fr.cnes.sirius.patrius.fieldsofview

Class RectangleField

java.lang.Object

fr.cnes.sirius.patrius.fieldsofview.RectangleField

All Implemented Interfaces:

IFieldOfView

public class RectangleField
extends Object
implements IFieldOfView

This class describes a field of view defined by a rectangle cone, to be used in "instruments" part properties. It implements the IFieldOfView interface and so provides the associated services.

Since:

1.2

Version:

$Id$

Author:

Thomas Trapier

See Also:

IFieldOfView, FieldAngularFace

Concurrency :

immutable

Constructor Summary

Constructors

Constructor and Description
RectangleField(String name, Vector3D mainDirection, Vector3D approximativeU, double angularApertureU, double angularApertureV) Constructor for a field of view defined by a rectangle cone.

Method Summary

Modifier and Type	Method and Description
double	getAngularDistance(Vector3D direction) Computes the angular distance between a vector and the border of the field.
String	getName()
Vector3D	getU() Get the U axis
Vector3D	getV() Get the V axis
Vector3D	getW() Get the W axis.
boolean	isInTheField(Vector3D direction)

Methods inherited from class java.lang.Object

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

Constructor Detail

RectangleField

public RectangleField(String name,
                      Vector3D mainDirection,
                      Vector3D approximativeU,
                      double angularApertureU,
                      double angularApertureV)

Constructor for a field of view defined by a rectangle cone.

Parameters:

name - the name of the field

mainDirection - the main direction of the rectangle cone

approximativeU - : defines the U vector of the local frame of the rectangle cone (will be corrected to be orthogonal to the main direction vector). Can't be parallel to the main direction vector.

angularApertureU - the angular aperture in U direction : must be strictly between 0 and PI

angularApertureV - the angular aperture in V direction : must be strictly between 0 and PI

Method Detail

getU

public Vector3D getU()

Get the U axis

Returns:

U axis

getV

public Vector3D getV()

Get the V axis

Returns:

V axis

getW

public Vector3D getW()

Get the W axis. This represents the direction of the cone

Returns:

W axis

getAngularDistance

public double getAngularDistance(Vector3D direction)

Computes the angular distance between a vector and the border of the field. The result is positive if the direction is in the field, negative otherwise. For some of the fields (ComplexField), that value can be approximative : see particular javadoc of each class.

Specified by:

getAngularDistance in interface IFieldOfView

Parameters:

direction - the direction vector

Returns:

the angular distance

isInTheField

public boolean isInTheField(Vector3D direction)

Specified by:

isInTheField in interface IFieldOfView

Parameters:

direction - a direction vector

Returns:

true if the direction is in the field

getName

public String getName()

Specified by:

getName in interface IFieldOfView

Returns:

the name of the field