javax.media.j3d
Class PickConeSegment

java.lang.Object
  javax.media.j3d.PickShape
      javax.media.j3d.PickCone
          javax.media.j3d.PickConeSegment

public final class PickConeSegment
extends PickCone

PickConeSegment is a finite cone segment pick shape. It can be used as an argument to the picking methods in BranchGroup and Locale.

Since:

Java 3D 1.2

See Also:

BranchGroup.pickAll(javax.media.j3d.PickShape), Locale.pickAll(javax.media.j3d.PickShape)

Field Summary

(package private) Point3d

end

Fields inherited from class javax.media.j3d.PickCone

direction, origin, spreadAngle

Fields inherited from class javax.media.j3d.PickShape

PICKBOUNDINGBOX, PICKBOUNDINGPOLYTOPE, PICKBOUNDINGSPHERE, PICKCONE, PICKCYLINDER, PICKPOINT, PICKRAY, PICKSEGMENT, PICKUNKNOWN

Constructor Summary

PickConeSegment()
Constructs an empty PickConeSegment.

PickConeSegment(Point3d origin, Point3d end, double spreadAngle)
Constructs a finite cone pick shape from the specified parameters.

Method Summary

private void	calcDirection() Calculates the direction for this PickCylinderSegment, based on start and end points.
void	getEnd(Point3d end) Gets the end point of this PickConeSegment.
(package private) boolean	intersect(Bounds bounds, Point4d pickPos) Return true if shape intersect with bounds.
void	set(Point3d origin, Point3d end, double spreadAngle) Sets the parameters of this PickCone to the specified values.
(package private) PickShape	transform(Transform3D t3d)

Methods inherited from class javax.media.j3d.PickCone

getDirection, getOrigin, getPickType, getRadius, getSpreadAngle, getStartPoint

Methods inherited from class javax.media.j3d.PickShape

distance

Methods inherited from class java.lang.Object

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

Field Detail

end

Point3d end

Constructor Detail

PickConeSegment

public PickConeSegment()

Constructs an empty PickConeSegment. The origin and end point of the cone are initialized to (0,0,0). The spread angle is initialized to PI/64 radians.

PickConeSegment

public PickConeSegment(Point3d origin,
                       Point3d end,
                       double spreadAngle)

Constructs a finite cone pick shape from the specified parameters.

Parameters:

origin - the origin of the cone

end - the end of the cone along the direction vector

spreadAngle - the spread angle of the cone in radians

Method Detail

set

public void set(Point3d origin,
                Point3d end,
                double spreadAngle)

Sets the parameters of this PickCone to the specified values.

Parameters:

origin - the origin of the cone

end - the end of the cone

spreadAngle - the spread angle of the cone in radians

getEnd

public void getEnd(Point3d end)

Gets the end point of this PickConeSegment.

Parameters:

end - the Point3d object into which the end point will be copied.

calcDirection

private void calcDirection()

Calculates the direction for this PickCylinderSegment, based on start and end points.

intersect

final boolean intersect(Bounds bounds,
                        Point4d pickPos)

Return true if shape intersect with bounds. The point of intersection is stored in pickPos.

Specified by:

intersect in class PickCone

Parameters:

bounds - the bounds object to check

pickPos - the location of the point of intersection (not used for method. Provided for compatibility).

transform

PickShape transform(Transform3D t3d)

Specified by:

transform in class PickShape