org.jgrasstools.gears.io.dxfdwg.libs.dwg.DwgObject Maven / Gradle / Ivy

/*
 * JGrass - Free Open Source Java GIS http://www.jgrass.org 
 * (C) HydroloGIS - www.hydrologis.com 
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Library General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option) any
 * later version.
 * 
 * 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 Library General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Library General Public License
 * along with this library; if not, write to the Free Foundation, Inc., 59
 * Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.jgrasstools.gears.io.dxfdwg.libs.dwg;

import java.util.Vector;

/**
 * The DwgObject class represents a DWG object
 * 
 * @author jmorell
 */
public class DwgObject {
	protected int type;
	protected int handle;
	protected int layerHandleCode;
	protected String version;
	protected int mode;
	protected int layerHandle;
	protected int color;
	protected int numReactors;
	protected boolean noLinks;
	protected int linetypeFlags;
	protected int plotstyleFlags;
	protected int sizeInBits;
	protected Vector extendedData;
	protected int graphicData;
	protected int subEntityHandle;
	protected int xDicObjHandle;
	protected boolean graphicsFlag;
	
	/**
	 * Reads the header of an object in a DWG file Version 15 
	 * 
	 * @param data Array of unsigned bytes obtained from the DWG binary file
	 * @param offset The current bit offset where the value begins
	 * @return int New offset
	 * @throws Exception If an unexpected bit value is found in the DWG file. Occurs
	 * 		   when we are looking for LwPolylines.
	 */
	public int readObjectHeaderV15(int[] data, int offset) throws Exception {
		int bitPos = offset;
		Integer mode = (Integer)DwgUtil.getBits(data, 2, bitPos);
	    bitPos = bitPos + 2;
	    setMode(mode.intValue());
	    Vector v = DwgUtil.getBitLong(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    int rnum = ((Integer)v.get(1)).intValue();
	    setNumReactors(rnum);
	    v = DwgUtil.testBit(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    boolean nolinks = ((Boolean)v.get(1)).booleanValue();
	    setNoLinks(nolinks);
	    v = DwgUtil.getBitShort(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    int color = ((Integer)v.get(1)).intValue();
	    setColor(color);
	    v = DwgUtil.getBitDouble(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    float ltscale = ((Double)v.get(1)).floatValue();
	    Integer ltflag = (Integer)DwgUtil.getBits(data, 2, bitPos);
	    bitPos = bitPos + 2;
	    Integer psflag = (Integer)DwgUtil.getBits(data, 2, bitPos);
	    bitPos = bitPos + 2;
	    v = DwgUtil.getBitShort(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    int invis = ((Integer)v.get(1)).intValue();
	    v = DwgUtil.getRawChar(data, bitPos);
	    bitPos = ((Integer)v.get(0)).intValue();
	    int weight = ((Integer)v.get(1)).intValue();
		return bitPos;
	}
	
	/**
	 * Reads the tail of an object in a DWG file Version 15 
	 * 
	 * @param data Array of bytes obtained from the DWG binary file
	 * @param offset Offset for this array of bytes
	 * @return int New offset
	 * @throws Exception If an unexpected bit value is found in the DWG file. Occurs
	 * 		   when we are looking for LwPolylines.
	 */
	public int readObjectTailV15(int[] data, int offset) throws Exception {
		int bitPos = offset;
		Vector v = null;
		if (getMode()==0x0) {
			v = DwgUtil.getHandle(data, bitPos);
		    bitPos = ((Integer)v.get(0)).intValue();
		    int[] sh = new int[v.size()-1];
		    for (int i=1;i