Using squared hypot to optimize some comparisions

Change-Id: Ia5b99c2e60eedf02dea26857819f0e13127db4e2

1 files changed, 10 insertions, 0 deletions

diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 796fd2505..cc9bda710 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -61,6 +61,7 @@ import android.util.Pair;
 import android.util.TypedValue;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.animation.Interpolator;
 
 import com.android.launcher3.compat.LauncherAppsCompat;
@@ -726,6 +727,15 @@ public final class Utilities {
         return str.toString();
     }
 
+    public static float squaredHypot(float x, float y) {
+        return x * x + y * y;
+    }
+
+    public static float squaredTouchSlop(Context context) {
+        float slop = ViewConfiguration.get(context).getScaledTouchSlop();
+        return slop * slop;
+    }
+
     private static class FixedSizeEmptyDrawable extends ColorDrawable {
 
         private final int mSize;