add get focusx and focusy

build.gradle

@@ -1,18 +1,18 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
+        classpath 'com.android.tools.build:gradle:3.3.0'
     }
 }
 
 allprojects {
     repositories {
+        google()
+        jcenter()
         mavenCentral()
     }
 }

gradle.properties

@@ -1,5 +1,5 @@
 VERSION_NAME=1.0
-VERSION_CODE=2
+VERSION_CODE=3
 GROUP=com.almeros.android-gesture-detectors
 
 POM_DESCRIPTION=Gesture detector framework for multitouch handling on Android, based on Android's ScaleGestureDetector
@@ -15,7 +15,7 @@ POM_DEVELOPER_NAME=Almeros Thies
 
 ANDROID_MIN_SDK=8
 ANDROID_TARGET_SDK=21
-ANDROID_COMPILE_SDK=21
-ANDROID_BUILD_TOOLS_VERSION=25.0.0
+ANDROID_COMPILE_SDK=28
+ANDROID_BUILD_TOOLS_VERSION=28.0.3
 
 org.gradle.jvmargs=-Xmx1536M

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip

library/src/main/AndroidManifest.xml

@@ -2,16 +2,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.almeros.android.multitouch">
 
-    <uses-configuration android:reqTouchScreen="finger" />
-
-    <uses-feature
-        android:name="android.hardware.touchscreen"
-        android:required="true" />
-    <uses-feature
-        android:name="android.hardware.touchscreen.multitouch"
-        android:required="true" />
-
-
     <application/>
 
 </manifest>

library/src/main/java/com/almeros/android/multitouch/RotateGestureDetector.java

@@ -139,6 +139,7 @@ protected void handleInProgressEvent(int actionCode, MotionEvent event){
 				// a certain limit. This can help filter shaky data as a
 				// finger is lifted.
                 if (mCurrPressure / mPrevPressure > PRESSURE_THRESHOLD) {
+                    determineFocusPoint(event);
                     final boolean updatePrevious = mListener.onRotate(this);
                     if (updatePrevious) {
                         mPrevEvent.recycle();
@@ -155,7 +156,6 @@ protected void resetState() {
         mSloppyGesture = false;
     }
 
-
     /**
      * Return the rotation difference from the previous rotate event to the current
      * event. 

library/src/main/java/com/almeros/android/multitouch/ShoveGestureDetector.java

@@ -143,6 +143,7 @@ protected void handleInProgressEvent(int actionCode, MotionEvent event){
 				// finger is lifted. Also check that shove is meaningful.
                 if (mCurrPressure / mPrevPressure > PRESSURE_THRESHOLD
                 		&& Math.abs(getShovePixelsDelta()) > 0.5f) {
+                    determineFocusPoint(event);
                     final boolean updatePrevious = mListener.onShove(this);
                     if (updatePrevious) {
                         mPrevEvent.recycle();

library/src/main/java/com/almeros/android/multitouch/TwoFingerGestureDetector.java

@@ -2,7 +2,6 @@
 
 import android.content.Context;
 import android.util.DisplayMetrics;
-import android.util.FloatMath;
 import android.view.MotionEvent;
 import android.view.ViewConfiguration;
 
@@ -36,10 +35,12 @@ public abstract class TwoFingerGestureDetector extends BaseGestureDetector {
 	protected float mPrevFingerDiffY;
 	protected float mCurrFingerDiffX;
 	protected float mCurrFingerDiffY;
-
+    protected float mFocusX;
+    protected float mFocusY;
+
     private float mCurrLen;
     private float mPrevLen;
-	
+
     public TwoFingerGestureDetector(Context context) {
     	super(context);
 
@@ -92,7 +93,7 @@ public float getCurrentSpan() {
         if (mCurrLen == -1) {
             final float cvx = mCurrFingerDiffX;
             final float cvy = mCurrFingerDiffY;
-            mCurrLen = FloatMath.sqrt(cvx*cvx + cvy*cvy);
+            mCurrLen = (float) Math.sqrt(cvx*cvx + cvy*cvy);
         }
         return mCurrLen;
     }
@@ -107,11 +108,37 @@ public float getPreviousSpan() {
         if (mPrevLen == -1) {
             final float pvx = mPrevFingerDiffX;
             final float pvy = mPrevFingerDiffY;
-            mPrevLen = FloatMath.sqrt(pvx*pvx + pvy*pvy);
+            mPrevLen = (float) Math.sqrt(pvx*pvx + pvy*pvy);
         }
         return mPrevLen;
     }
-
+
+    /**
+     * Get gesture focus X point.
+     * @return focus X point of gesture.
+     */
+    public float getFocusX() {
+        return mFocusX;
+    }
+
+
+    /**
+     * Get gesture focus Y point.
+     * @return focus Y point of gesture.
+     */
+    public float getFocusY() {
+        return mFocusY;
+    }
+
+    /**
+     * Calculate focus point for gesture.
+     * @param curr current motion event used to calculate focus point.
+     */
+    protected void determineFocusPoint(MotionEvent curr) {
+        mFocusX = (curr.getX(0) + curr.getX(1)) * 0.5f;
+        mFocusY = (curr.getY(0) + curr.getY(1)) * 0.5f;
+    }
+
     /**
      * MotionEvent has no getRawX(int) method; simulate it pending future API approval. 
      * @param event