Example usage for java.lang Math sin

Introduction

In this page you can find the example usage for java.lang Math sin.

Prototype

@HotSpotIntrinsicCandidate
public static double sin(double a)

Source Link

Document

Returns the trigonometric sine of an angle.

Usage

From source file:Main.java

public static int latitudeToPixelY(double latitude, double zoomLevel, int tileSize) {
    double sinLatitude = Math.sin(latitude * (Math.PI / 180));
    int mapSize = getMapSize(zoomLevel, tileSize);
    return (int) Math
            .round((0.5d - Math.log((1d + sinLatitude) / (1d - sinLatitude)) / (4d * Math.PI)) * mapSize);
}

From source file:Main.java

public static float[] rotate2d(float x0, float y0, float th) {
    float cos = (float) Math.cos(th);
    float sin = (float) Math.sin(th);
    float x = x0 * cos - y0 * sin;//x' = x*cos b - y*sin b
    float y = x0 * sin + y0 * cos;//y' = x*sin b + y*cos b
    return new float[] { x, y };
}

From source file:Main.java

public static double GetDistance(double pLatitude1, double pLongitude1, double pLatitude2, double pLongitude2) {
    double vDist = Math.sin(deg2rad(pLatitude1)) * Math.sin(deg2rad(pLatitude2)) + Math.cos(deg2rad(pLatitude1))
            * Math.cos(deg2rad(pLatitude2)) * Math.cos(deg2rad(pLongitude1 - pLongitude2));
    vDist = Math.acos(vDist);/*  ww  w.  ja  va 2 s .  com*/
    vDist = rad2deg(vDist);
    vDist = vDist * 111189.57696;// * 60 * 1.1515 * 1.609344 * 1000;
    return vDist;
}

From source file:Main.java

public static Point getDirectionPoint(double bearing, Point posFrom, int length) {
    int x = (int) (Math.sin(bearing) * length);
    int y = (int) (Math.cos(bearing) * length);
    return new Point(posFrom.x + x, posFrom.y + y);
}

From source file:Main.java

public static double distance(double lat1, double lon1, double lat2, double lon2) {

    Double theta = lon1 - lon2;//from  ww  w  .j  a  va  2  s.  com
    Double dist = (Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)))
            + (Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta)));

    dist = Math.acos(dist);
    dist = rad2deg(dist);
    dist = dist * 60 * 1.1515; // M

    // dist = dist * 1.609344 * 1000; // m
    dist = dist * 1.609344; // km
    // dist = dist * 0.8684; //n

    return dist;
}

From source file:Main.java

public static double[] geoToMercator(double[] g) {
    double d = g[0] * Math.PI / 180, m = g[1] * Math.PI / 180, l = 6378137, k = 0.0818191908426,
            f = k * Math.sin(m);
    double h = Math.tan(Math.PI / 4 + m / 2), j = Math.pow(Math.tan(Math.PI / 4 + Math.asin(f) / 2), k),
            i = h / j;/*from   ww w.j a va2s . c o m*/
    // return new DoublePoint(Math.round(l * d), Math.round(l *
    // Math.log(i)));
    return new double[] { l * d, l * Math.log(i) };
}

From source file:Main.java

/**
 * Same as toX, but converts to Y component, assuming positive Y is down.
 * /*from w ww  .j av a  2s  . c  o m*/
 * @param angle
 * @return
 */
public static double toY(int angle) {
    return Math.sin(Math.toRadians(angle - 90));
}

From source file:Main.java

/**
 * Calculate sin^2(x)./* w  ww . j a v a  2s.com*/
 * 
 * @param x
 *          x
 * @return sin^2(x)
 * @since 1.0
 */
protected static double sinSquared(double x) {
    return Math.sin(x) * Math.sin(x);
}

From source file:Main.java

public static double earth_Rn(double L) {
    return earth_R * (1 - 2 * M_E + 3 * M_E * Math.sin(L));
}

From source file:Main.java

public static double smallestAngularDifferenceDegrees(double firstAngleDeg, double secondAngleDeg) {
    double d = ((firstAngleDeg - secondAngleDeg) * 3.141592653589793d) / 180.0d;
    return (Math.atan2(Math.sin(d), Math.cos(d)) * 180.0d) / 3.141592653589793d;
}