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61 lines
2.5 KiB
Java
61 lines
2.5 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Lord <chrislord.net@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko;
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import java.lang.Math;
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import android.graphics.PointF;
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public final class FloatUtils {
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public static boolean fuzzyEquals(float a, float b) {
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return (Math.abs(a - b) < 1e-6);
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}
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public static boolean fuzzyEquals(PointF a, PointF b) {
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return fuzzyEquals(a.x, b.x) && fuzzyEquals(a.y, b.y);
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}
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/*
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* Returns the value that represents a linear transition between `from` and `to` at time `t`,
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* which is on the scale [0, 1). Thus with t = 0.0f, this returns `from`; with t = 1.0f, this
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* returns `to`; with t = 0.5f, this returns the value halfway from `from` to `to`.
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*/
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public static float interpolate(float from, float to, float t) {
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return from + (to - from) * t;
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}
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}
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