Java Code Examples for org.apache.commons.math3.util.FastMath#atan2()
The following examples show how to use
org.apache.commons.math3.util.FastMath#atan2() .
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Example 1
| Source File: Line.java From astor with GNU General Public License v2.0 | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 2
| Source File: Line.java From astor with GNU General Public License v2.0 | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 3
| Source File: HarmonicFitter.java From astor with GNU General Public License v2.0 | 6 votes |
|
/**
* Estimate a first guess of the phase.
*
* @param observations Observations, sorted w.r.t. abscissa.
* @return the guessed phase.
*/
private double guessPhi(WeightedObservedPoint[] observations) {
// initialize the means
double fcMean = 0;
double fsMean = 0;
double currentX = observations[0].getX();
double currentY = observations[0].getY();
for (int i = 1; i < observations.length; ++i) {
// one step forward
final double previousX = currentX;
final double previousY = currentY;
currentX = observations[i].getX();
currentY = observations[i].getY();
final double currentYPrime = (currentY - previousY) / (currentX - previousX);
double omegaX = omega * currentX;
double cosine = FastMath.cos(omegaX);
double sine = FastMath.sin(omegaX);
fcMean += omega * currentY * cosine - currentYPrime * sine;
fsMean += omega * currentY * sine + currentYPrime * cosine;
}
return FastMath.atan2(-fsMean, fcMean);
}
Example 4
| Source File: HarmonicFitter.java From astor with GNU General Public License v2.0 | 6 votes |
|
/**
* Estimate a first guess of the phase.
*
* @param observations Observations, sorted w.r.t. abscissa.
* @return the guessed phase.
*/
private double guessPhi(WeightedObservedPoint[] observations) {
// initialize the means
double fcMean = 0;
double fsMean = 0;
double currentX = observations[0].getX();
double currentY = observations[0].getY();
for (int i = 1; i < observations.length; ++i) {
// one step forward
final double previousX = currentX;
final double previousY = currentY;
currentX = observations[i].getX();
currentY = observations[i].getY();
final double currentYPrime = (currentY - previousY) / (currentX - previousX);
double omegaX = omega * currentX;
double cosine = FastMath.cos(omegaX);
double sine = FastMath.sin(omegaX);
fcMean += omega * currentY * cosine - currentYPrime * sine;
fsMean += omega * currentY * sine + currentYPrime * cosine;
}
return FastMath.atan2(-fsMean, fcMean);
}
Example 5
| Source File: NPEfix_00169_s.java From coming with MIT License | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 6
| Source File: Line.java From astor with GNU General Public License v2.0 | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 7
| Source File: NPEfix_00172_t.java From coming with MIT License | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 8
| Source File: NPEfix_00170_t.java From coming with MIT License | 6 votes |
|
/** Reset the instance as if built from two points.
* <p>The line is oriented from p1 to p2</p>
* @param p1 first point
* @param p2 second point
*/
public void reset(final Vector2D p1, final Vector2D p2) {
final double dx = p2.getX() - p1.getX();
final double dy = p2.getY() - p1.getY();
final double d = FastMath.hypot(dx, dy);
if (d == 0.0) {
angle = 0.0;
cos = 1.0;
sin = 0.0;
originOffset = p1.getY();
} else {
angle = FastMath.PI + FastMath.atan2(-dy, -dx);
cos = FastMath.cos(angle);
sin = FastMath.sin(angle);
originOffset = (p2.getX() * p1.getY() - p1.getX() * p2.getY()) / d;
}
}
Example 9
| Source File: NPEfix_00171_s.java From coming with MIT License | 5 votes |
|
/** {@inheritDoc} */
public Line apply(final Hyperplane<Euclidean2D> hyperplane) {
final Line line = (Line) hyperplane;
final double rOffset = c1X * line.cos + c1Y * line.sin + c11 * line.originOffset;
final double rCos = cXX * line.cos + cXY * line.sin;
final double rSin = cYX * line.cos + cYY * line.sin;
final double inv = 1.0 / FastMath.sqrt(rSin * rSin + rCos * rCos);
return new Line(FastMath.PI + FastMath.atan2(-rSin, -rCos),
inv * rCos, inv * rSin,
inv * rOffset);
}
Example 10
| Source File: NPEfix_00174_s.java From coming with MIT License | 5 votes |
|
/** {@inheritDoc} */
public Line apply(final Hyperplane<Euclidean2D> hyperplane) {
final Line line = (Line) hyperplane;
final double rOffset = c1X * line.cos + c1Y * line.sin + c11 * line.originOffset;
final double rCos = cXX * line.cos + cXY * line.sin;
final double rSin = cYX * line.cos + cYY * line.sin;
final double inv = 1.0 / FastMath.sqrt(rSin * rSin + rCos * rCos);
return new Line(FastMath.PI + FastMath.atan2(-rSin, -rCos),
inv * rCos, inv * rSin,
inv * rOffset);
}
Example 11
| Source File: NPEfix_00171_t.java From coming with MIT License | 5 votes |
|
/** {@inheritDoc} */
public Line apply(final Hyperplane<Euclidean2D> hyperplane) {
final Line line = (Line) hyperplane;
final double rOffset = c1X * line.cos + c1Y * line.sin + c11 * line.originOffset;
final double rCos = cXX * line.cos + cXY * line.sin;
final double rSin = cYX * line.cos + cYY * line.sin;
final double inv = 1.0 / FastMath.sqrt(rSin * rSin + rCos * rCos);
return new Line(FastMath.PI + FastMath.atan2(-rSin, -rCos),
inv * rCos, inv * rSin,
inv * rOffset);
}
Example 12
| Source File: NPEfix_00172_s.java From coming with MIT License | 5 votes |
|
/** {@inheritDoc} */
public Line apply(final Hyperplane<Euclidean2D> hyperplane) {
final Line line = (Line) hyperplane;
final double rOffset = c1X * line.cos + c1Y * line.sin + c11 * line.originOffset;
final double rCos = cXX * line.cos + cXY * line.sin;
final double rSin = cYX * line.cos + cYY * line.sin;
final double inv = 1.0 / FastMath.sqrt(rSin * rSin + rCos * rCos);
return new Line(FastMath.PI + FastMath.atan2(-rSin, -rCos),
inv * rCos, inv * rSin,
inv * rOffset);
}
Example 13
| Source File: Atan2.java From astor with GNU General Public License v2.0 | 4 votes |
|
/** {@inheritDoc} */
public double value(double x, double y) {
return FastMath.atan2(x, y);
}
Example 14
| Source File: Atan2.java From astor with GNU General Public License v2.0 | 4 votes |
|
/** {@inheritDoc} */
public double value(double x, double y) {
return FastMath.atan2(x, y);
}
Example 15
| Source File: JGenProg2017_0026_s.java From coming with MIT License | 2 votes |
|
/**
* Compute the argument of this complex number.
* The argument is the angle phi between the positive real axis and
* the point representing this number in the complex plane.
* The value returned is between -PI (not inclusive)
* and PI (inclusive), with negative values returned for numbers with
* negative imaginary parts.
* <br/>
* If either real or imaginary part (or both) is NaN, NaN is returned.
* Infinite parts are handled as {@code Math.atan2} handles them,
* essentially treating finite parts as zero in the presence of an
* infinite coordinate and returning a multiple of pi/4 depending on
* the signs of the infinite parts.
* See the javadoc for {@code Math.atan2} for full details.
*
* @return the argument of {@code this}.
*/
public double getArgument() {
return FastMath.atan2(getImaginary(), getReal());
}
Example 16
| Source File: Vector3D.java From astor with GNU General Public License v2.0 | 2 votes |
|
/** Get the azimuth of the vector.
* @return azimuth (α) of the vector, between -π and +π
* @see #Vector3D(double, double)
*/
public double getAlpha() {
return FastMath.atan2(y, x);
}
Example 17
| Source File: Complex.java From astor with GNU General Public License v2.0 | 2 votes |
|
/**
* Compute the argument of this complex number.
* The argument is the angle phi between the positive real axis and
* the point representing this number in the complex plane.
* The value returned is between -PI (not inclusive)
* and PI (inclusive), with negative values returned for numbers with
* negative imaginary parts.
* <br/>
* If either real or imaginary part (or both) is NaN, NaN is returned.
* Infinite parts are handled as {@code Math.atan2} handles them,
* essentially treating finite parts as zero in the presence of an
* infinite coordinate and returning a multiple of pi/4 depending on
* the signs of the infinite parts.
* See the javadoc for {@code Math.atan2} for full details.
*
* @return the argument of {@code this}.
*/
public double getArgument() {
return FastMath.atan2(getImaginary(), getReal());
}
Example 18
| Source File: Elixir_0026_t.java From coming with MIT License | 2 votes |
|
/**
* Compute the argument of this complex number.
* The argument is the angle phi between the positive real axis and
* the point representing this number in the complex plane.
* The value returned is between -PI (not inclusive)
* and PI (inclusive), with negative values returned for numbers with
* negative imaginary parts.
* <br/>
* If either real or imaginary part (or both) is NaN, NaN is returned.
* Infinite parts are handled as {@code Math.atan2} handles them,
* essentially treating finite parts as zero in the presence of an
* infinite coordinate and returning a multiple of pi/4 depending on
* the signs of the infinite parts.
* See the javadoc for {@code Math.atan2} for full details.
*
* @return the argument of {@code this}.
*/
public double getArgument() {
return FastMath.atan2(getImaginary(), getReal());
}
Example 19
| Source File: Circle.java From astor with GNU General Public License v2.0 | 2 votes |
|
/** Get the phase angle of a direction.
* <p>
* The direction may not belong to the circle as the
* phase is computed for the meridian plane between the circle
* pole and the direction.
* </p>
* @param direction direction for which phase is requested
* @return phase angle of the direction around the circle
* @see #toSubSpace(Point)
*/
public double getPhase(final Vector3D direction) {
return FastMath.PI + FastMath.atan2(-direction.dotProduct(y), -direction.dotProduct(x));
}
Example 20
| Source File: Complex.java From astor with GNU General Public License v2.0 | 2 votes |
|
/**
* Compute the argument of this complex number.
* The argument is the angle phi between the positive real axis and
* the point representing this number in the complex plane.
* The value returned is between -PI (not inclusive)
* and PI (inclusive), with negative values returned for numbers with
* negative imaginary parts.
* <br/>
* If either real or imaginary part (or both) is NaN, NaN is returned.
* Infinite parts are handled as {@code Math.atan2} handles them,
* essentially treating finite parts as zero in the presence of an
* infinite coordinate and returning a multiple of pi/4 depending on
* the signs of the infinite parts.
* See the javadoc for {@code Math.atan2} for full details.
*
* @return the argument of {@code this}.
*/
public double getArgument() {
return FastMath.atan2(getImaginary(), getReal());
}
