| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.fmap.geom;

import java.util.List;

import org.gvsig.fmap.geom.aggregate.MultiCurve;

import org.gvsig.fmap.geom.aggregate.MultiSurface;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.fmap.geom.operation.GeometryOperation;

import org.gvsig.fmap.geom.operation.GeometryOperationContext;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.geom.primitive.Curve;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.geom.primitive.GeneralPathX;

import org.gvsig.fmap.geom.primitive.NullGeometry;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.fmap.geom.primitive.Surface;

import org.gvsig.fmap.geom.type.GeometryType;

import org.gvsig.fmap.geom.type.GeometryTypeNotSupportedException;

import org.gvsig.fmap.geom.type.GeometryTypeNotValidException;

/**

 * This singleton provides a centralized access to gvSIG's Geometry Model.

 * Its responsibilities are:<br>

 * 

 * <ul>

 * <li>Offering a set of convenient methods for registering and retrieving

 * geometry types.

 * <li>Offering a set of convenient methods for registering and retrieving

 * geometry operations associated to one or more geometry types.

 * <li>Offering a set of convenient methods for registering and retrieving new

 * geometries.

 * </ul>

 * 

 * @author jiyarza

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public interface GeometryManager {

    public interface OPERATIONS {

        public final static String FROMWKT = "FromWKT";

        public final static String FROMWKB = "FromWKB";

    }

    /**

     * <p>

     * Registers a GeometryOperation associated to a GeometryType. Returns an

     * unique index that is used later to identify and invoke the operation.

     * </p>

     * <p>

     * By convention this index should be in a final and static variable in the

     * class that implements the operation. The value of this variable must be

     * set using the method

     * {@link GeometryManager#getGeometryOperationCode(String)}:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param geomOpName

     *            Operation's unique name

     * @param geomOp

     *            Specific GeometryOperation's instance implementing this

     *            operation

     * @param geomType

     *            GeometryType instance to which this operation should be

     *            associated

     * @return Index assigned to this operation. This index is used later to

     *         access the operation.

     * 

     */

    public int registerGeometryOperation(String geomOpName,

        GeometryOperation geomOp, GeometryType geomType);

    /**

     * <p>

     * Registers a GeometryOperation that is common for all GeometryType

     * (registered yet or not). Returns an unique index that is used later to

     * identify and invoke the operation.

     * </p>

     * <p>

     * By convention this index should be in a final and static variable in the

     * class that implements the operation. The value of this variable must be

     * set using the method

     * {@link GeometryManager#getGeometryOperationCode(String)}:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param geomOpName

     *            Operation's unique name

     * @param geomOp

     *            Specific GeometryOperation's instance implementing this

     *            operation

     * @return Index assigned to this operation. This index is used later to

     *         access the operation.

     */

    public int registerGeometryOperation(String geomOpName,

        GeometryOperation geomOp);

    /**

     * <p>

     * Registers a GeometryOperation associated to a GeometryType, that has been

     * specified using the type code and the subtype code. Returns an unique

     * index that is used later to identify and invoke the operation.

     * </p>

     * <p>

     * By convention this index should be in a final and static variable in the

     * class that implements the operation. The value of this variable must be

     * set using the method

     * {@link GeometryManager#getGeometryOperationCode(String)}:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * <p>

     * This method is only used if you have not a reference to the GeometryType

     * associated to the geometry class. If you have such reference then it is

     * slightly faster to use the method that receives the GeometryType.<br>

     * </p>

     * 

     * @param geomOpName

     *            Operation's unique name

     * @param geomOp

     *            Specific GeometryOperation's instance implementing this

     *            operation

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Index assigned to this operation. This index is used later to

     *         access the operation.

     * @throws GeometryTypeNotSupportedException

     *             Returns this exception if there is not a registered geometry

     *             with

     *             these type and subtype

     * @throws GeometryTypeNotValidException

     *             Returns if the type and subtype are not valid

     */

    public int registerGeometryOperation(String geomOpName,

        GeometryOperation geomOp, int type, int subType)

        throws GeometryTypeNotSupportedException, GeometryTypeNotValidException;

    /**

     * <p>

     * Registers a GeometryOperation associated to all the geometries with a

     * concrete type. Returns an unique index that is used later to identify and

     * invoke the operation.<br>

     * </p>

     * <p>

     * By convention this index should be in a final and static variable in the

     * class that implements the operation. The value of this variable must be

     * set using the method

     * {@link GeometryManager#getGeometryOperationCode(String)}:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param geomOpName

     *            Operation's unique name

     * @param geomOp

     *            Specific GeometryOperation's instance implementing this

     *            operation

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @return Index assigned to this operation. This index is used later to

     *         access the operation.

     */

    public int registerGeometryOperation(String geomOpName,

        GeometryOperation geomOp, int type);

    /**

     * <p>

     * Registers a GeometryOperation associated to all the geometries with a

     * concrete subtype. Returns an unique index that is used later to identify

     * and invoke the operation.<br>

     * </p>

     * <p>

     * By convention this index should be in a final and static variable in the

     * class that implements the operation. The value of this variable must be

     * set using the method

     * {@link GeometryManager#getGeometryOperationCode(String)}:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param geomOpName

     *            Operation's unique name

     * @param geomOp

     *            Specific GeometryOperation's instance implementing this

     *            operation

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Index assigned to this operation. This index is used later to

     *         access the operation.

     */

    public int registerGeometryOperationBySubtype(String geomOpName,

        GeometryOperation geomOp, int subType);

    /**

     * <p>

     * Registers a Geometry implementation class with a predefined geometry type

     * and returns the associated GeometryType instance. Available predefined

     * types are defined in {@link Geometry.TYPES} and the subtypes are defined

     * in {@link Geometry.SUBTYPES}.

     * </p>

     * <p>

     * How to register a geometry class with a predefined type:

     * 

     * <pre>

     * 

     * GeometryType geomType = GeometryLocator.getGeometryManager()

     *     .registerBasicGeometryType(Point2D.class, "Point2D", Geometry.TYPES.POINT,

     *         Geometry.SYBTYPES.GEOM2D);

     * </pre>

     * 

     * </p>

     * 

     * @param geomClass

     *            Geometry subclass. It must not be null and must implement

     *            Geometry, otherwise an exception

     *            is raised.

     * @param name

     *            Symbolic name for the geometry type, it can be null. If it is

     *            null then the symbolic name

     *            will be the simple class name.

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Instance of GeometryType associated to the Geometry

     *         implementation class

     *         geomClass

     * @throws IllegalArgumentException

     *             If geomClass is null or does not implement Geometry

     */

    public GeometryType registerGeometryType(Class geomClass, String name,

        int type, int subType);

    /**

     * <p>

     * Registers a Geometry implementation class with a predefined geometry type

     * and returns the associated GeometryType instance. Available predefined

     * types are defined in {@link Geometry.TYPES} and the subtypes are defined

     * in {@link Geometry.SUBTYPES}.

     * </p>

     * <p>

     * In this case the symbolic name will be the geometry's simple class name

     * </p>

     * How to register a new geometry type:

     * 

     * <pre>

     * 

     * GeometryType geomType = GeometryLocator.getGeometryManager()

     *     .registerBasicGeometryType(Point2D.class, Geometry.TYPES.POINT,

     *         Geometry.SYBTYPES.GEOM2D);

     * </pre>

     * 

     * @param geomClass

     *            Geometry implementation class. It must not be null and must

     *            implement Geometry,

     *            otherwise an exception is thrown.

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Instance of GeometryType associated to the Geometry

     *         implementation class

     * @throws IllegalArgumentException

     *             If geomClass is null or does not implement Geometry

     */

    public GeometryType registerGeometryType(Class geomClass, int type,

        int subType);

    /**

     * <p>

     * Returns an instance of GeometryType given the Geometry type and the

     * subtype.

     * </p>

     * 

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Instance of GeometryType associated to the type and the subtype

     * @throws GeometryTypeNotSupportedException

     *             Returns this exception if there is not a registered geometry

     *             with

     *             these type and subtype

     * @throws GeometryTypeNotValidException

     *             Returns if the type and subtype are not valid

     */

    public GeometryType getGeometryType(int type, int subType)

        throws GeometryTypeNotSupportedException, GeometryTypeNotValidException;

    /**

     * <p>

     * This method creates a {@link Geometry} with the type specified by this

     * GeometryType. The geometry is empty, and all the internal attributes must

     * be assigned to a value when the geometry has been created.

     * </p>

     * <p>

     * This example creates a point2D and sets the coordinates to 1,1:

     * 

     * <pre>

     * Point point =

     *     (Point) GeometryLocator.getGeometryManager().create(GEOMETRY.TYPES.POINT,

     *         GEOMETRY.SUBTYPES.GEOM2D);

     * point.setX(1);

     * point.setY(1);

     * </pre>

     * 

     * </p>

     * 

     * @param geomType

     *            The geometry type

     * @return

     *         A instance of a geometry.

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public Geometry create(GeometryType geomType)

        throws CreateGeometryException;

    /**

     * <p>

     * Creates a Envelope with a concrete subtype. The envelope is empty and it

     * have to be filled with the corners once has been created.

     * </p>

     * 

     * @param subType

     *            SubType of envelope. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     *         A Envelope

     * @throws CreateEnvelopeException

     *             If it is not possible to create the envelope.

     */

    public Envelope createEnvelope(int subType) throws CreateEnvelopeException;

    /**

     * <p>

     * Creates a Envelope with a concrete subtype. It sets the values for the

     * lower corner and the upper corner (in 2D) using the method parameters.

     * </p>

     * 

     * @param minX

     *            The minimum value for the X coordinate.

     * @param minY

     *            The minimum value for the Y coordinate.

     * @param maxX

     *            The maximum value for the X coordinate.

     * @param maxY

     *            The maximum value for the Y coordinate.

     * @param subType

     *            SubType of envelope. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     * @throws CreateEnvelopeException

     */

    public Envelope createEnvelope(double minX, double minY, double maxX,

        double maxY, int subType) throws CreateEnvelopeException;

    /**

     * <p>

     * This method creates a {@link Geometry} with the type specified by this

     * name. If a geometry with this name doesn't exist, a

     * {@link IllegalArgumentException} is thrown. The geometry is empty, and

     * all the internal attributes must be assigned to a value when the geometry

     * has been created.

     * </p>

     * <p>

     * This example creates a point2D and sets the coordinates to 1,1: It

     * supposes that there is a Point2D class with name "Point2D".

     * </p>

     * 

     * <pre>

     * Point point = (Point) GeometryLocator.getGeometryManager().create("Point2D");

     * point.setX(1);

     * point.setY(1);

     * </pre>

     * 

     * @param name

     *            The name of the geometry type

     * @return

     *         A instance of a geometry.

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public Geometry create(String name) throws CreateGeometryException;

    /**

     * Create a geometry from a WKT definition.

     * 

     * This is a utility method to wrap the invocation to the operation

     * {@link OPERATIONS#FROMWKT}.

     * 

     * @param wkt

     *            geometry in Well-known text format

     * 

     * @return the geometry as a Geometry

     * 

     * @throws CreateGeometryException

     * @throws GeometryException

     */

    public Geometry createFrom(String wkt, String srs)

        throws CreateGeometryException, GeometryException;

    public Geometry createFrom(String wkt) throws CreateGeometryException,

        GeometryException;

    /**

     * Create a geometry from a WKB definition.

     * 

     * This is a utility method to wrap the invocation to the operation

     * {@link OPERATIONS#FROMWKB}.

     * 

     * @param wkb

     *            geometry in well-known binary format

     * 

     * @return the geometry as a Geometry

     * 

     * @throws CreateGeometryException

     * @throws GeometryException

     */

    public Geometry createFrom(byte[] wkb) throws CreateGeometryException,

        GeometryException;

    /**

     * <p>

     * This method creates a {@link Geometry} with a concrete type and subtype.

     * The geometry is empty, and all the internal attributes must be assigned

     * to a value when the geometry has been created.

     * </p>

     * <p>

     * This example creates a point2D and sets the coordinates to 1,1. It

     * supposes that there is a Point2D class with the id 1.

     * </p>

     * 

     * <pre>

     * Point point =

     *     (Point) GeometryLocator.getGeometryManager().create(Geometry.TYPES.POINT,

     *         Geometry.SYBTYPES.GEOM2D);

     * point.setX(1);

     * point.setY(1);

     * </pre>

     * 

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     *         A instance of a geometry.

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public Geometry create(int type, int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * It creates a null geometry with a concrete subtype.

     * <p>

     * 

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     *         A NullGeometry

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public NullGeometry createNullGeometry(int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * Create a new point with a concrete type and sets the value for the X and

     * the Y.

     * </p>

     * 

     * @param x

     *            The X coordinate

     * @param y

     *            The y coordinate

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     * @return

     *         The Point

     */

    public Point createPoint(double x, double y, int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * Create a new curve with a concrete type and sets the value for the

     * coordinates using a GeneralPathX.

     * </p>

     * 

     * @param generalPathX

     *            It is used to set the values for the X and Y coordinates.

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     *         A curve

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public Curve createCurve(GeneralPathX generalPathX, int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * Create a new multicurve with a concrete type and sets the value for the

     * coordinates using a GeneralPathX.

     * </p>

     * 

     * @param generalPathX

     *            It is used to set the values for the X and Y coordinates.

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return A multicurve

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create the

     *             geometry.

     */

    public MultiCurve createMultiCurve(GeneralPathX generalPathX, int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * Create a new surface with a concrete type and sets the value for the

     * coordinates using a GeneralPathX.

     * </p>

     * 

     * @param generalPathX

     *            It is used to set the values for the X and Y coordinates.

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return

     *         A surface

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create

     *             the geometry.

     */

    public Surface createSurface(GeneralPathX generalPathX, int subType)

        throws CreateGeometryException;

    /**

     * <p>

     * Create a new multisurface with a concrete type and sets the value for the

     * coordinates using a GeneralPathX.

     * </p>

     * 

     * @param generalPathX

     *            It is used to set the values for the X and Y coordinates.

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return A multisurface

     * @throws CreateGeometryException

     *             This exception is thrown when the manager can not create the

     *             geometry.

     */

    public MultiSurface createMultiSurface(GeneralPathX generalPathX,

        int subType) throws CreateGeometryException;

    /**

     * <p>

     * Returns an operation given the Geometry type, the Geometry subtype and

     * and the operation code. If opCode corresponds to a common operation (a

     * common operation is an operation registered for all geometries), then

     * this method returns the common operation.

     * </p>

     * <p>

     * For better performance, if you need to call an operation multiple times,

     * use this method only once and keep the returned object in a local

     * variable over which you can iterate. For instance:

     * 

     * <pre>

     * // Get the operation you need

     * GeometryManager gm = GeometryLocator.getGeometryManager()

     * GeometryOperation geomOp = null;

     * try {

     *    geomOp = gm.getGeometryOperation(Draw2D.CODE);

     * } catch (GeometryTypeNotSupportedException gtnse) {

     *    // treat exception

     * } catch (GeometryOperationNotSupportedException gonse) {

     *    // treat exception

     * }

     * 

     *  // Fill the operation context with required params

     * GeometryOperationContext ctx = new GeometryOperationContext();

     * 

     *  // Here is the main loop where you call the operation

     * for (int i=0; i<MyGeometries.length; i++) {

     *    Object result = geomOp.invoke(myGeometries[i], ctx);

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param opCode

     *            The operation code

     * @param type

     *            Type of geometry. Must be a value defined in

     *            {@link Geometry.TYPES}

     * @param subType

     *            SubType of geometry. Must be a value defined in

     *            {@link Geometry.SUBTYPES}

     * @return Geometry operation

     * @throws GeometryTypeNotSupportedException

     *             Returns this exception if there is not a registered geometry

     *             with

     *             these type and subtype

     * @throws GeometryTypeNotValidException

     *             Returns this exception if the type and subtype are not valid

     * @throws GeometryOperationNotSupportedException

     *             Returns this exception if there is not a registered operation

     *             with

     *             this operation code

     */

    public GeometryOperation getGeometryOperation(int opCode, int type,

        int subType) throws GeometryTypeNotSupportedException,

        GeometryOperationNotSupportedException, GeometryTypeNotValidException;

    /**

     * <p>

     * Invokes an operation given its code, the geometry and the operation

     * context holding the parameters required for the operation.

     * </p>

     * 

     * @param opCode

     *            Operation code.

     * @param geom

     *            Geometry to which apply the operation

     * @param ctx

     *            Context holding the operation parameters

     * @return

     *         The object returned by an operation, depends on each operation.

     */

    public Object invokeOperation(int opCode, Geometry geom,

        GeometryOperationContext ctx)

        throws GeometryOperationNotSupportedException,

        GeometryOperationException;

    /**

     * <p>

     * Invokes an operation given its code, the geometry and the operation

     * context holding the parameters required for the operation.

     * </p>

     * 

     * @param geomOpName

     *            Operation name.

     * @param geom

     *            Geometry to which apply the operation

     * @param ctx

     *            Context holding the operation parameters

     * @return

     *         The object returned by an operation, depends on each operation.

     */

    public Object invokeOperation(String geomOpName, Geometry geom,

        GeometryOperationContext ctx)

        throws GeometryOperationNotSupportedException,

        GeometryOperationException;

    /**

     * <p>

     * Invokes an operation given its code, the geometry and the operation

     * context holding the parameters required for the operation.

     * </p>

     * 

     * @param geomOpName

     *            Operation name.

     * @param ctx

     *            Context holding the operation parameters

     * @return

     *         The object returned by an operation, depends on each operation.

     */

    public Object invokeOperation(String geomOpName,

        GeometryOperationContext ctx)

        throws GeometryOperationNotSupportedException,

        GeometryOperationException;

    /**

     * <p>

     * Registers the unique name of one operation. If it already exists then

     * this method does nothing but returning the name's corresponding index.

     * </p>

     * <p>

     * By convention this method is used to set the value of the final and

     * static variable that is located in the classes that implements the

     * operation:<BR>

     * 

     * <pre>

     * 

     * public class MyOperation extends GeometryOperation {

     * 

     *     public static final int CODE = GeometryLocator.getGeometryManager()

     *         .getGeometryOperationCode("MyOperation");

     * }

     * </pre>

     * 

     * </p>

     * 

     * @param geomOpName

     *            Name used to register the geometry operation

     * @return

     *         Index assigned to the operation name passed as parameter

     */

    public int getGeometryOperationCode(String geomOpName);

    /**

     * Returns a list with the name of the operations that have been

     * registered.

     * 

     * @return

     *         A list of the registered operations.

     */

    public List getGeometryOperationNames();

    /**

     * Returns the flatness used to convert a curve is a set

     * of points.

     * 

     * @return

     *         The flatness.

     */

    public double getFlatness();

    /**

     * Sets the application flatness.

     * 

     * @param flatness

     *            The flatness to set

     */

    public void setFlatness(double flatness);

}