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The Esri Geometry API for Java enables developers to write custom applications for analysis of spatial data.

There is a newer version: 2.2.4

/*
 Copyright 1995-2013 Esri

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 For additional information, contact:
 Environmental Systems Research Institute, Inc.
 Attn: Contracts Dept
 380 New York Street
 Redlands, California, USA 92373

 email: [email protected]
 */
package com.esri.core.geometry;

import com.esri.core.geometry.Operator.Type;

/**
 * Projection of geometries to different coordinate systems.
 */
abstract class OperatorProject extends Operator {

	@Override
	public Type getType() {
		return Type.Project;
	}

	/**
	 * Performs the Project operation on a geometry cursor
	 * 
	 * @return Returns a GeometryCursor.
	 */
	public abstract GeometryCursor execute(GeometryCursor inputGeoms,
			ProjectionTransformation projection, ProgressTracker progressTracker);

	/**
	 * Performs the Project operation on a single geometry instance
	 * 
	 * @return Returns the Geometry after projection
	 */
	public abstract Geometry execute(Geometry geometry,
			ProjectionTransformation projection, ProgressTracker progressTracker);

	/**
	 * Transforms an array of points. Returns the number of points transformed.
	 */
	public abstract int transform(ProjectionTransformation transform,
			Point[] coordsSrc, int length, Point[] coordsDst);

	/**
	 * Transforms an array of 2D points and returns it. The points are stored in
	 * an interleaved array (x0, y0, x1, y1, x2, y2, ...).
	 * 
	 * @param transform
	 *            ProjectionTransformation
	 * @param coordsSrc
	 *            source coordinates to project.
	 * @param pointCount
	 *            the point count in the coordSrc. THere has to be at least
	 *            pointCount * 2 elements in the coordsSrc array.
	 * @return projected coordinates in the interleaved form.
	 */
	public abstract double[] transform(ProjectionTransformation transform,
			double[] coordsSrc, int pointCount);

	public static OperatorProject local() {
		return (OperatorProject) OperatorFactoryLocal.getInstance()
				.getOperator(Type.Project);
	}

}