ b/src/point.rs
@@ -1,4 +1,5 @@
 use ether_dream::protocol::DacPoint;
+use std::ops::Mul;
 
 
 #[derive(Debug, Clone, Copy, Default, PartialEq)]
@@ -14,6 +15,17 @@ pub struct Color {
 	pub g: u8,
 	pub b: u8,
 }
+impl Mul<u8> for Color {
+    type Output = Self;
+
+    fn mul(self, rhs: u8) -> Self {
+	    Self{
+		    r: (255 * self.r as u16 / rhs as u16) as u8,
+		    g: (255 * self.g as u16 / rhs as u16) as u8,
+		    b: (255 * self.b as u16 / rhs as u16) as u8,
+	    }
+    }
+}
 
 impl From<Color> for u32 {
 	fn from(value: Color) -> Self {
diff --git a/src/transformer.rs b/src/transformer.rs
index 2b9465f..ae66f8b 100644
--- a/src/transformer.rs
+++ b/src/transformer.rs
@@ -1,12 +1,12 @@
-//pub mod common;
-mod translate;
-mod replicate;
-mod rotate;
 mod flip_horizontal;
 mod flip_vertical;
 mod grid;
-mod homography;
 mod helios_to_etherdream;
+mod homography;
+mod intensity;
+mod replicate;
+mod rotate;
+mod translate;
 
 use crate::point::Point;
 use crate::worldstate::WorldState;
@@ -20,6 +20,7 @@ pub use flip_vertical::FlipVertical;
 pub use grid::Grid;
 pub use self::homography::Homography;
 pub use helios_to_etherdream::HeliosToEtherdream;
+pub use intensity::Intensity;
 
 pub trait Transformers {
     fn apply(
diff --git a/src/transformer/intensity.rs b/src/transformer/intensity.rs
new file mode 100644
index 0000000..0aacc1c
--- /dev/null
+++ b/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
+	}
+}
+