Merge branch 'akka-streams'

1 files changed, 25 insertions, 0 deletions

diff --git a/mavigator-cockpit/src/main/scala/mavigator/dashboard/ui/instruments/Distribution.scala b/mavigator-cockpit/src/main/scala/mavigator/dashboard/ui/instruments/Distribution.scala
new file mode 100644
index 0000000..aadafe0
--- /dev/null
+++ b/mavigator-cockpit/src/main/scala/mavigator/dashboard/ui/instruments/Distribution.scala
@@ -0,0 +1,25 @@
+package mavigator.dashboard.ui.instruments
+
+import org.scalajs.dom.html
+import rx._
+import mavigator.util.Environment
+
+class Distribution(val value: Rx[(Double, Double, Double, Double)])(implicit env: Environment) extends SvgInstrument[(Double, Double, Double, Double)] {
+  import SvgInstrument._
+  
+  lazy val element = svgObject("distribution")
+  lazy val position = part("position")
+  lazy val moveable = Seq(position)
+
+  private final val Radius = 50 //px
+  
+  protected def update(value: (Double, Double, Double, Double)) = {
+    val sum = value._1 + value._2 + value._3 + value._4
+    val i = (value._1 - value._3) / sum
+    val j = (value._2 - value._4) / sum
+    val x = math.sqrt(2) / 2 * (i - j)
+    val y = math.sqrt(2) / 2 * (-i - j)
+    translate(position, (x * Radius).toInt, (y * Radius).toInt)
+  }
+  
+}