com.luciad.ais.shape

Aviation StandardsInterface ILcdGeoPathLeg

All Superinterfaces:

Cloneable, ILcdBounded, ILcdCloneable, ILcdPoint, ILcdShape, Serializable

All Known Subinterfaces:

ILcdAirspaceSegment, ILcdEditableAirspaceSegment, ILcdEditableGeoPathLeg, ILcdEditableParachuteJumpAreaSegment, ILcdParachuteJumpAreaSegment

All Known Implementing Classes:

TLcdAirspaceSegment, TLcdGeoPathLeg, TLcdParachuteJumpAreaSegment, TLcdSubPointlistAirspaceSegment

public interface ILcdGeoPathLeg
extends ILcdPoint

An ILcdGeoPathLeg is a geometric shape defined by a point and, depending on the type of the leg, a number of other parameters. Leg types include lines, circles and polygons.

The extra parameters can be retrieved in an array of double values using the getDataSFCT() method. See below for the list of parameters associated with each of the leg types.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ARC An arc which connects the coordinates specified by the current leg to the end of the next GeoPath leg.
static int	ARC_BY_EDGE An arc specified by three points.
static int	CIRCLE_POINT A circle defined by two points.
static int	CIRCLE_RADIUS A circle defined by its center and radius.
static int	GEODESIC_LINE A geodesic line which starts at the coordinates specified by the current leg and ends at the next GeoPath leg.
static int	POINT The most basic type of GeoPath leg is simply a point, and does not specify any additional parameters.
static int	RHUMB_LINE A rhumb line which starts at the coordinates specified by the current leg and ends at the next GeoPath leg.
static int	SUB_POINT_LIST A polyline defined by two points and a pointlist.

Method Summary

Modifier and Type	Method and Description
int	getDataLength() Returns the number of parameters in the leg's data array.
void	getDataSFCT(double[] aDataSFCT) Copies the GeoPath leg's parameter list into the aDataSFCT array.
int	getType() Returns the type of this GeoPath leg.

Methods inherited from interface com.luciad.shape.ILcdPoint

cloneAs2DEditablePoint, cloneAs3DEditablePoint, equals, getCosX, getCosY, getSinX, getSinY, getTanX, getTanY, getX, getY, getZ

Methods inherited from interface com.luciad.shape.ILcdShape

contains2D, contains2D, contains3D, contains3D, getFocusPoint

Methods inherited from interface com.luciad.shape.ILcdBounded

getBounds

Methods inherited from interface com.luciad.util.ILcdCloneable

clone

Field Detail

POINT

static final int POINT

The most basic type of GeoPath leg is simply a point, and does not specify any additional parameters.

See Also:

Constant Field Values

CIRCLE_POINT

static final int CIRCLE_POINT

A circle defined by two points. The coordinates of the GeoPath leg itself specify the center of the circle. The parameter list specifies the X, Y and Z coordinates of a point on the circle's boundary.

A geo-path leg of this type cannot be combined with other geo-path legs. It must be the only leg in the path (which consequently determines a circle).

See Also:

Constant Field Values

CIRCLE_RADIUS

static final int CIRCLE_RADIUS

A circle defined by its center and radius. The coordinates of the GeoPath leg itself specify the center, and the parameter list contains the radius.

A geo-path leg of this type cannot be combined with other geo-path legs. It must be the only leg in the path (which consequently determines a circle).

See Also:

Constant Field Values

GEODESIC_LINE

static final int GEODESIC_LINE

A geodesic line which starts at the coordinates specified by the current leg and ends at the next GeoPath leg. No extra parameters are required.

See Also:

Constant Field Values

RHUMB_LINE

static final int RHUMB_LINE

A rhumb line which starts at the coordinates specified by the current leg and ends at the next GeoPath leg. No extra parameters are required.

See Also:

Constant Field Values

ARC

static final int ARC

An arc which connects the coordinates specified by the current leg to the end of the next GeoPath leg. The parameter list contains the X, Y and Z coordinates of the arc center, and a value indicating whether the arc is clockwise (value = 1.0) or counterclockwise (value = 0.0). Optionally, the parameter list is extended with a radius. Although a radius is redundant with the arc center coordinates, it can be used to detect and resolve inaccuracies in the data.

See Also:

Constant Field Values

ARC_BY_EDGE

static final int ARC_BY_EDGE

An arc specified by three points. The first point is specified by the coordinates of the current leg. The second point is the end of the next GeoPath leg, and marks the end point of the arc. The parameter list contains the X, Y and Z coordinates of the third point, which is a point through which the arc must pass.

See Also:

Constant Field Values

SUB_POINT_LIST

static final int SUB_POINT_LIST

A polyline defined by two points and a pointlist. The parameter list contains a list of X, Y and Z coordinates that represents the pointlist; the point in this list that is closest to the coordinates of the current leg is the start point of the polyline; the point that is closest to the coordinates of the next leg is the end point of the polyline.

See Also:

Constant Field Values

Method Detail

getType

int getType()

Returns the type of this GeoPath leg.

Returns:

one of the constants defined above

getDataLength

int getDataLength()

Returns the number of parameters in the leg's data array. Use getDataSFCT() to obtain the contents of the parameter list.

Returns:

the length of the leg's parameter list

getDataSFCT

void getDataSFCT(double[] aDataSFCT)

Copies the GeoPath leg's parameter list into the aDataSFCT array. The array must be sufficiently large! Use getDataLength() to determine the required size of the array.

Parameters:

aDataSFCT - will receive the parameter list of this GeoPath leg.