The Tor Browser / file revision

 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-

  * This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 package org.mozilla.gecko.gfx;

 import org.json.JSONException;

 import org.json.JSONObject;

 import android.graphics.Point;

 import android.graphics.PointF;

 public final class PointUtils {

     public static PointF add(PointF one, PointF two) {

         return new PointF(one.x + two.x, one.y + two.y);

     }

     public static PointF subtract(PointF one, PointF two) {

         return new PointF(one.x - two.x, one.y - two.y);

     }

     public static PointF scale(PointF point, float factor) {

         return new PointF(point.x * factor, point.y * factor);

     }

     public static Point round(PointF point) {

         return new Point(Math.round(point.x), Math.round(point.y));

     }

    /* Computes the magnitude of the given vector. */

    public static float distance(PointF point) {

         return (float)Math.sqrt(point.x * point.x + point.y * point.y);

    }

     /** Computes the scalar distance between two points. */

     public static float distance(PointF one, PointF two) {

         return PointF.length(one.x - two.x, one.y - two.y);

     }

     public static JSONObject toJSON(PointF point) throws JSONException {

         // Ensure we put ints, not longs, because Gecko message handlers call getInt().

         int x = Math.round(point.x);

         int y = Math.round(point.y);

         JSONObject json = new JSONObject();

         json.put("x", x);

         json.put("y", y);

         return json;

     }

 }