...I have had no experience with GeoTiff...but have you installed Java Advanced Imaging?
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----- Messaggio originale -----
Da: "Ta3ban41aol.com" <Ta3ban41aol.com>
A: openmap-users1bbn.com
Inviato: Martedì 22 aprile 2008, 21:45:10
Oggetto: [OpenMap Users] GeoTiff how to ??
Hi All, I'm newbie with openmap API . I trying to display geotiff files and
i did find the following class JAIPlugIn shown below from openmap
mailing list Archive . Unfortunately I couldn't get it to display the
geotiff file . Any help would be really appreciated.
Thanks
Mike
the following is how i was setting it up
Properties jaiProps = new
Properties();
jaiProps.put("jailayer.prettyName",
repro.getProperty("jailayer.prettyName"));
jaiProps.put("jailayer.imageFile",
repro.getProperty("jailayer.imageFile"));
jai.setProperties("jailayer",
jaiProps);
PlugInLayer pl = new
PlugInLayer();
pl.setPlugIn(jai);
pl.setVisible(true);
layerHandler.addLayer(pl);
//*********************************************///
import java.awt.Component;
import java.io.BufferedReader;
import
java.io.FileNotFoundException;
import java.io.FileReader;
import
java.io.IOException;
import java.util.Properties;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import com.bbn.openmap.LatLonPoint;
import
com.bbn.openmap.omGraphics.OMGraphicList;
import
com.bbn.openmap.omGraphics.OMScalingRaster;
import
com.bbn.openmap.plugin.OMGraphicHandlerPlugIn;
import
com.bbn.openmap.proj.Projection;
import
com.bbn.openmap.proj.coords.DMSLatLonPoint;
import
com.bbn.openmap.util.Debug;
import com.bbn.openmap.util.PropUtils;
import com.sun.media.jai.codec.FileSeekableStream;
import
com.sun.media.jai.codec.TIFFDirectory;
import
com.sun.media.jai.codec.TIFFField;
/**
*
* @author
mahmoudm
*/
public class JAIPlugIn extends OMGraphicHandlerPlugIn
{
double lat, lon, lat2, lon2, ximage_scale,
yimage_scale;
// sourcelat,sourcelon;
protected PlanarImage source = null;
boolean DEBUG = true;
/** The property for the data file - tileFile.
*/
public final static String FileNameProperty =
"imageFile";
/**
* The property for
whether the data file has a descriptive
header
on
the
* first line, to let the reader know to ignore
that line -
fileHasHeader.
* Default is
true.
*/
protected String imageFileName = null;
// the map
OMScalingRaster raster
= null;
/**
* Default
constructor.
*/
public
JAIPlugIn()
{
super();
DEBUG =
Debug.debugging("JAIPlugIn");
}
public JAIPlugIn(Component comp)
{
super(comp);
}
/**
* The getRectangle call
is the main call into the PlugIn module.
* The
module
* is expected to fill the graphics list with
objects that are
* within
the
* screen parameters
passed.
*
* @param
p
* projection of the screen, holding scale, center
coords,
* height, width.
*/
public OMGraphicList getRectangle(Projection p)
{
OMGraphicList list =
(OMGraphicList) getList();
list.clear();
if (DEBUG)
{
Debug.output("CSVTIPI:
getRectangle");
}
if (raster == null)
{
loadRaster(imageFileName);
}
if (raster.isOnMap(p))
{
if
(DEBUG)
{
Debug.output("CSVTIPI: image on
map");
}
raster.generate(p);
list.add(raster);
}
else if (DEBUG)
{
Debug.output("CSVTIPI: image not on map,
skipping");
}
repaint();
return list;
} // end getRectangle
/**
* PropertyConsumer
method, setting the PlugIn with properties that
*
apply to
* it.
*/
public void setProperties(String prefix, Properties
props)
{
super.setProperties(prefix, props);
String realPrefix =
PropUtils.getScopedPropertyPrefix(prefix);
imageFileName =
props.getProperty(realPrefix + FileNameProperty);
if (DEBUG)
{
Debug.output("CSVTIPI: file: " +
imageFileName);
}
}
/**
* Takes the URL to a csv
file and parses it into OMScaledRasters,
* adding
them to the tiles HashSet.
*/
protected void loadRaster(String csvFileName)
{
if (imageFileName != null)
{
try
{
init();
}
catch (FileNotFoundException e)
{
//Debug.output("CSVTIPI: file: " + imageFileName + " not
found");
e.printStackTrace();
}
//
OMScalingRaster
omsr
raster = new OMScalingRaster((float) lat, (float)
lon,
(float) lat2, (float)
lon2,
source.getAsBufferedImage());
}
}
/**
* Method to fill in a
Properties object, reflecting the current
* values of
* the PropertyConsumer. If
the PropertyConsumer has a prefix set, the
*
property keys should have that prefix plus a separating
'.'
* prepended to
*
each propery key it uses for configuration.
*
* @param getList
* a
Properties object to load the PropertyConsumer
properties
* into. If getList equals null, then a
new Properties object
* should be
created.
* @return Properties object containing
PropertyConsumer property values. If
* getList was
not null, this should equal getList.Otherwise, it
*
should be the Properties object created by the
*
PropertyConsumer.
*/
public
Properties getProperties(Properties getList)
{
if (getList == null)
{
getList
= new Properties();
}
String prefix =
PropUtils.getScopedPropertyPrefix(this);
getList.put(prefix +
FileNameProperty,
PropUtils.unnull(imageFileName));
return
getList;
}
int sourceWidth;
int sourceHeigth;
public void init() throws FileNotFoundException
{
try {
String
associatedfile =
imageFileName;
source = JAI.create("fileload", associatedfile);
sourceWidth =
source.getWidth();
sourceHeigth = source.getHeight();
double
xscale,
yscale;
double lonNW,
latNW;
String projfilename =
imageFileName;
FileSeekableStream st;
if
(imageFileName.endsWith(".tif")
|| imageFileName.endsWith(".TIF")) {
st = new FileSeekableStream(imageFileName);
TIFFDirectory
td;
td = new TIFFDirectory(st, 0);
TIFFField tfMPS = td.getField(33550); //
ModelPixelScaleTag
TIFFField tfMTP = td.getField(33922); // ModelTiepointTag
System.out.println("tfMPS " + tfMPS + "\ntfMTP " + tfMTP +" -->
"+imageFileName);
try
{
xscale =
tfMPS.getAsDouble(0);
yscale = tfMPS.getAsDouble(1);
double[] tiepoints = tfMTP.getAsDoubles();
System.out.println("count=" + tfMTP.getCount());
for (int i = 0; i < tiepoints.length; i++)
{
System.out.println("-->" +
tiepoints[i]);
}
System.out.println("type=" +
tfMPS.getType());
System.out.println("type=" +
tfMTP.getType());
System.out.println("nb of tiepoints =
"
+ tfMTP.getAsDouble(0));
if (tfMTP.getCount() != 6 && tfMTP.getCount() != 4)
{
System.out.println("warning tif file may pose
problems...");
}
if (tfMTP.getCount() == 6)
{
lonNW =
tfMTP.getAsDouble(3);
latNW =
tfMTP.getAsDouble(4);
}
else if (tfMTP.getCount() == 2)
{
lonNW =
tfMTP.getAsDouble(0);
latNW =
tfMTP.getAsDouble(1);
}
else
{
lonNW =
tfMTP.getAsDouble(2);
latNW =
tfMTP.getAsDouble(3);
}
DMSLatLonPoint upperLeft = new DMSLatLonPoint(new LatLonPoint(latNW,
lonNW));
DMSLatLonPoint lowerRight = new DMSLatLonPoint(new
LatLonPoint(latNW
- (yscale * (source.getHeight())),
lonNW
+ (xscale * (source.getWidth()))));
System.out.println("xscale " + xscale + " yscale "
+yscale
+ " lonNW " + lonNW + " latNW " +
latNW
+ " img height " +
source.getHeight()
+ " img width " + source.getWidth() + "
"
+ formatDMSPoint(upperLeft) + "
"
+
formatDMSPoint(lowerRight));
init((double) (latNW), (double)
(lonNW),
(double) (latNW - (yscale
*
(source.getHeight()))),
(double) (lonNW + (xscale
*
(source.getWidth()))),
(double) xscale, (double) yscale);
st.close();
} catch (Exception e)
{
st.close();
System.out.println("Error reading geotiff" +
e);
e.printStackTrace();
System.out
.println("No Geotiff referencing found.Attempting projection file.");
if
(imageFileName.endsWith(".tif"))
projfilename = imageFileName.replaceAll("\\.tif",
".tfw");
setGeoReferencing(source,
projfilename);
}
} else
{
if
(imageFileName.endsWith(".bmp"))
projfilename = imageFileName.replaceAll("\\.bmp",
".bpw");
else if
(imageFileName.endsWith(".BMP"))
projfilename = imageFileName.replaceAll("\\.BMP",
".BPW");
else if
(imageFileName.endsWith(".JPG"))
projfilename = imageFileName.replaceAll("\\.JPG",
".JGW");
else if
(imageFileName.endsWith(".jpg"))
projfilename = imageFileName.replaceAll("\\.jpg",
".jgw");
setGeoReferencing(source,
projfilename);
}
} catch (IOException e)
{
System.out.println("OMJAIScalingRaster...");
System.out.println(e.getMessage());
}
}
public void setGeoReferencing(PlanarImage src, String
projfilename) throws FileNotFoundException
{
double
xscale;
double
yscale;
double
lonNW;
double
latNW;
try
{
FileReader
projectionFile;
projectionFile = new
FileReader(projfilename);
BufferedReader reader = new
BufferedReader(projectionFile);
String line =
reader.readLine();
System.out.println("xscale=" +
line);
xscale = Double.valueOf(line).doubleValue();
line =
reader.readLine();
line =
reader.readLine();
line =
reader.readLine();
System.out.println("yscale=" +
line);
yscale =
-Double.valueOf(line).doubleValue();
//
System.out.println(line);
line =
reader.readLine();
lonNW =
Double.valueOf(line).doubleValue();
System.out.println("lonNW=" +
line);
line =
reader.readLine();
latNW =
Double.valueOf(line).doubleValue();
System.out.println("latNW=" + line + " width=" +
sourceWidth
+ " sourceHeigth" + sourceHeigth);
//
reader.close();
projectionFile.close();
reader.close();
// if
(xsize == -1 || ysize ==
-1)
//
{
init((double) (latNW), (double)
(lonNW),
(double) (latNW - (xscale *
(sourceHeigth))),
(double) (lonNW + (yscale *
(sourceWidth))),
(double) xscale, (double)
yscale);
// }
//
else
//
init((double) (latNW), (double) (lonNW), (double) (latNW
-
//
(xscale * ysize)), (double) (lonNW + (yscale *
xsize)),(double)
// xscale, (double) yscale);
}
catch (IOException e)
{
System.out.println("setgeo :" +
e.getMessage());
}
}
void init(double lt, double ln, double lt_2, double
ln_2, double xim_scale,double yim_scale)
{
lat = (float)
lt;
lon = (float) ln;
ximage_scale =
xim_scale;
yimage_scale =
yim_scale;
// sourcelat =
lt;
// sourcelon = lon;
lat2 =
lt_2;
lon2 = ln_2;
System.out.println("lat " + lat
+ " lon " + lon + " lat2 " + lat2+ " lon2 " + lon2);
}
private String formatDMSPoint(DMSLatLonPoint p)
{
String
res = "[[";
res +=
p.lat_isnegative ? "-" : "";
res
+= p.lat_degrees + " " + p.lat_minutes + " " + p.lat_seconds + "]
[";
res += p.lon_isnegative ? "-"
: "";
res += p.lon_degrees + " " +
p.lon_minutes + " " + p.lon_seconds+
"]]";
return
res;
}
}
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