StraightLine2D (java-geom 3.4.0 API)

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math.geom2d.line
Class StraightLine2D

Package class diagram package StraightLine2D

java.lang.Object
  math.geom2d.curve.AbstractContinuousCurve2D
      math.geom2d.curve.AbstractSmoothCurve2D
          math.geom2d.line.AbstractLine2D
              math.geom2d.line.StraightLine2D

All Implemented Interfaces:: Serializable, Cloneable, CircleLine2D, CirculinearBoundary2D, CirculinearContinuousCurve2D, CirculinearContour2D, CirculinearCurve2D, CirculinearElement2D, CirculinearShape2D, ContinuousCirculinearCurve2D, ContinuousCurve2D, Curve2D, SmoothCurve2D, Boundary2D, ContinuousBoundary2D, ContinuousOrientedCurve2D, OrientedCurve2D, SmoothBoundary2D, SmoothOrientedCurve2D, LinearShape2D, Shape2D

public class StraightLine2D
extends AbstractLine2D
implements SmoothBoundary2D, Cloneable, CircleLine2D
extends AbstractLine2D
implements SmoothBoundary2D, Cloneable, CircleLine2D

Implementation of a straight line. Such a line can be constructed using two points, a point and a parallel line or straight object, or with coefficient of the Cartesian equation.

See Also:: Serialized Form

Field Summary

Fields inherited from class math.geom2d.line.AbstractLine2D
`dx, dy, x0, y0`

Fields inherited from interface math.geom2d.Shape2D
`ACCURACY`

Constructor Summary
`StraightLine2D()` Empty constructor: a straight line corresponding to horizontal axis.
`StraightLine2D(double a, double b, double c)` Define a new straight line, from the coefficients of the cartesian equation.
`StraightLine2D(double xp, double yp, double dx, double dy)` Define a new Straight line going through the point (xp, yp) and with the direction dx, dy.
`StraightLine2D(LinearShape2D line)` Define a new Straight line at the same position and with the same direction than an other straight object (line, edge or ray).
`StraightLine2D(LinearShape2D line, Point2D point)` Define a new Straight line, parallel to another straigth object (ray, straight line or edge), and going through the given point.
`StraightLine2D(Point2D point, double angle)` Define a new Straight line going through the given point, and with the specified direction given by angle.
`StraightLine2D(Point2D point, double dx, double dy)` Define a new Straight line going through the given point, and with the specified direction vector.
`StraightLine2D(Point2D point1, Point2D point2)` Define a new Straight line going through the two given points.
`StraightLine2D(Point2D point, Vector2D direction)` Define a new Straight line going through the given point, and with the specified direction vector.

Method Summary
`GeneralPath`	`appendPath(GeneralPath path)` Append the path of the curve to the given path.
`StraightLine2D`	`clone()` Ensures public declaration of clone(), and ensures valid return type.
`boolean`	`contains(double x, double y)` Returns true if the point (x, y) lies on the line, with precision given by Shape2D.ACCURACY.
`boolean`	`contains(Point2D p)` Returns true if the point p lies on the line, with precision given by Shape2D.ACCURACY.
`static StraightLine2D`	`create(Point2D point, double angle)` Creates a straight line going through a point and with a given angle.
`static StraightLine2D`	`create(Point2D p1, Point2D p2)` Creates a straight line through 2 points.
`static StraightLine2D`	`create(Point2D origin, Vector2D direction)` Creates a straight line through a point and with a given direction vector.
`static StraightLine2D`	`createCartesian(double a, double b, double c)` Return a new Straight line, with the given coefficient of the cartesian equation (ax + by + c = 0).
`static StraightLine2D`	`createCartesianLine2D(double a, double b, double c)` Deprecated. since 0.6.3, use createCartesian instead
`static StraightLine2D`	`createMedian(Point2D p1, Point2D p2)` Creates a median between 2 points.
`static StraightLine2D`	`createMedian2D(Point2D p1, Point2D p2)` Deprecated. since 0.6.3, use createMedian instead
`static StraightLine2D`	`createOrthogonalLine2D(LinearShape2D linear, Point2D point)` Deprecated. since 0.6.3, use createPerpendicular instead
`static StraightLine2D`	`createParallel(LinearShape2D linear, double d)` Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.
`static StraightLine2D`	`createParallel(LinearShape2D line, Point2D point)` Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.
`static StraightLine2D`	`createParallelLine2D(LinearShape2D linear, double d)` Deprecated. since 0.6.3, use createParallel() instead
`static StraightLine2D`	`createParallelLine2D(LinearShape2D line, Point2D point)` Deprecated. since 0.6.3, use createParallel() instead
`static StraightLine2D`	`createPerpendicular(LinearShape2D linear, Point2D point)` Return a new Straight line, perpendicular to a straight object (ray, straight line or edge), and going through the given point.
`static StraightLine2D`	`createStraightLine2D(Point2D point, double dx, double dy)` Deprecated. since 0.6.3, use create() instead
`static StraightLine2D`	`createStraightLine2D(Point2D p1, Point2D p2)` Deprecated. use create(Point2D, Point2D) instead
`boolean`	`equals(Object obj)`
`void`	`fill(Graphics2D g2)`
`Polyline2D`	`getAsPolyline(int n)` Throws an exception when called.
`Collection<ContinuousBoundary2D>`	`getBoundaryCurves()` Returns the different continuous curves composing the boundary
`Box2D`	`getBoundingBox()` Returns the bounding box of the shape.
`Collection<? extends StraightLine2D>`	`getContinuousCurves()` Need to override to cast the type.
`double`	`getDistance(double x, double y)` Returns the distance of the point (x, y) to this straight line.
`Domain2D`	`getDomain()` Returns the domain delimited by this boundary.
`Point2D`	`getFirstPoint()` Throws an infiniteShapeException
`GeneralPath`	`getGeneralPath()` Throws an infiniteShapeException
`static Point2D`	`getIntersection(Point2D p1, Point2D p2, Point2D p3, Point2D p4)` Compute the intersection point of the two (infinite) lines going through p1 and p2 for the first one, and p3 and p4 for the second one.
`Point2D`	`getLastPoint()` Throws an infiniteShapeException
`StraightLine2D`	`getParallel(double d)` Return the parallel line located at a distance d.
`StraightLine2D`	`getParallel(Point2D point)` Returns a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.
`StraightLine2D`	`getPerpendicular(Point2D point)` Return a new Straight line, parallel to another straigth object (ray, straight line or edge), and going through the given point.
`Point2D`	`getPoint(double t)` Gets the point specified with the parametric representation of the line.
`StraightLine2D`	`getReverseCurve()` Returns the straight line with same origin but with opposite direction vector.
`Collection<Point2D>`	`getSingularPoints()` Returns an empty list of points.
`double`	`getT0()` Returns the parameter of the first point of the line, which is always Double.NEGATIVE_INFINITY.
`double`	`getT1()` Returns the parameter of the last point of the line, which is always Double.POSITIVE_INFINITY.
`double`	`getWindingAngle(Point2D point)` Return the angle portion that the curve turn around the given point.
`boolean`	`isBounded()` Always returns false, because a line is not bounded.
`boolean`	`isSingular(double pos)` Returns false, whatever the position.
`void`	`setCartesianEquation(double a, double b, double c)` Deprecated. lines will become imutable in a future release
`void`	`setLine(double x0, double y0, double dx, double dy)` Deprecated. lines will become imutable in a future release
`void`	`setLine(LinearShape2D linear)` Deprecated. lines will become imutable in a future release
`void`	`setLine(Point2D p1, Point2D p2)` Deprecated. lines will become imutable in a future release
`void`	`setPoints(double x1, double y1, double x2, double y2)` Deprecated. lines will become imutable in a future release
`String`	`toString()`
`StraightLine2D`	`transform(AffineTransform2D trans)` Returns the transformed line.
`CircleLine2D`	`transform(CircleInversion2D inv)` Transforms the shape by a circle inversion.

Methods inherited from class math.geom2d.line.AbstractLine2D
clip, getBuffer, getCartesianEquation, getCurvature, getDistance, getHorizontalAngle, getIntersection, getIntersection, getIntersections, getLength, getLength, getOrigin, getParallel, getParametric, getPolarCoefficients, getPosition, getPosition, getPositionOnLine, getPositionOnLine, getProjectedPoint, getProjectedPoint, getSignedDistance, getSignedDistance, getSignedPolarCoefficients, getSmoothPieces, getSubCurve, getSupportingLine, getSymmetric, getSymmetric, getTangent, getVector, isClosed, isColinear, isColinear, isEmpty, isInside, isParallel, isParallel, project, supportContains

Methods inherited from class math.geom2d.line.AbstractLine2D

clip, getBuffer, getCartesianEquation, getCurvature, getDistance, getHorizontalAngle, getIntersection, getIntersection, getIntersections, getLength, getLength, getOrigin, getParallel, getParametric, getPolarCoefficients, getPosition, getPosition, getPositionOnLine, getPositionOnLine, getProjectedPoint, getProjectedPoint, getSignedDistance, getSignedDistance, getSignedPolarCoefficients, getSmoothPieces, getSubCurve, getSupportingLine, getSymmetric, getSymmetric, getTangent, getVector, isClosed, isColinear, isColinear, isEmpty, isInside, isParallel, isParallel, project, supportContains

Methods inherited from class math.geom2d.curve.AbstractSmoothCurve2D
`getLeftTangent, getRightTangent`

Methods inherited from class math.geom2d.curve.AbstractContinuousCurve2D
`draw, getAsAWTShape, wrapCurve`

Methods inherited from class java.lang.Object
`finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface math.geom2d.circulinear.CirculinearElement2D
`clip, getSubCurve`

Methods inherited from interface math.geom2d.circulinear.CirculinearContinuousCurve2D
`getSmoothPieces`

Methods inherited from interface math.geom2d.curve.ContinuousCurve2D
`getLeftTangent, getRightTangent, isClosed`

Methods inherited from interface math.geom2d.curve.Curve2D
`draw, getAsAWTShape, getIntersections, getPosition, project`

Methods inherited from interface math.geom2d.Shape2D
`getDistance, isEmpty`

Methods inherited from interface math.geom2d.curve.SmoothCurve2D
`getCurvature, getTangent`

Methods inherited from interface math.geom2d.domain.Boundary2D
`isInside`

Constructor Detail

StraightLine2D

public StraightLine2D()

Empty constructor: a straight line corresponding to horizontal axis.

StraightLine2D

public StraightLine2D(Point2D point1,
                      Point2D point2)

Define a new Straight line going through the two given points.

StraightLine2D

public StraightLine2D(Point2D point,
                      Vector2D direction)

Define a new Straight line going through the given point, and with the specified direction vector.

StraightLine2D

public StraightLine2D(Point2D point,
                      double dx,
                      double dy)

Define a new Straight line going through the given point, and with the specified direction vector.

StraightLine2D

public StraightLine2D(Point2D point,
                      double angle)

Define a new Straight line going through the given point, and with the specified direction given by angle.

StraightLine2D

public StraightLine2D(LinearShape2D line)

Define a new Straight line at the same position and with the same direction than an other straight object (line, edge or ray).

StraightLine2D

public StraightLine2D(double xp,
                      double yp,
                      double dx,
                      double dy)

Define a new Straight line going through the point (xp, yp) and with the direction dx, dy.

StraightLine2D

public StraightLine2D(LinearShape2D line,
                      Point2D point)

Define a new Straight line, parallel to another straigth object (ray, straight line or edge), and going through the given point.

StraightLine2D

public StraightLine2D(double a,
                      double b,
                      double c)

Define a new straight line, from the coefficients of the cartesian equation. The starting point of the line is then the point of the line closest to the origin, and the direction vector has unit norm.

Method Detail

create

public static final StraightLine2D create(Point2D point,
                                          double angle)

Creates a straight line going through a point and with a given angle.

create

public static final StraightLine2D create(Point2D p1,
                                          Point2D p2)

Creates a straight line through 2 points.

create

public static final StraightLine2D create(Point2D origin,
                                          Vector2D direction)

Creates a straight line through a point and with a given direction vector.

createStraightLine2D

@Deprecated
public static final StraightLine2D createStraightLine2D(Point2D p1,
                                                                   Point2D p2)

Deprecated. use create(Point2D, Point2D) instead

createMedian

public static final StraightLine2D createMedian(Point2D p1,
                                                Point2D p2)

Creates a median between 2 points.

Parameters:: p1 - one point; p2 - another point
Returns:: the median of points p1 and p2
Since:: 0.6.3

createMedian2D

@Deprecated
public static final StraightLine2D createMedian2D(Point2D p1,
                                                             Point2D p2)

Deprecated. since 0.6.3, use createMedian instead

Creates a median between 2 points.

Parameters:: p1 - one point; p2 - another point
Returns:: the median of points p1 and p2

createStraightLine2D

@Deprecated
public static final StraightLine2D createStraightLine2D(Point2D point,
                                                                   double dx,
                                                                   double dy)

Deprecated. since 0.6.3, use create() instead

Return a new Straight line going through the given point, and with the specified direction vector.

createParallel

public static final StraightLine2D createParallel(LinearShape2D line,
                                                  Point2D point)

Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.

Since:: 0.6.3

createParallelLine2D

@Deprecated
public static final StraightLine2D createParallelLine2D(LinearShape2D line,
                                                                   Point2D point)

Deprecated. since 0.6.3, use createParallel() instead

Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.

createParallel

public static final StraightLine2D createParallel(LinearShape2D linear,
                                                  double d)

Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.

Since:: 0.6.3

createParallelLine2D

@Deprecated
public static final StraightLine2D createParallelLine2D(LinearShape2D linear,
                                                                   double d)

Deprecated. since 0.6.3, use createParallel() instead

Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.

createPerpendicular

public static final StraightLine2D createPerpendicular(LinearShape2D linear,
                                                       Point2D point)

Return a new Straight line, perpendicular to a straight object (ray, straight line or edge), and going through the given point.

Since:: 0.6.3

createOrthogonalLine2D

@Deprecated
public static final StraightLine2D createOrthogonalLine2D(LinearShape2D linear,
                                                                     Point2D point)

Deprecated. since 0.6.3, use createPerpendicular instead

Return a new Straight line, parallel to another straight object (ray, straight line or edge), and going through the given point.

createCartesian

public static final StraightLine2D createCartesian(double a,
                                                   double b,
                                                   double c)

Return a new Straight line, with the given coefficient of the cartesian equation (a*x + b*y + c = 0).

createCartesianLine2D

@Deprecated
public static final StraightLine2D createCartesianLine2D(double a,
                                                                    double b,
                                                                    double c)

Deprecated. since 0.6.3, use createCartesian instead

Return a new Straight line, with the given coefficient of the cartesian equation (a*x + b*y + c = 0).

getIntersection

public static final Point2D getIntersection(Point2D p1,
                                            Point2D p2,
                                            Point2D p3,
                                            Point2D p4)

Compute the intersection point of the two (infinite) lines going through p1 and p2 for the first one, and p3 and p4 for the second one. Returns null if two lines are parallel.