/** 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;
}
public void checkDirect() throws VisADException, RemoteException {
// realCheckDirect();
//
// must customize
setIsDirectManipulation(false);
DisplayImpl display = getDisplay();
link = getLinks()[0];
ref = link.getDataReference();
type = link.getType();
if (!(type instanceof TupleType) || !((TupleType) type).getFlat()) {
whyNotDirect = notFlatTupleType;
return;
}
flowToComponent = new int[] {-1, -1, -1};
directMap = new ScalarMap[] {null, null, null};
shadow = (ShadowTupleType) link.getShadow().getAdaptedShadowType();
DisplayTupleType[] tuples = {null};
whyNotDirect = findFlow(shadow, display, tuples, flowToComponent);
if (whyNotDirect != null) return;
if (coord == null) {
if (tuples[0] == null || flowToComponent[0] < 0 || flowToComponent[1] < 0) {
whyNotDirect = noFlow;
return;
}
} else {
if (tuples[0] == null || flowToComponent[1] < 0 || flowToComponent[2] < 0) {
whyNotDirect = noFlow;
return;
}
}
ShadowRealType[] components = shadow.getRealComponents();
for (int i = 0; i < components.length; i++) {
DisplayTupleType spatial_tuple = components[i].getDisplaySpatialTuple();
if (spatial_tuple != null && !Display.DisplaySpatialCartesianTuple.equals(spatial_tuple)) {
whyNotDirect = nonCartesian;
return;
}
}
// needs more, will find out when we write drag_direct
setIsDirectManipulation(true);
}