javax.media.j3d
Class PickConeSegment

java.lang.Object
  extended by javax.media.j3d.PickShape
      extended by javax.media.j3d.PickCone
          extended by 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


Copyright 1996-2008 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms.