/** ensure that non-Manual components of flow_tuple have equal dataRanges symmetric about 0.0 */
public static void equalizeFlow(Vector mapVector, DisplayTupleType flow_tuple)
throws VisADException, RemoteException {
double[] range = new double[2];
double low = Double.MAX_VALUE;
double hi = -Double.MAX_VALUE;
boolean anyAuto = false;
Enumeration maps = mapVector.elements();
while (maps.hasMoreElements()) {
ScalarMap map = ((ScalarMap) maps.nextElement());
DisplayRealType dtype = map.getDisplayScalar();
DisplayTupleType tuple = dtype.getTuple();
if (flow_tuple.equals(tuple) && !map.isManual && !map.badRange()) {
anyAuto = true;
low = Math.min(low, map.dataRange[0]);
hi = Math.max(hi, map.dataRange[1]);
}
}
if (!anyAuto) return;
hi = Math.max(hi, -low);
low = -hi;
maps = mapVector.elements();
while (maps.hasMoreElements()) {
ScalarMap map = ((ScalarMap) maps.nextElement());
DisplayRealType dtype = map.getDisplayScalar();
DisplayTupleType tuple = dtype.getTuple();
if (flow_tuple.equals(tuple) && !map.isManual && !map.badRange()) {
map.setRange(null, low, hi, false);
}
}
}
/**
* Return <CODE>true</CODE> if <CODE>type</CODE> is legal for this <CODE>DisplayRenderer</CODE>;
* for example, 2-D <CODE>DisplayRenderer</CODE>s use this to disallow mappings to <I>ZAxis</I>
* and <I>Latitude</I>.
*
* @param type The mapping type to check.
* @return <CODE>true</CODE> if <CODE>type</CODE> is legal.
*/
public boolean legalDisplayScalar(DisplayRealType type) {
// First check to see if it is a member of the default list
for (int i = 0; i < Display.DisplayRealArray.length; i++) {
if (Display.DisplayRealArray[i].equals(type)) return true;
}
// if we get here, it's not one of the defaults. See if it has
// a CS that transforms to a default that we know how to handle
if (type.getTuple() != null && type.getTuple().getCoordinateSystem() != null) {
RealTupleType ref = type.getTuple().getCoordinateSystem().getReference();
if (ref.equals(Display.DisplaySpatialCartesianTuple)
|| ref.equals(Display.DisplayRGBTuple)
|| ref.equals(Display.DisplayFlow1Tuple)
|| ref.equals(Display.DisplayFlow2Tuple)) return true;
}
return false;
}
/**
* Set <CODE>Vector</CODE> of <CODE>String</CODE>s describing the cursor location from the cursor
* location; this is invoked when the cursor location changes or the cursor display status changes
*/
public void setCursorStringVector() {
synchronized (cursorStringVector) {
cursorStringVector.removeAllElements();
float[][] cursor = new float[3][1];
double[] cur = getCursor();
cursor[0][0] = (float) cur[0];
cursor[1][0] = (float) cur[1];
cursor[2][0] = (float) cur[2];
Enumeration maps = display.getMapVector().elements();
while (maps.hasMoreElements()) {
try {
ScalarMap map = (ScalarMap) maps.nextElement();
DisplayRealType dreal = map.getDisplayScalar();
DisplayTupleType tuple = dreal.getTuple();
int index = dreal.getTupleIndex();
if (tuple != null
&& (tuple.equals(Display.DisplaySpatialCartesianTuple)
|| (tuple.getCoordinateSystem() != null
&& tuple
.getCoordinateSystem()
.getReference()
.equals(Display.DisplaySpatialCartesianTuple)))) {
float[] fval = new float[1];
if (tuple.equals(Display.DisplaySpatialCartesianTuple)) {
fval[0] = cursor[index][0];
} else {
float[][] new_cursor = tuple.getCoordinateSystem().fromReference(cursor);
fval[0] = new_cursor[index][0];
}
float[] dval = map.inverseScaleValues(fval);
RealType real = (RealType) map.getScalar();
// WLH 31 Aug 2000
Real r = new Real(real, dval[0]);
Unit overrideUnit = map.getOverrideUnit();
Unit rtunit = real.getDefaultUnit();
// units not part of Time string
// DRM 2003-08-19: don't check for equality since toString
// may be different
if (overrideUnit != null
&& // !overrideUnit.equals(rtunit) &&
(!Unit.canConvert(rtunit, CommonUnit.secondsSinceTheEpoch)
|| rtunit.getAbsoluteUnit().equals(rtunit))) {
dval[0] = (float) overrideUnit.toThis((double) dval[0], rtunit);
r = new Real(real, dval[0], overrideUnit);
}
String valueString = r.toValueString();
// WLH 27 Oct 2000
String s = map.getScalarName() + " = " + valueString;
// String s = real.getName() + " = " + valueString;
cursorStringVector.addElement(s);
} // end if (tuple != null && ...)
} catch (VisADException e) {
}
} // end while(maps.hasMoreElements())
} // end synchronized (cursorStringVector)
render_trigger();
}
/** check for flow mappings; does not allow flow mapping through CoordinateSystem */
private String findFlow(
ShadowTupleType shadow,
DisplayImpl display,
DisplayTupleType[] tuples,
int[] flowToComponent) {
ShadowRealType[] components = shadow.getRealComponents();
for (int i = 0; i < components.length; i++) {
int num_flow_per_real = 0;
Enumeration maps = components[i].getSelectedMapVector().elements();
while (maps.hasMoreElements()) {
ScalarMap map = (ScalarMap) maps.nextElement();
DisplayRealType dreal = map.getDisplayScalar();
DisplayTupleType tuple = dreal.getTuple();
if (Display.DisplayFlow1Tuple.equals(tuple) || Display.DisplayFlow2Tuple.equals(tuple)) {
if (tuples[0] != null) {
if (!tuples[0].equals(tuple)) {
return multipleFlowTuples;
}
} else {
tuples[0] = tuple;
}
num_flow_per_real++;
if (num_flow_per_real > 1) {
return multipleFlowMapping;
}
int index = dreal.getTupleIndex();
flowToComponent[index] = i;
directMap[index] = map;
} else if (Display.DisplayFlow1SphericalTuple.equals(tuple)
|| Display.DisplayFlow2SphericalTuple.equals(tuple)) {
if (tuples[0] != null) {
if (!tuples[0].equals(tuple)) {
return multipleFlowTuples;
}
} else {
tuples[0] = tuple;
coord = tuple.getCoordinateSystem();
}
num_flow_per_real++;
if (num_flow_per_real > 1) {
return multipleFlowMapping;
}
int index = dreal.getTupleIndex();
flowToComponent[index] = i;
directMap[index] = map;
}
} // while (maps.hasMoreElements())
}
return null;
}