Example usage for java.lang Math asin

Introduction

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

Prototype

public static double asin(double a) 

Source Link

Document

Returns the arc sine of a value; the returned angle is in the range -pi/2 through pi/2.

Usage

From source file:org.apache.sysml.runtime.functionobjects.Builtin.java

public double execute(double in) throws DMLRuntimeException {
    switch (bFunc) {
    case SIN:/* w  w w . j  a  v a  2 s  . co  m*/
        return FASTMATH ? FastMath.sin(in) : Math.sin(in);
    case COS:
        return FASTMATH ? FastMath.cos(in) : Math.cos(in);
    case TAN:
        return FASTMATH ? FastMath.tan(in) : Math.tan(in);
    case ASIN:
        return FASTMATH ? FastMath.asin(in) : Math.asin(in);
    case ACOS:
        return FASTMATH ? FastMath.acos(in) : Math.acos(in);
    case ATAN:
        return Math.atan(in); //faster in Math
    case CEIL:
        return FASTMATH ? FastMath.ceil(in) : Math.ceil(in);
    case FLOOR:
        return FASTMATH ? FastMath.floor(in) : Math.floor(in);
    case LOG:
        return FASTMATH ? FastMath.log(in) : Math.log(in);
    case LOG_NZ:
        return (in == 0) ? 0 : FASTMATH ? FastMath.log(in) : Math.log(in);
    case ABS:
        return Math.abs(in); //no need for FastMath         
    case SIGN:
        return FASTMATH ? FastMath.signum(in) : Math.signum(in);
    case SQRT:
        return Math.sqrt(in); //faster in Math      
    case EXP:
        return FASTMATH ? FastMath.exp(in) : Math.exp(in);
    case ROUND:
        return Math.round(in); //no need for FastMath

    case PLOGP:
        if (in == 0.0)
            return 0.0;
        else if (in < 0)
            return Double.NaN;
        else
            return (in * (FASTMATH ? FastMath.log(in) : Math.log(in)));

    case SPROP:
        //sample proportion: P*(1-P)
        return in * (1 - in);

    case SIGMOID:
        //sigmoid: 1/(1+exp(-x))
        return FASTMATH ? 1 / (1 + FastMath.exp(-in)) : 1 / (1 + Math.exp(-in));

    case SELP:
        //select positive: x*(x>0)
        return (in > 0) ? in : 0;

    default:
        throw new DMLRuntimeException("Builtin.execute(): Unknown operation: " + bFunc);
    }
}

---

From source file:se.llbit.chunky.world.entity.PlayerEntity.java

public void lookAt(Vector3d camera) {
    Vector3d dir = new Vector3d(camera);
    Vector3d face = new Vector3d(position);
    face.add(0, 28 / 16., 0);//  w ww  . j  a  va 2  s .co  m
    dir.sub(face);
    dir.normalize();
    yaw = FastMath.atan2(dir.x, dir.z) + Math.PI - headYaw;
    pitch = Math.asin(dir.y);
}

---

From source file:se.llbit.chunky.renderer.scene.Sky.java

/**
 * Bilinear interpolated panoramic skymap color
 * @param ray//from www. ja  v a2  s  .c  o  m
 */
public void getSkyColorInterpolated(Ray ray) {
    switch (mode) {
    case SKYMAP_PANORAMIC: {
        if (mirrored) {
            double theta = FastMath.atan2(ray.d.z, ray.d.x);
            theta += rotation;
            theta /= Constants.TAU;
            theta = (theta % 1 + 1) % 1;
            double phi = Math.abs(Math.asin(ray.d.y)) / Constants.HALF_PI;
            skymap.getColorInterpolated(theta, phi, ray.color);
        } else {
            double theta = FastMath.atan2(ray.d.z, ray.d.x);
            theta += rotation;
            theta /= Constants.TAU;
            if (theta > 1 || theta < 0) {
                theta = (theta % 1 + 1) % 1;
            }
            double phi = (Math.asin(ray.d.y) + Constants.HALF_PI) / Math.PI;
            skymap.getColorInterpolated(theta, phi, ray.color);
        }
        break;
    }
    case SKYMAP_SPHERICAL: {
        double cos = FastMath.cos(-rotation);
        double sin = FastMath.sin(-rotation);
        double x = cos * ray.d.x + sin * ray.d.z;
        double y = ray.d.y;
        double z = -sin * ray.d.x + cos * ray.d.z;
        double len = Math.sqrt(x * x + y * y);
        double theta = (len < Ray.EPSILON) ? 0 : Math.acos(-z) / (Constants.TAU * len);
        double u = theta * x + .5;
        double v = .5 + theta * y;
        skymap.getColorInterpolated(u, v, ray.color);
        break;
    }
    case SKYBOX: {
        double cos = FastMath.cos(-rotation);
        double sin = FastMath.sin(-rotation);
        double x = cos * ray.d.x + sin * ray.d.z;
        double y = ray.d.y;
        double z = -sin * ray.d.x + cos * ray.d.z;
        double xabs = QuickMath.abs(x);
        double yabs = QuickMath.abs(y);
        double zabs = QuickMath.abs(z);
        if (y > xabs && y > zabs) {
            double alpha = 1 / yabs;
            skybox[SKYBOX_UP].getColorInterpolated((1 + x * alpha) / 2.0, (1 + z * alpha) / 2.0, ray.color);
        } else if (-z > xabs && -z > yabs) {
            double alpha = 1 / zabs;
            skybox[SKYBOX_FRONT].getColorInterpolated((1 + x * alpha) / 2.0, (1 + y * alpha) / 2.0, ray.color);
        } else if (z > xabs && z > yabs) {
            double alpha = 1 / zabs;
            skybox[SKYBOX_BACK].getColorInterpolated((1 - x * alpha) / 2.0, (1 + y * alpha) / 2.0, ray.color);
        } else if (-x > zabs && -x > yabs) {
            double alpha = 1 / xabs;
            skybox[SKYBOX_LEFT].getColorInterpolated((1 - z * alpha) / 2.0, (1 + y * alpha) / 2.0, ray.color);
        } else if (x > zabs && x > yabs) {
            double alpha = 1 / xabs;
            skybox[SKYBOX_RIGHT].getColorInterpolated((1 + z * alpha) / 2.0, (1 + y * alpha) / 2.0, ray.color);
        } else if (-y > xabs && -y > zabs) {
            double alpha = 1 / yabs;
            skybox[SKYBOX_DOWN].getColorInterpolated((1 + x * alpha) / 2.0, (1 - z * alpha) / 2.0, ray.color);
        }
        break;
    }
    default:
        getSkyDiffuseColorInner(ray);
    }
    if (scene.sunEnabled) {
        addSunColor(ray);
    }
    //ray.color.scale(skyLightModifier);
    ray.color.w = 1;
}

---

From source file:com.irsa.OnTheGoActivity.java

private double gps2m(double lat_a, double lng_a, double lat_b, double lng_b) {
    double radLat1 = (lat_a * Math.PI / 180.0);
    double radLat2 = (lat_b * Math.PI / 180.0);
    double a = radLat1 - radLat2;
    double b = (lng_a - lng_b) * Math.PI / 180.0;
    double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2)
            + Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)));
    s = s * EARTH_RADIUS;/*from   w  w  w.  j  a  v a2s.c  o  m*/
    s = Math.round(s * 10000) / 10000;
    return s;

}

---

From source file:com.ibm.bi.dml.runtime.functionobjects.Builtin.java

public double execute(double in) throws DMLRuntimeException {
    switch (bFunc) {
    case SIN://from  w  ww . jav a 2 s  . c  o  m
        return FASTMATH ? FastMath.sin(in) : Math.sin(in);
    case COS:
        return FASTMATH ? FastMath.cos(in) : Math.cos(in);
    case TAN:
        return FASTMATH ? FastMath.tan(in) : Math.tan(in);
    case ASIN:
        return FASTMATH ? FastMath.asin(in) : Math.asin(in);
    case ACOS:
        return FASTMATH ? FastMath.acos(in) : Math.acos(in);
    case ATAN:
        return Math.atan(in); //faster in Math
    case CEIL:
        return FASTMATH ? FastMath.ceil(in) : Math.ceil(in);
    case FLOOR:
        return FASTMATH ? FastMath.floor(in) : Math.floor(in);
    case LOG:
        //if ( in <= 0 )
        //   throw new DMLRuntimeException("Builtin.execute(): logarithm can only be computed for non-negative numbers (input = " + in + ").");
        // for negative numbers, Math.log will return NaN
        return FASTMATH ? FastMath.log(in) : Math.log(in);
    case LOG_NZ:
        return (in == 0) ? 0 : FASTMATH ? FastMath.log(in) : Math.log(in);

    case ABS:
        return Math.abs(in); //no need for FastMath

    case SQRT:
        //if ( in < 0 )
        //   throw new DMLRuntimeException("Builtin.execute(): squareroot can only be computed for non-negative numbers (input = " + in + ").");
        return Math.sqrt(in); //faster in Math

    case PLOGP:
        if (in == 0.0)
            return 0.0;
        else if (in < 0)
            return Double.NaN;
        else
            return (in * (FASTMATH ? FastMath.log(in) : Math.log(in)));

    case EXP:
        return FASTMATH ? FastMath.exp(in) : Math.exp(in);

    case ROUND:
        return Math.round(in); //no need for FastMath

    case SPROP:
        //sample proportion: P*(1-P)
        return in * (1 - in);

    case SIGMOID:
        //sigmoid: 1/(1+exp(-x))
        return FASTMATH ? 1 / (1 + FastMath.exp(-in)) : 1 / (1 + Math.exp(-in));

    case SELP:
        //select positive: x*(x>0)
        return (in > 0) ? in : 0;

    default:
        throw new DMLRuntimeException("Builtin.execute(): Unknown operation: " + bFunc);
    }
}

---

From source file:org.shensley.gtfs.FormatOutput.java

private double calcDistance(double vlat, double vlon, double slat, double slon) {
    double R = 6371000.0; // Earth's radius in metres.
    double dLat = (slat - vlat) * Math.PI / 180;
    double dLon = (slon - vlon) * Math.PI / 180;
    double a = 0.5 - Math.cos(dLat) / 2
            + Math.cos(vlat * Math.PI / 180) * Math.cos(slat * Math.PI / 180) * (1 - Math.cos(dLon)) / 2;

    return R * 2 * Math.asin(Math.sqrt(a));
}

---

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the arc sine of the number.//from   w ww  . j  a  va 2 s  .c  o m
 * 
 * @param a the number
 * @return the arc sine of the number
 * @see Math#asin(double)
 */
public static Number asin(Number a) {
    return Math.asin(a.doubleValue());
}

---

From source file:org.eclipse.smarthome.binding.astro.internal.calc.SunCalc.java

private double getSunDeclination(double lsun) {
    return Math.asin(Math.sin(lsun) * Math.sin(E));
}

---

From source file:org.eclipse.smarthome.binding.astro.internal.calc.SunCalc.java

private double getElevation(double th, double a, double phi, double d) {
    return Math.asin(Math.sin(phi) * Math.sin(d) + Math.cos(phi) * Math.cos(d) * Math.cos(th - a));
}

---

From source file:msi.gaml.operators.Maths.java

@operator(value = "asin", can_be_const = true, category = { IOperatorCategory.ARITHMETIC })
@doc(value = "Returns the value (in the interval [-90,90], in decimal degrees) of the arcsin of the operand (which should be in [-1,1]).", usages = {
        @usage(value = "if the right-hand operand is outside of the [-1,1] interval, returns NaN") }, examples = @example(value = "asin (0)", equals = "0.0"), see = {
                "acos", "atan", "sin" })
public static Double asin(final Double rv) {
    return Math.asin(rv) * toDeg;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• »