/**
* Select the visible grid elements
*
* @param dc the current <code>DrawContext</code>.
*/
protected void selectRenderables(DrawContext dc) {
if (dc == null) {
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
Sector vs = dc.getVisibleSector();
OrbitView view = (OrbitView) dc.getView();
// Compute labels offset from view center
Position centerPos = view.getCenterPosition();
Double pixelSizeDegrees =
Angle.fromRadians(
view.computePixelSizeAtDistance(view.getZoom())
/ dc.getGlobe().getEquatorialRadius())
.degrees;
Double labelOffsetDegrees = pixelSizeDegrees * view.getViewport().getWidth() / 4;
Position labelPos =
Position.fromDegrees(
centerPos.getLatitude().degrees - labelOffsetDegrees,
centerPos.getLongitude().degrees - labelOffsetDegrees,
0);
Double labelLatDegrees = labelPos.getLatitude().normalizedLatitude().degrees;
labelLatDegrees = Math.min(Math.max(labelLatDegrees, -76), 78);
labelPos =
new Position(
Angle.fromDegrees(labelLatDegrees), labelPos.getLongitude().normalizedLongitude(), 0);
if (vs != null) {
for (GridElement ge : this.gridElements) {
if (ge.isInView(dc)) {
if (ge.renderable instanceof GeographicText) {
GeographicText gt = (GeographicText) ge.renderable;
if (labelPos.getLatitude().degrees < 72
|| "*32*34*36*".indexOf("*" + gt.getText() + "*") == -1) {
// Adjust label position according to eye position
Position pos = gt.getPosition();
if (ge.type.equals(GridElement.TYPE_LATITUDE_LABEL))
pos =
Position.fromDegrees(
pos.getLatitude().degrees,
labelPos.getLongitude().degrees,
pos.getElevation());
else if (ge.type.equals(GridElement.TYPE_LONGITUDE_LABEL))
pos =
Position.fromDegrees(
labelPos.getLatitude().degrees,
pos.getLongitude().degrees,
pos.getElevation());
gt.setPosition(pos);
}
}
this.graticuleSupport.addRenderable(ge.renderable, GRATICULE_UTM);
}
}
// System.out.println("Total elements: " + count + " visible sector: " + vs);
}
}
private Iterable<GeographicText> makeIterable(DrawContext dc) {
// get dispay dist for this service for use in label annealing
double maxDisplayDistance = this.getPlaceNameService().getMaxDisplayDistance();
ArrayList<GeographicText> list = new ArrayList<GeographicText>();
for (int i = 0; i < this.numEntries; i++) {
CharSequence str = getText(i);
Position pos = getPosition(i);
GeographicText text = new UserFacingText(str, pos);
text.setFont(this.placeNameService.getFont());
text.setColor(this.placeNameService.getColor());
text.setBackgroundColor(this.placeNameService.getBackgroundColor());
text.setVisible(isNameVisible(dc, this.placeNameService, pos));
text.setPriority(maxDisplayDistance);
list.add(text);
}
return list;
}
public void createRenderables() {
this.gridElements = new ArrayList<GridElement>();
ArrayList<Position> positions = new ArrayList<Position>();
Position p1, p2;
Object polyline;
Sector lineSector;
// left segment
positions.clear();
if (this.isTruncated) {
computeTruncatedSegment(sw, nw, this.UTMZoneSector, positions);
} else {
positions.add(sw);
positions.add(nw);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_WEST);
ge.setValue(this.SWEasting);
this.gridElements.add(ge);
}
// right segment
positions.clear();
if (this.isTruncated) {
computeTruncatedSegment(se, ne, this.UTMZoneSector, positions);
} else {
positions.add(se);
positions.add(ne);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_EAST);
ge.setValue(this.SWEasting + this.size);
this.gridElements.add(ge);
}
// bottom segment
positions.clear();
if (this.isTruncated) {
computeTruncatedSegment(sw, se, this.UTMZoneSector, positions);
} else {
positions.add(sw);
positions.add(se);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_SOUTH);
ge.setValue(this.SWNorthing);
this.gridElements.add(ge);
}
// top segment
positions.clear();
if (this.isTruncated) {
computeTruncatedSegment(nw, ne, this.UTMZoneSector, positions);
} else {
positions.add(nw);
positions.add(ne);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_NORTH);
ge.setValue(this.SWNorthing + this.size);
this.gridElements.add(ge);
}
// Label
if (this.name != null) {
// Only add a label to squares above some dimension
if (this.boundingSector.getDeltaLon().degrees
* Math.cos(this.centroid.getLatitude().radians)
> .2
&& this.boundingSector.getDeltaLat().degrees > .2) {
LatLon labelPos = null;
if (this.UTMZone != 0) // Not at poles
{
labelPos = this.centroid;
} else if (this.isPositionInside(new Position(this.squareCenter, 0))) {
labelPos = this.squareCenter;
} else if (this.squareCenter.getLatitude().degrees
<= this.UTMZoneSector.getMaxLatitude().degrees
&& this.squareCenter.getLatitude().degrees
>= this.UTMZoneSector.getMinLatitude().degrees) {
labelPos = this.centroid;
}
if (labelPos != null) {
GeographicText text = new UserFacingText(this.name, new Position(labelPos, 0));
text.setPriority(this.size * 10);
this.gridElements.add(
new GridElement(this.boundingSector, text, GridElement.TYPE_GRIDZONE_LABEL));
}
}
}
}
public void selectRenderables(DrawContext dc) {
try {
OrbitView view = (OrbitView) dc.getView();
// Compute easting and northing label offsets
Double pixelSize = view.computePixelSizeAtDistance(view.getZoom());
Double eastingOffset = view.getViewport().width * pixelSize * offsetFactorX / 2;
Double northingOffset = view.getViewport().height * pixelSize * offsetFactorY / 2;
// Derive labels center pos from the view center
Position centerPos = view.getCenterPosition();
double labelEasting;
double labelNorthing;
String labelHemisphere;
if (this.zone > 0) {
UTMCoord UTM =
UTMCoord.fromLatLon(centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
labelEasting = UTM.getEasting() + eastingOffset;
labelNorthing = UTM.getNorthing() + northingOffset;
labelHemisphere = UTM.getHemisphere();
if (labelNorthing < 0) {
labelNorthing = 10e6 + labelNorthing;
labelHemisphere = AVKey.SOUTH;
}
} else {
UPSCoord UPS =
UPSCoord.fromLatLon(centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
labelEasting = UPS.getEasting() + eastingOffset;
labelNorthing = UPS.getNorthing() + northingOffset;
labelHemisphere = UPS.getHemisphere();
}
Position labelPos;
for (int i = 0; i < this.extremes.length; i++) {
UTMExtremes levelExtremes = this.extremes[i];
double gridStep = Math.pow(10, i);
double gridStepTimesTen = gridStep * 10;
String graticuleType = getTypeFor((int) gridStep);
if (levelExtremes.minX <= levelExtremes.maxX) {
// Process easting scale labels for this level
for (double easting = levelExtremes.minX;
easting <= levelExtremes.maxX;
easting += gridStep) {
// Skip multiples of ten grid steps except for last (higher) level
if (i == this.extremes.length - 1 || easting % gridStepTimesTen != 0) {
try {
labelPos = computePosition(this.zone, labelHemisphere, easting, labelNorthing);
if (labelPos == null) continue;
Angle lat = labelPos.getLatitude();
Angle lon = labelPos.getLongitude();
Vec4 surfacePoint = getSurfacePoint(dc, lat, lon);
if (viewFrustum.contains(surfacePoint) && isPointInRange(dc, surfacePoint)) {
String text = String.valueOf((int) (easting % this.scaleModulo));
GeographicText gt = new UserFacingText(text, new Position(lat, lon, 0));
gt.setPriority(gridStepTimesTen);
addRenderable(gt, graticuleType);
}
} catch (IllegalArgumentException ignore) {
}
}
}
}
if (!(levelExtremes.maxYHemisphere.equals(AVKey.SOUTH) && levelExtremes.maxY == 0)) {
// Process northing scale labels for this level
String currentHemisphere = levelExtremes.minYHemisphere;
for (double northing = levelExtremes.minY;
(northing <= levelExtremes.maxY)
|| !currentHemisphere.equals(levelExtremes.maxYHemisphere);
northing += gridStep) {
// Skip multiples of ten grid steps except for last (higher) level
if (i == this.extremes.length - 1 || northing % gridStepTimesTen != 0) {
try {
labelPos = computePosition(this.zone, currentHemisphere, labelEasting, northing);
if (labelPos == null) continue;
Angle lat = labelPos.getLatitude();
Angle lon = labelPos.getLongitude();
Vec4 surfacePoint = getSurfacePoint(dc, lat, lon);
if (viewFrustum.contains(surfacePoint) && isPointInRange(dc, surfacePoint)) {
String text = String.valueOf((int) (northing % this.scaleModulo));
GeographicText gt = new UserFacingText(text, new Position(lat, lon, 0));
gt.setPriority(gridStepTimesTen);
addRenderable(gt, graticuleType);
}
} catch (IllegalArgumentException ignore) {
}
if (!currentHemisphere.equals(levelExtremes.maxYHemisphere)
&& northing >= 10e6 - gridStep) {
// Switch hemisphere
currentHemisphere = levelExtremes.maxYHemisphere;
northing = -gridStep;
}
}
}
} // end northing
} // for levels
} catch (IllegalArgumentException ignore) {
}
}