math.geom3d.line

Class StraightLine3D

java.lang.Object

math.geom3d.line.StraightLine3D

All Implemented Interfaces:

ContinuousCurve3D, Curve3D, Shape3D

public class StraightLine3D
extends java.lang.Object
implements ContinuousCurve3D

Field Summary

Fields inherited from interface math.geom3d.Shape3D

ACCURACY

Constructor Summary

Constructors

Constructor and Description
StraightLine3D()
StraightLine3D(double x0, double y0, double z0, double dx, double dy, double dz)
StraightLine3D(Point3D p1, Point3D p2) Constructs a line passing through the 2 points.
StraightLine3D(Point3D origin, Vector3D direction)

Method Summary

Modifier and Type	Method and Description
Box3D	boundingBox()
Shape3D	clip(Box3D box)
boolean	contains(Point3D point)
java.util.Collection<StraightLine3D>	continuousCurves() Returns the collection of continuous curves which constitute this curve.
Vector3D	direction()
double	distance(Point3D p) Gets 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.
Point3D	firstPoint() Get the first point of the curve.
double	getT0() Returns -INFINITY;
double	getT1() Returns +INFINITY;
boolean	isBounded() Returns true if the shape is bounded, that is if we can draw a finite rectangle enclosing the shape.
boolean	isEmpty()
Point3D	lastPoint() Get the last point of the curve.
Point3D	origin()
Point3D	point(double t) Gets the point from a parametric representation of the curve.
double	position(Point3D point) Get position of the point on the curve.
StraightLine2D	project(Plane3D plane) not yet implemented
double	project(Point3D point) Compute the position of the orthogonal projection of the given point on this line.
StraightLine3D	reverseCurve() Returns the curve with same trace on the plane with parametrization in reverse order.
java.util.Collection<Point3D>	singularPoints() Returns an empty array of Point3D.
Curve3D	subCurve(double t0, double t1) Returns a portion of the original curve, delimited by two positions on the curve.
StraightLine3D	transform(AffineTransform3D trans) Transforms the curve by an affine transform.

Methods inherited from class java.lang.Object

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

Constructor Detail

StraightLine3D

public StraightLine3D()

StraightLine3D

public StraightLine3D(Point3D origin,
                      Vector3D direction)

StraightLine3D

public StraightLine3D(Point3D p1,
                      Point3D p2)

Constructs a line passing through the 2 points.

Parameters:

p1 - the first point

p2 - the second point

StraightLine3D

public StraightLine3D(double x0,
                      double y0,
                      double z0,
                      double dx,
                      double dy,
                      double dz)

Method Detail

origin

public Point3D origin()

direction

public Vector3D direction()

project

public StraightLine2D project(Plane3D plane)

not yet implemented

clip

public Shape3D clip(Box3D box)

Specified by:

clip in interface Shape3D

contains

public boolean contains(Point3D point)

Specified by:

contains in interface Shape3D

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Shape3D

isBounded

public boolean isBounded()

Description copied from interface: Shape3D

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 Shape3D

boundingBox

public Box3D boundingBox()

Specified by:

boundingBox in interface Shape3D

distance

public double distance(Point3D p)

Description copied from interface: Shape3D

Gets 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:

distance in interface Shape3D

transform

public StraightLine3D transform(AffineTransform3D trans)

Description copied from interface: Curve3D

Transforms the curve by an affine transform. The result is an instance of Curve3D.

Specified by:

transform in interface Curve3D

Specified by:

transform in interface Shape3D

firstPoint

public Point3D firstPoint()

Description copied from interface: Curve3D

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

Specified by:

firstPoint in interface Curve3D

Returns:

the first point of the curve

lastPoint

public Point3D lastPoint()

Description copied from interface: Curve3D

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

Specified by:

lastPoint in interface Curve3D

Returns:

the last point of the curve.

point

public Point3D point(double t)

Description copied from interface: Curve3D

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:

point in interface Curve3D

position

public double position(Point3D point)

Description copied from interface: Curve3D

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

Specified by:

position in interface Curve3D

Parameters:

point - a point belonging to the curve

Returns:

the position of the point on the curve

reverseCurve

public StraightLine3D reverseCurve()

Description copied from interface: Curve3D

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

Specified by:

reverseCurve in interface Curve3D

singularPoints

public java.util.Collection<Point3D> singularPoints()

Returns an empty array of Point3D.

Specified by:

singularPoints in interface Curve3D

Returns:

a collection of Point3D.

subCurve

public Curve3D subCurve(double t0,
                        double t1)

Description copied from interface: Curve3D

Returns a portion of the original curve, delimited by two positions on the curve.

Specified by:

subCurve in interface Curve3D

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()

Returns -INFINITY;

Specified by:

getT0 in interface Curve3D

getT1

public double getT1()

Returns +INFINITY;

Specified by:

getT1 in interface Curve3D

project

public double project(Point3D point)

Compute the position of the orthogonal projection of the given point on this line.

Specified by:

project in interface Curve3D

Parameters:

point - a point to project

Returns:

the position of the closest orthogonal projection

continuousCurves

public java.util.Collection<StraightLine3D> continuousCurves()

Description copied from interface: Curve3D

Returns the collection of continuous curves which constitute this curve.

Specified by:

continuousCurves in interface Curve3D

Returns:

a collection of continuous curves.