API Overview API Index Package Overview Direct link to this page
JDK 1.6
  java.awt.image. Raster View Javadoc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777

/*
 * @(#)Raster.java	1.64 06/04/07
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/* ****************************************************************
 ******************************************************************
 ******************************************************************
 *** COPYRIGHT (c) Eastman Kodak Company, 1997
 *** As  an unpublished  work pursuant to Title 17 of the United
 *** States Code.  All rights reserved.
 ******************************************************************
 ******************************************************************
 ******************************************************************/


package java.awt.image;
import java.awt.Rectangle;
import java.awt.Point;

import sun.awt.image.ByteInterleavedRaster;
import sun.awt.image.ShortInterleavedRaster;
import sun.awt.image.IntegerInterleavedRaster;
import sun.awt.image.ByteBandedRaster;
import sun.awt.image.ShortBandedRaster;
import sun.awt.image.BytePackedRaster;
import sun.awt.image.SunWritableRaster;

/**
 * A class representing a rectangular array of pixels.  A Raster
 * encapsulates a DataBuffer that stores the sample values and a
 * SampleModel that describes how to locate a given sample value in a
 * DataBuffer.
 * <p>
 * A Raster defines values for pixels occupying a particular
 * rectangular area of the plane, not necessarily including (0, 0).
 * The rectangle, known as the Raster's bounding rectangle and
 * available by means of the getBounds method, is defined by minX,
 * minY, width, and height values.  The minX and minY values define
 * the coordinate of the upper left corner of the Raster.  References
 * to pixels outside of the bounding rectangle may result in an
 * exception being thrown, or may result in references to unintended
 * elements of the Raster's associated DataBuffer.  It is the user's
 * responsibility to avoid accessing such pixels.
 * <p>
 * A SampleModel describes how samples of a Raster
 * are stored in the primitive array elements of a DataBuffer.
 * Samples may be stored one per data element, as in a
 * PixelInterleavedSampleModel or BandedSampleModel, or packed several to
 * an element, as in a SinglePixelPackedSampleModel or
 * MultiPixelPackedSampleModel.  The SampleModel is also
 * controls whether samples are sign extended, allowing unsigned
 * data to be stored in signed Java data types such as byte, short, and
 * int.
 * <p>
 * Although a Raster may live anywhere in the plane, a SampleModel
 * makes use of a simple coordinate system that starts at (0, 0).  A
 * Raster therefore contains a translation factor that allows pixel
 * locations to be mapped between the Raster's coordinate system and
 * that of the SampleModel.  The translation from the SampleModel
 * coordinate system to that of the Raster may be obtained by the
 * getSampleModelTranslateX and getSampleModelTranslateY methods.
 * <p>
 * A Raster may share a DataBuffer with another Raster either by
 * explicit construction or by the use of the createChild and
 * createTranslatedChild methods.  Rasters created by these methods
 * can return a reference to the Raster they were created from by
 * means of the getParent method.  For a Raster that was not
 * constructed by means of a call to createTranslatedChild or
 * createChild, getParent will return null.
 * <p>
 * The createTranslatedChild method returns a new Raster that
 * shares all of the data of the current Raster, but occupies a
 * bounding rectangle of the same width and height but with a
 * different starting point.  For example, if the parent Raster
 * occupied the region (10, 10) to (100, 100), and the translated
 * Raster was defined to start at (50, 50), then pixel (20, 20) of the
 * parent and pixel (60, 60) of the child occupy the same location in
 * the DataBuffer shared by the two Rasters.  In the first case, (-10,
 * -10) should be added to a pixel coordinate to obtain the
 * corresponding SampleModel coordinate, and in the second case (-50,
 * -50) should be added.
 * <p>
 * The translation between a parent and child Raster may be
 * determined by subtracting the child's sampleModelTranslateX and
 * sampleModelTranslateY values from those of the parent.
 * <p>
 * The createChild method may be used to create a new Raster
 * occupying only a subset of its parent's bounding rectangle
 * (with the same or a translated coordinate system) or
 * with a subset of the bands of its parent.
 * <p>
 * All constructors are protected.  The correct way to create a
 * Raster is to use one of the static create methods defined in this
 * class.  These methods create instances of Raster that use the
 * standard Interleaved, Banded, and Packed SampleModels and that may
 * be processed more efficiently than a Raster created by combining
 * an externally generated SampleModel and DataBuffer.
 * @see java.awt.image.DataBuffer
 * @see java.awt.image.SampleModel
 * @see java.awt.image.PixelInterleavedSampleModel
 * @see java.awt.image.BandedSampleModel
 * @see java.awt.image.SinglePixelPackedSampleModel
 * @see java.awt.image.MultiPixelPackedSampleModel
 */
public class Raster {

    /**
     * The SampleModel that describes how pixels from this Raster
     * are stored in the DataBuffer.
     */
    protected SampleModel sampleModel;

    /** The DataBuffer that stores the image data. */
    protected DataBuffer dataBuffer;

    /** The X coordinate of the upper-left pixel of this Raster. */
    protected int minX;

    /** The Y coordinate of the upper-left pixel of this Raster. */
    protected int minY;

    /** The width of this Raster. */
    protected int width;

    /** The height of this Raster. */
    protected int height;

    /**
     * The X translation from the coordinate space of the
     * Raster's SampleModel to that of the Raster.
     */
    protected int sampleModelTranslateX;

    /**
     * The Y translation from the coordinate space of the
     * Raster's SampleModel to that of the Raster.
     */
    protected int sampleModelTranslateY;

    /** The number of bands in the Raster. */
    protected int numBands;

    /** The number of DataBuffer data elements per pixel. */
    protected int numDataElements;

    /** The parent of this Raster, or null. */
    protected Raster parent;

    static private native void initIDs();
    static {
        ColorModel.loadLibraries();
        initIDs();
    }

    /**
     * Creates a Raster based on a PixelInterleavedSampleModel with the
     * specified data type, width, height, and number of bands.
     *
     * <p> The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * The dataType parameter should be one of the enumerated values
     * defined in the DataBuffer class.
     *
     * <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
     * Rasters are not supported.  To create a 1-band Raster of type
     * <code>DataBuffer.TYPE_INT</code>, use
     * Raster.createPackedRaster().
     * <p> The only dataTypes supported currently are TYPE_BYTE
     * and TYPE_USHORT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param bands     the number of bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height and number of bands.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     */
    public static WritableRaster createInterleavedRaster(int dataType,
                                                         int w, int h,
                                                         int bands,
                                                         Point location) {
        int[] bandOffsets = new int[bands];
        for (int i = 0; i < bands; i++) {
            bandOffsets[i] = i;
        }
        return createInterleavedRaster(dataType, w, h, w*bands, bands,
                                       bandOffsets, location);
    }

    /**
     * Creates a Raster based on a PixelInterleavedSampleModel with the
     * specified data type, width, height, scanline stride, pixel
     * stride, and band offsets.  The number of bands is inferred from
     * bandOffsets.length.
     *
     * <p> The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * The dataType parameter should be one of the enumerated values
     * defined in the DataBuffer class.
     *
     * <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
     * Rasters are not supported.  To create a 1-band Raster of type
     * <code>DataBuffer.TYPE_INT</code>, use
     * Raster.createPackedRaster().
     * <p> The only dataTypes supported currently are TYPE_BYTE
     * and TYPE_USHORT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param scanlineStride the line stride of the image data
     * @param pixelStride the pixel stride of the image data
     * @param bandOffsets the offsets of all bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height, scanline stride, pixel stride and band
     *         offsets.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, or 
     *         <code>DataBuffer.TYPE_USHORT</code>.
     */
    public static WritableRaster createInterleavedRaster(int dataType,
                                                         int w, int h,
                                                         int scanlineStride,
                                                         int pixelStride,
                                                         int bandOffsets[],
                                                         Point location) {
	DataBuffer d;
        int bands = bandOffsets.length;

        int maxBandOff = bandOffsets[0];
        for (int i=1; i < bands; i++) {
            if (bandOffsets[i] > maxBandOff) {
                maxBandOff = bandOffsets[i];
            }
        }
        int size = maxBandOff + scanlineStride*(h-1) + pixelStride*(w-1) + 1;
        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            d = new DataBufferByte(size);
            break;

        case DataBuffer.TYPE_USHORT:
            d = new DataBufferUShort(size);
            break;

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }

        SunWritableRaster raster = (SunWritableRaster)
            createInterleavedRaster(d, w, h, scanlineStride,
                                    pixelStride, bandOffsets, location);
        raster.setStolen(false);
        return raster;
    }

    /**
     * Creates a Raster based on a BandedSampleModel with the
     * specified data type, width, height, and number of bands.
     *
     * <p> The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * The dataType parameter should be one of the enumerated values
     * defined in the DataBuffer class.
     *
     * <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
     * and TYPE_INT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param bands     the number of bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height and number of bands.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws ArrayIndexOutOfBoundsException if <code>bands</code>
     *         is less than 1
     */
    public static WritableRaster createBandedRaster(int dataType,
                                                    int w, int h,
                                                    int bands,
                                                    Point location) {
        if (bands < 1) {
            throw new ArrayIndexOutOfBoundsException("Number of bands ("+
                                                     bands+") must"+
                                                     " be greater than 0");
        }
        int[] bankIndices = new int[bands];
        int[] bandOffsets = new int[bands];
        for (int i = 0; i < bands; i++) {
            bankIndices[i] = i;
            bandOffsets[i] = 0;
        }

        return createBandedRaster(dataType, w, h, w,
                                  bankIndices, bandOffsets,
                                  location);
    }

    /**
     * Creates a Raster based on a BandedSampleModel with the
     * specified data type, width, height, scanline stride, bank
     * indices and band offsets.  The number of bands is inferred from
     * bankIndices.length and bandOffsets.length, which must be the
     * same.
     *
     * <p> The upper left corner of the Raster is given by the
     * location argument.  The dataType parameter should be one of the
     * enumerated values defined in the DataBuffer class.
     *
     * <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
     * and TYPE_INT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param scanlineStride the line stride of the image data
     * @param bankIndices the bank indices for each band
     * @param bandOffsets the offsets of all bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height, scanline stride, bank indices and band
     *         offsets.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>
     * @throws ArrayIndexOutOfBoundsException if <code>bankIndices</code> 
     *         or <code>bandOffsets</code> is <code>null</code>
     */
    public static WritableRaster createBandedRaster(int dataType,
                                                    int w, int h,
                                                    int scanlineStride,
                                                    int bankIndices[],
                                                    int bandOffsets[],
                                                    Point location) {
	DataBuffer d;
        int bands = bandOffsets.length;

        if (bankIndices == null) {
            throw new
                ArrayIndexOutOfBoundsException("Bank indices array is null");
        }
        if (bandOffsets == null) {
            throw new
                ArrayIndexOutOfBoundsException("Band offsets array is null");
        }

        // Figure out the #banks and the largest band offset
        int maxBank = bankIndices[0];
        int maxBandOff = bandOffsets[0];
        for (int i = 1; i < bands; i++) {
            if (bankIndices[i] > maxBank) {
                maxBank = bankIndices[i];
            }
            if (bandOffsets[i] > maxBandOff) {
                maxBandOff = bandOffsets[i];
            }
        }
        int banks = maxBank + 1;
        int size = maxBandOff + scanlineStride*(h-1) + (w-1) + 1;

        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            d = new DataBufferByte(size, banks);
            break;

        case DataBuffer.TYPE_USHORT:
            d = new DataBufferUShort(size, banks);
            break;

        case DataBuffer.TYPE_INT:
            d = new DataBufferInt(size, banks);
            break;

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }

        SunWritableRaster raster = (SunWritableRaster)
            createBandedRaster(d, w, h, scanlineStride,
                               bankIndices, bandOffsets, location);
        raster.setStolen(false);
        return raster;
    }

    /**
     * Creates a Raster based on a SinglePixelPackedSampleModel with
     * the specified data type, width, height, and band masks.
     * The number of bands is inferred from bandMasks.length.
     * 
     * <p> The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * The dataType parameter should be one of the enumerated values
     * defined in the DataBuffer class.
     *
     * <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
     * and TYPE_INT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param bandMasks an array containing an entry for each band
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height, and band masks.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>
     */
    public static WritableRaster createPackedRaster(int dataType,
                                                    int w, int h,
                                                    int bandMasks[],
                                                    Point location) {
        DataBuffer d;

        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            d = new DataBufferByte(w*h);
            break;

        case DataBuffer.TYPE_USHORT:
            d = new DataBufferUShort(w*h);
            break;

        case DataBuffer.TYPE_INT:
            d = new DataBufferInt(w*h);
            break;

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }

        SunWritableRaster raster = (SunWritableRaster)
            createPackedRaster(d, w, h, w, bandMasks, location);
        raster.setStolen(false);
        return raster;
    }

    /**
     * Creates a Raster based on a packed SampleModel with the
     * specified data type, width, height, number of bands, and bits
     * per band.  If the number of bands is one, the SampleModel will
     * be a MultiPixelPackedSampleModel.
     *
     * <p> If the number of bands is more than one, the SampleModel
     * will be a SinglePixelPackedSampleModel, with each band having
     * bitsPerBand bits.  In either case, the requirements on dataType
     * and bitsPerBand imposed by the corresponding SampleModel must
     * be met.
     *
     * <p> The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * The dataType parameter should be one of the enumerated values
     * defined in the DataBuffer class.
     *
     * <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
     * and TYPE_INT.
     * @param dataType  the data type for storing samples
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param bands     the number of bands
     * @param bitsPerBand the number of bits per band
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified data type,
     *         width, height, number of bands, and bits per band.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if the product of 
     *         <code>bitsPerBand</code> and <code>bands</code> is 
     *         greater than the number of bits held by 
     *         <code>dataType</code>
     * @throws IllegalArgumentException if <code>bitsPerBand</code> or
     *         <code>bands</code> is not greater than zero  
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>     
     */
    public static WritableRaster createPackedRaster(int dataType,
                                                    int w, int h,
                                                    int bands,
                                                    int bitsPerBand,
                                                    Point location) {
        DataBuffer d;

        if (bands <= 0) {
            throw new IllegalArgumentException("Number of bands ("+bands+
                                               ") must be greater than 0");
        }

        if (bitsPerBand <= 0) {
            throw new IllegalArgumentException("Bits per band ("+bitsPerBand+
                                               ") must be greater than 0");
        }
        
        if (bands != 1) {
            int[] masks = new int[bands];
            int mask = (1 << bitsPerBand) - 1;
            int shift = (bands-1)*bitsPerBand;

            /* Make sure the total mask size will fit in the data type */
            if (shift+bitsPerBand > DataBuffer.getDataTypeSize(dataType)) {
                throw new IllegalArgumentException("bitsPerBand("+
                                                   bitsPerBand+") * bands is "+
                                                   " greater than data type "+
                                                   "size.");
            }
            switch(dataType) {
            case DataBuffer.TYPE_BYTE:
            case DataBuffer.TYPE_USHORT:
            case DataBuffer.TYPE_INT:
                break;
            default:
                throw new IllegalArgumentException("Unsupported data type " +
                                                    dataType);
            }

            for (int i = 0; i < bands; i++) {
                masks[i] = mask << shift;
                shift = shift - bitsPerBand;
            }

            return createPackedRaster(dataType, w, h, masks, location);
        }
        else {
            double fw = w;
            switch(dataType) {
            case DataBuffer.TYPE_BYTE:
                d = new DataBufferByte((int)(Math.ceil(fw/(8/bitsPerBand)))*h);
                break;

            case DataBuffer.TYPE_USHORT:
                d = new DataBufferUShort((int)(Math.ceil(fw/(16/bitsPerBand)))*h);
                break;

            case DataBuffer.TYPE_INT:
                d = new DataBufferInt((int)(Math.ceil(fw/(32/bitsPerBand)))*h);
                break;

            default:
                throw new IllegalArgumentException("Unsupported data type " +
                                                   dataType);
            }

            SunWritableRaster raster = (SunWritableRaster)
                createPackedRaster(d, w, h, bitsPerBand, location);
            raster.setStolen(false);
            return raster;
        }
    }

    /**
     * Creates a Raster based on a PixelInterleavedSampleModel with the
     * specified DataBuffer, width, height, scanline stride, pixel
     * stride, and band offsets.  The number of bands is inferred from
     * bandOffsets.length.  The upper left corner of the Raster
     * is given by the location argument.  If location is null, (0, 0)
     * will be used.
     * <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
     * Rasters are not supported.  To create a 1-band Raster of type
     * <code>DataBuffer.TYPE_INT</code>, use
     * Raster.createPackedRaster().
     * @param dataBuffer the <code>DataBuffer</code> that contains the
     *        image data
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param scanlineStride the line stride of the image data
     * @param pixelStride the pixel stride of the image data
     * @param bandOffsets the offsets of all bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified
     *         <code>DataBuffer</code>, width, height, scanline stride, 
     *         pixel stride and band offsets.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code>
     * @throws RasterFormatException if <code>dataBuffer</code> has more
     *         than one bank.
     * @throws NullPointerException if <code>dataBuffer</code> is null
     */
    public static WritableRaster createInterleavedRaster(DataBuffer dataBuffer,
                                                         int w, int h,
                                                         int scanlineStride,
                                                         int pixelStride,
                                                         int bandOffsets[],
                                                         Point location) {
        if (dataBuffer == null) {
            throw new NullPointerException("DataBuffer cannot be null");
        }
        if (location == null) {
            location = new Point(0, 0);
        }
        int dataType = dataBuffer.getDataType();

        PixelInterleavedSampleModel csm =
            new PixelInterleavedSampleModel(dataType, w, h,
                                            pixelStride,
                                            scanlineStride,
                                            bandOffsets);
        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            return new ByteInterleavedRaster(csm, dataBuffer, location);

        case DataBuffer.TYPE_USHORT:
            return new ShortInterleavedRaster(csm, dataBuffer, location);

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }
    }

    /**
     * Creates a Raster based on a BandedSampleModel with the
     * specified DataBuffer, width, height, scanline stride, bank
     * indices, and band offsets.  The number of bands is inferred
     * from bankIndices.length and bandOffsets.length, which must be
     * the same.  The upper left corner of the Raster is given by the
     * location argument.  If location is null, (0, 0) will be used.
     * @param dataBuffer the <code>DataBuffer</code> that contains the
     *        image data
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param scanlineStride the line stride of the image data
     * @param bankIndices the bank indices for each band
     * @param bandOffsets the offsets of all bands
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified
     *         <code>DataBuffer</code>, width, height, scanline stride, 
     *         bank indices and band offsets.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>
     * @throws NullPointerException if <code>dataBuffer</code> is null
     */
    public static WritableRaster createBandedRaster(DataBuffer dataBuffer,
                                                    int w, int h,
                                                    int scanlineStride,
                                                    int bankIndices[],
                                                    int bandOffsets[],
                                                    Point location) {
        if (dataBuffer == null) {
            throw new NullPointerException("DataBuffer cannot be null");
        }
        if (location == null) {
           location = new Point(0,0);
        }
        int dataType = dataBuffer.getDataType();

        int bands = bankIndices.length;
        if (bandOffsets.length != bands) {
            throw new IllegalArgumentException(
                                   "bankIndices.length != bandOffsets.length");
        }

        BandedSampleModel bsm =
            new BandedSampleModel(dataType, w, h,
                                  scanlineStride,
                                  bankIndices, bandOffsets);

        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            return new ByteBandedRaster(bsm, dataBuffer, location);

        case DataBuffer.TYPE_USHORT:
            return new ShortBandedRaster(bsm, dataBuffer, location);

        case DataBuffer.TYPE_INT:
            return new SunWritableRaster(bsm, dataBuffer, location);

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }
    }

    /**
     * Creates a Raster based on a SinglePixelPackedSampleModel with
     * the specified DataBuffer, width, height, scanline stride, and
     * band masks.  The number of bands is inferred from bandMasks.length.
     * The upper left corner of the Raster is given by
     * the location argument.  If location is null, (0, 0) will be used.
     * @param dataBuffer the <code>DataBuffer</code> that contains the
     *        image data
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param scanlineStride the line stride of the image data
     * @param bandMasks an array containing an entry for each band
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified
     *         <code>DataBuffer</code>, width, height, scanline stride, 
     *         and band masks.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>
     * @throws RasterFormatException if <code>dataBuffer</code> has more
     *         than one bank.
     * @throws NullPointerException if <code>dataBuffer</code> is null
     */
    public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
                                                    int w, int h,
                                                    int scanlineStride,
                                                    int bandMasks[],
                                                    Point location) {
        if (dataBuffer == null) {
            throw new NullPointerException("DataBuffer cannot be null");
        }
        if (location == null) {
           location = new Point(0,0);
        }
        int dataType = dataBuffer.getDataType();

        SinglePixelPackedSampleModel sppsm =
            new SinglePixelPackedSampleModel(dataType, w, h, scanlineStride,
                                             bandMasks);

        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            return new ByteInterleavedRaster(sppsm, dataBuffer, location);

        case DataBuffer.TYPE_USHORT:
            return new ShortInterleavedRaster(sppsm, dataBuffer, location);

        case DataBuffer.TYPE_INT:
            return new IntegerInterleavedRaster(sppsm, dataBuffer, location);

        default:
            throw new IllegalArgumentException("Unsupported data type " +
                                                dataType);
        }
    }

    /**
     * Creates a Raster based on a MultiPixelPackedSampleModel with the
     * specified DataBuffer, width, height, and bits per pixel.  The upper
     * left corner of the Raster is given by the location argument.  If
     * location is null, (0, 0) will be used.
     * @param dataBuffer the <code>DataBuffer</code> that contains the
     *        image data
     * @param w         the width in pixels of the image data
     * @param h         the height in pixels of the image data
     * @param bitsPerPixel the number of bits for each pixel
     * @param location  the upper-left corner of the <code>Raster</code>
     * @return a WritableRaster object with the specified
     *         <code>DataBuffer</code>, width, height, and
     *         bits per pixel.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>location.x + w</code> or
     *         <code>location.y + h</code> results in integer
     *         overflow
     * @throws IllegalArgumentException if <code>dataType</code> is not
     *         one of the supported data types, which are
     *         <code>DataBuffer.TYPE_BYTE</code>, 
     *         <code>DataBuffer.TYPE_USHORT</code> 
     *         or <code>DataBuffer.TYPE_INT</code>
     * @throws RasterFormatException if <code>dataBuffer</code> has more
     *         than one bank.
     * @throws NullPointerException if <code>dataBuffer</code> is null
     */
    public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
                                                    int w, int h,
                                                    int bitsPerPixel,
                                                    Point location) {
        if (dataBuffer == null) {
            throw new NullPointerException("DataBuffer cannot be null");
        }
        if (location == null) {
           location = new Point(0,0);
        }
        int dataType = dataBuffer.getDataType();

        if (dataType != DataBuffer.TYPE_BYTE &&
            dataType != DataBuffer.TYPE_USHORT &&
            dataType != DataBuffer.TYPE_INT) {
            throw new IllegalArgumentException("Unsupported data type " +
                                               dataType);
        }

        if (dataBuffer.getNumBanks() != 1) {
            throw new 
                RasterFormatException("DataBuffer for packed Rasters"+
                                      " must only have 1 bank.");
        }
        
        MultiPixelPackedSampleModel mppsm =
                new MultiPixelPackedSampleModel(dataType, w, h, bitsPerPixel);

        if (dataType == DataBuffer.TYPE_BYTE &&
            (bitsPerPixel == 1 || bitsPerPixel == 2 || bitsPerPixel == 4)) {
            return new BytePackedRaster(mppsm, dataBuffer, location);
        } else {
            return new SunWritableRaster(mppsm, dataBuffer, location);
        }
    }


    /**
     *  Creates a Raster with the specified SampleModel and DataBuffer.
     *  The upper left corner of the Raster is given by the location argument.
     *  If location is null, (0, 0) will be used.
     *  @param sm the specified <code>SampleModel</code>
     *  @param db the specified <code>DataBuffer</code>
     *  @param location the upper-left corner of the <code>Raster</code>
     *  @return a <code>Raster</code> with the specified 
     *          <code>SampleModel</code>, <code>DataBuffer</code>, and
     *          location.
     * @throws RasterFormatException if computing either
     *         <code>location.x + sm.getWidth()</code> or
     *         <code>location.y + sm.getHeight()</code> results in integer
     *         overflow
     * @throws RasterFormatException if <code>dataBuffer</code> has more
     *         than one bank and the <code>sampleModel</code> is
     *         PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
     *         or MultiPixelPackedSampleModel.
     *  @throws NullPointerException if either SampleModel or DataBuffer is 
     *          null
     */
    public static Raster createRaster(SampleModel sm,
                                      DataBuffer db,
                                      Point location) {
        if ((sm == null) || (db == null)) {
            throw new NullPointerException("SampleModel and DataBuffer cannot be null");
        }
        
        if (location == null) {
           location = new Point(0,0);
        }
        int dataType = sm.getDataType();

        if (sm instanceof PixelInterleavedSampleModel) {
            switch(dataType) {
                case DataBuffer.TYPE_BYTE:
                    return new ByteInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_USHORT:
                    return new ShortInterleavedRaster(sm, db, location);
            }
        } else if (sm instanceof SinglePixelPackedSampleModel) {
            switch(dataType) {
                case DataBuffer.TYPE_BYTE:
                    return new ByteInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_USHORT:
                    return new ShortInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_INT:
                    return new IntegerInterleavedRaster(sm, db, location);
            }
        } else if (sm instanceof MultiPixelPackedSampleModel &&
                   dataType == DataBuffer.TYPE_BYTE &&
                   sm.getSampleSize(0) < 8) {
            return new BytePackedRaster(sm, db, location);
        }

        // we couldn't do anything special - do the generic thing

        return new Raster(sm,db,location);
    }

    /**
     *  Creates a WritableRaster with the specified SampleModel.
     *  The upper left corner of the Raster is given by the location argument.
     *  If location is null, (0, 0) will be used.
     *  @param sm the specified <code>SampleModel</code>
     *  @param location the upper-left corner of the 
     *         <code>WritableRaster</code>
     *  @return a <code>WritableRaster</code> with the specified 
     *          <code>SampleModel</code> and location.
     *  @throws RasterFormatException if computing either
     *          <code>location.x + sm.getWidth()</code> or
     *          <code>location.y + sm.getHeight()</code> results in integer
     *          overflow
     */
    public static WritableRaster createWritableRaster(SampleModel sm,
                                                      Point location) {
        if (location == null) {
           location = new Point(0,0);
        }

        SunWritableRaster raster = (SunWritableRaster)
            createWritableRaster(sm, sm.createDataBuffer(), location);
        raster.setStolen(false);
        return raster;
    }

    /**
     *  Creates a WritableRaster with the specified SampleModel and DataBuffer.
     *  The upper left corner of the Raster is given by the location argument.
     *  If location is null, (0, 0) will be used.
     *  @param sm the specified <code>SampleModel</code>
     *  @param db the specified <code>DataBuffer</code>
     *  @param location the upper-left corner of the 
     *         <code>WritableRaster</code>
     *  @return a <code>WritableRaster</code> with the specified 
     *          <code>SampleModel</code>, <code>DataBuffer</code>, and
     *          location.
     * @throws RasterFormatException if computing either
     *         <code>location.x + sm.getWidth()</code> or
     *         <code>location.y + sm.getHeight()</code> results in integer
     *         overflow
     * @throws RasterFormatException if <code>dataBuffer</code> has more
     *         than one bank and the <code>sampleModel</code> is
     *         PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
     *         or MultiPixelPackedSampleModel.
     * @throws NullPointerException if either SampleModel or DataBuffer is null
     */
    public static WritableRaster createWritableRaster(SampleModel sm,
                                                      DataBuffer db,
                                                      Point location) {
        if ((sm == null) || (db == null)) {
            throw new NullPointerException("SampleModel and DataBuffer cannot be null");
        }
        if (location == null) {
           location = new Point(0,0);
        }

        int dataType = sm.getDataType();

        if (sm instanceof PixelInterleavedSampleModel) {
            switch(dataType) {
                case DataBuffer.TYPE_BYTE:
                    return new ByteInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_USHORT:
                    return new ShortInterleavedRaster(sm, db, location);
            }
        } else if (sm instanceof SinglePixelPackedSampleModel) {
            switch(dataType) {
                case DataBuffer.TYPE_BYTE:
                    return new ByteInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_USHORT:
                    return new ShortInterleavedRaster(sm, db, location);

                case DataBuffer.TYPE_INT:
                    return new IntegerInterleavedRaster(sm, db, location);
            }
        } else if (sm instanceof MultiPixelPackedSampleModel &&
                   dataType == DataBuffer.TYPE_BYTE &&
                   sm.getSampleSize(0) < 8) {
            return new BytePackedRaster(sm, db, location);
        }

        // we couldn't do anything special - do the generic thing

        return new SunWritableRaster(sm,db,location);
    }

    /**
     *  Constructs a Raster with the given SampleModel.  The Raster's
     *  upper left corner is origin and it is the same size as the
     *  SampleModel.  A DataBuffer large enough to describe the
     *  Raster is automatically created.
     *  @param sampleModel     The SampleModel that specifies the layout
     *  @param origin          The Point that specified the origin
     *  @throws RasterFormatException if computing either
     *          <code>origin.x + sampleModel.getWidth()</code> or
     *          <code>origin.y + sampleModel.getHeight()</code> results in
     *          integer overflow
     *  @throws NullPointerException either <code>sampleModel</code> or 
     *          <code>origin</code> is null
     */
    protected Raster(SampleModel sampleModel,
                     Point origin) {
        this(sampleModel,
             sampleModel.createDataBuffer(),
             new Rectangle(origin.x,
                           origin.y,
                           sampleModel.getWidth(),
                           sampleModel.getHeight()),
             origin,
             null);
    }

    /**
     *  Constructs a Raster with the given SampleModel and DataBuffer.
     *  The Raster's upper left corner is origin and it is the same size
     *  as the SampleModel.  The DataBuffer is not initialized and must
     *  be compatible with SampleModel.
     *  @param sampleModel     The SampleModel that specifies the layout
     *  @param dataBuffer      The DataBuffer that contains the image data
     *  @param origin          The Point that specifies the origin
     *  @throws RasterFormatException if computing either
     *          <code>origin.x + sampleModel.getWidth()</code> or
     *          <code>origin.y + sampleModel.getHeight()</code> results in
     *          integer overflow
     *  @throws NullPointerException either <code>sampleModel</code> or
     *          <code>origin</code> is null
     */
    protected Raster(SampleModel sampleModel,
                     DataBuffer dataBuffer,
                     Point origin) {
	this(sampleModel,
             dataBuffer,
             new Rectangle(origin.x,
                           origin.y,
                           sampleModel.getWidth(),
                           sampleModel.getHeight()),
             origin,
             null);
    }

    /**
     * Constructs a Raster with the given SampleModel, DataBuffer, and
     * parent.  aRegion specifies the bounding rectangle of the new
     * Raster.  When translated into the base Raster's coordinate
     * system, aRegion must be contained by the base Raster.
     * (The base Raster is the Raster's ancestor which has no parent.)
     * sampleModelTranslate specifies the sampleModelTranslateX and
     * sampleModelTranslateY values of the new Raster.
     *
     * Note that this constructor should generally be called by other
     * constructors or create methods, it should not be used directly.
     * @param sampleModel     The SampleModel that specifies the layout
     * @param dataBuffer      The DataBuffer that contains the image data
     * @param aRegion         The Rectangle that specifies the image area     
     * @param sampleModelTranslate  The Point that specifies the translation
     *                        from SampleModel to Raster coordinates
     * @param parent          The parent (if any) of this raster
     * @throws NullPointerException if any of <code>sampleModel</code>, 
     *         <code>dataBuffer</code>, <code>aRegion</code> or 
     *         <code>sampleModelTranslate</code> is null
     * @throws RasterFormatException if <code>aRegion</code> has width
     *         or height less than or equal to zero, or computing either
     *         <code>aRegion.x + aRegion.width</code> or
     *         <code>aRegion.y + aRegion.height</code> results in integer
     *         overflow
     */
    protected Raster(SampleModel sampleModel,
                     DataBuffer dataBuffer,
                     Rectangle aRegion,
                     Point sampleModelTranslate,
	             Raster parent) {
        
        if ((sampleModel == null) || (dataBuffer == null) || 
            (aRegion == null) || (sampleModelTranslate == null)) {
            throw new NullPointerException("SampleModel, dataBuffer, aRegion and " +
                                           "sampleModelTranslate cannot be null");
        }
       this.sampleModel = sampleModel;
       this.dataBuffer = dataBuffer;
       minX = aRegion.x;
       minY = aRegion.y;
       width = aRegion.width;
       height = aRegion.height;
       if (width <= 0 || height <= 0) {
           throw new RasterFormatException("negative or zero " +
               ((width <= 0) ? "width" : "height"));
       }
       if ((minX + width) < minX) {
           throw new RasterFormatException(
               "overflow condition for X coordinates of Raster");
       }
       if ((minY + height) < minY) {
           throw new RasterFormatException(
               "overflow condition for Y coordinates of Raster");
       }
 
       sampleModelTranslateX = sampleModelTranslate.x;
       sampleModelTranslateY = sampleModelTranslate.y;

       numBands = sampleModel.getNumBands();
       numDataElements = sampleModel.getNumDataElements();
       this.parent = parent;
    }


    /** 
     * Returns the parent Raster (if any) of this Raster or null. 
     * @return the parent Raster or <code>null</code>.
     */
    public Raster getParent() {
        return parent;
    }

    /**
     * Returns the X translation from the coordinate system of the
     * SampleModel to that of the Raster.  To convert a pixel's X
     * coordinate from the Raster coordinate system to the SampleModel
     * coordinate system, this value must be subtracted.
     * @return the X translation from the coordinate space of the
     *         Raster's SampleModel to that of the Raster.
     */
    final public int getSampleModelTranslateX() {
	return sampleModelTranslateX;
    }

    /**
     * Returns the Y translation from the coordinate system of the
     * SampleModel to that of the Raster.  To convert a pixel's Y
     * coordinate from the Raster coordinate system to the SampleModel
     * coordinate system, this value must be subtracted.
     * @return the Y translation from the coordinate space of the
     *         Raster's SampleModel to that of the Raster.
     */
    final public int getSampleModelTranslateY() {
	return sampleModelTranslateY;
    }

    /**
     * Create a compatible WritableRaster the same size as this Raster with
     * the same SampleModel and a new initialized DataBuffer.
     * @return a compatible <code>WritableRaster</code> with the same sample
     *         model and a new data buffer.
     */
    public WritableRaster createCompatibleWritableRaster() {
        return new SunWritableRaster(sampleModel, new Point(0,0));
    }

    /**
     * Create a compatible WritableRaster with the specified size, a new
     * SampleModel, and a new initialized DataBuffer.
     * @param w the specified width of the new <code>WritableRaster</code>
     * @param h the specified height of the new <code>WritableRaster</code>
     * @return a compatible <code>WritableRaster</code> with the specified 
     *         size and a new sample model and data buffer.
     * @exception RasterFormatException if the width or height is less than
     *                               or equal to zero.
     */
    public WritableRaster createCompatibleWritableRaster(int w, int h) {
        if (w <= 0 || h <=0) {
            throw new RasterFormatException("negative " +
                                          ((w <= 0) ? "width" : "height"));
        }

        SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);

        return new SunWritableRaster(sm, new Point(0,0));
    }

    /**
     * Create a compatible WritableRaster with location (minX, minY)
     * and size (width, height) specified by rect, a
     * new SampleModel, and a new initialized DataBuffer.
     * @param rect a <code>Rectangle</code> that specifies the size and
     *        location of the <code>WritableRaster</code>
     * @return a compatible <code>WritableRaster</code> with the specified 
     *         size and location and a new sample model and data buffer.
     * @throws RasterFormatException if <code>rect</code> has width
     *         or height less than or equal to zero, or computing either
     *         <code>rect.x + rect.width</code> or
     *         <code>rect.y + rect.height</code> results in integer
     *         overflow
     * @throws NullPointerException if <code>rect</code> is null
     */
    public WritableRaster createCompatibleWritableRaster(Rectangle rect) {
        if (rect == null) {
            throw new NullPointerException("Rect cannot be null");
        }
        return createCompatibleWritableRaster(rect.x, rect.y,
                                              rect.width, rect.height);
    }

    /**
     * Create a compatible WritableRaster with the specified
     * location (minX, minY) and size (width, height), a
     * new SampleModel, and a new initialized DataBuffer.
     * @param x the X coordinate of the upper-left corner of
     *        the <code>WritableRaster</code>
     * @param y the Y coordinate of the upper-left corner of
     *        the <code>WritableRaster</code>
     * @param w the specified width of the <code>WritableRaster</code>
     * @param h the specified height of the <code>WritableRaster</code>
     * @return a compatible <code>WritableRaster</code> with the specified 
     *         size and location and a new sample model and data buffer.
     * @throws RasterFormatException if <code>w</code> or <code>h</code>
     *         is less than or equal to zero, or computing either
     *         <code>x + w</code> or
     *         <code>y + h</code> results in integer
     *         overflow
     */
    public WritableRaster createCompatibleWritableRaster(int x, int y,
                                                         int w, int h) {
        WritableRaster ret = createCompatibleWritableRaster(w, h);
        return ret.createWritableChild(0,0,w,h,x,y,null);
    }

    /**
     * Create a Raster with the same size, SampleModel and DataBuffer
     * as this one, but with a different location.  The new Raster
     * will possess a reference to the current Raster, accessible
     * through its getParent() method.
     * 
     * @param childMinX the X coordinate of the upper-left 
     *        corner of the new <code>Raster</code>
     * @param childMinY the Y coordinate of the upper-left 
     *        corner of the new <code>Raster</code>
     * @return a new <code>Raster</code> with the same size, SampleModel, 
     *         and DataBuffer as this <code>Raster</code>, but with the
     *         specified location.
     * @throws RasterFormatException if  computing either
     *         <code>childMinX + this.getWidth()</code> or
     *         <code>childMinY + this.getHeight()</code> results in integer
     *         overflow
     */
    public Raster createTranslatedChild(int childMinX, int childMinY) {
        return createChild(minX,minY,width,height,
                           childMinX,childMinY,null);
    }

    /**
     * Returns a new Raster which shares all or part of this Raster's
     * DataBuffer.  The new Raster will possess a reference to the
     * current Raster, accessible through its getParent() method.
     *
     * <p> The parentX, parentY, width and height parameters
     * form a Rectangle in this Raster's coordinate space,
     * indicating the area of pixels to be shared.  An error will
     * be thrown if this Rectangle is not contained with the bounds
     * of the current Raster.
     *
     * <p> The new Raster may additionally be translated to a
     * different coordinate system for the plane than that used by the current
     * Raster.  The childMinX and childMinY parameters give the new
     * (x, y) coordinate of the upper-left pixel of the returned
     * Raster; the coordinate (childMinX, childMinY) in the new Raster
     * will map to the same pixel as the coordinate (parentX, parentY)
     * in the current Raster.
     *
     * <p> The new Raster may be defined to contain only a subset of
     * the bands of the current Raster, possibly reordered, by means
     * of the bandList parameter.  If bandList is null, it is taken to
     * include all of the bands of the current Raster in their current
     * order.
     *
     * <p> To create a new Raster that contains a subregion of the current
     * Raster, but shares its coordinate system and bands,
     * this method should be called with childMinX equal to parentX,
     * childMinY equal to parentY, and bandList equal to null.
     *
     * @param parentX The X coordinate of the upper-left corner 
     *        in this Raster's coordinates
     * @param parentY The Y coordinate of the upper-left corner 
     *        in this Raster's coordinates
     * @param width      Width of the region starting at (parentX, parentY)
     * @param height     Height of the region starting at (parentX, parentY).
     * @param childMinX The X coordinate of the upper-left corner 
     *                   of the returned Raster
     * @param childMinY The Y coordinate of the upper-left corner 
     *                   of the returned Raster
     * @param bandList   Array of band indices, or null to use all bands
     * @return a new <code>Raster</code>.
     * @exception RasterFormatException if the specified subregion is outside
     *                               of the raster bounds.
     * @throws RasterFormatException if <code>width</code> or
     *         <code>height</code>
     *         is less than or equal to zero, or computing any of
     *         <code>parentX + width</code>, <code>parentY + height</code>,
     *         <code>childMinX + width</code>, or
     *         <code>childMinY + height</code> results in integer
     *         overflow
     */
    public Raster createChild(int parentX, int parentY,
                              int width, int height,
                              int childMinX, int childMinY,
                              int bandList[]) {
        if (parentX < this.minX) {
            throw new RasterFormatException("parentX lies outside raster");
        }
        if (parentY < this.minY) {
            throw new RasterFormatException("parentY lies outside raster");
        }
        if ((parentX + width < parentX) ||
            (parentX + width > this.width + this.minX)) {
            throw new RasterFormatException("(parentX + width) is outside raster");
        }
        if ((parentY + height < parentY) ||
            (parentY + height > this.height + this.minY)) {
            throw new RasterFormatException("(parentY + height) is outside raster");
        }

        SampleModel subSampleModel;
        // Note: the SampleModel for the child Raster should have the same
        // width and height as that for the parent, since it represents
        // the physical layout of the pixel data.  The child Raster's width
        // and height represent a "virtual" view of the pixel data, so
        // they may be different than those of the SampleModel.
        if (bandList == null) {
            subSampleModel = sampleModel;
        } else {
            subSampleModel = sampleModel.createSubsetSampleModel(bandList);
        }

        int deltaX = childMinX - parentX;
        int deltaY = childMinY - parentY;

        // we use getDataBuffer() here, which will ensure that notifyStolen()
        // is invoked if this is a SunWritableRaster, thus disabling future
        // acceleration of this WritableRaster
	return new Raster(subSampleModel, getDataBuffer(),
			  new Rectangle(childMinX, childMinY, width, height),
			  new Point(sampleModelTranslateX + deltaX,
				    sampleModelTranslateY + deltaY), this);
    }

    /**
     * Returns the bounding Rectangle of this Raster. This function returns
     * the same information as getMinX/MinY/Width/Height.
     * @return the bounding box of this <code>Raster</code>.
     */
    public Rectangle getBounds() {
        return new Rectangle(minX, minY, width, height);
    }

    /** Returns the minimum valid X coordinate of the Raster.
     *  @return the minimum x coordinate of this <code>Raster</code>.
     */
    final public int getMinX() {
        return minX;
    }

    /** Returns the minimum valid Y coordinate of the Raster. 
     *  @return the minimum y coordinate of this <code>Raster</code>.
     */
    final public int getMinY() {
        return minY;
    }

    /** Returns the width in pixels of the Raster.  
     *  @return the width of this <code>Raster</code>.
     */
    final public int getWidth() {
        return width;
    }

    /** Returns the height in pixels of the Raster.  
     *  @return the height of this <code>Raster</code>.
     */
    final public int getHeight() {
        return height;
    }

    /** Returns the number of bands (samples per pixel) in this Raster. 
     *  @return the number of bands of this <code>Raster</code>.
     */
    final public int getNumBands() {
        return numBands;
    }

    /** 
     *  Returns the number of data elements needed to transfer one pixel
     *  via the getDataElements and setDataElements methods.  When pixels
     *  are transferred via these methods, they may be transferred in a
     *  packed or unpacked format, depending on the implementation of the
     *  underlying SampleModel.  Using these methods, pixels are transferred
     *  as an array of getNumDataElements() elements of a primitive type given
     *  by getTransferType().  The TransferType may or may not be the same
     *  as the storage data type of the DataBuffer.
     *  @return the number of data elements.
     */
    final public int getNumDataElements() {
        return sampleModel.getNumDataElements();
    }

    /** 
     *  Returns the TransferType used to transfer pixels via the
     *  getDataElements and setDataElements methods.  When pixels
     *  are transferred via these methods, they may be transferred in a
     *  packed or unpacked format, depending on the implementation of the
     *  underlying SampleModel.  Using these methods, pixels are transferred
     *  as an array of getNumDataElements() elements of a primitive type given
     *  by getTransferType().  The TransferType may or may not be the same
     *  as the storage data type of the DataBuffer.  The TransferType will
     *  be one of the types defined in DataBuffer.
     *  @return this transfer type.
     */
    final public int getTransferType() {
        return sampleModel.getTransferType();
    }

    /** Returns the DataBuffer associated with this Raster. 
     *  @return the <code>DataBuffer</code> of this <code>Raster</code>.
     */
    public DataBuffer getDataBuffer() {
        return dataBuffer;
    }

    /** Returns the SampleModel that describes the layout of the image data. 
     *  @return the <code>SampleModel</code> of this <code>Raster</code>.
     */
    public SampleModel getSampleModel() {
        return sampleModel;
    }

    /**
     * Returns data for a single pixel in a primitive array of type
     * TransferType.  For image data supported by the Java 2D(tm) API, 
     * this will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, 
     * DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
     * or DataBuffer.TYPE_DOUBLE.  Data may be returned in a packed format,
     * thus increasing efficiency for data transfers.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * A ClassCastException will be thrown if the input object is non null
     * and references anything other than an array of TransferType.
     * @see java.awt.image.SampleModel#getDataElements(int, int, Object, DataBuffer)
     * @param x        The X coordinate of the pixel location
     * @param y        The Y coordinate of the pixel location
     * @param outData  An object reference to an array of type defined by
     *                 getTransferType() and length getNumDataElements(). 
     *                 If null, an array of appropriate type and size will be
     *                 allocated
     * @return         An object reference to an array of type defined by
     *                 getTransferType() with the requested pixel data.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if outData is too small to hold the output.
     */
    public Object getDataElements(int x, int y, Object outData) {
        return sampleModel.getDataElements(x - sampleModelTranslateX,
                                           y - sampleModelTranslateY,
                                           outData, dataBuffer);
    }

    /**
     * Returns the pixel data for the specified rectangle of pixels in a
     * primitive array of type TransferType.
     * For image data supported by the Java 2D API, this
     * will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
     * DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
     * or DataBuffer.TYPE_DOUBLE.  Data may be returned in a packed format,
     * thus increasing efficiency for data transfers.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * A ClassCastException will be thrown if the input object is non null
     * and references anything other than an array of TransferType.
     * @see java.awt.image.SampleModel#getDataElements(int, int, int, int, Object, DataBuffer)
     * @param x    The X coordinate of the upper-left pixel location
     * @param y    The Y coordinate of the upper-left pixel location
     * @param w    Width of the pixel rectangle
     * @param h   Height of the pixel rectangle
     * @param outData  An object reference to an array of type defined by
     *                 getTransferType() and length w*h*getNumDataElements().  
     *                 If null, an array of appropriate type and size will be
     *                 allocated.
     * @return         An object reference to an array of type defined by
     *                 getTransferType() with the requested pixel data.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if outData is too small to hold the output.
     */
    public Object getDataElements(int x, int y, int w, int h, Object outData) {
        return sampleModel.getDataElements(x - sampleModelTranslateX,
                                           y - sampleModelTranslateY,
                                           w, h, outData, dataBuffer);
    }

    /**
     * Returns the samples in an array of int for the specified pixel.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x The X coordinate of the pixel location
     * @param y The Y coordinate of the pixel location
     * @param iArray An optionally preallocated int array
     * @return the samples for the specified pixel.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if iArray is too small to hold the output.
     */
    public int[] getPixel(int x, int y, int iArray[]) {
        return sampleModel.getPixel(x - sampleModelTranslateX,
				    y - sampleModelTranslateY,
                                    iArray, dataBuffer);
    }

    /**
     * Returns the samples in an array of float for the 
     * specified pixel.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x The X coordinate of the pixel location
     * @param y The Y coordinate of the pixel location
     * @param fArray An optionally preallocated float array
     * @return the samples for the specified pixel.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if fArray is too small to hold the output.
     */
    public float[] getPixel(int x, int y, float fArray[]) {
        return sampleModel.getPixel(x - sampleModelTranslateX,
				    y - sampleModelTranslateY,
                                    fArray, dataBuffer);
    }
  
    /** 
     * Returns the samples in an array of double for the specified pixel.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x The X coordinate of the pixel location
     * @param y The Y coordinate of the pixel location
     * @param dArray An optionally preallocated double array
     * @return the samples for the specified pixel.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if dArray is too small to hold the output.
     */
    public double[] getPixel(int x, int y, double dArray[]) {
        return sampleModel.getPixel(x - sampleModelTranslateX,
				    y - sampleModelTranslateY,
				    dArray, dataBuffer);
    }
  
    /** 
     * Returns an int array containing all samples for a rectangle of pixels,
     * one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x      The X coordinate of the upper-left pixel location
     * @param y      The Y coordinate of the upper-left pixel location
     * @param w      Width of the pixel rectangle
     * @param h      Height of the pixel rectangle
     * @param iArray An optionally pre-allocated int array
     * @return the samples for the specified rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if iArray is too small to hold the output.
     */
    public int[] getPixels(int x, int y, int w, int h, int iArray[]) {
        return sampleModel.getPixels(x - sampleModelTranslateX,
                                     y - sampleModelTranslateY, w, h,
                                     iArray, dataBuffer);
    }

    /**
     * Returns a float array containing all samples for a rectangle of pixels,
     * one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the pixel location
     * @param y        The Y coordinate of the pixel location
     * @param w        Width of the pixel rectangle
     * @param h        Height of the pixel rectangle
     * @param fArray   An optionally pre-allocated float array
     * @return the samples for the specified rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if fArray is too small to hold the output.
     */
    public float[] getPixels(int x, int y, int w, int h,
                             float fArray[]) {
        return sampleModel.getPixels(x - sampleModelTranslateX,
                                     y - sampleModelTranslateY, w, h,
                                     fArray, dataBuffer);
    }

    /**
     * Returns a double array containing all samples for a rectangle of pixels,
     * one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the upper-left pixel location
     * @param y        The Y coordinate of the upper-left pixel location
     * @param w        Width of the pixel rectangle
     * @param h        Height of the pixel rectangle
     * @param dArray   An optionally pre-allocated double array
     * @return the samples for the specified rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates are not
     * in bounds, or if dArray is too small to hold the output.
     */
    public double[] getPixels(int x, int y, int w, int h,
                              double dArray[]) {
        return sampleModel.getPixels(x - sampleModelTranslateX,
                                     y - sampleModelTranslateY,
                                     w, h, dArray, dataBuffer);
    }
  
  
    /** 
     * Returns the sample in a specified band for the pixel located
     * at (x,y) as an int.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the pixel location
     * @param y        The Y coordinate of the pixel location
     * @param b        The band to return
     * @return the sample in the specified band for the pixel at the
     *         specified coordinate.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public int getSample(int x, int y, int b) {
        return sampleModel.getSample(x - sampleModelTranslateX,
				     y - sampleModelTranslateY, b,
				     dataBuffer);
    }
    
    /** 
     * Returns the sample in a specified band
     * for the pixel located at (x,y) as a float.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the pixel location
     * @param y        The Y coordinate of the pixel location
     * @param b        The band to return
     * @return the sample in the specified band for the pixel at the
     *         specified coordinate.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public float getSampleFloat(int x, int y, int b) {
        return sampleModel.getSampleFloat(x - sampleModelTranslateX,
					  y - sampleModelTranslateY, b,
					  dataBuffer);
    }
  
    /** 
     * Returns the sample in a specified band
     * for a pixel located at (x,y) as a double.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the pixel location
     * @param y        The Y coordinate of the pixel location
     * @param b        The band to return
     * @return the sample in the specified band for the pixel at the
     *         specified coordinate.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public double getSampleDouble(int x, int y, int b) {
        return sampleModel.getSampleDouble(x - sampleModelTranslateX,
					   y - sampleModelTranslateY,
					   b, dataBuffer);
    }
  
    /** 
     * Returns the samples for a specified band for the specified rectangle
     * of pixels in an int array, one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the upper-left pixel location
     * @param y        The Y coordinate of the upper-left pixel location
     * @param w        Width of the pixel rectangle
     * @param h        Height of the pixel rectangle
     * @param b        The band to return
     * @param iArray   An optionally pre-allocated int array
     * @return the samples for the specified band for the specified 
     *         rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if iArray is too small to
     * hold the output.
     */
    public int[] getSamples(int x, int y, int w, int h, int b,
                            int iArray[]) {
        return sampleModel.getSamples(x - sampleModelTranslateX,
                                      y - sampleModelTranslateY,
                                      w, h, b, iArray,
                                      dataBuffer);
    }

    /**
     * Returns the samples for a specified band for the specified rectangle
     * of pixels in a float array, one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the upper-left pixel location
     * @param y        The Y coordinate of the upper-left pixel location
     * @param w        Width of the pixel rectangle
     * @param h        Height of the pixel rectangle
     * @param b        The band to return
     * @param fArray   An optionally pre-allocated float array
     * @return the samples for the specified band for the specified 
     *         rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if fArray is too small to
     * hold the output.
     */
    public float[] getSamples(int x, int y, int w, int h, int b,
                              float fArray[]) {
        return sampleModel.getSamples(x - sampleModelTranslateX,
                                      y - sampleModelTranslateY,
                                      w, h, b, fArray, dataBuffer);
    }

    /**
     * Returns the samples for a specified band for a specified rectangle
     * of pixels in a double array, one sample per array element.
     * An ArrayIndexOutOfBoundsException may be thrown
     * if the coordinates are not in bounds.  However, explicit bounds
     * checking is not guaranteed.
     * @param x        The X coordinate of the upper-left pixel location
     * @param y        The Y coordinate of the upper-left pixel location
     * @param w        Width of the pixel rectangle
     * @param h        Height of the pixel rectangle
     * @param b        The band to return
     * @param dArray   An optionally pre-allocated double array
     * @return the samples for the specified band for the specified 
     *         rectangle of pixels.
     *
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if dArray is too small to
     * hold the output.
     */
    public double[] getSamples(int x, int y, int w, int h, int b,
                               double dArray[]) {
         return sampleModel.getSamples(x - sampleModelTranslateX,
                                       y - sampleModelTranslateY,
                                       w, h, b, dArray, dataBuffer);
    }

}

Generated By: JavaOnTracks Doclet 0.1.4     ©Thibaut Colar