@Test
public void testThreeGeoTIFFTagsWithOneAscii() {
metadata.addGeoShortParam(2300, 4576);
metadata.addGeoAscii(2400, "String");
metadata.addGeoShortParam(2401, 3456);
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
final TIFFField asciiField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, asciiField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(TIFFField.TIFF_ASCII, asciiField.getType());
assertEquals(16, dirField.getCount());
assertEquals(1, asciiField.getCount());
final char[] expected = {
1, 1, 2, 3,
2300, 0, 1, 4576,
2400, GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, 7, 0,
2401, 0, 1, 3456
};
assertArrayEquals(expected, dirField.getAsChars());
assertEquals("String|", asciiField.getAsString(0));
}
@Test
public void testVersionAndModelTiePoint() {
metadata.addModelTiePoint(1, 2, 3, 4, 5, 6);
metadata.addModelTiePoint(2, 3, 4, 5, 6, 7);
metadata.addModelTiePoint(3, 4, 5, 6, 7, 8);
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(4, dirField.getCount());
assertArrayEquals(new char[] {1, 1, 2, 0}, dirField.getAsChars());
final TIFFField tiePointField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_MODEL_TIE_POINT, tiePointField.getTag());
assertEquals(TIFFField.TIFF_DOUBLE, tiePointField.getType());
assertEquals(3 * 6, tiePointField.getCount());
final double[] expected = {
1, 2, 3, 4, 5, 6,
2, 3, 4, 5, 6, 7,
3, 4, 5, 6, 7, 8
};
assertEquals(true, Arrays.equals(expected, tiePointField.getAsDoubles()));
}
@Test
public void testThreeGeoTIFFTagsWithOneDouble() {
metadata.addGeoShortParam(2300, 4576);
metadata.addGeoDoubleParam(2400, 4.5);
metadata.addGeoShortParam(2401, 3456);
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
final TIFFField doubleField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(GeoTIFFTagSet.TAG_GEO_DOUBLE_PARAMS, doubleField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(TIFFField.TIFF_DOUBLE, doubleField.getType());
assertEquals(16, dirField.getCount());
assertEquals(1, doubleField.getCount());
final char[] expected = {
1, 1, 2, 3,
2300, 0, 1, 4576,
2400, GeoTIFFTagSet.TAG_GEO_DOUBLE_PARAMS, 1, 0,
2401, 0, 1, 3456
};
assertArrayEquals(expected, dirField.getAsChars());
assertEquals(true, Arrays.equals(new double[] {4.5}, doubleField.getAsDoubles()));
}
/** @return the crs as a string */
public String getHumanReadableCoordinateSystem() {
StringBuilder sb = new StringBuilder();
if (this.geoKeyDirectoryTag.containsKey(new Integer(GeoTiffKey.PCSCitationGeoKey))) {
int[] key_entry = this.geoKeyDirectoryTag.get(new Integer(GeoTiffKey.PCSCitationGeoKey));
// check if value of field is located in GeoAsciiParamsTag (34737)
if (key_entry[0] == GeoTiffTag.GeoAsciiParamsTag) {
TIFFField field = this.tifdir.getField(GeoTiffTag.GeoAsciiParamsTag);
int ascii_length = key_entry[1];
int ascii_start = key_entry[2];
// return the string between the two byte-locations - 1 (the
// last '|')
String s = field.getAsString(0);
if (s != null) {
sb.append(s.substring(ascii_start, ascii_length - 1));
}
} else {
sb.append("No asci crs field is located in GeoAsciiParamsTag (");
sb.append(GeoTiffKey.PCSCitationGeoKey).append(").");
}
} else {
sb.append("<empty>");
}
// GeogCitationGeoKey
return sb.toString();
}
/**
* GeoAsciiParamsTag: <br>
* Tag = 34737 (87B1.H) <br>
* Type = ASCII <br>
* Owner: SPOT Image, Inc. <br>
* N = variable
*
* <p>This tag is used to store all of the DOUBLE valued GeoKeys, referenced by the
* GeoKeyDirectoryTag. The meaning of any value of this double array is determined from the
* GeoKeyDirectoryTag reference pointing to it. FLOAT values should first be converted to DOUBLE
* and stored here.
*
* <p>A baseline GeoTIFF-reader must check for and convert the final "|" pipe character of a key
* back into a NULL before returning it to the client software.
*
* @return the fields
*/
public String[] getGeoAsciiParamsTag() {
// TODO: getGeoAsciiParamsTag(int count, int value_offset)!!!
TIFFField field = this.tifdir.getField(GeoTiffTag.GeoAsciiParamsTag);
String gapt = field.getAsString(0);
LOG.debug(gapt);
StringTokenizer st = new StringTokenizer(gapt, "|");
LOG.debug("countTokens: " + st.countTokens());
String[] gapt_fields = new String[st.countTokens()];
int i = 0;
while (st.hasMoreTokens()) {
gapt_fields[i++] = st.nextToken();
}
for (int j = 0; j < gapt_fields.length; j++) {
LOG.debug(gapt_fields[j]);
}
return gapt_fields;
}
@Test
public void testVersionOnly() {
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(1, list.size());
final TIFFField dirField = list.get(0);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(4, dirField.getCount());
final char[] expected = {1, 1, 2, 0};
assertArrayEquals(expected, dirField.getAsChars());
}
@Test
public void testVersionAndModelPixelScale() {
metadata.setModelPixelScale(1, 2, 3);
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(4, dirField.getCount());
assertArrayEquals(new char[] {1, 1, 2, 0}, dirField.getAsChars());
final TIFFField scaleField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_MODEL_PIXEL_SCALE, scaleField.getTag());
assertEquals(TIFFField.TIFF_DOUBLE, scaleField.getType());
assertEquals(3, scaleField.getCount());
assertEquals(true, Arrays.equals(new double[] {1, 2, 3}, scaleField.getAsDoubles()));
}
@Test
public void testVersionAndModelTransformation() {
metadata.setModelTransformation(
new double[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16});
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(4, dirField.getCount());
assertArrayEquals(new char[] {1, 1, 2, 0}, dirField.getAsChars());
final TIFFField transformField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_MODEL_TRANSFORMATION, transformField.getTag());
assertEquals(TIFFField.TIFF_DOUBLE, transformField.getType());
assertEquals(16, transformField.getCount());
final double[] expected = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
assertEquals(true, Arrays.equals(expected, transformField.getAsDoubles()));
}
@Test
public void testThreeGeoTIFFShortTags() {
metadata.addGeoShortParam(2300, 4576);
metadata.addGeoShortParam(2400, 12);
metadata.addGeoShortParam(2401, 3456);
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(1, list.size());
final TIFFField dirField = list.get(0);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(16, dirField.getCount());
final char[] expected = {
1, 1, 2, 3,
2300, 0, 1, 4576,
2400, 0, 1, 12,
2401, 0, 1, 3456
};
assertArrayEquals(expected, dirField.getAsChars());
}
/**
* GeoKeyDirectoryTag: <br>
* Tag = 34735 (87AF.H) <br>
* Type = SHORT (2-byte unsigned short) <br>
* N = variable, >= 4 <br>
* Alias: ProjectionInfoTag, CoordSystemInfoTag <br>
* Owner: SPOT Image, Inc.
*
* <p>This tag may be used to store the GeoKey Directory, which defines and references the
* "GeoKeys", as described below.
*
* <p>The tag is an array of unsigned SHORT values, which are primarily grouped into blocks of 4.
* The first 4 values are special, and contain GeoKey directory header information. The header
* values consist of the following information, in order:
*
* <p><tt>Header={KeyDirectoryVersion, KeyRevision, MinorRevision, NumberOfKeys}</tt>
*
* <p>and as Keys:
*
* <p><tt>KeyEntry = { KeyID, TIFFTagLocation, Count, Value_Offset }</tt>^
*
* <p>where
*
* <ul>
* <li>"KeyID" gives the key-ID value of the Key (identical in function to TIFF tag ID, but
* completely independent of TIFF tag-space),
* <li>"TIFFTagLocation" indicates which TIFF tag contains the value(s) of the Key: if
* TIFFTagLocation is 0, then the value is SHORT, and is contained in the "Value_Offset"
* entry. Otherwise, the type (format) of the value is implied by the TIFF-Type of the tag
* containing the value.
* <li>"Count" indicates the number of values in this key.
* <li>"Value_Offset" Value_Offset indicates the index- offset *into* the TagArray indicated by
* TIFFTagLocation, if it is nonzero. If TIFFTagLocation=0, then Value_Offset contains the
* actual (SHORT) value of the Key, and Count=1 is implied. Note that the offset is not a
* byte-offset, but rather an index based on the natural data type of the specified tag
* array.
* </ul>
*/
private void setGeoKeyDirectoryTag() {
TIFFField ff = this.tifdir.getField(GeoTiffTag.GeoKeyDirectoryTag);
char[] ch = ff.getAsChars();
// resulting HashMap, containing the key and the array of values
this.geoKeyDirectoryTag = new HashMap<Integer, int[]>(ff.getCount() / 4);
// array of values. size is 4-1.
int keydirversion, keyrevision, minorrevision, numberofkeys = -99;
for (int i = 0; i < ch.length; i = i + 4) {
int[] keys = new int[3];
keydirversion = ch[i];
keyrevision = ch[i + 1];
minorrevision = ch[i + 2];
numberofkeys = ch[i + 3];
keys[0] = keyrevision;
keys[1] = minorrevision;
keys[2] = numberofkeys;
LOG.debug(
"["
+ i
+ "].KEY: "
+ keydirversion
+ " \t"
+ keyrevision
+ "\t"
+ minorrevision
+ "\t"
+ numberofkeys);
this.geoKeyDirectoryTag.put(new Integer(keydirversion), keys);
}
this.hasGeoKeyDirectoryTag = true;
}
/**
* @return the bbox
* @throws GeoTiffException
*/
public Envelope getBoundingBox() throws GeoTiffException {
TIFFField modelPixelScaleTag = this.tifdir.getField(GeoTiffTag.ModelPixelScaleTag);
double resx = modelPixelScaleTag.getAsDouble(0);
double resy = modelPixelScaleTag.getAsDouble(1);
TIFFField modelTiepointTag = this.tifdir.getField(GeoTiffTag.ModelTiepointTag);
double val1 = 0.0;
val1 = modelTiepointTag.getAsDouble(0);
double val2 = 0.0;
val2 = modelTiepointTag.getAsDouble(1);
double val4 = 0.0;
val4 = modelTiepointTag.getAsDouble(3);
double val5 = 0.0;
val5 = modelTiepointTag.getAsDouble(4);
if ((resx == 0.0 || resy == 0.0)
|| (val1 == 0.0 && val2 == 0.0 && val4 == 0.0 && val5 == 0.0)) {
throw new GeoTiffException("The image/coverage hasn't a bounding box");
// set the geoparams derived by geoTiffTags
}
// upper/left pixel
double xOrigin = val4 - (val1 * resx);
double yOrigin = val5 - (val2 * resy);
// lower/right pixel
double xRight = xOrigin + image.getWidth() * resx;
double yBottom = yOrigin - image.getHeight() * resy;
double xmin = xOrigin;
double ymin = yBottom;
double xmax = xRight;
double ymax = yOrigin;
Envelope envelope = geometryFactory.createEnvelope(xmin, ymin, xmax, ymax, null);
return envelope;
}
@Test
public void testThreeGeoTIFFStringTags() {
metadata.addGeoAscii(2300, "4576");
metadata.addGeoAscii(2400, "aaaaaaaa");
metadata.addGeoAscii(2401, "bbbb");
final List<TIFFField> list = Utils.createGeoTIFFFields(metadata);
assertNotNull(list);
assertEquals(2, list.size());
final TIFFField dirField = list.get(0);
final TIFFField asciiField = list.get(1);
assertEquals(GeoTIFFTagSet.TAG_GEO_KEY_DIRECTORY, dirField.getTag());
assertEquals(GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, asciiField.getTag());
assertEquals(TIFFField.TIFF_SHORT, dirField.getType());
assertEquals(TIFFField.TIFF_ASCII, asciiField.getType());
assertEquals(16, dirField.getCount());
assertEquals(3, asciiField.getCount());
final char[] expected = {
1, 1, 2, 3,
2300, GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, 5, 0,
2400, GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, 9, 5,
2401, GeoTIFFTagSet.TAG_GEO_ASCII_PARAMS, 5, 14
};
assertArrayEquals(expected, dirField.getAsChars());
assertEquals("4576|", asciiField.getAsString(0));
assertEquals("aaaaaaaa|", asciiField.getAsString(1));
assertEquals("bbbb|", asciiField.getAsString(2));
}