/**
* Set the sounding in the table
*
* @param sounding the sounding
* @throws RemoteException Java RMI problem
* @throws VisADException problem dissecting data
*/
private void setSounding(Field sounding) throws VisADException, RemoteException {
domainData = null;
// domain values
Set domain = sounding.getDomainSet();
CoordinateSystem cs = domain.getCoordinateSystem();
float[][] domSamples = domain.getSamples(false);
if ((cs != null)) {
float[][] domFloats = Set.copyFloats(domSamples);
// Must convert from the default coordinate domain system to
// the domain coordinate system of the sounding.
String fromUnit = sounding.getDomainUnits()[0].toString();
String toUnit = cs.getCoordinateSystemUnits()[0].toString();
if (!fromUnit.equals(toUnit) && SimpleUnit.isCompatible(fromUnit, toUnit)) {
float conversionFactor = (float) SimpleUnit.getConversionFactor(fromUnit, toUnit);
for (int i = 0; i < domFloats.length; i++) {
for (int j = 0; j < domFloats[i].length; j++) {
domFloats[i][j] = domFloats[i][j] * conversionFactor;
}
}
}
float[][] refData = cs.toReference(domFloats);
domainData = new float[][] {domSamples[0], refData[0]};
}
// range values
RealType[] rangeComps = ((FunctionType) sounding.getType()).getRealComponents();
rangeData = sounding.getFloats(false);
// wind
if (rangeComps.length > 2) {
transformWinds = (showUAndV && !haveUV) || (!showUAndV && haveUV);
if (!transformWinds) {
for (int i = 2; i < 4; i++) {
columnNames[numDomainCols + i] =
makeColumnName(rangeComps[i], rangeComps[i].getDefaultUnit());
}
} else {
RealTupleType refType = windTransform.getReference();
Unit[] refUnits = windTransform.getReferenceUnits();
for (int i = 0; i < 2; i++) {
columnNames[numDomainCols + i + 2] =
makeColumnName((RealType) refType.getComponent(i), refUnits[i]);
}
float[][] newVals =
windTransform.toReference(Set.copyFloats(new float[][] {rangeData[2], rangeData[3]}));
rangeData[2] = newVals[0];
rangeData[3] = newVals[1];
}
}
sorter.setTableModel(model);
}
/**
* The returned {@link visad.FlatField} will have NaN-s for those unit vector components that
* could not be computed.
*
* @param grid The spatial grid.
* @param index The index of the manifold dimension along which to compute the unit vector.
* @return A field of components of the unit vector for the given manifold dimension.
* @throws NullPointerException if the grid is <code>null</code>.
* @throws IllegalArgumentException if the manifold dimension of the grid is less than 2 or if the
* grid doesn't contain {@link visad.RealType#Latitude} and {@link visad.RealType#Longitude}.
* @throws VisADException if a VisAD failure occurs.
* @throws RemoteException if a Java RMI failure occurs.
*/
private static FlatField hatFieldNew(Set grid, int index) throws VisADException, RemoteException {
CoordinateSystem cs = grid.getCoordinateSystem();
boolean hasCS = cs != null;
RealTupleType rtt = (hasCS) ? cs.getReference() : ((SetType) grid.getType()).getDomain();
int latI = rtt.getIndex(RealType.Latitude);
if (latI == -1) {
throw new IllegalArgumentException(rtt.toString());
}
int lonI = rtt.getIndex(RealType.Longitude);
if (lonI == -1) {
throw new IllegalArgumentException(rtt.toString());
}
if (grid.getManifoldDimension() < 2) {
throw new IllegalArgumentException(grid.toString());
}
int[][] neighbors = grid.getNeighbors(index);
LatLonPointImpl refPt = new LatLonPointImpl();
LatLonPointImpl neiPt = new LatLonPointImpl();
Bearing bearing = new Bearing();
float[] hat1 = new float[2];
float[] hat2 = new float[2];
float[][] hat = new float[2][grid.getLength()];
float[][] refCoords = null;
float[][] neiCoords = null;
float[][] domainSamples = grid.getSamples(false);
refCoords = (hasCS) ? cs.toReference(Set.copyFloats(domainSamples)) : domainSamples;
// If the grid is lat/lon or has an IdentityCoordinateSystem
// don't do the rotation
// TODO: handle rotated lat/lon grids
if (!hasCS
|| (refCoords == domainSamples)
|| (Arrays.equals(refCoords[latI], domainSamples[latI])
&& Arrays.equals(refCoords[lonI], domainSamples[lonI]))) {
if (index == 0) {
Arrays.fill(hat[0], 1);
Arrays.fill(hat[1], 0);
} else {
Arrays.fill(hat[0], 0);
Arrays.fill(hat[1], 1);
}
} else {
float latBefore, lonBefore, latAfter, lonAfter;
// int backOffset = (index==0) ? -180 : 0;
// int foreOffset = (index==0) ? 0 : -180;
int backOffset = -180;
int foreOffset = 0;
for (int i = 0; i < neighbors.length; i++) {
refPt.set(refCoords[latI][i], refCoords[lonI][i]);
if ((neighbors[i][0] < 0) || (neighbors[i][0] >= neighbors.length)) {
latBefore = Float.NaN;
lonBefore = Float.NaN;
} else {
latBefore = refCoords[latI][neighbors[i][0]];
lonBefore = refCoords[lonI][neighbors[i][0]];
}
if ((neighbors[i][1] < 0) || (neighbors[i][1] >= neighbors.length)) {
latAfter = Float.NaN;
lonAfter = Float.NaN;
} else {
latAfter = refCoords[latI][neighbors[i][1]];
lonAfter = refCoords[lonI][neighbors[i][1]];
}
compute(refPt, neiPt, latBefore, lonBefore, backOffset, bearing, hat1);
float d1 = (float) bearing.getDistance();
compute(refPt, neiPt, latAfter, lonAfter, foreOffset, bearing, hat2);
float d2 = (float) bearing.getDistance();
boolean bad1 = Double.isNaN(d1);
boolean bad2 = Double.isNaN(d2);
if (bad1 && bad2) {
hat[0][i] = Float.NaN;
hat[1][i] = Float.NaN;
} else {
if (bad1) {
hat[0][i] = hat2[0];
hat[1][i] = hat2[1];
} else if (bad2) {
hat[0][i] = hat1[0];
hat[1][i] = hat1[1];
} else {
float tot = d1 + d2;
float c1 = d2 / tot;
float c2 = d1 / tot;
float xhat = c1 * hat1[0] + c2 * hat2[0];
float yhat = c1 * hat1[1] + c2 * hat2[1];
float mag = (float) Math.sqrt(xhat * xhat + yhat * yhat);
hat[0][i] = xhat / mag;
hat[1][i] = yhat / mag;
}
}
}
}
FlatField hatField =
new FlatField(
new FunctionType(
((SetType) grid.getType()).getDomain(),
new RealTupleType(
RealType.getRealType("xHat", CommonUnit.dimensionless),
RealType.getRealType("yHat", CommonUnit.dimensionless))),
grid);
hatField.setSamples(hat, false);
return hatField;
}
/**
* run 'java visad.bom.ImageRendererJ3D len step' to test animation behavior of ImageRendererJ3D
* renders a loop of len at step ms per frame then updates loop by deleting first time and adding
* a new last time
*/
public static void main(String args[]) throws VisADException, RemoteException, IOException {
int step = 1000;
int len = 3;
if (args.length > 0) {
try {
len = Integer.parseInt(args[0]);
} catch (NumberFormatException e) {
len = 3;
}
}
if (len < 1) len = 1;
if (args.length > 1) {
try {
step = Integer.parseInt(args[1]);
} catch (NumberFormatException e) {
step = 1000;
}
}
if (step < 1) step = 1;
// create a netCDF reader
Plain plain = new Plain();
// open a netCDF file containing an image sequence and adapt
// it to a Field Data object
Field raw_image_sequence = null;
try {
// raw_image_sequence = (Field) plain.open("images256x256.nc");
raw_image_sequence = (Field) plain.open("images.nc");
} catch (IOException exc) {
String s =
"To run this example, the images.nc file must be "
+ "present in\nthe current directory."
+ "You can obtain this file from:\n"
+ " ftp://www.ssec.wisc.edu/pub/visad-2.0/images.nc.Z";
System.out.println(s);
System.exit(0);
}
// just take first half of raw_image_sequence
FunctionType image_sequence_type = (FunctionType) raw_image_sequence.getType();
Set raw_set = raw_image_sequence.getDomainSet();
float[][] raw_times = raw_set.getSamples();
int raw_len = raw_times[0].length;
if (raw_len != 4) {
throw new VisADException("wrong number of images in sequence");
}
float raw_span = (4.0f / 3.0f) * (raw_times[0][3] - raw_times[0][0]);
double[][] times = new double[1][len];
for (int i = 0; i < len; i++) {
times[0][i] = raw_times[0][i % raw_len] + raw_span * (i / raw_len);
}
Gridded1DDoubleSet set = new Gridded1DDoubleSet(raw_set.getType(), times, len);
Field image_sequence = new FieldImpl(image_sequence_type, set);
for (int i = 0; i < len; i++) {
image_sequence.setSample(i, raw_image_sequence.getSample(i % raw_len));
}
// create a DataReference for image sequence
final DataReference image_ref = new DataReferenceImpl("image");
image_ref.setData(image_sequence);
// create a Display using Java3D
DisplayImpl display = new DisplayImplJ3D("image display");
// extract the type of image and use
// it to determine how images are displayed
FunctionType image_type = (FunctionType) image_sequence_type.getRange();
RealTupleType domain_type = image_type.getDomain();
// map image coordinates to display coordinates
display.addMap(new ScalarMap((RealType) domain_type.getComponent(0), Display.XAxis));
display.addMap(new ScalarMap((RealType) domain_type.getComponent(1), Display.YAxis));
// map image brightness values to RGB (default is grey scale)
display.addMap(new ScalarMap((RealType) image_type.getRange(), Display.RGB));
RealType hour_type = (RealType) image_sequence_type.getDomain().getComponent(0);
ScalarMap animation_map = new ScalarMap(hour_type, Display.Animation);
display.addMap(animation_map);
AnimationControl animation_control = (AnimationControl) animation_map.getControl();
animation_control.setStep(step);
animation_control.setOn(true);
/*
// link the Display to image_ref
ImageRendererJ3D renderer = new ImageRendererJ3D();
display.addReferences(renderer, image_ref);
// display.addReference(image_ref);
*/
// create JFrame (i.e., a window) for display and slider
JFrame frame = new JFrame("ImageRendererJ3D test");
frame.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// create JPanel in JFrame
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
panel.setAlignmentY(JPanel.TOP_ALIGNMENT);
panel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
frame.getContentPane().add(panel);
// add display to JPanel
panel.add(display.getComponent());
// set size of JFrame and make it visible
frame.setSize(500, 500);
frame.setVisible(true);
System.out.println("first animation sequence");
// link the Display to image_ref
ImageRendererJ3D renderer = new ImageRendererJ3D();
display.addReferences(renderer, image_ref);
// display.addReference(image_ref);
// wait 4 * len seconds
new Delay(len * 4000);
// substitute a new image sequence for the old one
for (int i = 0; i < len; i++) {
times[0][i] = raw_times[0][(i + 1) % raw_len] + raw_span * ((i + 1) / raw_len);
}
set = new Gridded1DDoubleSet(raw_set.getType(), times, len);
FieldImpl new_image_sequence = new FieldImpl(image_sequence_type, set);
for (int i = 0; i < len; i++) {
new_image_sequence.setSample(i, raw_image_sequence.getSample((i + 1) % raw_len));
}
System.out.println("second animation sequence");
// tell renderer to resue frames in its scene graph
renderer.setReUseFrames(true);
image_ref.setData(new_image_sequence);
}