Animate selection rectangle

src/main/java/games/rednblack/editor/view/stage/Sandbox.java

@@ -314,11 +314,8 @@ public class Sandbox {
         return sceneControl.getCurrentScene();
     }
 
-    public void prepareSelectionRectangle(float x, float y, boolean setOpacity) {
-        // space is panning, so if we are not, then prepare the selection rectangle
-        if (setOpacity) {
-            selectionRec.setOpacity(0.6f);
-        }
+    public void prepareSelectionRectangle(float x, float y) {
+        selectionRec.setOpacity(0.8f);
         selectionRec.setWidth(0);
         selectionRec.setHeight(0);
         selectionRec.setX(x);

src/main/java/games/rednblack/editor/view/stage/tools/SelectionTool.java

@@ -23,6 +23,8 @@ import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Input;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.math.*;
+import com.badlogic.gdx.scenes.scene2d.Action;
+import com.badlogic.gdx.scenes.scene2d.actions.Actions;
 import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.viewport.Viewport;
 import com.kotcrab.vis.ui.util.OsUtils;
@@ -105,18 +107,11 @@ public class SelectionTool extends SimpleTool {
     public boolean stageMouseDown(float x, float y) {
         sandbox = Sandbox.getInstance();
 
-        boolean setOpacity = false;
-
-        //TODO: Anyone can explain what was the purpose of this?
-        if (!Gdx.input.isKeyPressed(Input.Keys.SPACE)) {
-            setOpacity = true;
-        }
-
         // transform stage coordinates to screen coordinates
         Vector2 screenCoords = Sandbox.getInstance().worldToScreen(x, y);
 
         // preparing selection tool rectangle to follow mouse
-        sandbox.prepareSelectionRectangle(screenCoords.x, screenCoords.y, setOpacity);
+        sandbox.prepareSelectionRectangle(screenCoords.x, screenCoords.y);
         return true;
     }
 

src/main/java/games/rednblack/editor/view/ui/widget/actors/basic/PixelRect.java

@@ -19,19 +19,19 @@
 package games.rednblack.editor.view.ui.widget.actors.basic;
 
 import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.math.Interpolation;
 import com.badlogic.gdx.math.Rectangle;
 import com.badlogic.gdx.scenes.scene2d.Group;
+import com.badlogic.gdx.scenes.scene2d.actions.Actions;
 import com.badlogic.gdx.scenes.scene2d.ui.Image;
 import games.rednblack.editor.HyperLap2DFacade;
 import games.rednblack.editor.proxy.EditorTextureManager;
-import games.rednblack.editor.proxy.ProjectManager;
 
 public class PixelRect extends Group {
 
     private final HyperLap2DFacade facade;
-    private final ProjectManager projectManager;
-    private PixelLine[] lines = new PixelLine[4];
-    private Image fill;
+    private final PixelLine[] lines = new PixelLine[4];
+    private final Image fill;
 
     public PixelRect() {
         this(0, 0);
@@ -39,7 +39,6 @@ public class PixelRect extends Group {
 
     public PixelRect(float width, float height) {
         facade = HyperLap2DFacade.getInstance();
-        projectManager = facade.retrieveProxy(ProjectManager.NAME);
         EditorTextureManager tm = facade.retrieveProxy(EditorTextureManager.NAME);
         lines[0] = new PixelLine(tm, 0, 0, width, 0);
         lines[1] = new PixelLine(tm, 0, 0, 0, height);
@@ -95,9 +94,7 @@ public class PixelRect extends Group {
     }
 
     public void setOpacity(float opacity) {
-        Color clr = getColor();
-        clr.a = opacity;
-        setColor(clr);
+        addAction(Actions.alpha(opacity, 0.3f, Interpolation.exp5Out));
     }
 
     public Rectangle getRect() {