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);
}
public synchronized void drag_direct(VisADRay ray, boolean first, int mouseModifiers) {
if (barbValues == null || ref == null || shadow == null) return;
if (first) {
stop = false;
} else {
if (stop) return;
}
// modify direction if mshift != 0
// modify speed if mctrl != 0
// modify speed and direction if neither
int mshift = mouseModifiers & InputEvent.SHIFT_MASK;
int mctrl = mouseModifiers & InputEvent.CTRL_MASK;
float o_x = (float) ray.position[0];
float o_y = (float) ray.position[1];
float o_z = (float) ray.position[2];
float d_x = (float) ray.vector[0];
float d_y = (float) ray.vector[1];
float d_z = (float) ray.vector[2];
if (pickCrawlToCursor) {
if (first) {
offset_count = OFFSET_COUNT_INIT;
} else {
if (offset_count > 0) offset_count--;
}
if (offset_count > 0) {
float mult = ((float) offset_count) / ((float) OFFSET_COUNT_INIT);
o_x += mult * offsetx;
o_y += mult * offsety;
o_z += mult * offsetz;
}
}
if (first || refirst) {
point_x = barbValues[2];
point_y = barbValues[3];
point_z = 0.0f;
line_x = 0.0f;
line_y = 0.0f;
line_z = 1.0f; // lineAxis == 2 in DataRenderer.drag_direct
} // end if (first || refirst)
float[] x = new float[3]; // x marks the spot
// DirectManifoldDimension = 2
// intersect ray with plane
float dot = (point_x - o_x) * line_x + (point_y - o_y) * line_y + (point_z - o_z) * line_z;
float dot2 = d_x * line_x + d_y * line_y + d_z * line_z;
if (dot2 == 0.0) return;
dot = dot / dot2;
// x is intersection
x[0] = o_x + dot * d_x;
x[1] = o_y + dot * d_y;
x[2] = o_z + dot * d_z;
/*
System.out.println("x = " + x[0] + " " + x[1] + " " + x[2]);
*/
try {
Tuple data = (Tuple) link.getData();
int n = ((TupleType) data.getType()).getNumberOfRealComponents();
Real[] reals = new Real[n];
int k = 0;
int m = data.getDimension();
for (int i = 0; i < m; i++) {
Data component = data.getComponent(i);
if (component instanceof Real) {
reals[k++] = (Real) component;
} else if (component instanceof RealTuple) {
for (int j = 0; j < ((RealTuple) component).getDimension(); j++) {
reals[k++] = (Real) ((RealTuple) component).getComponent(j);
}
}
}
if (first || refirst) {
// get first Data flow vector
for (int i = 0; i < 3; i++) {
int j = flowToComponent[i];
data_flow[i] = (j >= 0) ? (float) reals[j].getValue() : 0.0f;
}
if (coord != null) {
float[][] ds = {{data_flow[0]}, {data_flow[1]}, {data_flow[2]}};
ds = coord.toReference(ds);
data_flow[0] = ds[0][0];
data_flow[1] = ds[1][0];
data_flow[2] = ds[2][0];
}
data_speed =
(float)
Math.sqrt(
data_flow[0] * data_flow[0]
+ data_flow[1] * data_flow[1]
+ data_flow[2] * data_flow[2]);
float barb0 = barbValues[2] - barbValues[0];
float barb1 = barbValues[3] - barbValues[1];
/*
System.out.println("data_flow = " + data_flow[0] + " " + data_flow[1] +
" " + data_flow[2]);
System.out.println("barbValues = " + barbValues[0] + " " + barbValues[1] +
" " + barbValues[2] + " " + barbValues[3]);
System.out.println("data_speed = " + data_speed);
*/
} // end if (first || refirst)
// convert x to a flow vector, and from spatial to earth
if (getRealVectorTypes(which_barb) instanceof EarthVectorType) {
// don't worry about vector magnitude -
// data_speed & display_speed take care of that
float eps = 0.0001f; // estimate derivative with a little vector
float[][] spatial_locs = {
{barbValues[0], barbValues[0] + eps * (x[0] - barbValues[0])},
{barbValues[1], barbValues[1] + eps * (x[1] - barbValues[1])},
{0.0f, 0.0f}
};
/*
System.out.println("spatial_locs = " + spatial_locs[0][0] + " " +
spatial_locs[0][1] + " " + spatial_locs[1][0] + " " +
spatial_locs[1][1]);
*/
float[][] earth_locs = spatialToEarth(spatial_locs);
// WLH - 18 Aug 99
if (earth_locs == null) return;
/*
System.out.println("earth_locs = " + earth_locs[0][0] + " " +
earth_locs[0][1] + " " + earth_locs[1][0] + " " +
earth_locs[1][1]);
*/
x[2] = 0.0f;
x[0] =
(earth_locs[1][1] - earth_locs[1][0])
* ((float) Math.cos(Data.DEGREES_TO_RADIANS * earth_locs[0][0]));
x[1] = earth_locs[0][1] - earth_locs[0][0];
/*
System.out.println("x = " + x[0] + " " + x[1] + " " + x[2]);
*/
} else { // if (!(getRealVectorTypes(which_barb) instanceof EarthVectorType))
// convert x to vector
x[0] -= barbValues[0];
x[1] -= barbValues[1];
// adjust for spatial map scalings but don't worry about vector
// magnitude - data_speed & display_speed take care of that
// also, spatial is Cartesian
double[] ranges = getRanges();
for (int i = 0; i < 3; i++) {
x[i] /= ranges[i];
}
/*
System.out.println("ranges = " + ranges[0] + " " + ranges[1] +
" " + ranges[2]);
System.out.println("x = " + x[0] + " " + x[1] + " " + x[2]);
*/
}
// WLH 6 August 99
x[0] = -x[0];
x[1] = -x[1];
x[2] = -x[2];
/* may need to do this for performance
float[] xx = {x[0], x[1], x[2]};
addPoint(xx);
*/
float x_speed = (float) Math.sqrt(x[0] * x[0] + x[1] * x[1] + x[2] * x[2]);
/* WLH 16 April 2002 - from Ken
if (x_speed < 0.000001f) x_speed = 0.000001f;
*/
if (x_speed < 0.01f) x_speed = 0.01f;
if (first || refirst) {
display_speed = x_speed;
}
refirst = false;
if (mshift != 0) {
// only modify data_flow direction
float ratio = data_speed / x_speed;
x[0] *= ratio;
x[1] *= ratio;
x[2] *= ratio;
/*
System.out.println("direction, ratio = " + ratio + " " +
data_speed + " " + x_speed);
System.out.println("x = " + x[0] + " " + x[1] + " " + x[2]);
*/
} else if (mctrl != 0) {
// only modify data_flow speed
float ratio = x_speed / display_speed;
if (data_speed < EPS) {
data_flow[0] = 2.0f * EPS;
refirst = true;
}
x[0] = ratio * data_flow[0];
x[1] = ratio * data_flow[1];
x[2] = ratio * data_flow[2];
/*
System.out.println("speed, ratio = " + ratio + " " +
x_speed + " " + display_speed);
System.out.println("x = " + x[0] + " " + x[1] + " " + x[2]);
*/
} else {
// modify data_flow speed and direction
float ratio = data_speed / display_speed;
/*
System.out.println("data_speed = " + data_speed +
" display_speed = " + display_speed +
" ratio = " + ratio + " EPS = " + EPS);
System.out.println("x = " + x[0] + " " + x[1] +" " + x[2] +
" x_speed = " + x_speed);
data_speed = 21.213203 display_speed = 0.01 ratio = 2121.3203 EPS = 0.2
x = 1.6170928E-4 1.6021729E-4 -0.0 x_speed = 0.01
wind = (0.3430372, 0.33987218) at (-35.0, 5.0)
*/
if (data_speed < EPS) {
data_flow[0] = 2.0f * EPS;
x[0] = data_flow[0];
x[1] = data_flow[1];
x[2] = data_flow[2];
refirst = true;
} else {
x[0] *= ratio;
x[1] *= ratio;
x[2] *= ratio;
}
}
if (coord != null) {
float[][] xs = {{x[0]}, {x[1]}, {x[2]}};
xs = coord.fromReference(xs);
x[0] = xs[0][0];
x[1] = xs[1][0];
x[2] = xs[2][0];
}
// now replace flow values
Vector vect = new Vector();
for (int i = 0; i < 3; i++) {
int j = flowToComponent[i];
if (j >= 0) {
RealType rtype = (RealType) reals[j].getType();
reals[j] = new Real(rtype, (double) x[i], rtype.getDefaultUnit(), null);
// WLH 31 Aug 2000
Real r = reals[j];
Unit overrideUnit = null;
if (directMap[i] != null) {
overrideUnit = directMap[i].getOverrideUnit();
}
Unit rtunit = rtype.getDefaultUnit();
// units not part of Time string
if (overrideUnit != null
&& !overrideUnit.equals(rtunit)
&& !RealType.Time.equals(rtype)) {
double d = (float) overrideUnit.toThis((double) x[0], rtunit);
r = new Real(rtype, d, overrideUnit);
String valueString = r.toValueString();
vect.addElement(rtype.getName() + " = " + valueString);
} else {
// create location string
vect.addElement(rtype.getName() + " = " + x[i]);
}
}
}
getDisplayRenderer().setCursorStringVector(vect);
Data newData = null;
// now build new RealTuple or Flat Tuple
if (data instanceof RealTuple) {
newData =
new RealTuple(
((RealTupleType) data.getType()), reals, ((RealTuple) data).getCoordinateSystem());
} else {
Data[] new_components = new Data[m];
k = 0;
for (int i = 0; i < m; i++) {
Data component = data.getComponent(i);
if (component instanceof Real) {
new_components[i] = reals[k++];
} else if (component instanceof RealTuple) {
Real[] sub_reals = new Real[((RealTuple) component).getDimension()];
for (int j = 0; j < ((RealTuple) component).getDimension(); j++) {
sub_reals[j] = reals[k++];
}
new_components[i] =
new RealTuple(
((RealTupleType) component.getType()),
sub_reals,
((RealTuple) component).getCoordinateSystem());
}
}
newData = new Tuple(new_components, false);
}
ref.setData(newData);
} catch (VisADException e) {
// do nothing
System.out.println("drag_direct " + e);
e.printStackTrace();
} catch (RemoteException e) {
// do nothing
System.out.println("drag_direct " + e);
e.printStackTrace();
}
}
public BranchGroup doTransform() throws VisADException, RemoteException {
DataDisplayLink[] Links = getLinks();
if (Links == null || Links.length == 0) {
return null;
}
DataDisplayLink link = Links[0];
ShadowTypeJ3D type = (ShadowTypeJ3D) link.getShadow();
boolean doByRef = false;
if (isByRefUsable(link, type) && ShadowType.byReference) {
doByRef = true;
type =
new ShadowImageByRefFunctionTypeJ3D(
link.getData().getType(),
link,
null,
((ShadowFunctionOrSetType) type.getAdaptedShadowType()).getInheritedValues(),
(ShadowFunctionOrSetType) type.getAdaptedShadowType(),
type.getLevelOfDifficulty());
}
BranchGroup branch = null;
if ((lastByRef && doByRef) || (!lastByRef && !doByRef)) {
branch = getBranch();
}
lastByRef = doByRef;
if (branch == null) {
branch = new BranchGroup();
branch.setCapability(BranchGroup.ALLOW_DETACH);
branch.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
branch.setCapability(BranchGroup.ALLOW_CHILDREN_READ);
branch.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
last_curve_size = -1;
last_zaxis_value = Float.NaN;
last_alpha_value = Float.NaN;
last_data_hash_code = -1;
adjust_projection_seam = false; // 27FEB2012: Projection Seam Change Bug Fix
}
// initialize valueArray to missing
int valueArrayLength = getDisplay().getValueArrayLength();
float[] valueArray = new float[valueArrayLength];
for (int i = 0; i < valueArrayLength; i++) {
valueArray[i] = Float.NaN;
}
Data data;
try {
data = link.getData();
} catch (RemoteException re) {
if (visad.collab.CollabUtil.isDisconnectException(re)) {
getDisplay().connectionFailed(this, link);
removeLink(link);
return null;
}
throw re;
}
if (data == null) {
branch = null;
addException(new DisplayException("Data is null: DefaultRendererJ3D.doTransform"));
} else {
// check MathType of non-null data, to make sure it is a single-band
// image or a sequence of single-band images
MathType mtype = link.getType();
if (!isImageType(mtype)) {
throw new BadMappingException("must be image or image sequence");
}
link.start_time = System.currentTimeMillis();
link.time_flag = false;
vbranch = null;
// transform data into a depiction under branch
long t1 = System.currentTimeMillis();
try {
if (type
instanceof
ShadowImageByRefFunctionTypeJ3D) { // GEOMETRY/COLORBYTE REUSE LOGIC Only for ByRef for
// Time being
if (checkAction()) { // This generally decides whether at all retransformation is required
// or not.
type.doTransform(branch, data, valueArray, link.getDefaultValues(), this);
}
} else { // Not byRef (ShadowImageFunctionTypeJ3D)
type.doTransform(branch, data, valueArray, link.getDefaultValues(), this);
}
} catch (RemoteException re) {
if (visad.collab.CollabUtil.isDisconnectException(re)) {
getDisplay().connectionFailed(this, link);
removeLink(link);
return null;
}
throw re;
}
long t2 = System.currentTimeMillis();
// System.err.println("Time taken:" + (t2-t1));
}
link.clearData();
return branch;
}
public static boolean isByRefUsable(DataDisplayLink link, ShadowType shadow)
throws VisADException, RemoteException {
ShadowFunctionOrSetType shadowType = (ShadowFunctionOrSetType) shadow.getAdaptedShadowType();
CoordinateSystem dataCoordinateSystem = null;
FlatField fltField = null;
int num_images = 1;
FieldImpl field = (FieldImpl) link.getData();
if (!(field instanceof FlatField)) {
num_images = field.getDomainSet().getLength();
if (1
== num_images) { // If there is a single image in the animation dont do anything, simply
// return true
return true;
}
shadowType = (ShadowFunctionOrSetType) shadowType.getRange();
fltField = (FlatField) field.getSample(0);
dataCoordinateSystem = fltField.getDomainCoordinateSystem();
} else {
dataCoordinateSystem = ((FlatField) field).getDomainCoordinateSystem();
return true;
}
// cs might be cached
if (dataCoordinateSystem instanceof CachingCoordinateSystem) {
dataCoordinateSystem =
((CachingCoordinateSystem) dataCoordinateSystem).getCachedCoordinateSystem();
}
ShadowRealType[] DomainComponents = shadowType.getDomainComponents();
ShadowRealTupleType Domain = shadowType.getDomain();
ShadowRealTupleType domain_reference = Domain.getReference();
ShadowRealType[] DC = DomainComponents;
if (domain_reference != null && domain_reference.getMappedDisplayScalar()) {
DC = shadowType.getDomainReferenceComponents();
}
DisplayTupleType spatial_tuple = null;
for (int i = 0; i < DC.length; i++) {
java.util.Enumeration maps = DC[i].getSelectedMapVector().elements();
ScalarMap map = (ScalarMap) maps.nextElement();
DisplayRealType real = map.getDisplayScalar();
spatial_tuple = real.getTuple();
}
CoordinateSystem coord = spatial_tuple.getCoordinateSystem();
if (coord instanceof CachingCoordinateSystem) {
coord = ((CachingCoordinateSystem) coord).getCachedCoordinateSystem();
}
boolean useLinearTexture = false;
if (coord instanceof InverseLinearScaledCS) {
InverseLinearScaledCS invCS = (InverseLinearScaledCS) coord;
useLinearTexture = (invCS.getInvertedCoordinateSystem()).equals(dataCoordinateSystem);
}
/**
* if useLinearTexture is true at this point, it's true for the first image of a sequence with
* numimages > 1. We'll have to assume that byRef will apply until below is resolved.
*/
/**
* more consideration/work needed here. CoordinateSystems might be equal even if they aren't the
* same transform (i,j) -> (lon,lat) if (!useLinearTexture) { //If DisplayCoordinateSystem !=
* DataCoordinateSystem if (num_images > 1) { //Its an animation int lengths[] =
* ((visad.GriddedSet) fltField.getDomainSet()).getLengths(); int data_width = lengths[0]; int
* data_height = lengths[1]; for (int i = 1; i < num_images; i++) {//Playing safe: go down the
* full sequence to find if the full set is Geostaionary or NOT FlatField ff = (FlatField)
* field.getSample(i); //Quicker Approach would be to just compare only the first two images in
* the sequence. But that may not be safe. CoordinateSystem dcs =
* ff.getDomainCoordinateSystem(); // dcs might be cached if (dcs instanceof
* CachingCoordinateSystem) { dcs = ((CachingCoordinateSystem) dcs).getCachedCoordinateSystem();
* } int[] lens = ((visad.GriddedSet) ff.getDomainSet()).getLengths(); if (lens[0] != data_width
* || lens[1] != data_height || ( (dcs != null) && (dataCoordinateSystem != null) &&
* !dcs.equals(dataCoordinateSystem))) { useLinearTexture = false; break; } } } }
*/
return useLinearTexture;
}