Repeated scene rendering eliminated

GUI/src/main/java/cz/fidentis/analyst/distance/DistanceAction.java

@@ -138,10 +138,8 @@ public class DistanceAction extends ControlPanelAction {
                 
                 updateHausdorffDistanceInformation();
                 getSecondaryDrawableFace().setRenderHeatmap(heatmapRender);
-                renderScene();
             } else {
                 weightedFeaturePoints.hide();
-                renderScene();
             }
         });
         topControlPanel.setSelectedComponent(controlPanel); // Focus Hausdorff distance panel

GUI/src/main/java/cz/fidentis/analyst/registration/RegistrationAction.java

@@ -72,7 +72,6 @@ public class RegistrationAction extends ControlPanelAction {
                 calculateFeaturePoints();
                 setHeatmap();
                 getSecondaryDrawableFace().setRenderHeatmap(heatmapRender);
-                renderScene();
             }
         });
         topControlPanel.setSelectedComponent(controlPanel); // Focus registration panel

GUI/src/main/java/cz/fidentis/analyst/toolbar/FaceToFaceToolBar.java

@@ -23,6 +23,11 @@ public class FaceToFaceToolBar extends RenderingToolBar {
         super(canvas);
         addPrimaryFaceButton();
         addSecondaryFaceButton();
+        
+        // (Re)render scene after all change listeners have been called
+        // (the first added litener is called last)
+        controlPanel.addChangeListener(e -> getCanvas().renderScene());
+        
         // Add distance panel to the control panel
         new DistanceAction(getCanvas(), controlPanel);
         // Add registration panel to the control panel