Improves overview split adjacent launch animation

* Translation gets scaled along with the parent,
so the secondary thumbnailView which has a translate on
it gets exaggerated as the parent goes to fullscreen
scale.
* Now we inversely scale translationX/Y properties,
however it seems like the interpolation is still slighly
off at the beginning of the animation (or maybe some other
value, such as pivot, etc)

Bug: 260814999
Test: Manually slowed down animation and observed
Change-Id: I831476b4ffb582fecbd166525ceea33623e66bdd

src/com/android/launcher3/Utilities.java

@@ -768,4 +768,14 @@ public final class Utilities {
     public static float getYVelocity(VelocityTracker velocityTracker, MotionEvent event) {
         return getYVelocity(velocityTracker, event, -1 /* ACTIVE_POINTER_ID */);
     }
+
+    /** Logs the Scale and Translate properties of a matrix. Ignores skew and perspective. */
+    public static void logMatrix(String label, Matrix matrix) {
+        float[] matrixValues = new float[9];
+        matrix.getValues(matrixValues);
+        Log.d(label, String.format("%s: %s\nscale (x,y) = (%f, %f)\ntranslate (x,y) = (%f, %f)",
+                label, matrix, matrixValues[Matrix.MSCALE_X], matrixValues[Matrix.MSCALE_Y],
+                matrixValues[Matrix.MTRANS_X], matrixValues[Matrix.MTRANS_Y]
+        ));
+    }
 }