Package org.h2gis.functions.spatial.earth

Class SunCalc

java.lang.Object
org.h2gis.functions.spatial.earth.SunCalc
public class SunCalc extends Object
This class is a partial Java port of SunCalc. A BSD-licensed JavaScript library for calculating sun position, sunlight phases (times for sunrise, sunset, dusk, etc.), moon position and lunar phase for the given location and time, created by Vladimir Agafonkin (@mourner) as a part of the SunCalc.net project.
Author:
Erwan Bocher

  • Method Summary

    Modifier and Type
    Method
    Description
    static org.locationtech.jts.geom.Coordinate
    getPosition(Date date, double lat, double lng)
    Returns the sun position as a coordinate with the following properties x: sun azimuth in radians (direction along the horizon, measured from south to west), e.g. 0 is south and Math.PI * 3/4 is northwest.
    static boolean
    isGeographic(double latitude, double longitude)
    Test if the point has valid latitude and longitude coordinates.

    Methods inherited from class java.lang.Object

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

  • Method Details

    • getPosition

      public static org.locationtech.jts.geom.Coordinate getPosition(Date date, double lat, double lng)
      Returns the sun position as a coordinate with the following properties x: sun azimuth in radians (direction along the horizon, measured from south to west), e.g. 0 is south and Math.PI * 3/4 is northwest. y: sun altitude above the horizon in radians, e.g. 0 at the horizon and PI/2 at the zenith (straight over your head).
      Parameters:
      date -
      lat -
      lng -
      Returns:

    • isGeographic

      public static boolean isGeographic(double latitude, double longitude)
      Test if the point has valid latitude and longitude coordinates.
      Parameters:
      latitude -
      longitude -
      Returns: