added the ability to toggle the race guide line on and off

#story[1087]

racevisionGame/src/main/java/visualiser/model/Annotations.java

@@ -40,6 +40,7 @@ public class Annotations {
     private static String pathCheckAnno = "showBoatPath";
     private static String timeCheckAnno = "showTime";
     private static String estTimeCheckAnno = "showEstTime";
+    private static String guideLineAnno = "showGuideline";
 
     // string values match the fx:id value of radio buttons
     private static String noBtn = "noBtn";
@@ -160,6 +161,16 @@ public class Annotations {
                         raceMap.draw();
                     }
                 });
+
+        //listener to show estimated time for annotation
+        checkBoxes.get(guideLineAnno).selectedProperty()
+                .addListener((ov, old_val, new_val) -> {
+                    if (old_val != new_val) {
+                        raceMap.toggleGuideLine();
+                        storeCurrentAnnotationState(guideLineAnno, new_val);
+                        raceMap.draw();
+                    }
+                });
     }
 
     /**

racevisionGame/src/main/java/visualiser/model/ResizableRaceCanvas.java

@@ -49,6 +49,7 @@ public class ResizableRaceCanvas extends ResizableCanvas {
     private boolean annoPath = true;
     private boolean annoEstTime = true;
     private boolean annoTimeSinceLastMark = true;
+    private boolean annoGuideLine = false;
 
 
 
@@ -116,6 +117,13 @@ public class ResizableRaceCanvas extends ResizableCanvas {
         annoSpeed = !annoSpeed;
     }
 
+    /**
+     * Toggle the guideline annotation
+     */
+    public void toggleGuideLine() {
+        annoGuideLine = !annoGuideLine;
+    }
+
 
 
 
@@ -470,7 +478,9 @@ public class ResizableRaceCanvas extends ResizableCanvas {
         drawBoundary();
 
         //Guiding Line
-        drawRaceLine();
+        if (annoGuideLine){
+            drawRaceLine();
+        }
 
         //Boats.
         drawBoats();