org.apache.commons.math3.geometry.euclidean.oned
public class IntervalsSet extends AbstractRegion<Euclidean1D,Euclidean1D>
Region.Location
Constructor and Description |
---|
IntervalsSet()
Build an intervals set representing the whole real line.
|
IntervalsSet(BSPTree<Euclidean1D> tree)
Build an intervals set from an inside/outside BSP tree.
|
IntervalsSet(Collection<SubHyperplane<Euclidean1D>> boundary)
Build an intervals set from a Boundary REPresentation (B-rep).
|
IntervalsSet(double lower,
double upper)
Build an intervals set corresponding to a single interval.
|
Modifier and Type | Method and Description |
---|---|
List<Interval> |
asList()
Build an ordered list of intervals representing the instance.
|
IntervalsSet |
buildNew(BSPTree<Euclidean1D> tree)
Build a region using the instance as a prototype.
|
private static BSPTree<Euclidean1D> |
buildTree(double lower,
double upper)
Build an inside/outside tree representing a single interval.
|
protected void |
computeGeometricalProperties()
Compute some geometrical properties.
|
double |
getInf()
Get the lowest value belonging to the instance.
|
double |
getSup()
Get the highest value belonging to the instance.
|
private void |
recurseList(BSPTree<Euclidean1D> node,
List<Interval> list,
double lower,
double upper)
Update an intervals list.
|
applyTransform, checkPoint, checkPoint, contains, copySelf, getBarycenter, getBoundarySize, getSize, getTree, intersection, isEmpty, isEmpty, setBarycenter, setSize, side
public IntervalsSet()
public IntervalsSet(double lower, double upper)
lower
- lower bound of the interval, must be lesser or equal
to upper
(may be Double.NEGATIVE_INFINITY
)upper
- upper bound of the interval, must be greater or equal
to lower
(may be Double.POSITIVE_INFINITY
)public IntervalsSet(BSPTree<Euclidean1D> 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 constants
Boolean.TRUE
and Boolean.FALSE
tree
- inside/outside BSP tree representing the intervals setpublic IntervalsSet(Collection<SubHyperplane<Euclidean1D>> boundary)
The boundary is provided as a collection of sub-hyperplanes
. Each sub-hyperplane 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 non-connected 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.
boundary
- collection of boundary elementsprivate static BSPTree<Euclidean1D> buildTree(double lower, double upper)
lower
- lower bound of the interval, must be lesser or equal
to upper
(may be Double.NEGATIVE_INFINITY
)upper
- upper bound of the interval, must be greater or equal
to lower
(may be Double.POSITIVE_INFINITY
)public IntervalsSet buildNew(BSPTree<Euclidean1D> tree)
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 constants
Boolean.TRUE
and Boolean.FALSE
. The
tree also must have either null internal nodes or
internal nodes representing the boundary as specified in the
getTree
method).
buildNew
in interface Region<Euclidean1D>
buildNew
in class AbstractRegion<Euclidean1D,Euclidean1D>
tree
- inside/outside BSP tree representing the new regionprotected void computeGeometricalProperties()
The properties to compute are the barycenter and the size.
computeGeometricalProperties
in class AbstractRegion<Euclidean1D,Euclidean1D>
public double getInf()
Double.NEGATIVE_INFINITY
if the instance doesn't
have any low bound, Double.POSITIVE_INFINITY
if the
instance is empty)public double getSup()
Double.POSITIVE_INFINITY
if the instance doesn't
have any high bound, Double.NEGATIVE_INFINITY
if the
instance is empty)public List<Interval> asList()
This method builds this intervals set as an ordered list of
Interval
elements. If the intervals set has no
lower limit, the first interval will have its low bound equal to
Double.NEGATIVE_INFINITY
. If the intervals set has
no upper limit, the last interval will have its upper bound equal
to Double.POSITIVE_INFINITY
. An empty tree will
build an empty list while a tree representing the whole real line
will build a one element list with both bounds beeing
infinite.
Interval
elementsprivate void recurseList(BSPTree<Euclidean1D> node, List<Interval> list, double lower, double upper)
node
- current nodelist
- list to updatelower
- lower bound of the current convex cellupper
- upper bound of the current convex cellCopyright (c) 2003-2013 Apache Software Foundation