Package org.hipparchus.geometry.spherical.oned

Class Arc

java.lang.Object

org.hipparchus.geometry.spherical.oned.Arc

public class Arc
extends Object

This class represents an arc on a circle.

See Also:

• ArcsSet

Constructor Summary

Constructors

Constructor	Description
Arc(double lower, double upper, double tolerance)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
Region.Location	checkPoint(double point)	Check a point with respect to the arc.
double	getBarycenter()	Get the barycenter of the arc.
double	getInf()	Get the lower angular bound of the arc.
double	getOffset(double point)	Get the distance (arc length) from a point to the edge of the arc.
double	getOffset(S1Point point)	Get the distance (arc length) from a point to the edge of the arc.
double	getSize()	Get the angular size of the arc.
double	getSup()	Get the upper angular bound of the arc.
double	getTolerance()	Get the tolerance below which angles are considered identical.

Methods inherited from class java.lang.Object

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

Constructor Details

Arc

public Arc(double lower,
 double upper,
 double tolerance)
    throws MathIllegalArgumentException

Simple constructor.

If either lower is equals to upper or the interval exceeds $2\pi$, the arc is considered to be the full circle and its initial defining boundaries will be forgotten. lower is not allowed to be greater than upper (an exception is thrown in this case). lower will be canonicalized between 0 and $2\pi$, and upper shifted accordingly, so the getInf() and getSup() may not return the value used at instance construction.

Parameters:

lower - lower angular bound of the arc

upper - upper angular bound of the arc

tolerance - tolerance below which angles are considered identical

Throws:

MathIllegalArgumentException - if lower is greater than upper or tolerance is smaller than Sphere1D.SMALLEST_TOLERANCE

Method Details

getInf

public double getInf()

Get the lower angular bound of the arc.

Returns:

lower angular bound of the arc, always between 0 and $2\pi$

getSup

public double getSup()

Get the upper angular bound of the arc.

Returns:

upper angular bound of the arc, always between getInf() and getInf() $+2\pi$

getSize

public double getSize()

Get the angular size of the arc.

Returns:

angular size of the arc

getBarycenter

public double getBarycenter()

Get the barycenter of the arc.

Returns:

barycenter of the arc

getTolerance

public double getTolerance()

Get the tolerance below which angles are considered identical.

Returns:

tolerance below which angles are considered identical

checkPoint

public Region.Location checkPoint(double point)

Check a point with respect to the arc.

Parameters:

point - point to check

Returns:

a code representing the point status: either Region.Location.INSIDE, Region.Location.OUTSIDE or Region.Location.BOUNDARY

getOffset

public double getOffset(double point)

Get the distance (arc length) from a point to the edge of the arc.

This method does not use getTolerance().

Parameters:

point - to test.

Returns:

offset, negative if the point is inside the arc, positive if it is outside the arc, or zero if point is getInf() or getSup().

getOffset

public double getOffset(S1Point point)

Get the distance (arc length) from a point to the edge of the arc.

This method does not use getTolerance().

Parameters:

point - to test.

Returns:

offset, negative if the point is inside the arc, positive if it is outside the arc, or zero if point is getInf() or getSup().