Completed
Branch feature/SRTM1ArcSecond (5f684d)
by Hannes
04:35
created

SRTM1ArcSecondProvider::getFilenameFor()   A

Complexity

Conditions 3
Paths 1

Size

Total Lines 12
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 12

Importance

Changes 0
Metric Value
dl 0
loc 12
ccs 0
cts 11
cp 0
rs 9.4285
c 0
b 0
f 0
cc 3
eloc 8
nc 1
nop 2
crap 12
1
<?php
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/*
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 * This file is part of the Runalyze DEM Reader.
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 *
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 * (c) RUNALYZE <[email protected]>
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 *
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 * This source file is subject to the MIT license that is bundled
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 * with this source code in the file LICENSE.
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 */
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namespace Runalyze\DEM\Provider\GeoTIFF;
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use Runalyze\DEM\Exception\InvalidArgumentException;
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class SRTM1ArcSecondProvider extends SRTM4Provider
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{
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    /** @var float */
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    const DEGREES_PER_TILE = 1.0;
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    /** @var string */
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    protected $FilenameFormat = '%s%02d_%s%03d.tif';
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    /**
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     * @param  float                    $latitude
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     * @param  float                    $longitude
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     * @return string
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     * @throws InvalidArgumentException
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     */
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    protected function getFilenameFor($latitude, $longitude)
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    {
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        $this->loadTileReferencesFor($latitude, $longitude);
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        return sprintf(
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            $this->FilenameFormat,
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            $this->CurrentTileVerticalReference < 0 ? 's' : 'n',
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            abs($this->CurrentTileVerticalReference),
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            $this->CurrentTileHorizontalReference < 0 ? 'w' : 'e',
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            abs($this->CurrentTileHorizontalReference)
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        );
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    }
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    /**
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     * @param float $latitude
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     * @param float $longitude
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     */
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    protected function loadTileReferencesFor($latitude, $longitude)
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    {
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        $this->CurrentTileVerticalReference = floor($latitude / static::DEGREES_PER_TILE);
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        $this->CurrentTileHorizontalReference = floor($longitude / static::DEGREES_PER_TILE);
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        $this->CurrentTileLatitude = $this->CurrentTileVerticalReference;
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        $this->CurrentTileLongitude = $this->CurrentTileHorizontalReference;
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    }
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    /**
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     * @param  float   $latitude
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     * @param  float   $longitude
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     * @return float[] array(row, col)
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     */
61 View Code Duplication
    protected function getExactRowAndColFor($latitude, $longitude)
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    {
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        return $this->ResourceReader->getExactRowAndColFor(
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            abs($this->CurrentTileLatitude + 1 - $latitude) / static::DEGREES_PER_TILE,
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            abs($longitude - $this->CurrentTileLongitude) / static::DEGREES_PER_TILE
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        );
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    }
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}
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