modify axis : convenience buttons

src/main/java/fr/ill/ics/n3d/gui/EditorMenuBar.java

@@ -24,6 +24,7 @@ import javafx.collections.ObservableList;
 import javafx.collections.transformation.SortedList;
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
+import javafx.geometry.Bounds;
 import javafx.geometry.HPos;
 import javafx.geometry.Insets;
 import javafx.geometry.Point3D;
@@ -357,6 +358,26 @@ public class EditorMenuBar extends MenuBar {
     			}
 			});
     		
+    		Button reverseButton = new Button("Reverse axis");
+    		reverseButton.setOnAction(reverseEvent -> {
+    			Point3D newDir = new Point3D(
+	    				- Nomad3DEditor.getInstance().getAxisBuilder().getAxis().getDirection().getX(),
+	    				- Nomad3DEditor.getInstance().getAxisBuilder().getAxis().getDirection().getY(),
+	    				- Nomad3DEditor.getInstance().getAxisBuilder().getAxis().getDirection().getZ()
+    				);
+				Nomad3DEditor.getInstance().getAxisBuilder().getAxis().setDirection(newDir.normalize());
+    		});
+    		Button centerButton = new Button("Center axis");
+    		centerButton.setOnAction(centerEvent -> {
+    			Bounds bounds = selectedComponent.getSceneNode().localToScene(selectedComponent.getSceneNode().getBoundsInLocal());
+    			Point3D center = new Point3D(
+    					(bounds.getMinX() + bounds.getMaxX()) / 2,
+    					(bounds.getMinY() + bounds.getMaxY()) / 2,
+    					(bounds.getMinZ() + bounds.getMaxZ()) / 2
+    				);
+    			Nomad3DEditor.getInstance().getAxisBuilder().getAxis().setPosition(center);
+    		});
+    		
     		Button okButton = new Button("OK");
 //    		okButton.setDefaultButton(true);
     		okButton.setOnAction(okEvent -> {
@@ -391,11 +412,19 @@ public class EditorMenuBar extends MenuBar {
             GridPane.setColumnSpan(typeBox, GridPane.REMAINING);
     		addPane.addRow(0, typePane);
     		
+    		GridPane conveniencePane = new GridPane();
+    		conveniencePane.setHgap(10);
+    		conveniencePane.setVgap(5);
+    		conveniencePane.setAlignment(Pos.CENTER);
+    		conveniencePane.addRow(0, reverseButton, centerButton);
+    		addPane.addRow(1, conveniencePane);
+    		GridPane.setMargin(conveniencePane, new Insets(10));
+    		
     		GridPane buttonPane = new GridPane();
     		buttonPane.setHgap(10);
     		buttonPane.setAlignment(Pos.CENTER);
     		buttonPane.addRow(0, okButton, cancelButton);
-    		addPane.addRow(1, buttonPane);
+    		addPane.addRow(2, buttonPane);
 
         	Nomad3DEditor.getInstance().getAxisBuilder().start(selectedAxis, Nomad3DEditor.getInstance().getRoot(), Nomad3DEditor.getInstance().getControls(), modified);
         	updateThread.start();