math.geom2d.conic
Class HyperbolaBranchArc2D

java.lang.Object
  math.geom2d.conic.HyperbolaBranchArc2D

All Implemented Interfaces:

java.awt.Shape, ContinuousCurve2D, ContinuousOrientedCurve2D, Curve2D, OrientedCurve2D, SmoothCurve2D, Shape2D

public class HyperbolaBranchArc2D
extends java.lang.Object
implements ContinuousOrientedCurve2D, SmoothCurve2D

An arc of hyperbola, defined from the parent hyperbola branch, and two positions on the parent curve.

Author:

dlegland

Field Summary

Fields inherited from interface math.geom2d.curve.ContinuousCurve2D

CIRCLE, CLOSED_EDGE, LOOP, OPEN_EDGE

Fields inherited from interface math.geom2d.Shape2D

ACCURACY, defaultClipWindow, EMPTY_SET

Constructor Summary

HyperbolaBranchArc2D(HyperbolaBranch2D branch, double t0, double t1)

Method Summary

java.awt.geom.GeneralPath	appendPath(java.awt.geom.GeneralPath path) Append the path of the curve to the given path.
CurveSet2D<? extends HyperbolaBranchArc2D>	clip(Box2D box) Clip the hyperbola branch arc by a box.
boolean	contains(double x, double y)
boolean	contains(double x, double y, double w, double h) Return false: a curve does not contain a rectangle
boolean	contains(java.awt.geom.Point2D p)
boolean	contains(java.awt.geom.Rectangle2D r) Return false: a curve does not contain a rectangle
Polyline2D	getAsPolyline(int n) Returns an approximation of the curve as a polyline with n line segments.
Box2D	getBoundingBox() Returns the bounding box of the shape.
java.awt.Rectangle	getBounds()
java.awt.geom.Rectangle2D	getBounds2D()
java.util.Collection<ContinuousCurve2D>	getContinuousCurves() Returns the collection of continuous curves which constitute this curve.
double	getCurvature(double t)
double	getDistance(double x, double y) get the distance of the shape to the given point, specified by x and y, or the distance of point to the frontier of the shape in the case of a plain (i.e. fillable) shape.
double	getDistance(java.awt.geom.Point2D point) get the distance of the shape to the given point, or the distance of point to the frontier of the shape in the case of a plain shape.
Point2D	getFirstPoint() Get the first point of the curve.
java.awt.geom.GeneralPath	getGeneralPath()
HyperbolaBranch2D	getHyperbolaBranch()
java.util.Collection<Point2D>	getIntersections(StraightObject2D line) Returns the intersection points of the curve with the specified line.
Point2D	getLastPoint() Get the last point of the curve.
java.awt.geom.PathIterator	getPathIterator(java.awt.geom.AffineTransform trans)
java.awt.geom.PathIterator	getPathIterator(java.awt.geom.AffineTransform trans, double flatness)
Point2D	getPoint(double t) Gets the point from a parametric representation of the curve.
Point2D	getPoint(double t, Point2D point) Same as getPoint(t), but gives the point as a parameter.
double	getPosition(Point2D point) Get position of the point on the curve.
HyperbolaBranchArc2D	getReverseCurve() Returns the curve with same trace on the plane with parametrization in reverse order.
double	getSignedDistance(double x, double y) The same as getSignedDistance(Point2D), but by passing 2 double as arguments.
double	getSignedDistance(java.awt.geom.Point2D point) Get the signed distance of the curve to the given point : this distance is positive if the point lies outside the shape, and is negative if the point lies inside the shape.
java.util.Collection<? extends SmoothCurve2D>	getSmoothPieces() returns an instance of ArrayList containing only this.
HyperbolaBranchArc2D	getSubCurve(double t0, double t1) Returns a new HyperbolaBranchArc2D, with same parent hyperbola branch, and with new parameterization bounds.
double	getT0() Get value of parameter t for the first point of the curve.
double	getT1() Get value of parameter t for the last point of the curve.
Vector2D	getTangent(double t)
double	getWindingAngle(java.awt.geom.Point2D point) Return the angle portion that the curve turn around the given point.
boolean	intersects(double xr, double yr, double wr, double hr)
boolean	intersects(java.awt.geom.Rectangle2D r)
boolean	isBounded() Returns true if the shape is bounded, that is if we can draw a finite rectangle enclosing the shape.
boolean	isClosed() return false.
boolean	isInside(java.awt.geom.Point2D pt) return true if the point is 'inside' the domain bounded by the curve.
double	project(Point2D point) Returns the position of the closest orthogonal projection of the point on the curve, or of the closest singular point.
HyperbolaBranchArc2D	transform(AffineTransform2D trans) Transforms the curve by an affine transform.

Methods inherited from class java.lang.Object

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

Constructor Detail

HyperbolaBranchArc2D

public HyperbolaBranchArc2D(HyperbolaBranch2D branch,
                            double t0,
                            double t1)

Method Detail

getHyperbolaBranch

public HyperbolaBranch2D getHyperbolaBranch()

getCurvature

public double getCurvature(double t)

Specified by:

getCurvature in interface SmoothCurve2D

getTangent

public Vector2D getTangent(double t)

Specified by:

getTangent in interface SmoothCurve2D

getSignedDistance

public double getSignedDistance(java.awt.geom.Point2D point)

Description copied from interface: OrientedCurve2D

Get the signed distance of the curve to the given point : this distance is positive if the point lies outside the shape, and is negative if the point lies inside the shape. In this case, absolute value of distance is equals to the distance to the border of the shape.

Specified by:

getSignedDistance in interface OrientedCurve2D

Parameters:

point - a point of the plane

Returns:

the signed distance to the curve

getSignedDistance

public double getSignedDistance(double x,
                                double y)

Description copied from interface: OrientedCurve2D

The same as getSignedDistance(Point2D), but by passing 2 double as arguments.

Specified by:

getSignedDistance in interface OrientedCurve2D

Parameters:

x - x-coord of a point

y - y-coord of a point

Returns:

the signed distance of the point (x,y) to the curve

getWindingAngle

public double getWindingAngle(java.awt.geom.Point2D point)

Description copied from interface: OrientedCurve2D

Return the angle portion that the curve turn around the given point. Result is a signed angle.

Specified by:

getWindingAngle in interface OrientedCurve2D

Parameters:

point - a point of the plane

Returns:

a signed angle

isInside

public boolean isInside(java.awt.geom.Point2D pt)

Description copied from interface: OrientedCurve2D

return true if the point is 'inside' the domain bounded by the curve.

Specified by:

isInside in interface OrientedCurve2D

Parameters:

pt - a point in the plane

Returns:

true if the point is on the left side of the curve.

appendPath

public java.awt.geom.GeneralPath appendPath(java.awt.geom.GeneralPath path)

Description copied from interface: ContinuousCurve2D

Append the path of the curve to the given path.

Specified by:

appendPath in interface ContinuousCurve2D

Parameters:

path - a path to modify

Returns:

the modified path

getAsPolyline

public Polyline2D getAsPolyline(int n)

Description copied from interface: ContinuousCurve2D

Returns an approximation of the curve as a polyline with n line segments. If the curve is closed, the method should return an instance of ClosedPolyline2D.

Specified by:

getAsPolyline in interface ContinuousCurve2D

Parameters:

n - the number of line segments

Returns:

a closed polyline with n line segments.

getSmoothPieces

public java.util.Collection<? extends SmoothCurve2D> getSmoothPieces()

returns an instance of ArrayList containing only this.

Specified by:

getSmoothPieces in interface ContinuousCurve2D

isClosed

public boolean isClosed()

return false.

Specified by:

isClosed in interface ContinuousCurve2D

getFirstPoint

public Point2D getFirstPoint()

Description copied from interface: Curve2D

Get the first point of the curve. It must returns the same result as getPoint(getT0()).

Specified by:

getFirstPoint in interface Curve2D

Returns:

the first point of the curve

getLastPoint

public Point2D getLastPoint()

Description copied from interface: Curve2D

Get the last point of the curve. It must returns the same result as getPoint(getT1()).

Specified by:

getLastPoint in interface Curve2D

Returns:

the last point of the curve.

getIntersections

public java.util.Collection<Point2D> getIntersections(StraightObject2D line)

Description copied from interface: Curve2D

Returns the intersection points of the curve with the specified line. The length of the result array is the number of intersection points.

Specified by:

getIntersections in interface Curve2D

getPoint

public Point2D getPoint(double t)

Description copied from interface: Curve2D

Gets the point from a parametric representation of the curve. If the parameter lies outside the definition range, the parameter corresponding to the closest bound is used instead. This method can be used to draw an approximated outline of a curve, by selecting multiple values for t and drawing lines between them.

Specified by:

getPoint in interface Curve2D

getPoint

public Point2D getPoint(double t,
                        Point2D point)

Description copied from interface: Curve2D

Same as getPoint(t), but gives the point as a parameter. This avoids repetitive memory allocations.

Specified by:

getPoint in interface Curve2D

getPosition

public double getPosition(Point2D point)

Description copied from interface: Curve2D

Get position of the point on the curve. If the point does not belong to the curve, return Double.NaN.

Specified by:

getPosition in interface Curve2D

Parameters:

point - a point belonging to the curve

Returns:

the position of the point on the curve

project

public double project(Point2D point)

Description copied from interface: Curve2D

Returns the position of the closest orthogonal projection of the point on the curve, or of the closest singular point. This function should always returns a valid value.

Specified by:

project in interface Curve2D

Parameters:

point - a point to project

Returns:

the position of the closest orthogonal projection

getReverseCurve

public HyperbolaBranchArc2D getReverseCurve()

Description copied from interface: Curve2D

Returns the curve with same trace on the plane with parametrization in reverse order.

Specified by:

getReverseCurve in interface ContinuousCurve2D

Specified by:

getReverseCurve in interface ContinuousOrientedCurve2D

Specified by:

getReverseCurve in interface Curve2D

Specified by:

getReverseCurve in interface OrientedCurve2D

Specified by:

getReverseCurve in interface SmoothCurve2D

getContinuousCurves

public java.util.Collection<ContinuousCurve2D> getContinuousCurves()

Description copied from interface: Curve2D

Returns the collection of continuous curves which constitute this curve.

Specified by:

getContinuousCurves in interface Curve2D

Returns:

a collection of continuous curves.

getSubCurve

public HyperbolaBranchArc2D getSubCurve(double t0,
                                        double t1)

Returns a new HyperbolaBranchArc2D, with same parent hyperbola branch, and with new parameterization bounds. The new bounds are constrained to belong to the old bounds interval. If t1

Specified by:

getSubCurve in interface ContinuousCurve2D

Specified by:

getSubCurve in interface ContinuousOrientedCurve2D

Specified by:

getSubCurve in interface Curve2D

Specified by:

getSubCurve in interface SmoothCurve2D

Parameters:

t0 - position of the start of the sub-curve

t1 - position of the end of the sub-curve

Returns:

the portion of original curve comprised between t0 and t1.

getT0

public double getT0()

Description copied from interface: Curve2D

Get value of parameter t for the first point of the curve. It can be -Infinity, in this case the piece of curve is not bounded.

Specified by:

getT0 in interface Curve2D

getT1

public double getT1()

Description copied from interface: Curve2D

Get value of parameter t for the last point of the curve. It can be +Infinity, in this case the piece of curve is not bounded.

Specified by:

getT1 in interface Curve2D

getBoundingBox

public Box2D getBoundingBox()

Description copied from interface: Shape2D

Returns the bounding box of the shape.

Specified by:

getBoundingBox in interface Shape2D

Returns:

the bounding box of the shape.

clip

public CurveSet2D<? extends HyperbolaBranchArc2D> clip(Box2D box)

Clip the hyperbola branch arc by a box. The result is an instance of CurveSet2D, which contains only instances of HyperbolaBranchArc2D. If the shape is not clipped, the result is an instance of CurveSet2D which contains 0 curves.

Specified by:

clip in interface ContinuousCurve2D

Specified by:

clip in interface ContinuousOrientedCurve2D

Specified by:

clip in interface Curve2D

Specified by:

clip in interface OrientedCurve2D

Specified by:

clip in interface SmoothCurve2D

Specified by:

clip in interface Shape2D

Parameters:

box - the clipping box

Returns:

the clipped shape

getDistance

public double getDistance(java.awt.geom.Point2D point)

Description copied from interface: Shape2D

get the distance of the shape to the given point, or the distance of point to the frontier of the shape in the case of a plain shape.

Specified by:

getDistance in interface Shape2D

getDistance

public double getDistance(double x,
                          double y)

Description copied from interface: Shape2D

get the distance of the shape to the given point, specified by x and y, or the distance of point to the frontier of the shape in the case of a plain (i.e. fillable) shape.

Specified by:

getDistance in interface Shape2D

isBounded

public boolean isBounded()

Description copied from interface: Shape2D

Returns true if the shape is bounded, that is if we can draw a finite rectangle enclosing the shape. For example, a straight line or a parabola are not bounded.

Specified by:

isBounded in interface Shape2D

transform

public HyperbolaBranchArc2D transform(AffineTransform2D trans)

Description copied from interface: Curve2D

Transforms the curve by an affine transform. The result is an instance of Curve2D.

Specified by:

transform in interface ContinuousCurve2D

Specified by:

transform in interface ContinuousOrientedCurve2D

Specified by:

transform in interface Curve2D

Specified by:

transform in interface OrientedCurve2D

Specified by:

transform in interface SmoothCurve2D

Specified by:

transform in interface Shape2D

Parameters:

trans - an affine transform

Returns:

the transformed shape

contains

public boolean contains(java.awt.geom.Point2D p)

Specified by:

contains in interface java.awt.Shape

contains

public boolean contains(double x,
                        double y)

Specified by:

contains in interface java.awt.Shape

contains

public boolean contains(java.awt.geom.Rectangle2D r)

Return false: a curve does not contain a rectangle

Specified by:

contains in interface java.awt.Shape

contains

public boolean contains(double x,
                        double y,
                        double w,
                        double h)

Return false: a curve does not contain a rectangle

Specified by:

contains in interface java.awt.Shape

intersects

public boolean intersects(java.awt.geom.Rectangle2D r)

Specified by:

intersects in interface java.awt.Shape

intersects

public boolean intersects(double xr,
                          double yr,
                          double wr,
                          double hr)

Specified by:

intersects in interface java.awt.Shape

getBounds

public java.awt.Rectangle getBounds()

Specified by:

getBounds in interface java.awt.Shape

getBounds2D

public java.awt.geom.Rectangle2D getBounds2D()

Specified by:

getBounds2D in interface java.awt.Shape

getGeneralPath

public java.awt.geom.GeneralPath getGeneralPath()

getPathIterator

public java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform trans)

Specified by:

getPathIterator in interface java.awt.Shape

getPathIterator

public java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform trans,
                                                  double flatness)

Specified by:

getPathIterator in interface java.awt.Shape