Sails are displayed on first boat in a race. Optimised imports.

- Implemented drawSails method
- Sail position is displayed and updated using a boat's heading
- Sails conform to 'Points of sail'
- Javadoc'd new method and tidied up existing
- Sped up track point frequency (visualiserBoat class)
- Optimised imports (any other classes changed)
- A lot of canvas drawing and sail rotating issues were discovered and eventually overcome along the way. Using a sail image to draw and rotate on the existing canvas rather than a JavaFX shape on a new canvas was the final decision.

#story[1098]

racevisionGame/src/main/java/shared/dataInput/RaceDataSource.java

@@ -1,7 +1,6 @@
 package shared.dataInput;
 
 import network.Messages.Enums.RaceTypeEnum;
-import shared.model.Boat;
 import shared.model.CompoundMark;
 import shared.model.GPSCoordinate;
 import shared.model.Leg;

racevisionGame/src/main/java/shared/dataInput/RaceXMLReader.java

@@ -8,7 +8,10 @@ import org.w3c.dom.NodeList;
 import shared.enums.XMLFileType;
 import shared.exceptions.InvalidRaceDataException;
 import shared.exceptions.XMLReaderException;
-import shared.model.*;
+import shared.model.CompoundMark;
+import shared.model.GPSCoordinate;
+import shared.model.Leg;
+import shared.model.Mark;
 
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;

racevisionGame/src/main/java/shared/dataInput/RegattaXMLReader.java

@@ -2,15 +2,11 @@ package shared.dataInput;
 
 import org.w3c.dom.Element;
 import org.w3c.dom.NodeList;
-import org.xml.sax.SAXException;
-import shared.dataInput.XMLReader;
 import shared.enums.XMLFileType;
 import shared.exceptions.InvalidRegattaDataException;
 import shared.exceptions.XMLReaderException;
 import shared.model.GPSCoordinate;
 
-import javax.xml.parsers.ParserConfigurationException;
-import java.io.IOException;
 import java.io.InputStream;
 
 /**

racevisionGame/src/main/java/shared/dataInput/XMLReader.java

@@ -3,7 +3,6 @@ package shared.dataInput;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 import org.w3c.dom.Node;
-import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
 import shared.enums.XMLFileType;
 import shared.exceptions.XMLReaderException;