Imagetiler::getSize() - Code Metrics - Inspection of ":octocat:" - chillerlan/php-imagetiler - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 06c932...7812b7 )

by smiley

created 2019-09-10 18:08 UTC

Imagetiler::getSize() A

↳ Parent: Imagetiler

Complexity

Conditions	4
Paths	3

Size

Total Lines	16
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	8
c	1
b	0
f	0
dl	0
loc	16
rs	10
cc	4
nc	3
nop	3

<?php
/**
 * Class Imagetiler
 *
 * @filesource   Imagetiler.php
 * @created      20.06.2018
 * @package      chillerlan\Imagetiler
 * @author       smiley <[email protected]>
 * @copyright    2018 smiley
 * @license      MIT
 */

namespace chillerlan\Imagetiler;

use chillerlan\Settings\SettingsContainerInterface;
use ImageOptimizer\Optimizer;
use Imagick;
use Psr\Log\{LoggerAwareInterface, LoggerAwareTrait, LoggerInterface, NullLogger};

use function ceil, dirname, extension_loaded, function_exists, ini_get, ini_set, is_dir,
	is_file, is_readable, is_writable, mkdir, putenv, round, sprintf, unlink;

class Imagetiler implements LoggerAwareInterface{
	use LoggerAwareTrait;

	/**
	 * @var \chillerlan\Imagetiler\ImagetilerOptions
	 */
	protected $options;

	/**
	 * @var \ImageOptimizer\Optimizer
	 */
	protected $optimizer;

	/**
	 * Imagetiler constructor.
	 *
	 * @param \chillerlan\Settings\SettingsContainerInterface|null $options
	 * @param \ImageOptimizer\Optimizer                            $optimizer
	 * @param \Psr\Log\LoggerInterface|null                        $logger
	 *
	 * @throws \chillerlan\Imagetiler\ImagetilerException
	 */
	public function __construct(SettingsContainerInterface $options = null, Optimizer $optimizer = null, LoggerInterface $logger = null){

		if(!extension_loaded('imagick')){
			throw new ImagetilerException('Imagick extension is not available');
		}

		$this->setOptions($options ?? new ImagetilerOptions);
		$this->setLogger($logger ?? new NullLogger);

		if($optimizer instanceof Optimizer){
			$this->setOptimizer($optimizer);
		}
	}

	/**
	 * @param \chillerlan\Settings\SettingsContainerInterface $options
	 *
	 * @return \chillerlan\Imagetiler\Imagetiler
	 * @throws \chillerlan\Imagetiler\ImagetilerException
	 */
	public function setOptions(SettingsContainerInterface $options):Imagetiler{
		$this->options = $options;
class Alien {}

class Dalek extends Alien {}

class Plot
{
    /** @var  Dalek */
    public $villain;
}

$alien = new Alien();
$plot = new Plot();
if ($alien instanceof Dalek) {
    $plot->villain = $alien;
}

		if(ini_set('memory_limit', $this->options->memory_limit) === false){
			throw new ImagetilerException('could not alter ini settings');
		}

		if(ini_get('memory_limit') !== (string)$this->options->memory_limit){
			throw new ImagetilerException('ini settings differ from options');
		}

		return $this;
	}

	/**
	 * @param \ImageOptimizer\Optimizer $optimizer
	 *
	 * @return \chillerlan\Imagetiler\Imagetiler
	 */
	public function setOptimizer(Optimizer $optimizer):Imagetiler{
		$this->optimizer = $optimizer;

		return $this;
	}

	/**
	 * @param string $image_path
	 * @param string $out_path
	 *
	 * @return \chillerlan\Imagetiler\Imagetiler
	 * @throws \chillerlan\Imagetiler\ImagetilerException
	 */
	public function process(string $image_path, string $out_path):Imagetiler{

		if(!is_file($image_path) || !is_readable($image_path)){
			throw new ImagetilerException('cannot read image '.$image_path);
		}

		if(!is_dir($out_path) || !is_writable($out_path)){

			if(!mkdir($out_path, 0755, true)){
				throw new ImagetilerException('output path is not writable');
			}

		}

		$this->logger->info('processing image: '.$image_path.', out path: '.$out_path);

		// prepare the zoom base images
		$base_images = $this->prepareZoomBaseImages($image_path, $out_path);

		if($this->options->no_temp_baseimages === true){
			return $this;
		}

		// create the tiles
		foreach($base_images as $zoom => $base_image){

			//load image
			if(!is_file($base_image) || !is_readable($base_image)){
				throw new ImagetilerException('cannot read base image '.$base_image.' for zoom '.$zoom);
			}

			$this->createTilesForZoom(new Imagick($base_image), $zoom, $out_path);
		}

		// clean up base images
		if($this->options->clean_up){

			for($zoom = $this->options->zoom_min; $zoom <= $this->options->zoom_max; $zoom++){
				$lvl_file = $out_path.'/'.$zoom.'.'.$this->options->tile_ext;

				if(is_file($lvl_file)){
					if(unlink($lvl_file)){
						$this->logger->info('deleted base image for zoom level '.$zoom.': '.$lvl_file);
					}
				}
			}

		}

		return $this;
	}

	/**
	 * prepare base images for each zoom level
	 *
	 * @param string $image_path
	 * @param string $out_path
	 *
	 * @return array
	 */
	protected function prepareZoomBaseImages(string $image_path, string $out_path):array{
		$base_images = [];

		// create base image file names
		for($zoom = $this->options->zoom_max; $zoom >= $this->options->zoom_min; $zoom--){
			$base_image = $out_path.'/'.$zoom.'.'.$this->options->tile_ext;
			// check if the base image already exists
			if(!$this->options->overwrite_base_image && is_file($base_image)){
				$this->logger->info('base image for zoom level '.$zoom.' already exists: '.$base_image);

				continue;
			}

			$base_images[$zoom] = $base_image;
		}

		if(empty($base_images)){
			return [];
		}

		$im = new Imagick($image_path);
		$im->setColorspace(Imagick::COLORSPACE_SRGB);
		$im->setImageFormat($this->options->tile_format);

		$width  = $im->getimagewidth();
		$height = $im->getImageHeight();

		$this->logger->info('input image loaded: ['.$width.'x'.$height.'] '.$image_path);

		foreach($base_images as $zoom => $base_image){
			[$w, $h] = $this->getSize($width, $height, $zoom);

			// clone the original image and fit it to the current zoom level
			$il = clone $im;

			if($zoom > $this->options->zoom_normalize){
				$this->scale($il, $w, $h, $this->options->fast_resize_upsample, $this->options->resize_filter_upsample, $this->options->resize_blur_upsample);
			}
			elseif($zoom < $this->options->zoom_normalize){
				$this->scale($il, $w, $h, $this->options->fast_resize_downsample, $this->options->resize_filter_downsample, $this->options->resize_blur_downsample);
			}

			$this->options->no_temp_baseimages === false
				? $this->saveImage($il, $base_image, false)
				: $this->createTilesForZoom($il, $zoom, $out_path);

			$this->clearImage($il);

			$this->logger->info('created image for zoom level '.$zoom.' ['.$w.'x'.$h.'] '.$base_image);
		}

		$this->clearImage($im);

		return $base_images;
	}

	/**
	 * @param \Imagick $im
	 * @param int      $w
	 * @param int      $h
	 * @param bool     $fast
	 * @param int      $filter
	 * @param float    $blur
	 *
	 * @return void
	 */
	protected function scale(Imagick $im, int $w, int $h, bool $fast, int $filter, float $blur):void{
		$fast === true
			// scaleImage - works fast, but without any quality configuration
			? $im->scaleImage($w, $h, true)
			// resizeImage - works slower but offers better quality
			: $im->resizeImage($w, $h, $filter, $blur);
	}

	/**
	 * create tiles for each zoom level
	 *
	 * @param \Imagick $im
	 * @param int      $zoom
	 * @param string   $out_path
	 *
	 * @return void
	 */
	protected function createTilesForZoom(Imagick $im, int $zoom, string $out_path):void{
		$im->setColorspace(Imagick::COLORSPACE_SRGB);
		$ts = $this->options->tile_size;
		$h  = $im->getImageHeight();
		$x  = (int)ceil($im->getimagewidth() / $ts);
		$y  = (int)ceil($h / $ts);

		// width
		for($ix = 0; $ix < $x; $ix++){
			$cx = $ix * $ts;

			// create a stripe tile_size * height
			$ci = clone $im;
			$ci->cropImage($ts, $h, $cx, 0);

			// height
			for($iy = 0; $iy < $y; $iy++){
				$tile = $out_path.'/'.sprintf($this->options->store_structure, $zoom, $ix, $iy).'.'.$this->options->tile_ext;

				// check if tile already exists
				if(!$this->options->overwrite_tile_image && is_file($tile)){
					$this->logger->info('tile '.$zoom.'/'.$ix.'/'.$iy.' already exists: '.$tile);

					continue;
				}

				// cut the stripe into pieces of height = tile_size
				$cy = $this->options->tms
					? $h - ($iy + 1) * $ts
					: $iy * $ts;

				$ti = clone $ci;
				$ti->setImagePage(0, 0, 0, 0);
				$ti->cropImage($ts, $ts, 0, $cy);

				// check if the current tile is smaller than the tile size (leftover edges on the input image)
				if($ti->getImageWidth() < $ts || $ti->getimageheight() < $ts){

					$th = $this->options->tms ? $h - $ts : 0;

					$ti->setImageBackgroundColor($this->options->fill_color);
					$ti->extentImage($ts, $ts, 0, $th);
				}

				$this->saveImage($ti, $tile, true);
				$this->clearImage($ti);
			}

			$this->clearImage($ci);
			$this->logger->info('created column '.$ix.', zoom = '.$zoom.', x = '.$cx);
		}

		$this->clearImage($im);
		$this->logger->info('created tiles for zoom level: '.$zoom.', '.$x.' columns, '.$y.' tile(s) per column');
	}

	/**
	 * save image in to destination
	 *
	 * @param Imagick $image
	 * @param string  $dest full path with file name
	 * @param bool    $optimize
	 *
	 * @return void
	 * @throws \chillerlan\Imagetiler\ImagetilerException
	 */
	protected function saveImage(Imagick $image, string $dest, bool $optimize):void{
		$dir = dirname($dest);

		if(!is_dir($dir)){
			if(!mkdir($dir, 0755, true)){
				throw new ImagetilerException('cannot create folder '.$dir);
			}
		}

		if($this->options->tile_format === 'jpeg'){
			$image->setCompression(Imagick::COMPRESSION_JPEG2000);
			$image->setCompressionQuality($this->options->quality_jpeg);
		}

		if(!$image->writeImage($dest)){
			throw new ImagetilerException('cannot save image '.$dest);
		}

		if($this->options->optimize_output && $optimize && $this->optimizer instanceof Optimizer){
			$this->optimizer->optimize($dest);
		}

	}

	/**
	 * free resources, destroy imagick object
	 *
	 * @param \Imagick|null $image
	 *
	 * @return bool
	 */
	protected function clearImage(Imagick $image = null):bool{

		if($image instanceof Imagick){
			$image->clear();

			return $image->destroy();
		}

		return false;
	}

	/**
	 * calculate the image size for the given zoom level
	 *
	 * @param int $width
	 * @param int $height
	 * @param int $zoom
	 *
	 * @return int[]
	 */
	protected function getSize(int $width, int $height, int $zoom):array{
		$zoom_normalize = $this->options->zoom_normalize ?? $this->options->zoom_max;

		if($this->options->zoom_max > $zoom_normalize && $zoom > $zoom_normalize){
			$zd = 2 ** ($zoom - $zoom_normalize);

			return [$zd * $width, $zd * $height];
		}

		if($zoom < $zoom_normalize){
			$zd = 2 ** ($zoom_normalize - $zoom);

			return [(int)round($width / $zd), (int)round($height / $zd)];
		}

		return [$width, $height];
	}

}


1			<?php
2			/**
3			* Class Imagetiler
4			*
5			* @filesource Imagetiler.php
6			* @created 20.06.2018
7			* @package chillerlan\Imagetiler
8			* @author smiley <[email protected]>
9			* @copyright 2018 smiley
10			* @license MIT
11			*/
12
13			namespace chillerlan\Imagetiler;
14
15			use chillerlan\Settings\SettingsContainerInterface;
16			use ImageOptimizer\Optimizer;
17			use Imagick;
18			use Psr\Log\{LoggerAwareInterface, LoggerAwareTrait, LoggerInterface, NullLogger};
19
20			use function ceil, dirname, extension_loaded, function_exists, ini_get, ini_set, is_dir,
21			is_file, is_readable, is_writable, mkdir, putenv, round, sprintf, unlink;
22
23			class Imagetiler implements LoggerAwareInterface{
24			use LoggerAwareTrait;
25
26			/**
27			* @var \chillerlan\Imagetiler\ImagetilerOptions
28			*/
29			protected $options;
30
31			/**
32			* @var \ImageOptimizer\Optimizer
33			*/
34			protected $optimizer;
35
36			/**
37			* Imagetiler constructor.
38			*
39			* @param \chillerlan\Settings\SettingsContainerInterface\|null $options
40			* @param \ImageOptimizer\Optimizer $optimizer
41			* @param \Psr\Log\LoggerInterface\|null $logger
42			*
43			* @throws \chillerlan\Imagetiler\ImagetilerException
44			*/
45			public function __construct(SettingsContainerInterface $options = null, Optimizer $optimizer = null, LoggerInterface $logger = null){
46
47			if(!extension_loaded('imagick')){
48			throw new ImagetilerException('Imagick extension is not available');
49			}
50
51			$this->setOptions($options ?? new ImagetilerOptions);
52			$this->setLogger($logger ?? new NullLogger);
53
54			if($optimizer instanceof Optimizer){
55			$this->setOptimizer($optimizer);
56			}
57			}
58
59			/**
60			* @param \chillerlan\Settings\SettingsContainerInterface $options
61			*
62			* @return \chillerlan\Imagetiler\Imagetiler
63			* @throws \chillerlan\Imagetiler\ImagetilerException
64			*/
65			public function setOptions(SettingsContainerInterface $options):Imagetiler{
66			$this->options = $options;
			0 ignored issues – show Documentation Bug introduced 2019-01-30 13:12 UTC by Report Bug Copy Issue Report `$options` is of type `chillerlan\Settings\SettingsContainerInterface`, but the property `$options` was declared to be of type `chillerlan\Imagetiler\ImagetilerOptions`. Are you sure that you always receive this specific sub-class here, or does it make sense to add an `instanceof` check? Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly. Either this assignment is in error or an instanceof check should be added for that assignment. class Alien {} class Dalek extends Alien {} class Plot { /** @var Dalek */ public $villain; } $alien = new Alien(); $plot = new Plot(); if ($alien instanceof Dalek) { $plot->villain = $alien; } Loading history...
67
68			if(ini_set('memory_limit', $this->options->memory_limit) === false){
69			throw new ImagetilerException('could not alter ini settings');
70			}
71
72			if(ini_get('memory_limit') !== (string)$this->options->memory_limit){
73			throw new ImagetilerException('ini settings differ from options');
74			}
75
76			return $this;
77			}
78
79			/**
80			* @param \ImageOptimizer\Optimizer $optimizer
81			*
82			* @return \chillerlan\Imagetiler\Imagetiler
83			*/
84			public function setOptimizer(Optimizer $optimizer):Imagetiler{
85			$this->optimizer = $optimizer;
86
87			return $this;
88			}
89
90			/**
91			* @param string $image_path
92			* @param string $out_path
93			*
94			* @return \chillerlan\Imagetiler\Imagetiler
95			* @throws \chillerlan\Imagetiler\ImagetilerException
96			*/
97			public function process(string $image_path, string $out_path):Imagetiler{
98
99			if(!is_file($image_path) \|\| !is_readable($image_path)){
100			throw new ImagetilerException('cannot read image '.$image_path);
101			}
102
103			if(!is_dir($out_path) \|\| !is_writable($out_path)){
104
105			if(!mkdir($out_path, 0755, true)){
106			throw new ImagetilerException('output path is not writable');
107			}
108
109			}
110
111			$this->logger->info('processing image: '.$image_path.', out path: '.$out_path);
112
113			// prepare the zoom base images
114			$base_images = $this->prepareZoomBaseImages($image_path, $out_path);
115
116			if($this->options->no_temp_baseimages === true){
117			return $this;
118			}
119
120			// create the tiles
121			foreach($base_images as $zoom => $base_image){
122
123			//load image
124			if(!is_file($base_image) \|\| !is_readable($base_image)){
125			throw new ImagetilerException('cannot read base image '.$base_image.' for zoom '.$zoom);
126			}
127
128			$this->createTilesForZoom(new Imagick($base_image), $zoom, $out_path);
129			}
130
131			// clean up base images
132			if($this->options->clean_up){
133
134			for($zoom = $this->options->zoom_min; $zoom <= $this->options->zoom_max; $zoom++){
135			$lvl_file = $out_path.'/'.$zoom.'.'.$this->options->tile_ext;
136
137			if(is_file($lvl_file)){
138			if(unlink($lvl_file)){
139			$this->logger->info('deleted base image for zoom level '.$zoom.': '.$lvl_file);
140			}
141			}
142			}
143
144			}
145
146			return $this;
147			}
148
149			/**
150			* prepare base images for each zoom level
151			*
152			* @param string $image_path
153			* @param string $out_path
154			*
155			* @return array
156			*/
157			protected function prepareZoomBaseImages(string $image_path, string $out_path):array{
158			$base_images = [];
159
160			// create base image file names
161			for($zoom = $this->options->zoom_max; $zoom >= $this->options->zoom_min; $zoom--){
162			$base_image = $out_path.'/'.$zoom.'.'.$this->options->tile_ext;
163			// check if the base image already exists
164			if(!$this->options->overwrite_base_image && is_file($base_image)){
165			$this->logger->info('base image for zoom level '.$zoom.' already exists: '.$base_image);
166
167			continue;
168			}
169
170			$base_images[$zoom] = $base_image;
171			}
172
173			if(empty($base_images)){
174			return [];
175			}
176
177			$im = new Imagick($image_path);
178			$im->setColorspace(Imagick::COLORSPACE_SRGB);
179			$im->setImageFormat($this->options->tile_format);
180
181			$width = $im->getimagewidth();
182			$height = $im->getImageHeight();
183
184			$this->logger->info('input image loaded: ['.$width.'x'.$height.'] '.$image_path);
185
186			foreach($base_images as $zoom => $base_image){
187			[$w, $h] = $this->getSize($width, $height, $zoom);
188
189			// clone the original image and fit it to the current zoom level
190			$il = clone $im;
191
192			if($zoom > $this->options->zoom_normalize){
193			$this->scale($il, $w, $h, $this->options->fast_resize_upsample, $this->options->resize_filter_upsample, $this->options->resize_blur_upsample);
194			}
195			elseif($zoom < $this->options->zoom_normalize){
196			$this->scale($il, $w, $h, $this->options->fast_resize_downsample, $this->options->resize_filter_downsample, $this->options->resize_blur_downsample);
197			}
198
199			$this->options->no_temp_baseimages === false
200			? $this->saveImage($il, $base_image, false)
201			: $this->createTilesForZoom($il, $zoom, $out_path);
202
203			$this->clearImage($il);
204
205			$this->logger->info('created image for zoom level '.$zoom.' ['.$w.'x'.$h.'] '.$base_image);
206			}
207
208			$this->clearImage($im);
209
210			return $base_images;
211			}
212
213			/**
214			* @param \Imagick $im
215			* @param int $w
216			* @param int $h
217			* @param bool $fast
218			* @param int $filter
219			* @param float $blur
220			*
221			* @return void
222			*/
223			protected function scale(Imagick $im, int $w, int $h, bool $fast, int $filter, float $blur):void{
224			$fast === true
225			// scaleImage - works fast, but without any quality configuration
226			? $im->scaleImage($w, $h, true)
227			// resizeImage - works slower but offers better quality
228			: $im->resizeImage($w, $h, $filter, $blur);
229			}
230
231			/**
232			* create tiles for each zoom level
233			*
234			* @param \Imagick $im
235			* @param int $zoom
236			* @param string $out_path
237			*
238			* @return void
239			*/
240			protected function createTilesForZoom(Imagick $im, int $zoom, string $out_path):void{
241			$im->setColorspace(Imagick::COLORSPACE_SRGB);
242			$ts = $this->options->tile_size;
243			$h = $im->getImageHeight();
244			$x = (int)ceil($im->getimagewidth() / $ts);
245			$y = (int)ceil($h / $ts);
246
247			// width
248			for($ix = 0; $ix < $x; $ix++){
249			$cx = $ix * $ts;
250
251			// create a stripe tile_size * height
252			$ci = clone $im;
253			$ci->cropImage($ts, $h, $cx, 0);
254
255			// height
256			for($iy = 0; $iy < $y; $iy++){
257			$tile = $out_path.'/'.sprintf($this->options->store_structure, $zoom, $ix, $iy).'.'.$this->options->tile_ext;
258
259			// check if tile already exists
260			if(!$this->options->overwrite_tile_image && is_file($tile)){
261			$this->logger->info('tile '.$zoom.'/'.$ix.'/'.$iy.' already exists: '.$tile);
262
263			continue;
264			}
265
266			// cut the stripe into pieces of height = tile_size
267			$cy = $this->options->tms
268			? $h - ($iy + 1) * $ts
269			: $iy * $ts;
270
271			$ti = clone $ci;
272			$ti->setImagePage(0, 0, 0, 0);
273			$ti->cropImage($ts, $ts, 0, $cy);
274
275			// check if the current tile is smaller than the tile size (leftover edges on the input image)
276			if($ti->getImageWidth() < $ts \|\| $ti->getimageheight() < $ts){
277
278			$th = $this->options->tms ? $h - $ts : 0;
279
280			$ti->setImageBackgroundColor($this->options->fill_color);
281			$ti->extentImage($ts, $ts, 0, $th);
282			}
283
284			$this->saveImage($ti, $tile, true);
285			$this->clearImage($ti);
286			}
287
288			$this->clearImage($ci);
289			$this->logger->info('created column '.$ix.', zoom = '.$zoom.', x = '.$cx);
290			}
291
292			$this->clearImage($im);
293			$this->logger->info('created tiles for zoom level: '.$zoom.', '.$x.' columns, '.$y.' tile(s) per column');
294			}
295
296			/**
297			* save image in to destination
298			*
299			* @param Imagick $image
300			* @param string $dest full path with file name
301			* @param bool $optimize
302			*
303			* @return void
304			* @throws \chillerlan\Imagetiler\ImagetilerException
305			*/
306			protected function saveImage(Imagick $image, string $dest, bool $optimize):void{
307			$dir = dirname($dest);
308
309			if(!is_dir($dir)){
310			if(!mkdir($dir, 0755, true)){
311			throw new ImagetilerException('cannot create folder '.$dir);
312			}
313			}
314
315			if($this->options->tile_format === 'jpeg'){
316			$image->setCompression(Imagick::COMPRESSION_JPEG2000);
317			$image->setCompressionQuality($this->options->quality_jpeg);
318			}
319
320			if(!$image->writeImage($dest)){
321			throw new ImagetilerException('cannot save image '.$dest);
322			}
323
324			if($this->options->optimize_output && $optimize && $this->optimizer instanceof Optimizer){
325			$this->optimizer->optimize($dest);
326			}
327
328			}
329
330			/**
331			* free resources, destroy imagick object
332			*
333			* @param \Imagick\|null $image
334			*
335			* @return bool
336			*/
337			protected function clearImage(Imagick $image = null):bool{
338
339			if($image instanceof Imagick){
340			$image->clear();
341
342			return $image->destroy();
343			}
344
345			return false;
346			}
347
348			/**
349			* calculate the image size for the given zoom level
350			*
351			* @param int $width
352			* @param int $height
353			* @param int $zoom
354			*
355			* @return int[]
356			*/
357			protected function getSize(int $width, int $height, int $zoom):array{
358			$zoom_normalize = $this->options->zoom_normalize ?? $this->options->zoom_max;
359
360			if($this->options->zoom_max > $zoom_normalize && $zoom > $zoom_normalize){
361			$zd = 2 ** ($zoom - $zoom_normalize);
362
363			return [$zd * $width, $zd * $height];
364			}
365
366			if($zoom < $zoom_normalize){
367			$zd = 2 ** ($zoom_normalize - $zoom);
368
369			return [(int)round($width / $zd), (int)round($height / $zd)];
370			}
371
372			return [$width, $height];
373			}
374
375			}
376

chillerlan / php-imagetiler

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Imagetiler::getSize() A

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