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Introduced a CoordinateSystem object
This aggregates the $is3D, $isMeasured and $SRID variables for geometries.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,176 @@ | ||
| <?php | ||
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| namespace Brick\Geo; | ||
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| use Brick\Geo\Exception\GeometryException; | ||
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| /** | ||
| * Represents the dimensionality and spatial reference system of a geometry. | ||
| */ | ||
| class CoordinateSystem | ||
| { | ||
| /** | ||
| * @var boolean | ||
| */ | ||
| private $hasZ; | ||
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| /** | ||
| * @var boolean | ||
| */ | ||
| private $hasM; | ||
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| /** | ||
| * @var integer | ||
| */ | ||
| private $srid; | ||
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| /** | ||
| * @param boolean $hasZ | ||
| * @param boolean $hasM | ||
| * @param integer $srid | ||
| */ | ||
| private function __construct($hasZ, $hasM, $srid) | ||
| { | ||
| $this->hasZ = $hasZ; | ||
| $this->hasM = $hasM; | ||
| $this->srid = $srid; | ||
| } | ||
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| /** | ||
| * @param boolean $hasZ | ||
| * @param boolean $hasM | ||
| * @param integer $srid | ||
| * | ||
| * @return CoordinateSystem | ||
| */ | ||
| public static function create($hasZ, $hasM, $srid = 0) | ||
| { | ||
| return new CoordinateSystem((bool) $hasZ, (bool) $hasM, (int) $srid); | ||
| } | ||
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| /** | ||
| * @param integer $srid | ||
| * | ||
| * @return CoordinateSystem | ||
| */ | ||
| public static function xy($srid = 0) | ||
| { | ||
| return new self(false, false, (int) $srid); | ||
| } | ||
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| /** | ||
| * @param integer $srid | ||
| * | ||
| * @return CoordinateSystem | ||
| */ | ||
| public static function xyz($srid = 0) | ||
| { | ||
| return new self(true, false, (int) $srid); | ||
| } | ||
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| /** | ||
| * @param integer $srid | ||
| * | ||
| * @return CoordinateSystem | ||
| */ | ||
| public static function xym($srid = 0) | ||
| { | ||
| return new self(false, true, (int) $srid); | ||
| } | ||
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| /** | ||
| * @param integer $srid | ||
| * | ||
| * @return CoordinateSystem | ||
| */ | ||
| public static function xyzm($srid = 0) | ||
| { | ||
| return new self(true, true, (int) $srid); | ||
| } | ||
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| /** | ||
| * @return boolean | ||
| */ | ||
| public function hasZ() | ||
| { | ||
| return $this->hasZ; | ||
| } | ||
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| /** | ||
| * @return boolean | ||
| */ | ||
| public function hasM() | ||
| { | ||
| return $this->hasM; | ||
| } | ||
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| /** | ||
| * @return integer | ||
| */ | ||
| public function SRID() | ||
| { | ||
| return $this->srid; | ||
| } | ||
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| /** | ||
| * @return integer | ||
| * | ||
| * @throws GeometryException | ||
| */ | ||
| public function coordinateDimension() | ||
| { | ||
| $coordinateDimension = 2; | ||
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| if ($this->hasZ) { | ||
| $coordinateDimension++; | ||
| } | ||
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| if ($this->hasM) { | ||
| $coordinateDimension++; | ||
| } | ||
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| return $coordinateDimension; | ||
| } | ||
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| /** | ||
| * @return integer | ||
| */ | ||
| public function spatialDimension() | ||
| { | ||
| return $this->hasZ ? 3 : 2; | ||
| } | ||
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| /** | ||
| * Returns the dimensionality name. | ||
| * | ||
| * @return string XY, XYZ, XYM, or XYZM. | ||
| */ | ||
| public function name() | ||
| { | ||
| $name = 'XY'; | ||
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| if ($this->hasZ) { | ||
| $name .= 'Z'; | ||
| } | ||
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| if ($this->hasM) { | ||
| $name .= 'M'; | ||
| } | ||
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| return $name; | ||
| } | ||
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| /** | ||
| * @param Geometry $geometry | ||
| * | ||
| * @return void | ||
| * | ||
| * @throws GeometryException | ||
| */ | ||
| public function check(Geometry $geometry) | ||
| { | ||
| if ($geometry->is3D() !== $this->hasZ || $geometry->isMeasured() !== $this->hasM) { | ||
| throw new GeometryException('Invalid geometry dimension'); | ||
| } | ||
| } | ||
| } |
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