Java tutorial
//package com.java2s; /* * Copyright (c) 2012 Jason Polites * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.graphics.PointF; import android.view.MotionEvent; public class Main { public static void midpoint(MotionEvent event, PointF point) { float x1 = event.getX(0); float y1 = event.getY(0); float x2 = event.getX(1); float y2 = event.getY(1); midpoint(x1, y1, x2, y2, point); } public static void midpoint(float x1, float y1, float x2, float y2, PointF point) { point.x = (x1 + x2) / 2.0f; point.y = (y1 + y2) / 2.0f; } }