org.opentrafficsim.core.math

Class Scalar3D

java.lang.Object

org.opentrafficsim.core.math.Scalar3D

public final class Scalar3D
extends Object

Calculate between Polar (spherical) and Cartesian (xyz) coordinates.

Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

$LastChangedDate: 2015-07-24 02:58:59 +0200 (Fri, 24 Jul 2015) $, @version $Revision: 1147 $, by $Author: averbraeck $, initial version Dec 11, 2015

Author:

Alexander Verbraeck, Peter Knoppers

Method Summary

Modifier and Type	Method and Description
static Direction	cartesianToPhi(double x, double y) Get the (polar) phi angle, which is the projected angle in the xy-plane from the x direction.
static double	cartesianToRadius(double x, double y, double z) Get the (polar) radius based on Cartesian coordinates.
static Direction	cartesianToTheta(double x, double y, double z) Get the (polar) theta angle, which is the angle from the z-direction, from Cartesian coordinates.
static double[]	polarToCartesian(double r, double theta, double phi)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

polarToCartesian

public static double[] polarToCartesian(double r,
                                        double theta,
                                        double phi)

Parameters:

r - double; the radius

theta - double; the angle from the z direction

phi - double; the projected angle in the xy-plane from the x direction

Returns:

a double array [x, y, z] with cartesian coordinates

cartesianToRadius

public static double cartesianToRadius(double x,
                                       double y,
                                       double z)

Get the (polar) radius based on Cartesian coordinates.

Parameters:

x - double; the x-coordinate

y - double; the y-coordinate

z - double; the z-coordinate

Returns:

the radius, which is the distance from (0,0,0)

cartesianToTheta

public static Direction cartesianToTheta(double x,
                                         double y,
                                         double z)

Get the (polar) theta angle, which is the angle from the z-direction, from Cartesian coordinates.

Parameters:

x - double; the x-coordinate

y - double; the y-coordinate

z - double; the z-coordinate

Returns:

the radius, which is the distance from (0,0,0)

cartesianToPhi

public static Direction cartesianToPhi(double x,
                                       double y)

Get the (polar) phi angle, which is the projected angle in the xy-plane from the x direction.

Parameters:

x - double; the x-coordinate

y - double; the y-coordinate

Returns:

the projected angle of direction in the xy-plane