Wind Arrow direction fixed

- arrow shows wind direction as from instead of to
- removed old unused displayArrow method
- renamed displayFancyArrow to displayWindArrow
- removed coordinates parameter not used

#story[882, 1003]

visualiser/src/main/java/seng302/Model/ResizableRaceCanvas.java

@@ -1,9 +1,8 @@
 package seng302.Model;
 
 
-import javafx.scene.Node;
-import javafx.scene.layout.Pane;
 import javafx.collections.ObservableList;
+import javafx.scene.Node;
 import javafx.scene.paint.Color;
 import javafx.scene.paint.Paint;
 import javafx.scene.transform.Rotate;
@@ -14,8 +13,6 @@ import seng302.RaceMap;
 
 import java.time.Duration;
 import java.time.ZonedDateTime;
-import java.time.temporal.ChronoUnit;
-
 import java.util.*;
 
 /**
@@ -134,24 +131,18 @@ public class ResizableRaceCanvas extends ResizableCanvas {
 
 
     /**
-     * Displays an arrow on the Canvas
+     * Displays an arrow representing wind direction on the Canvas
      *
-     * @param coordinate Coordinate that the arrow is to be displayed at.
      * @param angle      Angle that the arrow is to be facing in degrees 0 degrees = North (Up).
      * @see GraphCoordinate
      */
-    private void displayArrow(GraphCoordinate coordinate, double angle) {
+    private void displayWindArrow(double angle) {
-        gc.save();
-        rotate(angle, coordinate.getX(), coordinate.getY());
-        gc.setFill(Color.BLACK);
-        gc.fillPolygon(new double[]{coordinate.getX() - 12, coordinate.getX() - 6, coordinate.getX(), coordinate.getX() - 4, coordinate.getX() - 4, coordinate.getX() - 8, coordinate.getX() - 8},
-                new double[]{coordinate.getY() - 5, coordinate.getY() - 20, coordinate.getY() - 5, coordinate.getY() - 5, coordinate.getY() + 20, coordinate.getY() + 20, coordinate.getY() - 5},
-                7);
-        gc.restore();
-    }
-
-    private void displayFancyArrow(GraphCoordinate coordinate, double angle) {
         angle = angle % 360;
+
+        // show direction wind is coming from
+        if (angle<180){angle = angle + 180;}
+        else {angle = angle - 180;}
+
         if (arrow != null && arrow.getRotate() != angle) {
             arrow.setRotate(angle);
         }
@@ -260,9 +251,9 @@ public class ResizableRaceCanvas extends ResizableCanvas {
 
         //display wind direction arrow - specify origin point and angle - angle now set to random angle
         if (raceData instanceof StreamedCourse) {
-            displayFancyArrow(new GraphCoordinate((int) getWidth() - 40, 40), ((StreamedCourse) raceData).getWindDirection());
+            displayWindArrow(((StreamedCourse) raceData).getWindDirection());
         } else {
-            displayFancyArrow(new GraphCoordinate((int) getWidth() - 40, 40), 150);
+            displayWindArrow(150);
         }
     }