Finished MarkRoundingSequence class. Added MarkRoundingData class.

RaceState has a MarkRoundingSequenceMember.
The temporary rounding line drawing in canvas uses MarkRoundingSequence.
MockRace now uses MarkRoundingSequence.
#story[1185]

racevisionGame/src/main/java/shared/model/MarkRoundingData.java

@@ -0,0 +1,118 @@
+package shared.model;
+
+
+
+/**
+ * Contains data related to mark rounding for a specific leg.
+ */
+public class MarkRoundingData {
+
+    /**
+     * The leg this relates to.
+     */
+    private Leg leg;
+
+    /**
+     * The mark that should be rounded.
+     */
+    private Mark markToRound;
+
+    /**
+     * The bearing of the leg.
+     */
+    private Bearing legBearing;
+
+    /**
+     * The bearing of the next leg.
+     */
+    private Bearing nextLegBearing;
+
+    /**
+     * The location of the first rounding check point.
+     */
+    private GPSCoordinate roundCheck1;
+
+    /**
+     * The location of the second rounding check point.
+     */
+    private GPSCoordinate roundCheck2;
+
+    /**
+     * A halfway point between mark to round and roundCheck1.
+     */
+    private GPSCoordinate roundCheck1Halfway;
+
+    /**
+     * A halfway point between mark to round and roundCheck2.
+     */
+    private GPSCoordinate roundCheck2Halfway;
+
+
+    public MarkRoundingData() {
+    }
+
+
+    public Leg getLeg() {
+        return leg;
+    }
+
+    public void setLeg(Leg leg) {
+        this.leg = leg;
+    }
+
+    public Mark getMarkToRound() {
+        return markToRound;
+    }
+
+    public void setMarkToRound(Mark markToRound) {
+        this.markToRound = markToRound;
+    }
+
+    public Bearing getLegBearing() {
+        return legBearing;
+    }
+
+    public void setLegBearing(Bearing legBearing) {
+        this.legBearing = legBearing;
+    }
+
+    public Bearing getNextLegBearing() {
+        return nextLegBearing;
+    }
+
+    public void setNextLegBearing(Bearing nextLegBearing) {
+        this.nextLegBearing = nextLegBearing;
+    }
+
+    public GPSCoordinate getRoundCheck1() {
+        return roundCheck1;
+    }
+
+    public void setRoundCheck1(GPSCoordinate roundCheck1) {
+        this.roundCheck1 = roundCheck1;
+    }
+
+    public GPSCoordinate getRoundCheck2() {
+        return roundCheck2;
+    }
+
+    public void setRoundCheck2(GPSCoordinate roundCheck2) {
+        this.roundCheck2 = roundCheck2;
+    }
+
+    public GPSCoordinate getRoundCheck1Halfway() {
+        return roundCheck1Halfway;
+    }
+
+    public void setRoundCheck1Halfway(GPSCoordinate roundCheck1Halfway) {
+        this.roundCheck1Halfway = roundCheck1Halfway;
+    }
+
+    public GPSCoordinate getRoundCheck2Halfway() {
+        return roundCheck2Halfway;
+    }
+
+    public void setRoundCheck2Halfway(GPSCoordinate roundCheck2Halfway) {
+        this.roundCheck2Halfway = roundCheck2Halfway;
+    }
+}

racevisionGame/src/main/java/shared/model/MarkRoundingSequence.java

@@ -1,11 +1,8 @@
 package shared.model;
 
-import org.jetbrains.annotations.Nullable;
+import java.util.*;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
+import static shared.enums.RoundingType.*;
 
 /**
  * This class contains a sequence of points that describe the mark rounding order for a course.
@@ -19,9 +16,9 @@ public class MarkRoundingSequence {
     private List<Leg> legs;
 
     /**
-     * For each leg, a sequence of rounding points.
+     * For each leg, mark rounding information.
      */
-    private Map<Leg, List<GPSCoordinate>> roundingPoints;
+    private Map<Leg, MarkRoundingData> roundingPoints;
 
 
 
@@ -31,6 +28,16 @@ public class MarkRoundingSequence {
     }
 
 
+    /**
+     * Returns the rounding points for a given leg.
+     * @param leg Leg to check.
+     * @return Rounding points for leg.
+     */
+    public MarkRoundingData getRoundingData(Leg leg) {
+        return roundingPoints.get(leg);
+    }
+
+
     /**
      * Generates the rounding points for all legs in the race.
      */
@@ -39,7 +46,11 @@ public class MarkRoundingSequence {
 
         for (int i = 0; i < this.legs.size(); i++) {
             Leg currentLeg = this.legs.get(i);
-            Optional<Leg> nextLeg = Optional.ofNullable(this.legs.get(i + 1));
+
+            Optional<Leg> nextLeg = Optional.empty();
+            if (i < legs.size() - 1) {
+                nextLeg = Optional.of(this.legs.get(i + 1));
+            }
 
             generateRoundingPoint(currentLeg, nextLeg);
         }
@@ -50,14 +61,85 @@ public class MarkRoundingSequence {
     /**
      * Generates the rounding points for a specific leg.
      * @param currentLeg The leg to generate rounding points for.
-     * @param nextLeg The following leg, used to help generate rounding points.
+     * @param nextLeg The following leg, used to help generate rounding points. Final leg of race doesn't have a following leg.
      */
     private void generateRoundingPoint(Leg currentLeg, Optional<Leg> nextLeg) {
 
+        Bearing bearingToAddFirstPoint = calculateBearingToAdd(currentLeg);
+
+        GPSCoordinate startCoord = currentLeg.getStartCompoundMark().getAverageGPSCoordinate();
+        GPSCoordinate endCoord = currentLeg.getEndCompoundMark().getAverageGPSCoordinate();
+        Bearing legBearing = GPSCoordinate.calculateBearing(startCoord, endCoord);
+        Bearing nextBearing = legBearing;
+
+        Mark markToRound = currentLeg.getEndCompoundMark().getMarkForRounding(legBearing);
+
+        GPSCoordinate roundCheck1;
+        if (currentLeg.getEndCompoundMark().getMark2() == null) {
+            //End is a single mark.
+            roundCheck1 = calculateRoundingCheckPoint(
+                    currentLeg,
+                    markToRound,
+                    legBearing,
+                    bearingToAddFirstPoint);
+        } else {
+            //End is a gate.
+            if (markToRound == currentLeg.getEndCompoundMark().getMark1()) {
+                roundCheck1 = currentLeg.getEndCompoundMark().getMark2().getPosition();
+            } else {
+                roundCheck1 = currentLeg.getEndCompoundMark().getMark1().getPosition();
+            }
+        }
+
+        //TODO the halfway points currently haven't been done properly.
+
+        GPSCoordinate roundCheck1Halfway = calculateRoundingCheckPoint(
+                currentLeg,
+                markToRound,
+                legBearing,
+                bearingToAddFirstPoint);
 
 
+        GPSCoordinate roundCheck2 = roundCheck1;
+        GPSCoordinate roundCheck2Halfway = roundCheck1Halfway;
+        if (nextLeg.isPresent()) {
+
+            Bearing bearingToAddSecondPoint = bearingToAddFirstPoint;//calculateBearingToAdd(nextLeg.get());
+
+            GPSCoordinate startCoord2 = nextLeg.get().getStartCompoundMark().getAverageGPSCoordinate();
+            GPSCoordinate endCoord2 = nextLeg.get().getEndCompoundMark().getAverageGPSCoordinate();
+            nextBearing = GPSCoordinate.calculateBearing(startCoord2, endCoord2);
+
+            roundCheck2 = calculateRoundingCheckPoint(
+                    currentLeg,
+                    markToRound,
+                    nextBearing,
+                    bearingToAddSecondPoint);
+
+            roundCheck2Halfway = calculateRoundingCheckPoint(
+                    currentLeg,
+                    markToRound,
+                    nextBearing,
+                    bearingToAddSecondPoint);
+        }
 
 
+        MarkRoundingData roundingData = new MarkRoundingData();
+        roundingData.setLeg(currentLeg);
+
+        roundingData.setLegBearing(legBearing);
+        roundingData.setNextLegBearing(nextBearing);
+
+        roundingData.setMarkToRound(markToRound);
+
+        roundingData.setRoundCheck1(roundCheck1);
+        roundingData.setRoundCheck1Halfway(roundCheck1Halfway);
+
+        roundingData.setRoundCheck2(roundCheck2);
+        roundingData.setRoundCheck2Halfway(roundCheck2Halfway);
+
+
+        this.roundingPoints.put(currentLeg, roundingData);
 
 
         //Rounding points:
@@ -75,4 +157,54 @@ public class MarkRoundingSequence {
         //the second rounding point is the same as the first, except LEGBEARING is the bearing between end of current leg, and start of next leg.
     }
 
+
+
+    /**
+     * Calculates the location of the rounding check point, which together with the mark to round, forms a line that the boat must cross to round the mark.
+     * @param leg Leg of race to check.
+     * @param markToRound Mark at end of leg to round.
+     * @param legBearing The bearing of the nearest leg. For the first rounding point this is the leg's bearing, for the second rounding point it is the next leg's bearing.
+     * @param bearingToAdd The bearing to add to the leg bearing to get a perpendicular bearing.
+     * @return The location of the rounding point, which together with the mark to round forms a line the boat must cross.
+     */
+    private GPSCoordinate calculateRoundingCheckPoint(Leg leg, Mark markToRound, Bearing legBearing, Bearing bearingToAdd) {
+
+
+        double roundingDistanceMeters = leg.getEndCompoundMark().getRoundingDistance();
+
+
+        //We project from rounding mark to get the second point which forms the line the boat must cross.
+        /*
+               c2
+               |
+               |
+               r------c1
+                  b
+         */
+        GPSCoordinate roundCheck = GPSCoordinate.calculateNewPosition(
+                markToRound.getPosition(),
+                roundingDistanceMeters,
+                Azimuth.fromDegrees(legBearing.degrees() + bearingToAdd.degrees())    );
+
+        return roundCheck;
+    }
+
+
+    /**
+     * Calculates the bearing that must be added to a leg's bearing to calculate a perpendicular bearing, used for finding rounding points.
+     * @param leg Leg to check.
+     * @return Bearing to add. Will be either +90 or -90.
+     */
+    private Bearing calculateBearingToAdd(Leg leg) {
+
+        if (leg.getEndCompoundMark().getRoundingType() == Port ||
+                leg.getEndCompoundMark().getRoundingType() == SP) {
+            return Bearing.fromDegrees(90);
+        } else {
+            return Bearing.fromDegrees(-90);
+        }
+
+    }
+
+
 }

racevisionGame/src/main/java/shared/model/RaceState.java

@@ -46,6 +46,12 @@ public abstract class RaceState {
     private ObservableList<Leg> legs;
 
 
+    /**
+     * The sequence of rounding points for each leg/mark.
+     */
+    private MarkRoundingSequence markRoundingSequence;
+
+
 
     /**
      * The clock which tracks the race's start time, current time, and elapsed duration.
@@ -102,10 +108,15 @@ public abstract class RaceState {
      */
     protected void useLegsList(List<Leg> legs) {
         this.legs.setAll(legs);
+
+        //We create this before adding the extra finish leg, as it doesn't contain compound marks.
+        this.markRoundingSequence = new MarkRoundingSequence(getLegs());
+
         //We add a "dummy" leg at the end of the race.
         if (getLegs().size() > 0) {
             getLegs().add(new Leg("Finish", getLegs().size()));
         }
+
     }
 
 
@@ -367,6 +378,11 @@ public abstract class RaceState {
     }
 
 
-
-
+    /**
+     * Returns the rounding sequences for each leg.
+     * @return Rounding sequence for each leg.
+     */
+    public MarkRoundingSequence getMarkRoundingSequence() {
+        return markRoundingSequence;
+    }
 }