root / trunk / libraries / libDwg / src / com / iver / cit / jdwglib / dwg / DwgHandleReference.java @ 10313
History | View | Annotate | Download (3.19 KB)
1 | 10017 | fdiaz | /* jdwglib. Java Library for reading Dwg files.
|
---|---|---|---|
2 | *
|
||
3 | * Author: Equipo de desarrollo de gvSIG.
|
||
4 | * Port from the Pythoncad Dwg library by Art Haas.
|
||
5 | *
|
||
6 | * Copyright (C) 2007 IVER TI S.A. and Generalitat Valenciana
|
||
7 | *
|
||
8 | * This program is free software; you can redistribute it and/or
|
||
9 | * modify it under the terms of the GNU General Public License
|
||
10 | * as published by the Free Software Foundation; either version 2
|
||
11 | * of the License, or (at your option) any later version.
|
||
12 | *
|
||
13 | * This program is distributed in the hope that it will be useful,
|
||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
16 | * GNU General Public License for more details.
|
||
17 | *
|
||
18 | * You should have received a copy of the GNU General Public License
|
||
19 | * along with this program; if not, write to the Free Software
|
||
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
||
21 | *
|
||
22 | * For more information, contact:
|
||
23 | *
|
||
24 | * IVER TI S.A.
|
||
25 | * C/Salamanca, 50
|
||
26 | * 46005 Valencia
|
||
27 | * Spain
|
||
28 | * +34 963163400
|
||
29 | * dac@iver.es
|
||
30 | */package com.iver.cit.jdwglib.dwg; |
||
31 | 9992 | fdiaz | |
32 | import java.util.ArrayList; |
||
33 | |||
34 | import com.iver.cit.gvsig.fmap.drivers.dgn.ByteUtils; |
||
35 | |||
36 | public class DwgHandleReference { |
||
37 | |||
38 | private Integer code=null; |
||
39 | private Integer offset=null; |
||
40 | |||
41 | public DwgHandleReference(int code, int offset){ |
||
42 | this.code=new Integer(code); |
||
43 | this.offset=new Integer(offset); |
||
44 | } |
||
45 | |||
46 | public DwgHandleReference(){
|
||
47 | } |
||
48 | |||
49 | public void setCode(int code){ |
||
50 | this.code = new Integer(code); |
||
51 | } |
||
52 | |||
53 | public void setOffset(int offset){ |
||
54 | this.offset=new Integer(offset); |
||
55 | } |
||
56 | |||
57 | public int getCode(){ |
||
58 | return this.code.intValue(); |
||
59 | } |
||
60 | |||
61 | public int getOffset(){ |
||
62 | return this.offset.intValue(); |
||
63 | } |
||
64 | /**
|
||
65 | * Read a pair of int values (the HandleCode and HandleOffset of a handle of a DWG object)
|
||
66 | * from a group of unsigned bytes and initializes the properties.
|
||
67 | *
|
||
68 | * @param data Array of unsigned bytes obtained from the DWG binary file
|
||
69 | * @param offset The current bit offset where the value begins
|
||
70 | * @throws Exception If an unexpected bit value is found in the DWG file. Occurs
|
||
71 | * when we are looking for LwPolylines.
|
||
72 | * @return int Represents the new offset.
|
||
73 | *
|
||
74 | * */
|
||
75 | |||
76 | 10054 | azabala | public int read(int[] data, int offset) throws RuntimeException, CorruptedDwgEntityException{ |
77 | 9992 | fdiaz | ArrayList v = new ArrayList(); |
78 | int code = ((Integer)DwgUtil.getBits(data, 4, offset)).intValue(); |
||
79 | int counter = ((Integer)DwgUtil.getBits(data, 4, (offset + 4))).intValue(); |
||
80 | int read = 8; |
||
81 | ArrayList hlist = new ArrayList(); |
||
82 | if (counter>0) { |
||
83 | int hlen = counter * 8; |
||
84 | Object handle = DwgUtil.getBits(data, hlen, (offset + 8)); |
||
85 | read = read + hlen; |
||
86 | if (hlen > 8) { |
||
87 | byte[] handleBytes = (byte[])handle; |
||
88 | int[] handleInts = new int[handleBytes.length]; |
||
89 | // Hacerlos unsigned ...
|
||
90 | for (int i=0; i<handleBytes.length; i++) { |
||
91 | handleInts[i] = ByteUtils.getUnsigned(handleBytes[i]); |
||
92 | } |
||
93 | for (int i=0; i<handleInts.length; i++) { |
||
94 | hlist.add(new Integer(handleInts[i])); |
||
95 | } |
||
96 | } else {
|
||
97 | hlist.add(handle); |
||
98 | } |
||
99 | } |
||
100 | v.add(new Integer(code)); |
||
101 | v.add(new Integer(counter)); |
||
102 | for (int i=0;i<hlist.size();i++) { |
||
103 | v.add(hlist.get(i)); |
||
104 | } |
||
105 | setCode(code); |
||
106 | setOffset(DwgUtil.handleBinToHandleInt(v)); |
||
107 | return offset+read;
|
||
108 | } |
||
109 | |||
110 | } |