public class TLcdGML31AbstractCurveSegment extends TLcdFeaturedDataObject implements ILcdShape, ILcdCurve
Modifier and Type  Field and Description 

static TLcdDataProperty 
NUM_DERIVATIVE_INTERIOR_PROPERTY
Data property that maps to the
numDerivativeInterior attribute. 
static TLcdDataProperty 
NUM_DERIVATIVES_AT_END_PROPERTY
Data property that maps to the
numDerivativesAtEnd attribute. 
static TLcdDataProperty 
NUM_DERIVATIVES_AT_START_PROPERTY
Data property that maps to the
numDerivativesAtStart attribute. 
INTERPOLATION_CIRCLE_BY_3POINTS, INTERPOLATION_CIRCLE_BY_CENTERPOINT, INTERPOLATION_CIRCULARARC_BY_3POINTS, INTERPOLATION_CIRCULARARC_BY_BULGE, INTERPOLATION_CIRCULARARC_BY_CENTERPOINT, INTERPOLATION_ELLIPTICAL, INTERPOLATION_GEODESIC, INTERPOLATION_LINEAR, INTERPOLATION_MIXED, INTERPOLATION_RHUMB
Constructor and Description 

TLcdGML31AbstractCurveSegment() 
TLcdGML31AbstractCurveSegment(TLcdDataType aType) 
Modifier and Type  Method and Description 

void 
computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
Computes a point of the curve, defined by the given parameter.

boolean 
contains2D(double v,
double v1)
Checks whether this
ILcdShape contains the given point in
the 2D space. 
boolean 
contains2D(ILcdPoint aILcdPoint)
Checks whether this
ILcdShape contains the given ILcdPoint in the 2D space. 
boolean 
contains3D(double v,
double v1,
double v2)
Checks whether this
ILcdShape contains the given point in
the 3D space. 
boolean 
contains3D(ILcdPoint aILcdPoint)
Checks whether this
ILcdShape contains the given ILcdPoint in the 3D space. 
ILcdBounds 
getBounds()
Returns the
ILcdBounds by which the geometry of this ILcdBounded object
is bounded. 
ILcdPoint 
getEndPoint()
Retrieves the end point of the curve.

double 
getEndTangent2D()
Returns the angle of the curve's tangent at the end point,
in degrees counterclockwise from the direction at 3 o'clock.

ILcdPoint 
getFocusPoint()
Returns the focus point of this
ILcdShape . 
java.lang.String 
getInterpolation()
Returns the interpolation method used by this curve.

double 
getLength2D(double aParam1,
double aParam2)
Returns the length between two points of the curve,
defined by the given parameters.

int 
getLineSegmentIntersectionCount(ILcdPoint aP1,
ILcdPoint aP2)
Returns the number of intersections between this curve and a line segment
defined by the two specified points.

long 
getNumDerivativeInterior()
Returns the value of the property that maps to the
numDerivativeInterior attribute. 
long 
getNumDerivativesAtEnd()
Returns the value of the property that maps to the
numDerivativesAtEnd attribute. 
long 
getNumDerivativesAtStart()
Returns the value of the property that maps to the
numDerivativesAtStart attribute. 
ILcdPoint 
getStartPoint()
Retrieves the start point of the curve.

double 
getStartTangent2D()
Returns the angle of the curve's tangent at the start point,
in degrees counterclockwise from the direction at 3 o'clock.

double 
getTangent2D(double aParam)
Returns the angle of the curve's tangent in the point defined
by the given parameter, in degrees counterclockwise from the
direction at 3 o'clock.

void 
setNumDerivativeInterior(long aValue)
Sets the value of the property that maps to the
numDerivativeInterior attribute. 
void 
setNumDerivativesAtEnd(long aValue)
Sets the value of the property that maps to the
numDerivativesAtEnd attribute. 
void 
setNumDerivativesAtStart(long aValue)
Sets the value of the property that maps to the
numDerivativesAtStart attribute. 
canSetFeature, getFeature, getFeature, getFeatureCount, getFeaturedDescriptor, setFeature, setFeature
clone, clone, getDataType, getValue, getValue, hasValue, hasValue, setValue, setValue, toString
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
clone
public static final TLcdDataProperty NUM_DERIVATIVE_INTERIOR_PROPERTY
numDerivativeInterior
attribute.
The possible values for this property are instances of long
.public static final TLcdDataProperty NUM_DERIVATIVES_AT_END_PROPERTY
numDerivativesAtEnd
attribute.
The possible values for this property are instances of long
.public static final TLcdDataProperty NUM_DERIVATIVES_AT_START_PROPERTY
numDerivativesAtStart
attribute.
The possible values for this property are instances of long
.public TLcdGML31AbstractCurveSegment()
public TLcdGML31AbstractCurveSegment(TLcdDataType aType)
public ILcdPoint getStartPoint()
ILcdCurve
This is equivalent to computePointSFCT(0)
.
getStartPoint
in interface ILcdCurve
public ILcdPoint getEndPoint()
ILcdCurve
This is equivalent to computePointSFCT(1)
.
getEndPoint
in interface ILcdCurve
public double getStartTangent2D()
ILcdCurve
The tangent orientation is from the start point towards the rest of the shape.
This is the same as getTangent2D(0)
.
getStartTangent2D
in interface ILcdCurve
public double getEndTangent2D()
ILcdCurve
The tangent orientation is from the end point, away from the curve before it.
This is the same as getTangent2D(1)
.
getEndTangent2D
in interface ILcdCurve
public double getTangent2D(double aParam)
ILcdCurve
The tangent orientation is from the point at parameter aParam
towards the rest of the shape.
ILcdCurve.getStartTangent2D()
.ILcdCurve.getEndTangent2D()
.getTangent2D
in interface ILcdCurve
aParam
 a value of the closed interval [0,1]public double getLength2D(double aParam1, double aParam2)
ILcdCurve
aParam1 == aParam2
, the length is 0.aParam1 == 0 and aParam2 == 1
, the length is the whole length of the curve.aParam1 > aParam2
, the length is (aParam1 to 1
) + (0 to aParam2
).getLength2D
in interface ILcdCurve
aParam1
 a value of the closed interval [0,1]aParam2
 a value of the closed interval [0,1]public void computePointSFCT(double aParam, ILcd3DEditablePoint aPointSFCT)
ILcdCurve
ILcdCurve.getStartPoint()
.ILcdCurve.getEndPoint()
.computePointSFCT
in interface ILcdCurve
aParam
 a value of the closed interval [0,1]aPointSFCT
 the point to store the computed curve point inpublic java.lang.String getInterpolation()
ILcdCurve
A set of predefined constants are defined in this interface,
which are used by the default ILcdCurve
implementations
provided by LuciadLightspeed.
Custom implementations can define their own constants, and use them to interpret the interpolation of the curve.
getInterpolation
in interface ILcdCurve
public int getLineSegmentIntersectionCount(ILcdPoint aP1, ILcdPoint aP2)
ILcdCurve
This information can be used to perform containment calculations, if this curve is closed or if this curve is part of a composite closed curve. By determining the number of intersections between this curve and a line segment starting from a given point in a fixed direction, one can determine whether a point is located within the closed curve by using the evenodd rule.
getLineSegmentIntersectionCount
in interface ILcdCurve
aP1
 the first point of the line segmentaP2
 the second point of the line segmentpublic ILcdPoint getFocusPoint()
ILcdShape
ILcdShape
.getFocusPoint
in interface ILcdShape
ILcdShape
.public boolean contains2D(ILcdPoint aILcdPoint)
ILcdShape
ILcdShape
contains the given ILcdPoint
in the 2D space.
Only the first two dimensions of the ILcdShape
and the ILcdPoint
are considered.contains2D
in interface ILcdShape
aILcdPoint
 the ILcdPoint
to test.ILcdShape.contains2D(double, double)
public boolean contains2D(double v, double v1)
ILcdShape
ILcdShape
contains the given point in
the 2D space. Only the first two dimensions of the ILcdShape
are considered.contains2D
in interface ILcdShape
v
 the x coordinate of the point.v1
 the y coordinate of the point.public boolean contains3D(ILcdPoint aILcdPoint)
ILcdShape
ILcdShape
contains the given ILcdPoint
in the 3D space.contains3D
in interface ILcdShape
aILcdPoint
 the ILcdPoint
to test.ILcdShape.contains3D(double, double, double)
public boolean contains3D(double v, double v1, double v2)
ILcdShape
ILcdShape
contains the given point in
the 3D space.contains3D
in interface ILcdShape
v
 the x coordinate of the point.v1
 the y coordinate of the point.v2
 the z coordinate of the point.public ILcdBounds getBounds()
ILcdBounded
ILcdBounds
by which the geometry of this ILcdBounded
object
is bounded.
If the geometry does not allow retrieving valid bounds (for example a polyline with 0 points)
the return value is unspecified.
It is highly recommended to return an undefined
bounds.
You can create undefined bounds using the default constructors
of TLcdLonLatBounds
or TLcdXYBounds
.
getBounds
in interface ILcdBounded
ILcdBounds
by which the geometry of this ILcdBounded
object
is bounded.public long getNumDerivativeInterior()
numDerivativeInterior
attribute.
The attribute "numDerivativesInterior" specifies the type of continuity that is guaranteed interior to the curve. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
NUM_DERIVATIVE_INTERIOR_PROPERTY
property.public void setNumDerivativeInterior(long aValue)
numDerivativeInterior
attribute.
The attribute "numDerivativesInterior" specifies the type of continuity that is guaranteed interior to the curve. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
aValue
 the value to set for the NUM_DERIVATIVE_INTERIOR_PROPERTY
property.public long getNumDerivativesAtEnd()
numDerivativesAtEnd
attribute.
The attribute "numDerivativesAtEnd" specifies the type of continuity between this curve segment and its successor. If this is the last curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
NUM_DERIVATIVES_AT_END_PROPERTY
property.public void setNumDerivativesAtEnd(long aValue)
numDerivativesAtEnd
attribute.
The attribute "numDerivativesAtEnd" specifies the type of continuity between this curve segment and its successor. If this is the last curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
aValue
 the value to set for the NUM_DERIVATIVES_AT_END_PROPERTY
property.public long getNumDerivativesAtStart()
numDerivativesAtStart
attribute.
The attribute "numDerivativesAtStart" specifies the type of continuity between this curve segment and its predecessor. If this is the first curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
NUM_DERIVATIVES_AT_START_PROPERTY
property.public void setNumDerivativesAtStart(long aValue)
numDerivativesAtStart
attribute.
The attribute "numDerivativesAtStart" specifies the type of continuity between this curve segment and its predecessor. If this is the first curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity. NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
aValue
 the value to set for the NUM_DERIVATIVES_AT_START_PROPERTY
property.