Added ArrowController. This is the controller for arrow.fxml.

Removed arrow control stuff from ResizableRaceCanvas. Added a wind speed label to arrow.fxml. Also created an outer GridPane to lay things out. #story[1093]
2017-08-02 18:24:43 +12:00
parent ed12ff659d
commit 9889a474ee
5 changed files with 228 additions and 73 deletions
@@ -0,0 +1,152 @@
+package visualiser.Controllers;
+
+
+import javafx.application.Platform;
+import javafx.beans.property.Property;
+import javafx.fxml.FXML;
+import javafx.scene.Node;
+import javafx.scene.control.Label;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.Pane;
+import javafx.scene.layout.StackPane;
+import javafx.scene.shape.Circle;
+import shared.model.Bearing;
+import shared.model.Wind;
+import visualiser.model.VisualiserRace;
+
+/**
+ * Controller for the arrow.fxml view.
+ */
+public class ArrowController {
+
+
+    @FXML
+    private Pane compass;
+
+    @FXML
+    private StackPane arrowStackPane;
+
+    @FXML
+    private ImageView arrowImage;
+
+    @FXML
+    private Circle circle;
+
+    @FXML
+    private Label northLabel;
+
+    @FXML
+    private Label windLabel;
+
+    @FXML
+    private Label speedLabel;
+
+
+    /**
+     * This is the property our arrow control binds to.
+     */
+    private Property<Wind> wind;
+
+
+    /**
+     * Constructor.
+     */
+    public ArrowController() {
+    }
+
+
+    /**
+     * Sets which wind property the arrow control should bind to.
+     * @param wind The wind property to bind to.
+     */
+    public void setWindProperty(Property<Wind> wind) {
+        this.wind  = wind;
+
+        wind.addListener((observable, oldValue, newValue) -> {
+            if (newValue != null) {
+                Platform.runLater(() -> updateWind(newValue));
+            }
+        });
+    }
+
+
+    /**
+     * Updates the control to use the new wind value.
+     * This updates the arrow direction (due to bearing), arrow length (due to speed), and label (due to speed).
+     * @param wind The wind value to use.
+     */
+    private void updateWind(Wind wind) {
+        updateWindBearing(wind.getWindDirection());
+        updateWindSpeed(wind.getWindSpeed());
+    }
+
+
+    /**
+     * Updates the control to account for the new wind speed.
+     * This changes the length (height) of the wind arrow, and updates the speed label.
+     * @param speedKnots The new wind speed, in knots.
+     */
+    private void updateWindSpeed(double speedKnots) {
+        updateWindArrowLength(speedKnots);
+        updateWindSpeedLabel(speedKnots);
+    }
+
+    /**
+     * Updates the length of the wind arrow according to the specified wind speed.
+     * @param speedKnots Wind speed, in knots.
+     */
+    private void updateWindArrowLength(double speedKnots) {
+
+        //At 2 knots, the arrow reaches its minimum height, and at 30 knots it reaches its maximum height.
+        double minKnots = 2;
+        double maxKnots = 30;
+        double deltaKnots = maxKnots - minKnots;
+
+        double minHeight = 25;
+        double maxHeight = 75;
+        double deltaHeight = maxHeight - minHeight;
+
+        //Clamp speed.
+        if (speedKnots > maxKnots) {
+            speedKnots = maxKnots;
+        } else if (speedKnots < minKnots) {
+            speedKnots = minKnots;
+        }
+
+        //How far between the knots bounds is the current speed?
+        double currentDeltaKnots = speedKnots - minKnots;
+        double currentKnotsScalar = currentDeltaKnots / deltaKnots;
+
+        //Thus, how far between the pixel height bounds should the arrow height be?
+        double newHeight = minHeight + (currentKnotsScalar * deltaHeight);
+
+        arrowImage.setFitHeight(newHeight);
+    }
+
+    /**
+     * Updates the wind speed label according to the specified wind speed.
+     * @param speedKnots Wind speed, in knots.
+     */
+    private void updateWindSpeedLabel(double speedKnots) {
+        speedLabel.setText(String.format("%.1fkn", speedKnots));
+    }
+
+
+    /**
+     * Updates the control to account for a new wind bearing.
+     * This rotates the arrow according to the bearing.
+     * @param bearing The bearing to use to rotate arrow.
+     */
+    private void updateWindBearing(Bearing bearing) {
+
+        //We need to display wind-from, so add 180 degrees.
+        Bearing fromBearing = Bearing.fromDegrees(bearing.degrees() + 180d);
+        
+        //Rotate the wind arrow.
+        arrowStackPane.setRotate(fromBearing.degrees());
+    }
+
+
+
+
+}