Application: gvSIG desktop » gvSIG raster

package org.gvsig.raster.lib.buffer.impl;

import java.util.ArrayList;

import java.util.List;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

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

import org.gvsig.raster.lib.buffer.api.Band;

import org.gvsig.raster.lib.buffer.api.Buffer;

import org.gvsig.raster.lib.buffer.api.BufferLocator;

import org.gvsig.raster.lib.buffer.api.BufferManager;

import org.gvsig.raster.lib.buffer.api.NoData;

import org.gvsig.raster.lib.buffer.api.PageManager;

import org.gvsig.raster.lib.buffer.api.exceptions.BandException;

import org.gvsig.raster.lib.buffer.api.exceptions.BufferException;

import org.gvsig.raster.lib.buffer.impl.exceptions.CreateBufferException;

import org.gvsig.tools.locator.LocatorException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * @author fdiaz

 *

 */

public class DefaultBuffer extends AbstractBuffer {

    protected static final Logger logger = LoggerFactory.getLogger(DefaultBuffer.class);

    /**

     * Default constructor of buffer.

     *

     * @param rows

     *            Rows of buffer and buffer bands.

     * @param columns

     *            Columns of buffer bands.

     * @param bandDataTypes

     *            Type of buffer bands. The band types also indicates the number

     *            of buffer bands.

     * @param bandNoData

     *            Band noData. If there are bans without NoData, bands will have

     *            undefined NoData value.

     * @param projection

     *            Projection of buffer

     * @param envelope

     *            Envelope of buffer

     * @param pageManagers

     *            Page manager to paginate this buffer. If page manager is null,

     *            buffer will be loaded in memory.

     * @throws CreateBufferException

     *             If there are some problems creating buffer.

     */

    public DefaultBuffer(int rows, int columns, int[] bandDataTypes, NoData[] bandNoData,

        IProjection projection, Envelope envelope, List<PageManager> pageManagers)

        throws CreateBufferException {

        this.bands = new ArrayList<Band>();

        this.rows = rows;

        this.columns = columns;

        this.projection = projection;

        this.envelope = envelope;

        try {

            if (envelope == null) {

                this.envelope =

                    GeometryLocator.getGeometryManager().createEnvelope(0, 0, columns, rows,

                        Geometry.SUBTYPES.GEOM2D);

            }

            if (bandDataTypes != null) {

                createBands(bandDataTypes, bandNoData, pageManagers);

            }

        } catch (Exception e) {

            throw new CreateBufferException(e);

        }

    }

    private void createBands(int[] bandDataTypes, NoData[] bandNoData,

        List<PageManager> pageManagers) throws BandException {

        BufferManager bufferManager = BufferLocator.getBufferManager();

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

            NoData noDataBand = null;

            if (bandNoData != null && i < bandNoData.length) {

                noDataBand = bandNoData[i];

            }

            PageManager pageManager = null;

            if (pageManagers != null && i < pageManagers.size()) {

                pageManager = pageManagers.get(i);

            }

            Band band =

                bufferManager.createBand(bandDataTypes[i], this.rows, this.columns, noDataBand,

                    pageManager);

            bands.add(band);

            band.addObserver(this);

        }

    }

    @Override

    public Object clone() throws CloneNotSupportedException {

        Buffer cloned;

        try {

            cloned =

                BufferLocator.getBufferManager().createBuffer(this.getRows(), this.getColumns(),

                    this.getBandTypes(), this.getProjection());

        } catch (LocatorException | BufferException e) {

            throw new CloneNotSupportedException("Can't clone buffer.");

        }

        for (int i = 0; i < this.getBandCount(); i++) {

            cloned.addBand((Band) this.getBand(i).clone());

        }

        return cloned;

    }

}