org.gephi.lib.gleem.linalg

Class Line

java.lang.Object

org.gephi.lib.gleem.linalg.Line

public class Line
extends Object

Represents a line in 3D space.

Field Summary

Fields

Modifier and Type	Field and Description
private Vec3f	alongVec For computing projections along line
private Vec3f	direction Normalized
private Vec3f	point

Constructor Summary

Constructors

Constructor and Description
Line() Default constructor initializes line to point (0, 0, 0) and direction (1, 0, 0)
Line(Vec3f direction, Vec3f point) Line goes in direction direction through the point point.

Method Summary

Modifier and Type	Method and Description
boolean	closestPointToRay(Vec3f rayStart, Vec3f rayDirection, Vec3f closestPoint) Find closest point on this line to the given ray, specified by start point and direction.
Vec3f	getDirection() Direction is normalized internally, so direction is not necessarily equal to plane.setDirection(direction); plane.getDirection();
Vec3f	getPoint()
void	projectPoint(Vec3f pt, Vec3f projPt) Project a point onto the line
private void	recalc()
void	setDirection(Vec3f direction) Setter does some work to maintain internal caches.
void	setPoint(Vec3f point) Setter does some work to maintain internal caches.

Methods inherited from class java.lang.Object

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

Field Detail

point

private Vec3f point

direction

private Vec3f direction

Normalized

alongVec

private Vec3f alongVec

For computing projections along line

Constructor Detail

Line

public Line()

Default constructor initializes line to point (0, 0, 0) and direction (1, 0, 0)

Line

public Line(Vec3f direction,
            Vec3f point)

Line goes in direction direction through the point point. direction does not need to be normalized but must not be the zero vector.

Method Detail

setDirection

public void setDirection(Vec3f direction)

Setter does some work to maintain internal caches. direction does not need to be normalized but must not be the zero vector.

getDirection

public Vec3f getDirection()

Direction is normalized internally, so direction is not necessarily equal to plane.setDirection(direction); plane.getDirection();

setPoint

public void setPoint(Vec3f point)

Setter does some work to maintain internal caches.

getPoint

public Vec3f getPoint()

projectPoint

public void projectPoint(Vec3f pt,
                         Vec3f projPt)

Project a point onto the line

closestPointToRay

public boolean closestPointToRay(Vec3f rayStart,
                                 Vec3f rayDirection,
                                 Vec3f closestPoint)

Find closest point on this line to the given ray, specified by start point and direction. If ray is parallel to this line, returns false and closestPoint is not modified.

recalc

private void recalc()