PHP code example of emcconville / point-reduction-algorithms

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

emcconville / point-reduction-algorithms example snippets

use PointReduction\Algorithms\ALGORITHM_NAME;
$obj = new ALGORITHM_NAME($myPoints);
$myReducedPoints = $obj->reduce($tolerance);

use PointReduction\Common\PointInterface;

class MyPoint implements PointInterface
{
    // ... my stuff here ...
    public function getCoordinates() {
        return array($this->myOwnX, $this->myOwnY);
    }
}

use PointReduction\Common\Point,
    PointReduction\Algorithms\RamerDouglasPeucker;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$epsilon = 0.001
$reducer = new RamerDouglasPeucker($givenPoints);
$reducedPoints = $reducer->reduce($epsilon);

use PointReduction\Common\Point,
    PointReduction\Algorithms\VisvalingamWhyatt;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$desiredPointCount = 343;
$reducer = new VisvalingamWhyatt($givenPoints);
$reducedPoints = $reducer->reduce($desiredPointCount);

use PointReduction\Common\Point,
    PointReduction\Algorithms\ReumannWitkam;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$threshold = 0.001;
$reducer = new ReumannWitkam($givenPoints);
$reducedPoints = $reducer->reduce($threshold);

use PointReduction\Common\Point,
    PointReduction\Algorithms\Opheim;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$perpendicularTolerance = 0.005;
$radialTolerance = 0.01;
$reducer = new Opheim($givenPoints);
$reducedPoints = $reducer->reduce($perpendicularTolerance, $radialTolerance);

use PointReduction\Common\Point,
    PointReduction\Algorithms\Lang;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$threshold = 0.001;
$lookAhead = 7;
$reducer = new Lang($givenPoints);
$reducedPoints = $reducer->reduce($threshold, $lookAhead);

use PointReduction\Common\Point,
    PointReduction\Algorithms\ZhaoSAalfeld;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$degree = 7;
$lookAhead = 7;
$reducer = new ZhaoSAalfeld($givenPoints);
$reducedPoints = $reducer->reduce($degree, $lookAhead);

use PointReduction\Common\Point,
    PointReduction\Algorithms\RadialDistance;
$givenPoints = array(
    new Point(-84.158640, -39.822480),
    new Point(-84.159250, -39.820120),
    // ... and so one
);
$tolerance = 0.0025;
$reducer = new RadialDistance($givenPoints);
$reducedPoints = $reducer->reduce($tolerance);