Added enabled/disabled button and comments.

software/FlightGui/UIComponents.pde

@@ -328,14 +328,17 @@ class FlyerLayoutControlWindow extends UIWindow {
 /* Window for the slider that modifies script rate generation. */
 class ScriptRateWindow extends UIWindow {
   final static int WIDTH = 200;
-  final static int HEIGHT = 60;
+  final static int HEIGHT = 85;
   final static int BORDER = 4;
   private UISlider rateSlider;
+  private UIButton enableButton;
   
   ScriptRateWindow(UI ui) {
       super(ui, "Script Update Rate (Hz)", BORDER, 100, WIDTH, HEIGHT);
       makeRateSlider();
       rateSlider.setVisible(true);
+      makeEnableButton();
+      enableButton.setVisible(true);
   }
   
   private void makeRateSlider() {
@@ -352,6 +355,18 @@ class ScriptRateWindow extends UIWindow {
     .addToContainer(this);
   }
   
+  private void makeEnableButton() {
+    this.enableButton = new UIButton(25, 55, width-50, 20) {
+      public void onToggle(boolean enabled) {
+        pengine.setGeneratorEnabled(enabled);
+      }
+    };
+    this.enableButton.setInactiveLabel("Disabled");
+    this.enableButton.setActiveLabel("Enabled");
+    this.enableButton.addToContainer(this);
+    this.enableButton.setDescription("Enable/disable script generation.");
+  }
+  
 }
 
 

software/ui/src/engine/FlightEngine.java

@@ -255,6 +255,22 @@ public abstract class FlightEngine implements FlightPlaylist {
     }
   }
 
+  /**
+   * Sets the script generation rate.
+   * @param frequency The frequency, in Hz, to generate scripts.
+   */
+  public void setGeneratorRate(Double frequency) {
+    generator.setRate(frequency);
+  }
+  
+  /**
+   * Turns script generation on or off.
+   * @param enabled True to turn generator on, false to turn off.
+   */
+  public void setGeneratorEnabled(boolean enabled) {
+    generator.setEnabled(enabled);
+  }
+
   // PRIVATE FUNCTIONS
 
   /* Adds patterns to the pattern list passed as parameter.
@@ -324,12 +340,6 @@ public abstract class FlightEngine implements FlightPlaylist {
     }
   }
 
-  /* Called in the Processing code to set the generator
-     frequency through a UI Slider. */
-  public void setGeneratorRate(Double frequency) {
-    generator.setRate(frequency);
-  }
-
 }
 
 

software/ui/src/engine/Generator.java

@@ -50,6 +50,7 @@ public class Generator extends LXOutput implements Geometry {
   Color prev_rleds[][] = new Color[3][76];  /* Previous right led colors as Color objects. */
   Color prev_body[] = new Color[76];        /* Previous body led colors as Color object. */
   boolean force_send;                       /* True forces potentially duplicate commands to be sent. */
+  boolean enabled;                         /* Linked to UI button to turn generator on/off. */
 
   static final String LEFT_WING_POS = "wing_angle(LEFT, %s)";
   static final String RIGHT_WING_POS = "wing_angle(RIGHT, %s)";
@@ -68,6 +69,7 @@ public class Generator extends LXOutput implements Geometry {
     this.tokens = 0;
     this.rate = 1.0;
     this.period = 1000000000;
+    this.enabled = false;
     this.force_send = true;
   }
 
@@ -99,11 +101,6 @@ public class Generator extends LXOutput implements Geometry {
 		wing_angle(LEFT|RIGHT, angle)
    */
 
-  /*
-   * TODO handle the case where only one parameter has changed
-   * Perhaps that should be handled by engine
-   */
-
   private ArrayList<String> generateCommands(int flyerIndex) {
     /*
      * String s = "hello %s!";
@@ -181,10 +178,16 @@ public class Generator extends LXOutput implements Geometry {
     this.period = (long)(1000000000.0 / frequency);
   }
 
+  protected void setEnabled(boolean enabled) {
+    this.force_send = enabled;
+    this.enabled = enabled;
+  }
+
   @Override
   protected void onSend(int[] colors, double brightness) {
-//    super.onSend(colors, brightness);
+    //    super.onSend(colors, brightness);
     
+    if (!enabled) return;
     long waitTime = Duration.between(timer, Instant.now()).toNanos();
     if (waitTime > period) {
       if (tokens < MAX_TOKENS) {