- Perspective Camera Works

- Top Down Camera Works - Started on chase cam but the math is a bit tricky. tags : #story[1273]
2026-05-09 06:18:44 +00:00 · 2017-09-21 14:40:35 +12:00
parent c39582de5c
commit 6ff309a40c
6 changed files with 258 additions and 14 deletions
@@ -0,0 +1,89 @@
+package seng302.visualiser.cameras;
+
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.collections.ObservableList;
+import javafx.geometry.Point3D;
+import javafx.scene.PerspectiveCamera;
+import javafx.scene.transform.Rotate;
+import javafx.scene.transform.Transform;
+import javafx.scene.transform.Translate;
+import seng302.visualiser.fxObjects.assets_3D.BoatObject;
+
+
+public class ChaseCamera extends PerspectiveCamera implements RaceCamera {
+
+    private ObservableList<Transform> transforms;
+    private BoatObject playerBoat;
+
+    public ChaseCamera() {
+        super(true);
+        transforms = this.getTransforms();
+    }
+
+    public void setPlayerBoat(BoatObject playerBoat) {
+        this.playerBoat = playerBoat;
+
+        this.playerBoat.layoutXProperty().addListener(new ChangeListener<Number>() {
+            @Override
+            public void changed(ObservableValue<? extends Number> observable, Number oldValue,
+                Number newValue) {
+                updateCameraX((Double) oldValue, (Double) newValue);
+            }
+        });
+        this.playerBoat.layoutYProperty().addListener(new ChangeListener<Number>() {
+            @Override
+            public void changed(ObservableValue<? extends Number> observable, Number oldValue,
+                Number newValue) {
+                updateCameraY((Double) oldValue, (Double) newValue);
+            }
+        });
+    }
+
+
+    private void updateCameraX(Double oldXValue, Double newXValue) {
+        if (transforms.size() == 0) { // boat is placed and then moved at start,
+            transforms.addAll(
+                new Translate(playerBoat.getLayoutX() - 30, playerBoat.getLayoutY() - 30, -125),
+                new Rotate(80, new Point3D(0, 0, 1))
+            );
+        } else {
+            transforms.addAll(new Translate(newXValue - oldXValue, 0, 0));
+        }
+    }
+
+    private void updateCameraY(Double oldYValue, Double newYValue) {
+        transforms.addAll(new Translate(0, (newYValue - oldYValue), 0));
+    }
+
+    @Override
+    public void zoomIn() {
+        transforms.addAll(new Translate(0, 0, 1.5));
+    }
+
+    @Override
+    public void zoomOut() {
+        transforms.addAll(new Translate(0, 0, -1.5));
+    }
+
+
+    /*
+    These have been left intentionally empty for now. it would be cool to be able to pan around the boat and have the camera move around the boat though.
+    */
+
+    @Override
+    public void panLeft() {
+    }
+
+    @Override
+    public void panRight() {
+    }
+
+    @Override
+    public void panUp() {
+    }
+
+    @Override
+    public void panDown() {
+    }
+}