Class ArcsSet
 java.lang.Object

 org.hipparchus.geometry.partitioning.AbstractRegion<Sphere1D,Sphere1D>

 org.hipparchus.geometry.spherical.oned.ArcsSet

public class ArcsSet extends AbstractRegion<Sphere1D,Sphere1D> implements Iterable<double[]>
This class represents a region of a circle: a set of arcs.Note that due to the wrapping around \(2 \pi\), barycenter is illdefined here. It was defined only in order to fulfill the requirements of the
Region
interface, but its use is discouraged.


Nested Class Summary
Nested Classes Modifier and Type Class Description static class
ArcsSet.InconsistentStateAt2PiWrapping
Specialized exception for inconsistent BSP tree state inconsistency.static class
ArcsSet.Split
Class holding the results of thesplit
method.
Nested classes/interfaces inherited from interface org.hipparchus.geometry.partitioning.Region
Region.Location


Constructor Summary
Constructors Constructor Description ArcsSet(double tolerance)
Build an arcs set representing the whole circle.ArcsSet(double lower, double upper, double tolerance)
Build an arcs set corresponding to a single arc.ArcsSet(Collection<SubHyperplane<Sphere1D>> boundary, double tolerance)
Build an arcs set from a Boundary REPresentation (Brep).ArcsSet(BSPTree<Sphere1D> tree, double tolerance)
Build an arcs set from an inside/outside BSP tree.

Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description List<Arc>
asList()
Build an ordered list of arcs representing the instance.ArcsSet
buildNew(BSPTree<Sphere1D> tree)
Build a region using the instance as a prototype.protected void
computeGeometricalProperties()
Compute some geometrical properties.Iterator<double[]>
iterator()
BoundaryProjection<Sphere1D>
projectToBoundary(Point<Sphere1D> point)
Project a point on the boundary of the region.ArcsSet.Split
split(Arc arc)
Split the instance in two parts by an arc.
Methods inherited from class org.hipparchus.geometry.partitioning.AbstractRegion
applyTransform, checkPoint, checkPoint, checkPoint, checkPoint, contains, copySelf, getBarycenter, getBoundarySize, getSize, getTolerance, getTree, intersection, isEmpty, isEmpty, isFull, isFull, setBarycenter, setBarycenter, setSize

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator




Constructor Detail

ArcsSet
public ArcsSet(double tolerance) throws MathIllegalArgumentException
Build an arcs set representing the whole circle. Parameters:
tolerance
 tolerance below which close subarcs are merged together Throws:
MathIllegalArgumentException
 if tolerance is smaller thanSphere1D.SMALLEST_TOLERANCE

ArcsSet
public ArcsSet(double lower, double upper, double tolerance) throws MathIllegalArgumentException
Build an arcs set corresponding to a single arc.If either
lower
is equals toupper
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 thanupper
(an exception is thrown in this case). Parameters:
lower
 lower bound of the arcupper
 upper bound of the arctolerance
 tolerance below which close subarcs are merged together Throws:
MathIllegalArgumentException
 if lower is greater than upper or tolerance is smaller thanSphere1D.SMALLEST_TOLERANCE

ArcsSet
public ArcsSet(BSPTree<Sphere1D> tree, double tolerance) throws ArcsSet.InconsistentStateAt2PiWrapping, MathIllegalArgumentException
Build an arcs set from an inside/outside BSP tree.The leaf nodes of the BSP tree must have a
Boolean
attribute representing the inside status of the corresponding cell (true for inside cells, false for outside cells). In order to avoid building too many small objects, it is recommended to use the predefined constantsBoolean.TRUE
andBoolean.FALSE
 Parameters:
tree
 inside/outside BSP tree representing the arcs settolerance
 tolerance below which close subarcs are merged together Throws:
ArcsSet.InconsistentStateAt2PiWrapping
 if the tree leaf nodes are not consistent across the \( 0, 2 \pi \) crossingMathIllegalArgumentException
 if tolerance is smaller thanSphere1D.SMALLEST_TOLERANCE

ArcsSet
public ArcsSet(Collection<SubHyperplane<Sphere1D>> boundary, double tolerance) throws ArcsSet.InconsistentStateAt2PiWrapping, MathIllegalArgumentException
Build an arcs set from a Boundary REPresentation (Brep).The boundary is provided as a collection of
subhyperplanes
. Each subhyperplane has the interior part of the region on its minus side and the exterior on its plus side.The boundary elements can be in any order, and can form several nonconnected sets (like for example polygons with holes or a set of disjoints polyhedrons considered as a whole). In fact, the elements do not even need to be connected together (their topological connections are not used here). However, if the boundary does not really separate an inside open from an outside open (open having here its topological meaning), then subsequent calls to the
checkPoint
method will not be meaningful anymore.If the boundary is empty, the region will represent the whole space.
 Parameters:
boundary
 collection of boundary elementstolerance
 tolerance below which close subarcs are merged together Throws:
ArcsSet.InconsistentStateAt2PiWrapping
 if the tree leaf nodes are not consistent across the \( 0, 2 \pi \) crossingMathIllegalArgumentException
 if tolerance is smaller thanSphere1D.SMALLEST_TOLERANCE


Method Detail

buildNew
public ArcsSet buildNew(BSPTree<Sphere1D> tree)
Build a region using the instance as a prototype.This method allow to create new instances without knowing exactly the type of the region. It is an application of the prototype design pattern.
The leaf nodes of the BSP tree must have a
Boolean
attribute representing the inside status of the corresponding cell (true for inside cells, false for outside cells). In order to avoid building too many small objects, it is recommended to use the predefined constantsBoolean.TRUE
andBoolean.FALSE
. The tree also must have either null internal nodes or internal nodes representing the boundary as specified in thegetTree
method).

computeGeometricalProperties
protected void computeGeometricalProperties()
Compute some geometrical properties.The properties to compute are the barycenter and the size.
 Specified by:
computeGeometricalProperties
in classAbstractRegion<Sphere1D,Sphere1D>

projectToBoundary
public BoundaryProjection<Sphere1D> projectToBoundary(Point<Sphere1D> point)
Project a point on the boundary of the region. Specified by:
projectToBoundary
in interfaceRegion<Sphere1D>
 Overrides:
projectToBoundary
in classAbstractRegion<Sphere1D,Sphere1D>
 Parameters:
point
 point to check Returns:
 projection of the point on the boundary

asList
public List<Arc> asList()
Build an ordered list of arcs representing the instance.This method builds this arcs set as an ordered list of
Arc
elements. An empty tree will build an empty list while a tree representing the whole circle will build a one element list with bounds set to \( 0 and 2 \pi \). Returns:
 a new ordered list containing
Arc
elements

iterator
public Iterator<double[]> iterator()
The iterator returns the limit angles pairs of subarcs in trigonometric order.
The iterator does not support the optional
remove
operation.

split
public ArcsSet.Split split(Arc arc)
Split the instance in two parts by an arc. Parameters:
arc
 splitting arc Returns:
 an object containing both the part of the instance on the plus side of the arc and the part of the instance on the minus side of the arc

