CartesianCoordinate::asCartesian() - Code Metrics - Inspection of "Adding tests" - SamsaraLabs/FermatCoordinateSystems - Measure and Improve Code Quality continuously with Scrutinizer

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by Jordan
created 2021-06-27 01:48 UTC
CartesianCoordinate::asCartesian() A

↳ Parent: CartesianCoordinate
Complexity

Conditions	1
Paths	1
Size

Total Lines	3
Code Lines	1
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	2
CRAP Score	1
Importance

Changes	1
Bugs	0	Features	0
Metric	Value
cc	1
eloc	1
c	1
b	0
f	0
nc	1
nop	0
dl	0
loc	3
ccs	2
cts	2
cp	1
crap	1
rs	10
<?php

namespace Samsara\Fermat\Values\Geometry\CoordinateSystems;

use ReflectionException;
use Samsara\Exceptions\SystemError\LogicalError\IncompatibleObjectState;
use Samsara\Exceptions\UsageError\IntegrityConstraint;
use Samsara\Fermat\Numbers;
use Samsara\Fermat\Types\Base\Interfaces\Coordinates\CoordinateInterface;
use Samsara\Fermat\Types\Base\Interfaces\Coordinates\ThreeDCoordinateInterface;
use Samsara\Fermat\Types\Base\Interfaces\Coordinates\TwoDCoordinateInterface;
use Samsara\Fermat\Types\Coordinate;
use Samsara\Fermat\Values\ImmutableDecimal;

class CartesianCoordinate extends Coordinate implements TwoDCoordinateInterface, ThreeDCoordinateInterface
{

    /**
     * CartesianCoordinate constructor.
     *
     * @param $x
     * @param null $y

     * @param null $z

     */
    public function __construct($x, $y = null, $z = null)
    {
        $data = [
            'x' => $x
        ];

        if (!is_null($y)) {

            $data['y'] = $y;
            if (!is_null($z)) {
                $data['z'] = $z;
            }
        } else if (!is_null($z)) {

            $data['y'] = $z;
        }

        parent::__construct($data);

        if (!array_key_exists('y', $this->parameters)) {
            $this->parameters['y'] = 1;
        }

        if (!array_key_exists('z', $this->parameters)) {
            $this->parameters['z'] = 2;
        }
    }

    /**
     * @param $axis
     *
     * @return ImmutableDecimal
     * @throws ReflectionException
     * @throws IntegrityConstraint
     */
    public function getAxis($axis): ImmutableDecimal
    {
        if (is_int($axis)) {
            $axisIndex = $axis;
        } else {
            $axisIndex = $this->parameters[$axis];
        }

        if (!$this->values->hasIndex($axisIndex)) {
            return Numbers::makeZero();
        }

        return $this->getAxisByIndex($axisIndex);
    }

    /**
     * @return ImmutableDecimal
     */
    public function getDistanceFromOrigin(): ImmutableDecimal
    {
        $x = 0;

        if ($this->numberOfDimensions() > 1) {
            $y = 0;
        } else {
            $y = null;
        }

        if ($this->numberOfDimensions() > 2) {
            $z = 0;
        } else {
            $z = null;
        }

        return $this->distanceTo(new CartesianCoordinate($x, $y, $z));
        return $this->distanceTo(new CartesianCoordinate($x, $y, /** @scrutinizer ignore-type */ $z));
    }

    /**
     * @param CoordinateInterface $coordinate
     *
     * @return ImmutableDecimal
     * @throws IntegrityConstraint
     * @throws ReflectionException
     */
    public function distanceTo(CoordinateInterface $coordinate): ImmutableDecimal
    {
        if (!($coordinate instanceof CartesianCoordinate)) {
            $coordinate = $coordinate->asCartesian();
        }

        /** @var ImmutableDecimal $n */
        $n = Numbers::makeZero();

        $firstValues = ($this->numberOfDimensions() >= $coordinate->numberOfDimensions()) ? $this->axesValues() : $coordinate->axesValues();
        $secondValues = ($this->numberOfDimensions() >= $coordinate->numberOfDimensions()) ? $coordinate->axesValues() : $this->axesValues();

        foreach ($firstValues as $index => $value) {
            $n = $n->add($secondValues[$index]->subtract($value)->pow(2));
        }

        $n = $n->sqrt();

        return $n;
    }

    /**
     * @return CartesianCoordinate
     */
    public function asCartesian(): CartesianCoordinate
    {
        return $this;
    }

    /**
     * @return ImmutableDecimal
     * @throws IncompatibleObjectState
     */
    public function getPolarAngle(): ImmutableDecimal
    {
        if ($this->numberOfDimensions() === 2) {
            return $this->asPolar()->getPolarAngle();
        }

        if ($this->numberOfDimensions() === 3) {
            return $this->asSpherical()->getPolarAngle();
        }

        throw new IncompatibleObjectState(
            'Can only get a polar angle for a CartesianCoordinate of 2 or 3 dimensions.',
            'Ensure the CartesianCoordinate has 2 or 3 dimensions.',
            'Cannot get the polar angle for a CartesianCoordinate unless it has exactly 2 or 3 dimensions.'
        );
    }

    /**
     * @return ImmutableDecimal
     * @throws IncompatibleObjectState
     */
    public function getPlanarAngle(): ImmutableDecimal
    {
        if ($this->numberOfDimensions() === 2) {
            return $this->getPolarAngle();
        }

        if ($this->numberOfDimensions() === 3) {
            return $this->asSpherical()->getPlanarAngle();
        }

        throw new IncompatibleObjectState(
            'Can only get a polar angle for a CartesianCoordinate of 2 or 3 dimensions.',
            'Ensure the CartesianCoordinate has 2 or 3 dimensions.',
            'Cannot get the polar angle for a CartesianCoordinate unless it has exactly 2 or 3 dimensions.'
        );
    }

    /**
     * @return SphericalCoordinate
     * @throws IncompatibleObjectState
     */
    public function asSpherical(): SphericalCoordinate
    {
        if ($this->numberOfDimensions() !== 3) {
            throw new IncompatibleObjectState(
                'Can only get SphericalCoordinate for a CartesianCoordinate of 3 dimensions.',
                'Ensure the CartesianCoordinate has 3 dimensions.',
                'Cannot get the SphericalCoordinate for a CartesianCoordinate unless it has exactly 3 dimensions.'
            );
        }

        $rho = $this->getDistanceFromOrigin();
        $theta = $this->getAxis('y')->divide($this->getAxis('x'))->arctan();
        $phi = $this->getAxis('z')->divide($rho)->arccos();

        return new SphericalCoordinate($rho, $theta, $phi);
    }

    /**
     * @return CylindricalCoordinate
     * @throws IncompatibleObjectState
     * @throws IntegrityConstraint
     * @throws ReflectionException
     */
    public function asCylindrical(): CylindricalCoordinate
    {
        if ($this->numberOfDimensions() !== 3) {
            throw new IncompatibleObjectState(
                'Can only get CylindricalCoordinate for a CartesianCoordinate of 3 dimensions.',
                'Ensure the CartesianCoordinate has 3 dimensions.',
                'Cannot get the CylindricalCoordinate for a CartesianCoordinate unless it has exactly 3 dimensions.'
            );
        }

        $z = $this->getAxis('z');
        $r = $this->distanceTo(new CartesianCoordinate(0, 0, $z));
        $theta = $this->getAxis('y')->divide($this->getAxis('x'))->arctan();

        return new CylindricalCoordinate($r, $theta, $z);
    }

    /**
     * @return PolarCoordinate
     * @throws IncompatibleObjectState
     */
    public function asPolar(): PolarCoordinate
    {
        if ($this->numberOfDimensions() !== 2) {
            throw new IncompatibleObjectState(
                'Can only get PolarCoordinate for a CartesianCoordinate of 2 dimensions.',
                'Ensure the CartesianCoordinate has 2 dimensions.',
                'Cannot get the PolarCoordinate for a CartesianCoordinate unless it has exactly 2 dimensions.'
            );
        }

        $rho = $this->getDistanceFromOrigin();

        if ($rho->isEqual(0)) {
            throw new IncompatibleObjectState(
                'Attempted to convert a CartesianCoordinate at the origin into PolarCoordinate',
                'Do not attempt to do this.',
                'The origin has an undefined polar angle in the polar coordinate system.'
            );
        }

        /** @var ImmutableDecimal $theta */
        $theta = $this->getAxis('x')->divide($rho)->arccos();
        if ($this->getAxis('y')->isNegative()) {
            $theta = $theta->multiply(-1);
        }

        return new PolarCoordinate($rho, $theta);
    }
}
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CartesianCoordinate::asCartesian() A

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