public void createRenderables() {
this.gridElements = new ArrayList<GridElement>();
double gridStep = this.size / 10;
Position p1, p2;
ArrayList<Position> positions = new ArrayList<Position>();
// South-North lines
for (int i = 1; i <= 9; i++) {
double easting = this.SWEasting + gridStep * i;
positions.clear();
p1 = computePosition(this.UTMZone, this.hemisphere, easting, SWNorthing);
p2 = computePosition(this.UTMZone, this.hemisphere, easting, SWNorthing + this.size);
if (this.isTruncated) {
computeTruncatedSegment(p1, p2, this.UTMZoneSector, positions);
} else {
positions.add(p1);
positions.add(p2);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
Object polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
Sector lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_EASTING);
ge.setValue(easting);
this.gridElements.add(ge);
}
}
// West-East lines
for (int i = 1; i <= 9; i++) {
double northing = this.SWNorthing + gridStep * i;
positions.clear();
p1 = computePosition(this.UTMZone, this.hemisphere, SWEasting, northing);
p2 = computePosition(this.UTMZone, this.hemisphere, SWEasting + this.size, northing);
if (this.isTruncated) {
computeTruncatedSegment(p1, p2, this.UTMZoneSector, positions);
} else {
positions.add(p1);
positions.add(p2);
}
if (positions.size() > 0) {
p1 = positions.get(0);
p2 = positions.get(1);
Object polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
Sector lineSector = Sector.boundingSector(p1, p2);
GridElement ge = new GridElement(lineSector, polyline, GridElement.TYPE_LINE_NORTHING);
ge.setValue(northing);
this.gridElements.add(ge);
}
}
}
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));
}
}
}
}
/** Create the graticule grid elements */
private void createUTMRenderables() {
this.gridElements = new ArrayList<GridElement>();
ArrayList<Position> positions = new ArrayList<Position>();
// Generate meridians and zone labels
int lon = -180;
int zoneNumber = 1;
int maxLat;
for (int i = 0; i < 60; i++) {
Angle longitude = Angle.fromDegrees(lon);
// Meridian
positions.clear();
positions.add(new Position(Angle.fromDegrees(-80), longitude, 10e3));
positions.add(new Position(Angle.fromDegrees(-60), longitude, 10e3));
positions.add(new Position(Angle.fromDegrees(-30), longitude, 10e3));
positions.add(new Position(Angle.ZERO, longitude, 10e3));
positions.add(new Position(Angle.fromDegrees(30), longitude, 10e3));
if (lon < 6 || lon > 36) {
// 'regular' UTM meridians
maxLat = 84;
positions.add(new Position(Angle.fromDegrees(60), longitude, 10e3));
positions.add(new Position(Angle.fromDegrees(maxLat), longitude, 10e3));
} else {
// Exceptions: shorter meridians around and north-east of Norway
if (lon == 6) {
maxLat = 56;
positions.add(new Position(Angle.fromDegrees(maxLat), longitude, 10e3));
} else {
maxLat = 72;
positions.add(new Position(Angle.fromDegrees(60), longitude, 10e3));
positions.add(new Position(Angle.fromDegrees(maxLat), longitude, 10e3));
}
}
Object polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
Sector sector = Sector.fromDegrees(-80, maxLat, lon, lon);
this.gridElements.add(new GridElement(sector, polyline, GridElement.TYPE_LINE));
// Zone label
GeographicText text =
new UserFacingText(zoneNumber + "", Position.fromDegrees(0, lon + 3, 0));
sector = Sector.fromDegrees(-90, 90, lon + 3, lon + 3);
this.gridElements.add(new GridElement(sector, text, GridElement.TYPE_LONGITUDE_LABEL));
// Increase longitude and zone number
lon += 6;
zoneNumber++;
}
// Generate special meridian segments for exceptions around and north-east of Norway
for (int i = 0; i < 5; i++) {
positions.clear();
lon = specialMeridians[i][0];
positions.add(
new Position(Angle.fromDegrees(specialMeridians[i][1]), Angle.fromDegrees(lon), 10e3));
positions.add(
new Position(Angle.fromDegrees(specialMeridians[i][2]), Angle.fromDegrees(lon), 10e3));
Object polyline = createLineRenderable(positions, Polyline.GREAT_CIRCLE);
Sector sector = Sector.fromDegrees(specialMeridians[i][1], specialMeridians[i][2], lon, lon);
this.gridElements.add(new GridElement(sector, polyline, GridElement.TYPE_LINE));
}
// Generate parallels - no exceptions
int lat = -80;
for (int i = 0; i < 21; i++) {
Angle latitude = Angle.fromDegrees(lat);
for (int j = 0; j < 4; j++) {
// Each prallel is divided into four 90 degrees segments
positions.clear();
lon = -180 + j * 90;
positions.add(new Position(latitude, Angle.fromDegrees(lon), 10e3));
positions.add(new Position(latitude, Angle.fromDegrees(lon + 30), 10e3));
positions.add(new Position(latitude, Angle.fromDegrees(lon + 60), 10e3));
positions.add(new Position(latitude, Angle.fromDegrees(lon + 90), 10e3));
Object polyline = createLineRenderable(positions, Polyline.LINEAR);
Sector sector = Sector.fromDegrees(lat, lat, lon, lon + 90);
this.gridElements.add(new GridElement(sector, polyline, GridElement.TYPE_LINE));
}
// Latitude band label
if (i < 20) {
GeographicText text =
new UserFacingText(latBands.charAt(i) + "", Position.fromDegrees(lat + 4, 0, 0));
Sector sector = Sector.fromDegrees(lat + 4, lat + 4, -180, 180);
this.gridElements.add(new GridElement(sector, text, GridElement.TYPE_LATITUDE_LABEL));
}
// Increase latitude
lat += lat < 72 ? 8 : 12;
}
}