Application: gvSIG desktop » gvSIG data provider for DWG

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <artifactId>org.gvsig.dwg.app.mainplugin</artifactId>

  <packaging>jar</packaging>

  <name>${project.artifactId}</name>

  <description>

DWG file format support (read-only)

Supported versions:

- v12

- v14

- v15

- v2004

  </description>

  <parent>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.dwg.app</artifactId>

      <version>2.0.118</version>

  </parent>

  <dependencies>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.tools.lib</artifactId>

        <scope>compile</scope>

    </dependency>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.andami</artifactId>

        <scope>compile</scope>

    </dependency>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.dwg.provider</artifactId>

        <scope>compile</scope>

    </dependency>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.dwg.provider.legend</artifactId>

        <scope>compile</scope>

    </dependency>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.dwg.lib</artifactId>

        <scope>runtime</scope>

    </dependency>

    <!-- Tests -->

    <dependency>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.fmap.dal.impl</artifactId>

      <type>test-jar</type>

      <scope>test</scope>

    </dependency>

    <dependency>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.fmap.dal.impl</artifactId>

      <type>jar</type>

      <scope>test</scope>

    </dependency>

  </dependencies>

    <properties>

        <!-- Package info property values -->

        <!-- Default values in org.gvsig.desktop -->

        <gvsig.package.info.name>Formats: dwg file format support (read-only)</gvsig.package.info.name>

        <gvsig.package.info.state>testing</gvsig.package.info.state>

        <gvsig.package.info.official>true</gvsig.package.info.official>

        <gvsig.package.info.dependencies>required: org.gvsig.app.mainplugin -ge 2.1.0-A</gvsig.package.info.dependencies>

        <gvsig.package.info.categories>Formats,Vector</gvsig.package.info.categories>

        <gvsig.package.info.poolURL>https://devel.gvsig.org/download/projects/gvsig-dwg/pool</gvsig.package.info.poolURL>

    </properties>

  <build>

    <plugins>

      <plugin>

        <!-- Skip compilation tests -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-compiler-plugin</artifactId>

        <executions>

          <execution>

            <id>default-testCompile</id>

            <phase>process-test-sources</phase>

            <goals>

              <goal>testCompile</goal>

            </goals>

            <configuration>

              <skip>true</skip>

            </configuration>

          </execution>

        </executions>

      </plugin>

      <plugin>

        <!-- Skip test execution -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-surefire-plugin</artifactId>

        <configuration>

          <skipTests>true</skipTests>

        </configuration>

      </plugin>

    </plugins>

  </build>

</project>

#Sun Apr 19 18:57:51 CEST 2020

buildNumber=2186

<?xml version="1.0" encoding="ISO-8859-1"?>

<plugin-config>

	<libraries library-dir="lib">

	</libraries>

	<depends plugin-name="org.gvsig.app.mainplugin"/>

		<resourceBundle name="text"/>

	<extensions>

		<extension class-name="org.gvsig.dwg.DWGRegisterExtension"

			description="DWG Driver"

			active="true">

		</extension>

	</extensions>

</plugin-config>

<assembly>

  <id>gvsig-plugin-package</id>

  <formats>

    <format>zip</format>

  </formats>

  <baseDirectory>${project.artifactId}</baseDirectory>

  <includeBaseDirectory>true</includeBaseDirectory>

  <files>

    <file>

      <source>target/${project.artifactId}-${project.version}.jar</source>

      <outputDirectory>lib</outputDirectory>

    </file>

    <file>

      <source>target/package.info</source>

    </file>

  </files>

  <fileSets>

    <fileSet>

      <directory>src/main/resources-plugin</directory>

      <outputDirectory>.</outputDirectory>

    </fileSet>

  </fileSets>

  <dependencySets>

    <dependencySet>

      <useProjectArtifact>false</useProjectArtifact>

      <useTransitiveDependencies>false</useTransitiveDependencies>

      <outputDirectory>lib</outputDirectory>

      <includes>

        <include>org.gvsig:org.gvsig.dwg.provider.legend</include>

        <include>org.gvsig:org.gvsig.dwg.provider</include>

        <include>org.gvsig:org.gvsig.dwg.lib</include>

      </includes>

    </dependencySet>

  </dependencySets>

</assembly>

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.dwg;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.dwg.fmap.dal.store.dwg.DWGStoreProvider;

import org.gvsig.fmap.mapcontext.MapContextLocator;

/**

 * Dummy DWG extension, as all the registration happens in the

 * {@link DWGLibrary}.

 *

 * @author gvSIG Team

 */

public class DWGRegisterExtension extends Extension {

	public void execute(String actionCommand) {

		// Nothing to do

	}

	public void initialize() {

		IconThemeHelper.registerIcon("layer", "layer-icon-dwg", this);

	}

	public void postInitialize() {

		MapContextLocator.getMapContextManager().registerIconLayer(DWGStoreProvider.NAME, "layer-icon-dwg");

	}

	public boolean isEnabled() {

		// Nothing to do

		return false;

	}

	public boolean isVisible() {

		// Nothing to do

		return false;

	}

}

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

/*

* AUTHORS (In addition to CIT):

* 2008 IVER T.I. S.A.   {{Task}}

*/

package org.gvsig.dwg.fmap.dal.store.dwg;

import java.io.File;

import org.gvsig.fmap.dal.DataStoreParameters;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.BaseTestFeatureStore;

import org.gvsig.fmap.dal.feature.FeatureStore;

public class TestDWG extends BaseTestFeatureStore {

	protected boolean testDXFInitialized = false;

	public static File file_prueba = new File(TestDWG.class.getResource(

			"data/V2000.dwg").getFile());

	/*

	 * (non-Javadoc)

	 *

	 * @see

	 * org.gvsig.fmap.dal.feature.BaseTestFeatureStore#getDefaultDataStoreParameters

	 * ()

	 */

	public DataStoreParameters getDefaultDataStoreParameters()

			throws DataException {

		DWGStoreParameters dwgParameters = null;

		dwgParameters = (DWGStoreParameters) dataManager

				.createStoreParameters(DWGStoreProvider.NAME);

		dwgParameters.setFile(file_prueba);

		dwgParameters.setCRS("EPSG:23030");

		return dwgParameters;

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see org.gvsig.fmap.dal.feature.BaseTestFeatureStore#hasExplorer()

	 */

	public boolean hasExplorer() {

		// TODO Auto-generated method stub

		return false;

	}

	public boolean usesResources() {

		return true;

	}

	public void testLegendAndLabeling() throws Exception {

		DataStoreParameters params = getDefaultDataStoreParameters();

		FeatureStore store = (FeatureStore) dataManager.openStore(params

				.getDataStoreName(), params);

		assertNotNull(store.invokeDynMethod("getLegend", null));

		assertNotNull(store.invokeDynMethod("getLabeling", null));

		store.dispose();

	}

}

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

*

* 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., 51 Franklin Street, Fifth Floor, Boston,

* MA  02110-1301, USA.

*

*/

/*

* AUTHORS (In addition to CIT):

* 2009 IVER T.I   {{Task}}

*/

package org.gvsig.dwg.fmap.dal.store.dwg;

import java.io.File;

public class TestDWG2004 extends TestDWG {

	public static File file_prueba = new File(TestDWG.class.getResource(

			"data/V2004.dwg").getFile());

}

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <artifactId>org.gvsig.dwg.app</artifactId>

  <packaging>pom</packaging>

  <name>${project.artifactId}</name>

  <parent>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.dwg</artifactId>

      <version>2.0.118</version>

  </parent>

  <modules>

    <module>org.gvsig.dwg.app.mainplugin</module>

  </modules>

</project>

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <artifactId>org.gvsig.dwg.lib</artifactId>

  <packaging>jar</packaging>

  <name>${project.artifactId}</name>

  <description>

Library for read-only access DWG files

Supported versions:

- v12

- v14

- v15

- v2004

  </description>

  <parent>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.dwg</artifactId>

      <version>2.0.118</version>

  </parent>

  <dependencies>

    <dependency>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.tools.lib</artifactId>

      <scope>compile</scope>

    </dependency>

    <dependency>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.projection.api</artifactId>

      <scope>compile</scope>

    </dependency>

    <dependency>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.fmap.geometry.api</artifactId>

        <scope>compile</scope>

    </dependency>

  </dependencies>

</project>

/*

 * Created on 09-ene-2007

 *

 * 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.dwg.lib.readers;

import java.awt.geom.Point2D;

import java.io.IOException;

import java.nio.ByteBuffer;

import java.nio.ByteOrder;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.dwg.lib.CorruptedDwgEntityException;

import org.gvsig.dwg.lib.DwgFile;

import org.gvsig.dwg.lib.DwgHandleReference;

import org.gvsig.dwg.lib.DwgObject;

import org.gvsig.dwg.lib.DwgObjectFactory;

import org.gvsig.dwg.lib.IDwgBlockMember;

import org.gvsig.dwg.lib.IDwgPolyline;

import org.gvsig.dwg.lib.IDwgVertex;

import org.gvsig.dwg.lib.objects.DwgArc;

import org.gvsig.dwg.lib.objects.DwgBlockHeader;

import org.gvsig.dwg.lib.objects.DwgCircle;

import org.gvsig.dwg.lib.objects.DwgEndblk;

import org.gvsig.dwg.lib.objects.DwgInsert;

import org.gvsig.dwg.lib.objects.DwgLayer;

import org.gvsig.dwg.lib.objects.DwgLine;

import org.gvsig.dwg.lib.objects.DwgMeshPolyline;

import org.gvsig.dwg.lib.objects.DwgPFacePolyline;

import org.gvsig.dwg.lib.objects.DwgPoint;

import org.gvsig.dwg.lib.objects.DwgPolyline2D;

import org.gvsig.dwg.lib.objects.DwgPolyline3D;

import org.gvsig.dwg.lib.objects.DwgSeqend;

import org.gvsig.dwg.lib.objects.DwgSolid;

import org.gvsig.dwg.lib.objects.DwgText;

import org.gvsig.dwg.lib.objects.DwgVertex2D;

import org.gvsig.dwg.lib.objects.DwgVertex3D;

import org.gvsig.dwg.lib.objects.DwgVertexPFace;

import org.gvsig.dwg.lib.objects.DwgVertexPFaceFace;

/**

 * Reads version 12 dwg files.

 * 

 * DWG 13 and DWG 12 are very different formats (nor do DWG 13-14 and 2000).

 * Thats the reason why this IDwgFileReader is very different from the rest. 

 * 

 * Documentation of reverse engineering of the format:

 * 	http://www.iwriteiam.nl/DWG12.html

 * 

 * @author azabala

 * 

 */

public class DwgFileV12Reader implements IDwgFileReader{

	private DwgFile dwgFile;

	private ByteBuffer bb;

	ArrayList readers = new ArrayList();

	private boolean r13 = false;

	int index = 0;

	ArrayList blocks = new ArrayList();

	/**

	 * While DwgBlock is a DWG entity, readed from the DWG entities

	 * section, a Block is an entry in the BLOCK Section of DWG 12 format.

	 * 

	 * Block has block name attribute (like DwgBlock), but its most

	 * important attribute is its order in the Block section.

	 * 

	 * Inserts has a short number that we think is the order of its

	 * referred block in the block table (the only approach to fech

	 * the block of an insert)

	 * */

	class Block {

		/*

        |----------|--------------------------------------------|

        | 1        | This is an anonymous Block generated by    |

        |          | hatching, associative dimensioning, other  |

        |          | internal operations, or an application     |

        |----------|--------------------------------------------|

        | 2        | This Block has Attributes                  |

        |----------|--------------------------------------------|

        | 4        | This Block is an external reference (Xref) |

        |----------|--------------------------------------------|

        | 8        | not used                                   |

        |----------|--------------------------------------------|

        | 16       | This Block is externally dependent         |

        |----------|--------------------------------------------|

        | 32       | This is a resolved external reference, or  |

        |          | dependent of an external reference         |

        |----------|--------------------------------------------|

        | 64       | This definition is referenced              |

        +-------------------------------------------------------+

        */

		byte flag;

		String name;

		short used;

		byte b1;

		short w1;

		byte b2;

		short w3;

		short crc;

	}

	public DwgFileV12Reader(boolean isR13){

		r13 = isR13;

		readers.add(null);//0

		readers.add(new LineReader());//1

		readers.add(new PointReader());//2

		readers.add(new CircleReader());//3

		readers.add(new ShapeReader());//4

		readers.add(null);//5

		readers.add(null);//6

		readers.add(new TextReader());//7

		readers.add(new ArcReader());//8

		readers.add(new TraceReader());//9

		readers.add(null);//10

		readers.add(new SolidReader());//11

		readers.add(new BlkReader());//12

		readers.add(new EndBlkReader());//13

		readers.add(new InsertReader());//14

		readers.add(new AttDefReader());//15

		readers.add(new AttribReader());//16

		readers.add(new SbEndReader());//17

		readers.add(null);//18

		readers.add(new PlineReader());//19

		readers.add(new VertexReader());//20

		readers.add(null);//21

		readers.add(new Face3DReader());//22

		readers.add(new DimReader());//23

		readers.add(new VPortReader());//24

	}

	/* (non-Javadoc)

	 * @see com.iver.cit.jdwglib.dwg.readers.IDwgFileReader#read(com.iver.cit.jdwglib.dwg.DwgFile, java.nio.ByteBuffer)

	 */

	public void read(DwgFile dwgFile, ByteBuffer bb) throws IOException {

		this.dwgFile = dwgFile;

		this.bb = bb;

		try {

////			handle.seek(6, 1) # skip rest of version

//			bb.position(12);

//			bb.position(bb.position() + 6);

			bb.position(0);

			byte[] header = new byte[12];

			bb.get(header);

			String headerStr = new String(header);

//		    (_b1, _w1, _w2, _w3, _b2) = struct.unpack("<BhhhB", handle.read(8))

			bb.order(ByteOrder.LITTLE_ENDIAN);

			byte b1 = bb.get();

			short w1 = bb.getShort();

			short w2 = bb.getShort();

			short w3 = bb.getShort();

			byte b2 = bb.get();

			//To translate Python to Java, we must see the number

			//of bytes of the reading

//			 _estart, _eend = struct.unpack("<ll", handle.read(8))

			bb.order(ByteOrder.LITTLE_ENDIAN);

			int eStart = bb.getInt();

			int eEnd = bb.getInt();

//			_bsstart, _l1, _bsend, _l2 = struct.unpack("<llll", handle.read(16))

			int bsStart = bb.getInt();

			int l1 = bb.getInt();

			int bsEnd = bb.getInt();

			int l2 = bb.getInt();

			Dwg12Table blockTable = getTable();

			Dwg12Table layerTable = getTable();

			Dwg12Table styleTable = getTable();

			Dwg12Table lineTypeTable = getTable();

			Dwg12Table viewTable = getTable();

			readHeader();

			Dwg12Table ucsTable = getTable();

			bb.position(0x500);

			Dwg12Table vportTable = getTable();

			bb.position(bb.position() + 8);

			Dwg12Table appidTable = getTable();

			bb.position(bb.position() + 6);

			Dwg12Table dimStyleTable = getTable();

			bb.position(0x69f);

			Dwg12Table p13table = getTable();

			bb.position(bb.position() + 38);

			int currentPosition = bb.position();

			if(currentPosition != eStart){

				//Se supone que deber?amos estar en eStart

				throw new RuntimeException("Error: no se ha llegado al principio de las entidades de dibujo");

			}

			//lee primero entidades normales?

			readEntities(eStart, eEnd);

			bb.position(bb.position() + 19);

			readBlockTable(blockTable);

			readLayerTable(layerTable);

//de momento nos saltamos estas tablas

//			readStyleTable(styleTable);

//			readLTypeTable(lineTypeTable);

//			readViewTable(viewTable);

//			readUcsTable(ucsTable);

//			readVportTable(vportTable);

//			readAppidTable(appidTable);

//			readDimStyleTable(dimStyleTable);

//			readP13Table(p13table);

			//luego lee entidades de bloque

			readEntities(bsStart, bsEnd);

			bb.position(bb.position() + 36);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			int peStart, peEnd, pbStart, pbEnd;

			peStart = bb.getInt();

			peEnd = bb.getInt();

			pbStart = bb.getInt();

			pbEnd = bb.getInt();

			if(peStart != eStart)

				System.out.println("peStart="+peStart+" eStart="+eStart);

			if(peEnd != eEnd)

				System.out.println("peStart="+peEnd+" eStart="+eEnd);

			if(pbStart != bsStart)

				System.out.println("peStart="+pbStart+" eStart="+bsStart);

			if(bsEnd != pbEnd)

				System.out.println("peStart="+pbStart+" eStart="+bsStart);

			bb.position(bb.position() + 12);

			Dwg12TableTest bts = getTableTest();

			Dwg12TableTest lyrTs = getTableTest();

			Dwg12TableTest sts = getTableTest();

			Dwg12TableTest ltts = getTableTest();

			Dwg12TableTest vts = getTableTest();

			Dwg12TableTest uts = getTableTest();

			Dwg12TableTest vpts = getTableTest();

			Dwg12TableTest ats = getTableTest();

			Dwg12TableTest dts = getTableTest();

			Dwg12TableTest pts = getTableTest();

		} catch (Exception e) {

			e.printStackTrace();

//			logger.error(e);

		}

	}

	private void readP13Table(Dwg12Table p13table) {

		// TODO Auto-generated method stub

	}

	private void readDimStyleTable(Dwg12Table dimStyleTable) {

		short size = dimStyleTable.s1;

		int numRecs = dimStyleTable.i1;

		int start = dimStyleTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short word = bb.getShort();

			double[] d4048 = new double[9];

			for(int j = 0; j < 9; j++){

				d4048[j] = bb.getDouble();

			}

			double[] d40145 = new double[6];

			for(int j = 0; j < 6; j++){

				d40145[j] = bb.getDouble();

			}

			byte[] b7078 = new byte[7];

			for(int j = 0; j < 7; j++){

				b7078[j] = bb.get();

			}

			byte[] b170175 = new byte[6];

			for(int j = 0; j < 6; j++){

				b170175[j] = bb.get();

			}

			bb.order(ByteOrder.nativeOrder());

			byte[] s3 = new byte[16];

			bb.get(s3);

			byte[] s4 = new byte[16];

			bb.get(s4);

			byte[] s5 = new byte[32];

			bb.get(s5);

			byte[] s6 = new byte[32];

			bb.get(s6);

			byte[] s7 = new byte[32];

			bb.get(s6);

			bb.position(bb.position() + 3);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short w176 = bb.getShort();

			short w177 = bb.getShort();

			short w178 = bb.getShort();

			double d146 = bb.getDouble();

			double d147 = bb.getDouble();

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short crc = bb.getShort();

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	private void readAppidTable(Dwg12Table appidTable) {

		short size = appidTable.s1;

		int numRecs = appidTable.i1;

		int start = appidTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short word = bb.getShort();

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short crc = bb.getShort();

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	private void readVportTable(Dwg12Table vportTable) {

		short size = vportTable.s1;

		int numRecs = vportTable.i1;

		int start = vportTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short used = bb.getShort();

			double[] pt10 = getPoint(false);

			double[] pt11 = getPoint(false);

			double[] pt17 = getPoint(false);

			double[] pt16 = getPoint(true);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double d50 = bb.getDouble();

			double d40 = bb.getDouble();

			double[] pt12 = getPoint(false);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double d41 = bb.getDouble();

			double d42 = bb.getDouble();

			double d43 = bb.getDouble();

			double d44 = bb.getDouble();

			short[] w7178 = new short[8];

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

				w7178[j] = bb.getShort();

			}

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double d51 = bb.getDouble();

			double[] pt13 = getPoint(false);

			double[] pt14 = getPoint(false);

			double[] pt15 = getPoint(false);

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short crc = bb.getShort();

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	private void readUcsTable(Dwg12Table ucsTable) {

		short size = ucsTable.s1;

		int numRecs = ucsTable.i1;

		int start = ucsTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short used = bb.getShort();

			double[] pt10 = getPoint(true);

			double[] pt11 = getPoint(true);

			double[] pt12 = getPoint(true);

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short crc = bb.getShort();

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	private void readViewTable(Dwg12Table viewTable) {

		short size = viewTable.s1;

		int numRecs = viewTable.i1;

		int start = viewTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short used = bb.getShort();

			double db40 = bb.getDouble();

			double[] pt10 = getPoint(false);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double db41 = bb.getDouble();

			double[] pt11 = getPoint(true);

			double[] pt12 = getPoint(true);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short w71 = bb.getShort();

			double db42 = bb.getDouble();

			double db43 = bb.getDouble();

			double db44 = bb.getDouble();

			double db50 = bb.getDouble();

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short crc = bb.getShort();

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	private void readLTypeTable(Dwg12Table lineTypeTable) {

		short size = lineTypeTable.s1;

		int numRecs = lineTypeTable.i1;

		int start = lineTypeTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short w1 = bb.getShort();

			byte[] s1 = new byte[48];

			bb.get(s1);

			String s1name = new String(s1);

			bb.order(ByteOrder.nativeOrder());

			byte b1 = bb.get();

			byte b2 = bb.get();

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double[] doubles = new double[13];

			for(int j = 0; j < 13; j++){

				doubles[j] = bb.getDouble();

			}

			short crc = bb.getShort();

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	/**

	 * @param styleTable

	 */

	private void readStyleTable(Dwg12Table styleTable) {

		short size = styleTable.s1;

		int numRecs = styleTable.i1;

		int start = styleTable.i2;

		int end = -1;

		bb.position(start);

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

			end = bb.position() + size;

			byte flag = bb.get();

			byte[] nameBytes = new byte[32];

			bb.get(nameBytes);

			String name = new String(nameBytes);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short w1 = bb.getShort();

			double d1 = bb.getDouble();

			double d2 = bb.getDouble();

			double d3 = bb.getDouble();

			byte b1 = bb.get();

			double d4 = bb.getDouble();

			byte[] s1 = new byte[128];

			bb.get(s1);

			short crc = bb.getShort();

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	/**

	 * @param layerTable

	 */

	private void readLayerTable(Dwg12Table layerTable) {

		short size = layerTable.s1;

		int numR = layerTable.i1;

		int start = layerTable.i2;

		int begin = -1;

		int end = -1;

		DwgLayer layer = null;

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

			begin = start + i * size;

			bb.position(begin);

			end = begin + size - 2;

			layer = new DwgLayer(index);

			index++;

			byte flag = bb.get();

			/*

			 +=====================================================+

          | Flag bit | Meaning                                  |

          | value    |                                          |

          |----------|------------------------------------------|

          | 1        | If set, layer is frozen                  |

          |----------|------------------------------------------|

          | 2        | If set, layer is frozen by default in    |

          |          | new Viewports                            |

          |----------|------------------------------------------|

          | 4        | If set, layer is locked                  |

          +-----------------------------------------------------+

			 * */

			if((flag & 0x1) > 0){

				layer.setFrozen(true);

			}

			if((flag & 0x2) > 0){

				layer.setFrozenInNew(true);

			}

			if((flag & 0x4) > 0){

				layer.setLocked(true);

			}

			byte[] nameByte = new byte[32];

			bb.get(nameByte);

			String name = new String(nameByte).trim();

			layer.setName(name);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short used = bb.getShort();

			short color = bb.getShort();

			layer.setColor(color);

			short style = bb.getShort();

			short crc = bb.getShort();

			DwgHandleReference handle = new DwgHandleReference(0x5, i);

			layer.setHandle(handle);

			dwgFile.addDwgObject(layer);

			int offset = end - bb.position();

			if(offset > 0)

				bb.position(bb.position() + offset);

		}

		byte[] crc32 = new byte[32];

		bb.get(crc32);

	}

	interface EntityReader{

		void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj);

	}

	/**

	 * In DWG 12 version, some kind of objects (Polylines and Vertex) cannot be

	 * instanciated until the EntityReader has readed some stuff (flags and so)

	 * from the file.

	 * 

	 * DefferedEntityReader has the responsability to create DwgObject instances,

	 * and it has the precondition that DwgObject parameter of its method read must

	 * be null.

	 * */

	abstract class DefferedEntityReader implements EntityReader{

		abstract DwgObject getDwgObject(int index);

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj){

			if(dwgObj != null)

				throw new RuntimeException("DefferedEntityReader es el encargado de construir los objetos, debe recibirlos a null");

		}

	}

	class LineReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			if(! (dwgObj instanceof DwgLine))

				throw new RuntimeException("No es entidad LINE");

			DwgLine line = (DwgLine) dwgObj;

			boolean zflag = true;

			if( (flags & 0x4) > 0)

				zflag = false;

			double[] pt10 = getPoint(zflag);

			double[] pt11 = getPoint(zflag);

			line.setP1(pt10);

			line.setP2(pt11);

			if((opts & 0x1) > 0){

				double[] pt210 = getPoint(true);

				line.setExtrusion(pt210);

			}

			if((opts & 0x2) > 0){

				/*

				 * This field is only found in DWG12 prev

				 * files. Since DWG 12, elevation is saved

				 * in third coordinate of points.

				 * 

				 * */

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db38 = bb.getDouble();

				line.getP1()[2] = db38;

				line.getP2()[2] = db38;

			}

		}

	}

	class PointReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			if(! (dwgObj instanceof DwgPoint))

				throw new RuntimeException("No es entidad POINT");

			DwgPoint point = (DwgPoint) dwgObj;

			boolean zflag = true;

			if((flags & 0x4) > 0)

				zflag = false;

			double[] pt10 = getPoint(zflag);

			point.setPoint(pt10);

			if((opts & 0x1) > 0){

				double[] pt210 = getPoint(true);

				point.setExtrusion(pt210);

			}

			if((opts & 0x2) > 0){

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db38 = bb.getDouble();

				point.getPoint()[2] = db38;

			}

		}

	}

	class CircleReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			if(! (dwgObj instanceof DwgCircle))

				throw new RuntimeException("No es entidad CIRCLE");

			DwgCircle circle = (DwgCircle) dwgObj;

			boolean zflag = true;

			if((flags & 0x4) > 0)

				zflag = false;

			double[] pt10 = getPoint(zflag);

			circle.setCenter(pt10);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double d40 = bb.getDouble();

			circle.setRadius(d40);

			double[] pt210 = null;

			if((opts & 0x1) > 0){

				pt210 = getPoint(true);

			}else{

				pt210 = new double[]{0,0,1};

			}

			circle.setExtrusion(pt210);

			if((opts & 0x2) > 0){

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db38 = bb.getDouble();

				circle.getCenter()[2] = db38;

			}

		}

	}

	class ShapeReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			//TODO POR IMPLEMENTAR DwgShape (referencia a un

			//fichero de texto)

			double[] pt10 = getPoint(false);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			short w2 = bb.getShort();

			if((opts & 0x1) > 0){

				double[] pt210 = getPoint(true);

			}

			if((opts & 0x2) > 0){

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db38 = bb.getDouble();

			}

		}

	}

	public String getString(){

		bb.order(ByteOrder.LITTLE_ENDIAN);

		short len = bb.getShort();

		byte[] bytes = new byte[len];

		bb.order(ByteOrder.nativeOrder());

		bb.get(bytes);

		return new String(bytes);

	}

	class TextReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			if(! (dwgObj instanceof DwgText))

				throw new RuntimeException("No es entidad TEXT");

			DwgText txt = (DwgText) dwgObj;

			double[] pt10 = getPoint(false);

			txt.setInsertionPoint(new Point2D.Double(pt10[0], pt10[1]));

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double db40 = bb.getDouble();

			txt.setHeight(db40);

			String text = getString();

			txt.setText(text);

			if((opts & 0x1) > 0){

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db50 = bb.getDouble();

				txt.setRotationAngle(db50);

			}

			if((opts & 0x2) > 0){

				double db41 = bb.getDouble();

				txt.setWidthFactor(db41);//TODO 41 es width factor seguro?

			}

			if((opts & 0x4) > 0){

				double db51 = bb.getDouble();

				txt.setObliqueAngle(db51);

			}

			if((opts & 0x8) > 0){

				byte b7 = bb.get();

			}

			if((opts & 0x10) > 0){

				byte b71 = bb.get();

				//parametros de mirroring

				txt.setGeneration(b71);

			}

			if((opts & 0x20) > 0){

				byte b72 = bb.get();

				txt.setHalign(b72);

			}

			if((opts & 0x40) > 0){

				double[] pt11 = getPoint(false);

				txt.setAlignmentPoint(new Point2D.Double(pt11[0], pt11[1]));

			}

			if((opts & 0x100) > 0){

				byte b73 = bb.get();

				txt.setValign(b73);

			}

			//TODO La especificaci?n DXF 12 dice que la extrusion 

			//codigos DXF 210, 220, 230 se aplica sobre:

			/*

			 Line, Point, Circle, Shape, Text, Arc, Trace,

			 Solid, Block Reference, Polyline, 

			  Dimension, Attribute, and Attribute Definition entity

			  Pero aqu? no aparece por ningun lado la extrusion

			 * */

			double[] ext = new double[]{0, 0, 1};

			txt.setExtrusion(ext);

		}

	}

	class ArcReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {

			if(! (dwgObj instanceof DwgArc))

				throw new RuntimeException("No es entidad ARC");

			DwgArc arc = (DwgArc) dwgObj;

			double[] pt10 = getPoint(false);

			arc.setCenter(pt10);

			bb.order(ByteOrder.LITTLE_ENDIAN);

			double d40 = bb.getDouble();

			arc.setRadius(d40);

			double d50 = bb.getDouble();

			arc.setInitAngle(d50);

			double d51 = bb.getDouble();

			arc.setEndAngle(51);

			double[] pt210 = null;

			if((opts & 0x1) > 0){

				pt210 = getPoint(true);

				arc.setExtrusion(pt210);

			}else{

				pt210 = new double[]{1, 0, 0};

			}

			if((opts & 0x2) > 0){

				bb.order(ByteOrder.LITTLE_ENDIAN);

				double db38 = bb.getDouble();

				arc.getCenter()[2] = db38;

			}

		}

	}

	class TraceReader implements EntityReader{

		public void read(ByteBuffer bb, byte flags, short opts, DwgObject dwgObj) {