Application: gvSIG desktop

/*

 *    GISToolkit - Geographical Information System Toolkit

 *    (C) 2002, Ithaqua Enterprises Inc.

 *

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

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

 *    License as published by the Free Software Foundation;

 *    version 2.1 of the License.

 *

 *    This library 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

 *    Lesser General Public License for more details.

 *

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

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

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

 *

 */

/* 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.dal.store.shp.utils;

import java.nio.ByteBuffer;

import java.nio.ByteOrder;

import org.gvsig.utils.bigfile.BigByteBuffer2;

/**

 * Class to represent the header in the shape file.

 */

public class ShapeFileHeader2 {

    /**

     * Shape Type Value Shape Type 0 Null Shape 1 Point 3 PolyLine 5 Polygon 8

     * MultiPoint 11 PointZ 13 PolyLineZ 15 PolygonZ 18 MultiPointZ 21 PointM

     * 23 PolyLineM 25 PolygonM 28 MultiPointM 31 MultiPatch

     */

    /* The null shape type, there is no shape for this record. */

    public static final int SHAPE_NULL = 0;

    public static final int SHAPE_POINT = 1;

    public static final int SHAPE_POLYLINE = 3;

    public static final int SHAPE_POLYGON = 5;

    public static final int SHAPE_MULTIPOINT = 8;

    public static final int SHAPE_POINTZ = 11;

    public static final int SHAPE_POLYLINEZ = 13;

    public static final int SHAPE_POLYGONZ = 15;

    public static final int SHAPE_MULTIPOINTZ = 18;

    public static final int SHAPE_POINTM = 21;

    public static final int SHAPE_POLYLINEM = 23;

    public static final int SHAPE_POLYGONM = 25;

    public static final int SHAPE_MULTIPOINTM = 28;

    public static final int SHAPE_MULTIPATCH = 31;

    /** File Code, must be the value 9994 */

    public int myFileCode = 9994;

    /** Unused 1; */

    public int myUnused1 = 0;

    /** Unused 2; */

    public int myUnused2 = 0;

    /** Unused 3; */

    public int myUnused3 = 0;

    /** Unused 4; */

    public int myUnused4 = 0;

    /** Unused 5; */

    public int myUnused5 = 0;

    /** File Length; */

    public int myFileLength = 0;

    /** Version of the file. */

    public int myVersion = 1000;

    public int myShapeType = 0;

    /** BoundingBox Xmin */

    public double myXmin = 0;

    /** BoundingBox Ymin */

    public double myYmin = 0;

    /** BoundingBox Xmax */

    public double myXmax = 0;

    /** BoundingBox Ymax */

    public double myYmax = 0;

    /** BoundingBox Zmin */

    public double myZmin = 0;

    /** BoundingBox Zmax */

    public double myZmax = 0;

    /** BoundingBox Zmin */

    public double myMmin = 0;

    /** BoundingBox Zmax */

    public double myMmax = 0;

    // notify about warnings.

    private boolean myWarning = true;

    /**

     * ShapeFileHeader constructor comment.

     */

    public ShapeFileHeader2() {

        super();

    }

    /**

     * Return the file code.

     *

     * @return Entero.

     */

    public int getFileCode() {

        return myFileCode;

    }

    /**

     * Return the version of the file.

     *

     * @return Versi?n.

     */

    public int getVersion() {

        return myVersion;

    }

    /**

     * Get the extents of the shape file.

     *

     * @return FullExtent.

     */

    public java.awt.geom.Rectangle2D.Double getFileExtents() {

        return new java.awt.geom.Rectangle2D.Double(myXmin, myYmin,

            myXmax - myXmin, myYmax - myYmin);

    }

    /**

     * Print warnings to system.out.

     *

     * @param inWarning boolean.

     */

    public void setWarnings(boolean inWarning) {

        myWarning = inWarning;

    }

    /**

     * Return the length of the header in 16 bit words..

     *

     * @return Longitud de la cabecera.

     */

    public int getHeaderLength() {

        return 50;

    }

    /**

     * Return the number of 16 bit words in the shape file as recorded in the

     * header

     *

     * @return Longitud del fichero.

     */

    public int getFileLength() {

        return myFileLength;

    }

    /**

     * Read the header from the shape file.

     *

     * @param in ByteBuffer.

     */

    public void readHeader(BigByteBuffer2 in) {

        // the first four bytes are integers

        // in.setLittleEndianMode(false);

        in.order(ByteOrder.BIG_ENDIAN);

        myFileCode = in.getInt();

        if (myFileCode != 9994) {

            warn("File Code = " + myFileCode + " Not equal to 9994");

        }

        // From 4 to 8 are unused.

        myUnused1 = in.getInt();

        // From 8 to 12 are unused.

        myUnused2 = in.getInt();

        // From 12 to 16 are unused.

        myUnused3 = in.getInt();

        // From 16 to 20 are unused.

        myUnused4 = in.getInt();

        // From 20 to 24 are unused.

        myUnused5 = in.getInt();

        // From 24 to 28 are the file length.

        myFileLength = in.getInt();

        // From 28 to 32 are the File Version.

        in.order(ByteOrder.LITTLE_ENDIAN);

        myVersion = in.getInt();

        // From 32 to 36 are the Shape Type.

        myShapeType = in.getInt();

        // From 36 to 44 are Xmin.

        myXmin = in.getDouble(); // Double.longBitsToDouble(in.getLong());

        // From 44 to 52 are Ymin.

        myYmin = in.getDouble();

        // From 52 to 60 are Xmax.

        myXmax = in.getDouble();

        // From 60 to 68 are Ymax.

        myYmax = in.getDouble();

        // From 68 to 76 are Zmin.

        myZmin = in.getDouble();

        // From 76 to 84 are Zmax.

        myZmax = in.getDouble();

        // From 84 to 92 are Mmin.

        myMmin = in.getDouble();

        // From 92 to 100 are Mmax.

        myMmax = in.getDouble();

        // that is all 100 bytes of the header.

    }

    public void write(ByteBuffer out,int type,

                    int numGeoms,int length,double minX,double minY,double maxX,double maxY,double minZ,double maxZ,double minM,double maxM){

                      out.order(ByteOrder.BIG_ENDIAN);

                      out.putInt(myFileCode);

                      for (int i = 0; i < 5; i++) {

                        out.putInt(0); //Skip unused part of header

                      }

                      out.putInt(length);

                      out.order(ByteOrder.LITTLE_ENDIAN);

                      out.putInt(myVersion);

                      out.putInt(type);

                      //write the bounding box

                      out.putDouble(minX);

                      out.putDouble(minY);

                      out.putDouble(maxX);

                      out.putDouble(maxY);

                      /*

                      out.putDouble(minZ);

                      out.putDouble(minZ);

                      out.putDouble(maxM);

                      out.putDouble(maxM);*/

                      out.order(ByteOrder.BIG_ENDIAN);

                      for (int i = 0; i < 8; i++) {

                        out.putInt(0); //Skip unused part of header

                      }

                    }

    /**

     * Muestra por consola los warning.

     *

     * @param inWarn warning.

     */

    private void warn(String inWarn) {

        if (myWarning) {

            System.out.print("WARNING: ");

            System.out.println(inWarn);

        }

    }

}