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GeoTrellis is an open source geographic data processing engine for high performance applications.

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package org.osgeo.proj4j;

import org.osgeo.proj4j.datum.*;

/**
 * An interface for the operation of transforming 
 * a {@link ProjCoordinate} from one {@link CoordinateReferenceSystem} 
 * into a different one.
 * 
 * @author Martin Davis
 * 
 * @see CoordinateTransformFactory
 */
public interface CoordinateTransform
{

    public CoordinateReferenceSystem getSourceCRS();
  
    public CoordinateReferenceSystem getTargetCRS();
  
  
    /**
     * Tranforms a coordinate from the source {@link CoordinateReferenceSystem} 
     * to the target one.
     * 
     * @param src the input coordinate to transform
     * @param tgt the transformed coordinate
     * @return the target coordinate which was passed in
     * 
     * @throws Proj4jException if a computation error is encountered
     */
    public ProjCoordinate transform( ProjCoordinate src, ProjCoordinate tgt )
        throws Proj4jException;
  

}