## Uses of Class
org.apache.commons.math3.geometry.euclidean.twod.Vector2D

- Packages that use Vector2D
  Package | Description
  --- | ---
  org.apache.commons.math3.geometry.euclidean.threed | This package provides basic 3D geometry components.
  org.apache.commons.math3.geometry.euclidean.twod | This package provides basic 2D geometry components.
  org.apache.commons.math3.geometry.euclidean.twod.hull | This package provides algorithms to generate the convex hull for a set of points in an two-dimensional euclidean space.
  org.apache.commons.math3.geometry.spherical.oned | This package provides basic geometry components on the 1-sphere.

- - ### Uses of Vector2D in org.apache.commons.math3.geometry.euclidean.threed

    Methods in org.apache.commons.math3.geometry.euclidean.threed that return Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Vector2D[][]` | OutlineExtractor.`getOutline(PolyhedronsSet polyhedronsSet)` Extract the outline of a polyhedrons set.
    `Vector2D` | Plane.`toSubSpace(Point<Euclidean3D> point)` Transform a 3D space point into an in-plane point.
    `Vector2D` | Plane.`toSubSpace(Vector<Euclidean3D> vector)` Transform a space point into a sub-space point.

    Methods in org.apache.commons.math3.geometry.euclidean.threed with parameters of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Vector3D` | Plane.`getPointAt(Vector2D inPlane, double offset)` Get one point from the 3D-space.

  - ### Uses of Vector2D in org.apache.commons.math3.geometry.euclidean.twod

    Fields in org.apache.commons.math3.geometry.euclidean.twod declared as Vector2D
    Modifier and Type | Field and Description
    --- | ---
    `static Vector2D` | Vector2D.`NaN` A vector with all coordinates set to NaN.
    `static Vector2D` | Vector2D.`NEGATIVE_INFINITY` A vector with all coordinates set to negative infinity.
    `static Vector2D` | Vector2D.`POSITIVE_INFINITY` A vector with all coordinates set to positive infinity.
    `static Vector2D` | Vector2D.`ZERO` Origin (coordinates: 0, 0).

    Methods in org.apache.commons.math3.geometry.euclidean.twod that return Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Vector2D` | Vector2D.`add(double factor, Vector<Euclidean2D> v)` Add a scaled vector to the instance.
    `Vector2D` | Vector2D.`add(Vector<Euclidean2D> v)` Add a vector to the instance.
    `Vector2D` | Segment.`getEnd()` Get the end point of the segment.
    `Vector2D` | Line.`getPointAt(Vector1D abscissa, double offset)` Get one point from the plane.
    `Vector2D` | Segment.`getStart()` Get the start point of the segment.
    `Vector2D[][]` | PolygonsSet.`getVertices()` Get the vertices of the polygon.
    `Vector2D` | Vector2D.`getZero()` Get the null vector of the vectorial space or origin point of the affine space.
    `Vector2D` | Line.`intersection(Line other)` Get the intersection point of the instance and another line.
    `Vector2D` | SubLine.`intersection(SubLine subLine, boolean includeEndPoints)` Get the intersection of the instance and another sub-line.
    `Vector2D` | Vector2D.`negate()` Get the opposite of the instance.
    `Vector2D` | Vector2D.`normalize()` Get a normalized vector aligned with the instance.
    `Vector2D` | Vector2DFormat.`parse(String source)` Parses a string to produce a `Vector` object.
    `Vector2D` | Vector2DFormat.`parse(String source, ParsePosition pos)` Parses a string to produce a `Vector` object.
    `Vector2D` | Vector2D.`scalarMultiply(double a)` Multiply the instance by a scalar.
    `Vector2D` | Vector2D.`subtract(double factor, Vector<Euclidean2D> v)` Subtract a scaled vector from the instance.
    `Vector2D` | Vector2D.`subtract(Vector<Euclidean2D> p)` Subtract a vector from the instance.
    `Vector2D` | Line.`toSpace(Point<Euclidean1D> point)` Transform a sub-space point into a space point.
    `Vector2D` | Line.`toSpace(Vector<Euclidean1D> vector)` Transform a sub-space point into a space point.

    Methods in org.apache.commons.math3.geometry.euclidean.twod that return types with arguments of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `EnclosingBall<Euclidean2D,Vector2D>` | DiskGenerator.`ballOnSupport(List<Vector2D> support)` Create a ball whose boundary lies on prescribed support points.

    Methods in org.apache.commons.math3.geometry.euclidean.twod with parameters of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `static double` | Vector2D.`angle(Vector2D v1, Vector2D v2)` Compute the angular separation between two vectors.
    `boolean` | Line.`contains(Vector2D p)` Check if the line contains a point.
    `double` | Vector2D.`crossProduct(Vector2D p1, Vector2D p2)` Compute the cross-product of the instance and the given points.
    `double` | Segment.`distance(Vector2D p)` Calculates the shortest distance from a point to this line segment.
    `double` | Line.`distance(Vector2D p)` Compute the distance between the instance and a point.
    `static double` | Vector2D.`distance(Vector2D p1, Vector2D p2)` Compute the distance between two vectors according to the L2 norm.
    `static double` | Vector2D.`distanceInf(Vector2D p1, Vector2D p2)` Compute the distance between two vectors according to the L∞ norm.
    `static double` | Vector2D.`distanceSq(Vector2D p1, Vector2D p2)` Compute the square of the distance between two vectors.
    `void` | Line.`reset(Vector2D p, double alpha)` Reset the instance as if built from a line and an angle.
    `void` | Line.`reset(Vector2D p1, Vector2D p2)` Reset the instance as if built from two points.
    `void` | Line.`translateToPoint(Vector2D p)` Translate the line to force it passing by a point.

    Method parameters in org.apache.commons.math3.geometry.euclidean.twod with type arguments of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `EnclosingBall<Euclidean2D,Vector2D>` | DiskGenerator.`ballOnSupport(List<Vector2D> support)` Create a ball whose boundary lies on prescribed support points.

    Constructors in org.apache.commons.math3.geometry.euclidean.twod with parameters of type Vector2D
    Constructor and Description
    `Line(Vector2D p, double angle)` Deprecated. as of 3.3, replaced with `Line.Line(Vector2D, double, double)`
    `Line(Vector2D p, double angle, double tolerance)` Build a line from a point and an angle.
    `Line(Vector2D p1, Vector2D p2)` Deprecated. as of 3.3, replaced with `Line.Line(Vector2D, Vector2D, double)`
    `Line(Vector2D p1, Vector2D p2, double tolerance)` Build a line from two points.
    `PolygonsSet(double hyperplaneThickness, Vector2D... vertices)` Build a polygon from a simple list of vertices.
    `Segment(Vector2D start, Vector2D end, Line line)` Build a segment.
    `SubLine(Vector2D start, Vector2D end)` Deprecated. as of 3.3, replaced with `SubLine.SubLine(Vector2D, Vector2D, double)`
    `SubLine(Vector2D start, Vector2D end, double tolerance)` Create a sub-line from two endpoints.
    `Vector2D(double a, Vector2D u)` Multiplicative constructor Build a vector from another one and a scale factor.
    `Vector2D(double a1, Vector2D u1, double a2, Vector2D u2)` Linear constructor Build a vector from two other ones and corresponding scale factors.
    `Vector2D(double a1, Vector2D u1, double a2, Vector2D u2, double a3, Vector2D u3)` Linear constructor Build a vector from three other ones and corresponding scale factors.
    `Vector2D(double a1, Vector2D u1, double a2, Vector2D u2, double a3, Vector2D u3, double a4, Vector2D u4)` Linear constructor Build a vector from four other ones and corresponding scale factors.

  - ### Uses of Vector2D in org.apache.commons.math3.geometry.euclidean.twod.hull

    Methods in org.apache.commons.math3.geometry.euclidean.twod.hull that return Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Vector2D[]` | ConvexHull2D.`getVertices()` Get the vertices of the convex hull.

    Methods in org.apache.commons.math3.geometry.euclidean.twod.hull that return types with arguments of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Collection<Vector2D>` | MonotoneChain.`findHullVertices(Collection<Vector2D> points)` Find the convex hull vertices from the set of input points.
    `static Collection<Vector2D>` | AklToussaintHeuristic.`reducePoints(Collection<Vector2D> points)` Returns a point set that is reduced by all points for which it is safe to assume that they are not part of the convex hull.

    Method parameters in org.apache.commons.math3.geometry.euclidean.twod.hull with type arguments of type Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Collection<Vector2D>` | MonotoneChain.`findHullVertices(Collection<Vector2D> points)` Find the convex hull vertices from the set of input points.
    `ConvexHull2D` | ConvexHullGenerator2D.`generate(Collection<Vector2D> points)` Builds the convex hull from the set of input points.
    `static Collection<Vector2D>` | AklToussaintHeuristic.`reducePoints(Collection<Vector2D> points)` Returns a point set that is reduced by all points for which it is safe to assume that they are not part of the convex hull.

    Constructors in org.apache.commons.math3.geometry.euclidean.twod.hull with parameters of type Vector2D
    Constructor and Description
    `ConvexHull2D(Vector2D[] vertices, double tolerance)` Simple constructor.

  - ### Uses of Vector2D in org.apache.commons.math3.geometry.spherical.oned

    Methods in org.apache.commons.math3.geometry.spherical.oned that return Vector2D
    Modifier and Type | Method and Description
    --- | ---
    `Vector2D` | S1Point.`getVector()` Get the corresponding normalized vector in the 2D euclidean space.

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