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<?php
/*
* Copyright 2012 ZXing authors
*
* 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.
*/
namespace Zxing\Common\Detector;
final class MathUtils
{
private function __construct()
{
}
/**
* Ends up being a bit faster than {@link Math#round(float)}. This merely rounds its
* argument to the nearest int, where x.5 rounds up to x+1. Semantics of this shortcut
* differ slightly from {@link Math#round(float)} in that half rounds down for negative
* values. -2.5 rounds to -3, not -2. For purposes here it makes no difference.
*
* @param float $d real value to round
*
* @return int {@code int}
*/
public static function round(float $d)
{
return (int)($d + ($d < 0.0 ? -0.5 : 0.5));
}
public static function distance(float|int $aX, float|int $aY, float $bX, float $bY): float
{
$xDiff = $aX - $bX;
$yDiff = $aY - $bY;
return (float)sqrt($xDiff * $xDiff + $yDiff * $yDiff);
}
}
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