Package com.luciad.geometry.topology

Interface ILcd2DBinaryTopology

All Known Subinterfaces:

ILcd2DEllipsoidalBinaryTopology

All Known Implementing Classes:

ALcd2DBasicBinaryTopology, ALcd2DBasicBinaryTopologyMultiShape, TLcdCartesianBasicBinaryTopology, TLcdEllipsoidalBasicBinaryTopology, TLcdSphericalBasicBinaryTopology

public interface ILcd2DBinaryTopology

This interface defines binary topology relations on ILcdShapes.

Since:

1.0

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CONTAIN	Constant to be used to indicate the operation to be performed is to check whether the first shape contains the second shape.
static final int	INSIDE	Constant to be used to indicate the operation to be performed is to check whether the first shape is inside the second shape.
static final int	INTERACT	Topology relation constant INTERACT Two ILcdShape objects INTERACT if and only if there is some overlap meaning they have at least one point in common.
static final int	LINE_INTERSECT	Constant to be used to indicate the operation to be performed is to check whether the first shape boundary intersects the second shape boundary.

Method Summary

Modifier and Type	Method	Description
boolean	checkTopology(ILcdShape aS1, ILcdShape aS2, int aRelation)	Returns true if and only if the binary topology relation aRelation holds true on aS1 and aS2.

Field Details

INTERACT

static final int INTERACT

Topology relation constant INTERACT Two ILcdShape objects INTERACT if and only if there is some overlap meaning they have at least one point in common.

The red shapes interact with the respective blue shapes.

See Also:

• Constant Field Values

CONTAIN

static final int CONTAIN

Constant to be used to indicate the operation to be performed is to check whether the first shape contains the second shape. This is the inverse of the INSIDE operation.

This is a more fine-grained check than the INTERACT check. If this check returns true, the INTERACT check will also return true.

The red shape contains the blue shape.

See Also:

• Constant Field Values

INSIDE

static final int INSIDE

Constant to be used to indicate the operation to be performed is to check whether the first shape is inside the second shape. This is the inverse of the CONTAIN operation.

This is a more fine-grained check than the INTERACT check. If this check returns true, the INTERACT check will also return true.

The red shape is inside the blue shape.

See Also:

• Constant Field Values

LINE_INTERSECT

static final int LINE_INTERSECT

Constant to be used to indicate the operation to be performed is to check whether the first shape boundary intersects the second shape boundary.

This is a more fine-grained check than the INTERACT check. If this check returns true, the INTERACT check will also return true.

The red shapes line intersect the respective blue shapes.

See Also:

• Constant Field Values

Method Details

checkTopology

boolean checkTopology(ILcdShape aS1,
 ILcdShape aS2,
 int aRelation)

Returns true if and only if the binary topology relation aRelation holds true on aS1 and aS2.

Parameters:

aS1 - first shape

aS2 - second shape

aRelation - relation to be checked upon. Should be one of the constants in this interface (INTERACT, CONTAIN, INSIDE, LINE_INTERSECT).

Returns:

true if and only if the binary topology relation aRelation holds true on aS1 and aS2.