fr.ign.cogit.geoxygene.spatial.coordgeom

Class GM_Arc

Object

GM_Object

GM_Primitive

GM_OrientablePrimitive

GM_OrientableCurve

GM_Curve

GM_CurveSegment

GM_Arc

All Implemented Interfaces:

IArc, IArcString, ICurveSegment, IGenericCurve, ICurve, IOrientableCurve, IOrientablePrimitive, IPrimitive, IGeometry, Cloneable

Direct Known Subclasses:

GM_Circle

public class GM_Arc
extends GM_CurveSegment
implements IArc

Un segment d'arc de cercle il est défini par 3 points.

Author:

Thierry Badard, Arnaud Braun, Julien Gaffuri, Julien Perret

Field Summary

Fields inherited from class GM_Curve

segment

Fields inherited from class GM_OrientableCurve

primitive

Fields inherited from class GM_OrientablePrimitive

orientation

Fields inherited from class GM_Object

CRS

Constructor Summary

Constructors

Constructor and Description
GM_Arc(IPosition startPoint, IPosition endPoint, double offset) cree un arc de cercle a partir de deux point et la distance du cercle au milieu du segment quand la distance est positive, l'arc de cercle est a gauche, et à droite sinon (on ne suit pas la norme, qui traite le cas 3D)
GM_Arc(IPosition startPoint, IPosition midPoint, IPosition endPoint) cree un arc de cercle a partir de trois points

Method Summary

Modifier and Type	Method and Description
boolean	contains(IGeometry geom) Predicat topologique sur la relation de contenance (avec JTS).
IDirectPositionList	coord() Renvoie TRUE si la frontière est vide.
double	delta()
double	endOfArc()
IDirectPosition	getCenter()
IPosition	getEndPoint()
String	getInterpolation() Mécanisme d'interpolation, selon une liste de codes.
IPosition	getMidPoint()
int	getNumArc()
double	getRadius()
IPosition	getStartPoint()
IGeometry	intersection(IGeometry geom) Intersection avec l'objet passé en paramètre (avec JTS).
double	midOfArc()
ICurveSegment	reverse() Renvoie un GM_CurveSegment de sens opposé.
void	setEndPoint(IPosition endPoint)
void	setMidPoint(IPosition midPoint)
void	setStartPoint(IPosition startPoint)
double	startOfArc()

Methods inherited from class GM_CurveSegment

getNumDerivativeAtEnd, getNumDerivativeInterior, getNumDerivativesAtStart

Methods inherited from class GM_Curve

addSegment, addSegment, addSegment, addSegmentTry, asLineString, asLineString, clearSegments, constrParam, endConstrParam, endParam, endPoint, getSegment, getSegment, length, length, param, paramForPoint, removeSegment, removeSegment, setSegment, sizeSegment, startConstrParam, startParam, startPoint, validate

Methods inherited from class GM_OrientableCurve

boundary, getNegative, getPositive, getPrimitive

Methods inherited from class GM_OrientablePrimitive

getOrientation

Methods inherited from class GM_Primitive

getComplex, sizeComplex

Methods inherited from class GM_Object

area, buffer, buffer, buffer, buffer, centroid, clone, convexHull, coordinateDimension, crosses, difference, dimension, disjoint, distance, envelope, equals, equals, equalsExact, equalsExact, exportImage, exportSvgz, exportWkt, getCRS, getEnvelope, intersects, intersectsStrictement, isEmpty, isLineString, isMultiCurve, isMultiSurface, isPoint, isPolygon, isSimple, isValid, isWithinDistance, length, mbRegion, numPoints, overlaps, relate, setCRS, symmetricDifference, toString, touches, translate, union, within

Methods inherited from class Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface IArcString

coord, getNumArc, reverse

Methods inherited from interface ICurveSegment

getInterpolation, getNumDerivativeAtEnd, getNumDerivativeInterior, getNumDerivativesAtStart

Methods inherited from interface ICurve

addSegment, addSegment, addSegment, addSegmentTry, asLineString, clearSegments, endPoint, getSegment, getSegment, removeSegment, removeSegment, setSegment, sizeSegment, startPoint, validate

Methods inherited from interface IOrientableCurve

boundary, getNegative, getPositive, getPrimitive

Methods inherited from interface IOrientablePrimitive

getOrientation

Methods inherited from interface IPrimitive

getComplex, sizeComplex

Methods inherited from interface IGeometry

area, buffer, buffer, buffer, centroid, clone, convexHull, coordinateDimension, crosses, difference, dimension, disjoint, distance, envelope, equals, equalsExact, equalsExact, exportWkt, getCRS, getEnvelope, intersects, intersectsStrictement, isEmpty, isLineString, isMultiCurve, isMultiSurface, isPoint, isPolygon, isSimple, isValid, isWithinDistance, length, mbRegion, numPoints, overlaps, relate, setCRS, symmetricDifference, toString, touches, translate, union, within

Methods inherited from interface IGenericCurve

asLineString, constrParam, endConstrParam, endParam, length, length, param, paramForPoint, startConstrParam, startParam

Constructor Detail

GM_Arc

public GM_Arc(IPosition startPoint,
              IPosition midPoint,
              IPosition endPoint)

cree un arc de cercle a partir de trois points

Parameters:

startPoint -

midPoint -

endPoint -

GM_Arc

public GM_Arc(IPosition startPoint,
              IPosition endPoint,
              double offset)

cree un arc de cercle a partir de deux point et la distance du cercle au milieu du segment quand la distance est positive, l'arc de cercle est a gauche, et à droite sinon (on ne suit pas la norme, qui traite le cas 3D)

Parameters:

startPoint -

endPoint -

offset -

Method Detail

getStartPoint

public IPosition getStartPoint()

Specified by:

getStartPoint in interface IArc

setStartPoint

public void setStartPoint(IPosition startPoint)

Specified by:

setStartPoint in interface IArc

getMidPoint

public IPosition getMidPoint()

Specified by:

getMidPoint in interface IArc

setMidPoint

public void setMidPoint(IPosition midPoint)

Specified by:

setMidPoint in interface IArc

getEndPoint

public IPosition getEndPoint()

Specified by:

getEndPoint in interface IArc

setEndPoint

public void setEndPoint(IPosition endPoint)

Specified by:

setEndPoint in interface IArc

getCenter

public IDirectPosition getCenter()

Specified by:

getCenter in interface IArc

getRadius

public double getRadius()

Specified by:

getRadius in interface IArc

startOfArc

public double startOfArc()

Specified by:

startOfArc in interface IArc

Returns:

the angle, in radian, within [-Pi, Pi], between the [O, x] axis and the line [O, startpoint]

endOfArc

public double endOfArc()

Specified by:

endOfArc in interface IArc

Returns:

the angle, in radian, within [-Pi, Pi], between the [O, x] axis and the line [O, endpoint]

midOfArc

public double midOfArc()

Returns:

the angle, in radian, within [-Pi, Pi], between the [O, x] axis and the line [O, midpoint]

delta

public double delta()

Specified by:

delta in interface IArc

Returns:

the angle value of the arc, within [-2Pi, 2Pi]

intersection

public IGeometry intersection(IGeometry geom)

Description copied from interface: IGeometry

Intersection avec l'objet passé en paramètre (avec JTS). Renvoie un GM_Aggregate vide si les objets sont disjoints.

Specified by:

intersection in interface IArc

Specified by:

intersection in interface IGeometry

Overrides:

intersection in class GM_Object

contains

public boolean contains(IGeometry geom)

Description copied from interface: IGeometry

Predicat topologique sur la relation de contenance (avec JTS). Returns true if geom.within(this) returns true.

Specified by:

contains in interface IArc

Specified by:

contains in interface IGeometry

Overrides:

contains in class GM_Object

coord

public IDirectPositionList coord()

Description copied from class: GM_Object

Renvoie TRUE si la frontière est vide.

Specified by:

coord in interface IArcString

Specified by:

coord in interface ICurve

Specified by:

coord in interface IOrientableCurve

Specified by:

coord in interface IGeometry

Overrides:

coord in class GM_Curve

reverse

public ICurveSegment reverse()

Description copied from interface: ICurveSegment

Renvoie un GM_CurveSegment de sens opposé. Méthode abstraite implémentée dans les sous-classes.

Specified by:

reverse in interface IArcString

Specified by:

reverse in interface ICurveSegment

Specified by:

reverse in class GM_CurveSegment

getNumArc

public int getNumArc()

Specified by:

getNumArc in interface IArcString

getInterpolation

public String getInterpolation()

Description copied from class: GM_CurveSegment

Mécanisme d'interpolation, selon une liste de codes. Vaut "linear" par défaut.

La liste de codes est la suivante : {linear, geodesic, circularArc3Points, circularArc2PointsWithBulge, elliptical, clothoid, conic, polynomialSpline, cubicSpline, rationalSpline}.

Specified by:

getInterpolation in interface ICurveSegment

Specified by:

getInterpolation in class GM_CurveSegment