v1.0 Initial commit of project
This commit is contained in:
198
vendor/khanamiryan/qrcode-detector-decoder/lib/Common/GridSampler.php
vendored
Normal file
198
vendor/khanamiryan/qrcode-detector-decoder/lib/Common/GridSampler.php
vendored
Normal file
@@ -0,0 +1,198 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright 2007 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;
|
||||
|
||||
use Zxing\NotFoundException;
|
||||
|
||||
/**
|
||||
* Implementations of this class can, given locations of finder patterns for a QR code in an
|
||||
* image, sample the right points in the image to reconstruct the QR code, accounting for
|
||||
* perspective distortion. It is abstracted since it is relatively expensive and should be allowed
|
||||
* to take advantage of platform-specific optimized implementations, like Sun's Java Advanced
|
||||
* Imaging library, but which may not be available in other environments such as J2ME, and vice
|
||||
* versa.
|
||||
*
|
||||
* The implementation used can be controlled by calling {@link #setGridSampler(GridSampler)}
|
||||
* with an instance of a class which implements this interface.
|
||||
*
|
||||
* @author Sean Owen
|
||||
*/
|
||||
abstract class GridSampler
|
||||
{
|
||||
/**
|
||||
* @var mixed|\Zxing\Common\DefaultGridSampler|null
|
||||
*/
|
||||
private static $gridSampler;
|
||||
|
||||
/**
|
||||
* Sets the implementation of GridSampler used by the library. One global
|
||||
* instance is stored, which may sound problematic. But, the implementation provided
|
||||
* ought to be appropriate for the entire platform, and all uses of this library
|
||||
* in the whole lifetime of the JVM. For instance, an Android activity can swap in
|
||||
* an implementation that takes advantage of native platform libraries.
|
||||
*
|
||||
* @param $newGridSampler The platform-specific object to install.
|
||||
*/
|
||||
public static function setGridSampler($newGridSampler): void
|
||||
{
|
||||
self::$gridSampler = $newGridSampler;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return GridSampler the current implementation of GridSampler
|
||||
*/
|
||||
public static function getInstance()
|
||||
{
|
||||
if (!self::$gridSampler) {
|
||||
self::$gridSampler = new DefaultGridSampler();
|
||||
}
|
||||
|
||||
return self::$gridSampler;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Checks a set of points that have been transformed to sample points on an image against
|
||||
* the image's dimensions to see if the point are even within the image.</p>
|
||||
*
|
||||
* <p>This method will actually "nudge" the endpoints back onto the image if they are found to be
|
||||
* barely (less than 1 pixel) off the image. This accounts for imperfect detection of finder
|
||||
* patterns in an image where the QR Code runs all the way to the image border.</p>
|
||||
*
|
||||
* <p>For efficiency, the method will check points from either end of the line until one is found
|
||||
* to be within the image. Because the set of points are assumed to be linear, this is valid.</p>
|
||||
*
|
||||
* @param image $image into which the points should map
|
||||
* @param actual $points points in x1,y1,...,xn,yn form
|
||||
*
|
||||
* @throws NotFoundException if an endpoint is lies outside the image boundaries
|
||||
*/
|
||||
protected static function checkAndNudgePoints(
|
||||
$image,
|
||||
$points
|
||||
) {
|
||||
$width = $image->getWidth();
|
||||
$height = $image->getHeight();
|
||||
// Check and nudge points from start until we see some that are OK:
|
||||
$nudged = true;
|
||||
for ($offset = 0; $offset < (is_countable($points) ? count($points) : 0) && $nudged; $offset += 2) {
|
||||
$x = (int)$points[$offset];
|
||||
$y = (int)$points[$offset + 1];
|
||||
if ($x < -1 || $x > $width || $y < -1 || $y > $height) {
|
||||
throw NotFoundException::getNotFoundInstance();
|
||||
}
|
||||
$nudged = false;
|
||||
if ($x == -1) {
|
||||
$points[$offset] = 0.0;
|
||||
$nudged = true;
|
||||
} elseif ($x == $width) {
|
||||
$points[$offset] = $width - 1;
|
||||
$nudged = true;
|
||||
}
|
||||
if ($y == -1) {
|
||||
$points[$offset + 1] = 0.0;
|
||||
$nudged = true;
|
||||
} elseif ($y == $height) {
|
||||
$points[$offset + 1] = $height - 1;
|
||||
$nudged = true;
|
||||
}
|
||||
}
|
||||
// Check and nudge points from end:
|
||||
$nudged = true;
|
||||
for ($offset = (is_countable($points) ? count($points) : 0) - 2; $offset >= 0 && $nudged; $offset -= 2) {
|
||||
$x = (int)$points[$offset];
|
||||
$y = (int)$points[$offset + 1];
|
||||
if ($x < -1 || $x > $width || $y < -1 || $y > $height) {
|
||||
throw NotFoundException::getNotFoundInstance();
|
||||
}
|
||||
$nudged = false;
|
||||
if ($x == -1) {
|
||||
$points[$offset] = 0.0;
|
||||
$nudged = true;
|
||||
} elseif ($x == $width) {
|
||||
$points[$offset] = $width - 1;
|
||||
$nudged = true;
|
||||
}
|
||||
if ($y == -1) {
|
||||
$points[$offset + 1] = 0.0;
|
||||
$nudged = true;
|
||||
} elseif ($y == $height) {
|
||||
$points[$offset + 1] = $height - 1;
|
||||
$nudged = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Samples an image for a rectangular matrix of bits of the given dimension. The sampling
|
||||
* transformation is determined by the coordinates of 4 points, in the original and transformed
|
||||
* image space.
|
||||
*
|
||||
* @param image $image to sample
|
||||
* @param width $dimensionX of {@link BitMatrix} to sample from image
|
||||
* @param height $dimensionY of {@link BitMatrix} to sample from image
|
||||
* @param point $p1ToX 1 preimage X
|
||||
* @param point $p1ToY 1 preimage Y
|
||||
* @param point $p2ToX 2 preimage X
|
||||
* @param point $p2ToY 2 preimage Y
|
||||
* @param point $p3ToX 3 preimage X
|
||||
* @param point $p3ToY 3 preimage Y
|
||||
* @param point $p4ToX 4 preimage X
|
||||
* @param point $p4ToY 4 preimage Y
|
||||
* @param point $p1FromX 1 image X
|
||||
* @param point $p1FromY 1 image Y
|
||||
* @param point $p2FromX 2 image X
|
||||
* @param point $p2FromY 2 image Y
|
||||
* @param point $p3FromX 3 image X
|
||||
* @param point $p3FromY 3 image Y
|
||||
* @param point $p4FromX 4 image X
|
||||
* @param point $p4FromY 4 image Y
|
||||
*
|
||||
* @return {@link BitMatrix} representing a grid of points sampled from the image within a region
|
||||
* defined by the "from" parameters
|
||||
* @throws NotFoundException if image can't be sampled, for example, if the transformation defined
|
||||
* by the given points is invalid or results in sampling outside the image boundaries
|
||||
*/
|
||||
abstract public function sampleGrid(
|
||||
$image,
|
||||
$dimensionX,
|
||||
$dimensionY,
|
||||
$p1ToX,
|
||||
$p1ToY,
|
||||
$p2ToX,
|
||||
$p2ToY,
|
||||
$p3ToX,
|
||||
$p3ToY,
|
||||
$p4ToX,
|
||||
$p4ToY,
|
||||
$p1FromX,
|
||||
$p1FromY,
|
||||
$p2FromX,
|
||||
$p2FromY,
|
||||
$p3FromX,
|
||||
$p3FromY,
|
||||
$p4FromX,
|
||||
$p4FromY
|
||||
);
|
||||
|
||||
abstract public function sampleGrid_(
|
||||
$image,
|
||||
$dimensionX,
|
||||
$dimensionY,
|
||||
$transform
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user