svn-gvsig-desktop / tags / v2_0_0_Build_2055 / libraries / libFMap_geometries / src / org / gvsig / fmap / geom / Geometry.java @ 38965
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {Iver T.I.} {Task}
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*/
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package org.gvsig.fmap.geom; |
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import java.awt.Shape; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.PathIterator; |
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import java.awt.geom.Rectangle2D; |
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import java.io.Serializable; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.fmap.geom.handler.Handler; |
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import org.gvsig.fmap.geom.operation.GeometryOperationContext; |
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import org.gvsig.fmap.geom.operation.GeometryOperationException; |
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import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.geom.primitive.GeneralPathX; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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/**
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* <p>
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* This interface is equivalent to the GM_Object specified in <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012"
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* >ISO 19107</a>. It is the root class of the geometric object taxonomy and
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* supports interfaces common to all geographically referenced geometric
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* objects.
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* </p>
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* <p>
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* Geometry instances are sets of direct positions in a particular coordinate
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* reference system. A Geometry can be regarded as an infinite set of points
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* that satisfies the set operation interfaces for a set of direct positions.
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* </p>
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* <p>
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* A geometric object shall be a combination of a coordinate geometry and a
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* coordinate reference system. In all of the operations, all geometric
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* calculations shall be done in the coordinate reference system of the first
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* geometric object accessed, which is normally the object whose operation is
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* being invoked. Returned objects shall be in the coordinate reference system
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* in which the calculations are done unless explicitly stated otherwise.
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* </p>
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* <p>
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* This class extends of the {@link Shape} class by historical reasons but this
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* inheritance will disappear in future versions.
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* </p>
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* @see <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012"
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* >ISO 19107< /a>
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*/
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public interface Geometry extends Shape, Serializable, Comparable { |
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/**
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* Predefined geometry types in the model.
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*/
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public interface TYPES { |
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/**
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* Any geometry.
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*/
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public final static int GEOMETRY = 0; |
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/**
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* A geometric element that has zero dimensions and a location
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* determinable by an ordered set of coordinates.
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*/
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public final static int POINT = 1; |
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/**
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* A straight or curved geometric element that is generated by a moving
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* point and that has extension only along the path of the point.
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*/
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public final static int CURVE = 2; |
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/**
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* A closed plane figure bounded by straight lines.
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*/
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public final static int SURFACE = 3; |
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/**
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* Solids in 3D.
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*/
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public final static int SOLID = 4; |
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/**
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* A set that can contain points, lines and polygons. This is usual in
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* <i>CAD</i> layers <i>(dxf, dgn, dwg)</i>.
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*/
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public final static int AGGREGATE = 6; |
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/**
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* A set of points.
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*/
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public final static int MULTIPOINT = 7; |
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/**
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* A set of lines.
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*/
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public final static int MULTICURVE = 8; |
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/**
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* A set of polygons.
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*/
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public final static int MULTISURFACE = 9; |
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/**
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* A set of solids.
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*/
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public final static int MULTISOLID = 10; |
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/**
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* A closed plane curve every point of which is equidistant from a fixed
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* point within the curve.
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*/
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public final static int CIRCLE = 11; |
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/**
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* A continuous portion (as of a circle or ellipse) of a curved line.
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*/
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public final static int ARC = 12; |
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/**
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* A closed plane curve generated by a point moving in such a way that
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* the sums of its distances from two fixed points is a constant : a
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* plane section of a right circular cone that is a closed curve.
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*/
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public final static int ELLIPSE = 13; |
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public final static int SPLINE = 14; |
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public final static int ELLIPTICARC = 15; |
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/**
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* NO DATA geometry.
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*/
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public final static int NULL = 16; |
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} |
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public interface DIMENSIONS { |
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public final static int X = 0; |
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public final static int Y = 1; |
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public final static int Z = 2; |
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} |
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/**
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* The subtype of a geometry is related with the dimension of the geometry,
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* that is a combination between the spatial dimension (2D, 2ZD, 3D) and the
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* M coordinate or "measure".
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*
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* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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*/
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public interface SUBTYPES { |
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/**
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* Geometries with two dimensions.
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*/
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public final static int GEOM2D = 0; |
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/**
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* Geometries with three dimensions.
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*/
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public final static int GEOM3D = 1; |
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/**
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* Geometries with two dimensions and with the M coordinate.
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*/
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public final static int GEOM2DM = 2; |
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/**
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* Geometries with three dimensions and with the M coordinate.
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*/
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public final static int GEOM3DM = 3; |
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/**
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* The subtype us unknown.
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*/
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public final static int UNKNOWN = 4; |
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} |
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/**
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* Initial value for new geometry types (it must not overlap with the basic
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* ones defined in TYPES).
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*/
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public static final int EXTENDED_GEOMTYPE_OFFSET = 17; |
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/**
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* Initial value for new geometry subtypes (it must not overlap with the
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* basic ones defined in SUBTYPES).
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*/
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public static final int EXTENDED_GEOMSUBTYPE_OFFSET = 6; |
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public interface OPERATIONS { |
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public final static String CONVERTTOWKT = "toWKT"; |
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public final static String CONVERTTOWKB = "toWKB"; |
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public final static String BUFFER = "buffer"; |
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public final static String DISTANCE = "Distance"; |
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public final static String CONTAINS = "Contains"; |
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public final static String OVERLAPS = "OVERLAPS"; |
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public final static String CONVEXHULL = "ConvexHull"; |
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public final static String COVERS = "Covers"; |
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public final static String CROSSES = "Crosses"; |
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public final static String DIFFERENCE = "Difference"; |
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public final static String DISJOIN = "Disjoin"; |
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public final static String INTERSECTION = "Intersaction"; |
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public final static String INTERSECTS = "Intersects"; |
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public final static String TOUCHES = "Touches"; |
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public final static String UNION = "Union"; |
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public final static String WITHIN = "Within"; |
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public final static String COVEREDBY = "CoveredBy"; |
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} |
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public static int BEST = 0; |
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/**
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* North.
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*/
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public static int N = 1; |
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/**
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* North - East.
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*/
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public static int NE = 2; |
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/**
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* East.
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*/
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public static int E = 3; |
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/**
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* South - East.
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*/
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public static int SE = 4; |
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/**
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* South.
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*/
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public static int S = 5; |
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/**
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* South - West.
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*/
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public static int SW = 6; |
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/**
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* West.
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*/
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public static int W = 7; |
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/**
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* North - West.
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*/
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public static int NW = 8; |
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public static int SELECTHANDLER = 0; |
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public static int STRETCHINGHANDLER = 1; |
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/**
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* If this geometry is a predefined interface then this method returns one
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* of {@link Geometry.TYPES} contants.<br>
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* If this geometry is an extended type then this method returns a runtime
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* constant that identifies its type. By convention this value is stored in
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* a constant called .CODE within the geometry class, for instance:
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* Point2D.CODE.
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*
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* @return If this geometry is a predefined interface then one of
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* {@link Geometry.TYPES} or a runtime constant if it is an extended
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* type.
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*/
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public int getType(); |
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/**
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* Creates a clone of this geometry.
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*
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* @return A clone of this geometry.
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*/
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public Geometry cloneGeometry();
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/**
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* Returns true if this geometry intersects the rectangle passed as
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* parameter.
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*
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* @param r
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* Rectangle.
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*
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* @return True, if <code>this</code> intersects <code>r</code>.
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*/
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public boolean intersects(Rectangle2D r); |
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/**
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* Used by the drawing strategies to quickly test whether this geometry
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* intersects with the visible rectangle.
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*
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* @param x
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* The minimum X coordinate.
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* @param y
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* The minimum Y coordinate.
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* @param w
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* The width of the envelope.
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* @param h
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* The height of the envelope.
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* @return true if <code>this</code> intersects the rectangle defined by the
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* parameters.
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*/
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public boolean fastIntersects(double x, double y, double w, double h); |
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/**
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* Returns this geometry's boundary rectangle.
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*
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* @deprecated use getEnvelope.
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* @return Boundary rectangle.
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*/
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public Rectangle2D getBounds2D(); |
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/**
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* <p>
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* Returns the minimum bounding box for this Geometry. This shall be the
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* coordinate region spanning the minimum and maximum value for each
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* ordinate taken on by DirectPositions in this Geometry. The simplest
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* representation for an envelope consists of two DirectPositions, the first
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* one containing all the minimums for each ordinate, and second one
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* containing all the maximums.
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* </p>
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*
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* @return The minimum bounding box for this Geometry.
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*/
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public Envelope getEnvelope();
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/**
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* Reprojects this geometry by the coordinate transformer passed as
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* parameter.
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*
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* @param ct
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* Coordinate Transformer.
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*/
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public void reProject(ICoordTrans ct); |
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/**
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* If applies an affine transformation and returns the GeneralPathXIterator
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* with this geometry's information.
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*
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* @param at
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* The transformation to apply.
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* @return The GeneralPathXIterator with this geometry's information.
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*/
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public PathIterator getPathIterator(AffineTransform at); |
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/**
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* It returns the handlers of the geometry, these they can be of two types
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* is straightening and of selection.
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*
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* @param type
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* Type of handlers.
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*
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* @return The handlers.
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*/
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public Handler[] getHandlers(int type); |
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/**
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* It applies an affine transformation to the geometry.
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*
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* @param at
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* The transformation to apply.
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*/
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public void transform(AffineTransform at); |
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/**
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* If applies an affine transformation and returns the GeneralPathXIterator
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* with this geometry's information.
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*
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* @param at
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* The affine transformation.
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* @param flatness
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*
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* @return The GeneralPathXIterator with this geometry's information.
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*/
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PathIterator getPathIterator(AffineTransform at, double flatness); |
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/**
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* Useful to have the real shape behind the scenes. May be uses to edit it
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* knowing it it is a Circle, Ellipse, etc.
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*
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* @return The awt shape
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*/
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public Shape getInternalShape(); |
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/**
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* Returns the largest number n such that each direct position in a
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* geometric set can be associated with a subset that has the direct
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* position in its interior and is similar (isomorphic) to Rn, Euclidean
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* n-space.
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*
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* @return The dimension.
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*/
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public int getDimension(); |
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/**
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* Returns <code>true</code> if this Geometry has no interior point of
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* self-intersection or self-tangency. In mathematical formalisms, this
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* means that every point in the interior of the object must have a metric
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* neighborhood whose intersection with the object is isomorphic to an
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* n-sphere, where n is the dimension of this Geometry.
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*
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* @return If the geometry is simple.
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*/
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public boolean isSimple(); |
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/**
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* Invokes a geometry operation given its index and context.
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*
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* @param index
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* Unique index of the operation. Operation code.
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* @param ctx
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* The context of the geometry operation.
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* @return Object returned by the operation.
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* @throws GeometryOperationNotSupportedException
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* It is thrown when the operation has been not registered for
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* this geometry.
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* @throws GeometryOperationException
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* It is thrown when there is an error executing the operation.
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*/
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public Object invokeOperation(int index, GeometryOperationContext ctx) |
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throws GeometryOperationNotSupportedException,
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GeometryOperationException; |
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|
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/**
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* Invokes a geometry operation given its name and context.
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*
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* @param opName
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* Operation name.
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* @param ctx
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* The context of the geometry operation.
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* @return Object returned by the operation.
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* @throws GeometryOperationNotSupportedException
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* It is thrown when the operation has been not registered for
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* this geometry.
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* @throws GeometryOperationException
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* It is thrown when there is an error executing the operation.
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*/
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public Object invokeOperation(String opName, GeometryOperationContext ctx) |
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throws GeometryOperationNotSupportedException,
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GeometryOperationException; |
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|
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/**
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* Instance of the GeometryType associated to this geometry.
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*
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* @return The geometry type.
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*/
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public GeometryType getGeometryType();
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|
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/**
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* Get GeneralPathIterator, to do registered operations to it.
|
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*
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* @return The GeneralPathX.
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*/
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public GeneralPathX getGeneralPath();
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|
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/**
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* Return a byte array with the equivalent in WKB format of the Geometry.
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*
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* Utility method to wrap the invocation to the operation
|
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* {@link OPERATIONS#CONVERTTOWKB}.
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*
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* @return the WKB version of the geometry
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*/
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public byte[] convertToWKB() throws GeometryOperationNotSupportedException, |
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GeometryOperationException; |
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|
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/**
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* Return a string with the equivalent in WKT format of the Geometry.
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*
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* This is a utility method to wrap the invocation to the operation
|
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* {@link OPERATIONS#CONVERTTOWKT}.
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*
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* @return the WKT version of the geometry.
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*
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* @throws GeometryOperationNotSupportedException
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* @throws GeometryOperationException
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*/
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public String convertToWKT() throws GeometryOperationNotSupportedException, |
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GeometryOperationException; |
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|
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/**
|
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* Computes a buffer area around this geometry having the given width
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*
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* This is a utility method to wrap the invocation to the operation
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* {@link OPERATIONS#BUFFER}.
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*
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* @param distance
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* the width of the buffer
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*
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* @return a new Geometry with the computed buffer.
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*
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* @throws GeometryOperationNotSupportedException
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* @throws GeometryOperationException
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*/
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public Geometry buffer(double distance) |
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throws GeometryOperationNotSupportedException,
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GeometryOperationException; |
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|
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/**
|
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* Tests whether this geometry contains the specified geometry.
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*
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* This is a utility method to wrap the invocation to the operation
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* {@link OPERATIONS#CONTAINS}.
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*
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* @param geometry
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* the Geometry with which to compare this Geometry
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*
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* @return if this Geometry contains the specified geometry
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*
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* @throws GeometryOperationNotSupportedException
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* @throws GeometryOperationException
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*/
|
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public boolean contains(Geometry geometry) |
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throws GeometryOperationNotSupportedException,
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GeometryOperationException; |
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|
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/**
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* Returns the minimum distance between this Geometry and the specified
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* geometry.
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*
|
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* This is a utility method to wrap the invocation to the operation
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* {@link OPERATIONS#DISTANCE}.
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*
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* @param geometry
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* the Geometry from which to compute the distance
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*
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* @return the distance between the geometries
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*
|
552 |
* @throws GeometryOperationNotSupportedException
|
553 |
* @throws GeometryOperationException
|
554 |
*/
|
555 |
public double distance(Geometry geometry) |
556 |
throws GeometryOperationNotSupportedException,
|
557 |
GeometryOperationException; |
558 |
|
559 |
/**
|
560 |
* Tests whether this geometry overlaps the specified geometry.
|
561 |
*
|
562 |
* This is a utility method to wrap the invocation to the operation
|
563 |
* {@link OPERATIONS#OVERLAPS}.
|
564 |
*
|
565 |
* @param geometry
|
566 |
* the Geometry with which to compare this Geometry
|
567 |
*
|
568 |
* @return true if the two geometries overlap.
|
569 |
*
|
570 |
* @throws GeometryOperationNotSupportedException
|
571 |
* @throws GeometryOperationException
|
572 |
*/
|
573 |
public boolean overlaps(Geometry geometry) |
574 |
throws GeometryOperationNotSupportedException,
|
575 |
GeometryOperationException; |
576 |
|
577 |
public Geometry convexHull() throws GeometryOperationNotSupportedException, |
578 |
GeometryOperationException; |
579 |
|
580 |
public boolean coveredBy(Geometry geometry) |
581 |
throws GeometryOperationNotSupportedException,
|
582 |
GeometryOperationException; |
583 |
|
584 |
public boolean crosses(Geometry geometry) |
585 |
throws GeometryOperationNotSupportedException,
|
586 |
GeometryOperationException; |
587 |
|
588 |
public Geometry difference(Geometry other)
|
589 |
throws GeometryOperationNotSupportedException,
|
590 |
GeometryOperationException; |
591 |
|
592 |
public boolean disjoint(Geometry geometry) |
593 |
throws GeometryOperationNotSupportedException,
|
594 |
GeometryOperationException; |
595 |
|
596 |
public Geometry intersection(Geometry other)
|
597 |
throws GeometryOperationNotSupportedException,
|
598 |
GeometryOperationException; |
599 |
|
600 |
public boolean intersects(Geometry geometry) |
601 |
throws GeometryOperationNotSupportedException,
|
602 |
GeometryOperationException; |
603 |
|
604 |
public boolean touches(Geometry geometry) |
605 |
throws GeometryOperationNotSupportedException,
|
606 |
GeometryOperationException; |
607 |
|
608 |
public Geometry union(Geometry other)
|
609 |
throws GeometryOperationNotSupportedException,
|
610 |
GeometryOperationException; |
611 |
|
612 |
public boolean within(Geometry geometry) |
613 |
throws GeometryOperationNotSupportedException,
|
614 |
GeometryOperationException; |
615 |
|
616 |
public Point centroid() throws GeometryOperationNotSupportedException, GeometryOperationException; |
617 |
|
618 |
/**
|
619 |
* This method returns a point which is inside the geometry.
|
620 |
* This is useful for mathematical purposes but it is very unlikely
|
621 |
* to be a suitable place for a label, for example.
|
622 |
*
|
623 |
*
|
624 |
* @return an interior point
|
625 |
* @throws GeometryOperationNotSupportedException
|
626 |
* @throws GeometryOperationException
|
627 |
*/
|
628 |
public Point getInteriorPoint() throws GeometryOperationNotSupportedException, GeometryOperationException; |
629 |
|
630 |
public double area() throws GeometryOperationNotSupportedException, GeometryOperationException; |
631 |
|
632 |
public double perimeter() throws GeometryOperationNotSupportedException, GeometryOperationException; |
633 |
|
634 |
/**
|
635 |
* @return the awt shape used to display the geometry. It
|
636 |
* applies a tranformation before to return the coordinates
|
637 |
* of the shape
|
638 |
* @deprecated this class inherits of {@link Shape} by historical
|
639 |
* reasons. This method has been added just to control the usage of
|
640 |
* the {@link Shape} class but it will removed in a future.
|
641 |
*/
|
642 |
public Shape getShape(AffineTransform affineTransform); |
643 |
|
644 |
/**
|
645 |
* @return the awt shape used to display the geometry.
|
646 |
* @deprecated this class inherits of {@link Shape} by historical
|
647 |
* reasons. This method has been added just to control the usage of
|
648 |
* the {@link Shape} class but it will removed in a future.
|
649 |
*/
|
650 |
public Shape getShape(); |
651 |
} |