private void adjustDateLineCrossingPoints() {
ArrayList<LatLon> corners = new ArrayList<LatLon>(Arrays.asList(sw, se, nw, ne));
if (!LatLon.locationsCrossDateLine(corners)) return;
double lonSign = 0;
for (LatLon corner : corners) {
if (Math.abs(corner.getLongitude().degrees) != 180)
lonSign = Math.signum(corner.getLongitude().degrees);
}
if (lonSign == 0) return;
if (Math.abs(sw.getLongitude().degrees) == 180
&& Math.signum(sw.getLongitude().degrees) != lonSign)
sw = new Position(sw.getLatitude(), sw.getLongitude().multiply(-1), sw.getElevation());
if (Math.abs(se.getLongitude().degrees) == 180
&& Math.signum(se.getLongitude().degrees) != lonSign)
se = new Position(se.getLatitude(), se.getLongitude().multiply(-1), se.getElevation());
if (Math.abs(nw.getLongitude().degrees) == 180
&& Math.signum(nw.getLongitude().degrees) != lonSign)
nw = new Position(nw.getLatitude(), nw.getLongitude().multiply(-1), nw.getElevation());
if (Math.abs(ne.getLongitude().degrees) == 180
&& Math.signum(ne.getLongitude().degrees) != lonSign)
ne = new Position(ne.getLatitude(), ne.getLongitude().multiply(-1), ne.getElevation());
}
private void makeRadialWallTerrainConformant(
DrawContext dc,
int pillars,
int stacks,
float[] verts,
double[] altitudes,
boolean[] terrainConformant,
Vec4 referenceCenter) {
Globe globe = dc.getGlobe();
Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());
for (int p = 0; p <= pillars; p++) {
int index = p;
index = 3 * index;
Vec4 vec = new Vec4(verts[index], verts[index + 1], verts[index + 2]);
vec = vec.transformBy4(transform);
Position pos = globe.computePositionFromPoint(vec);
for (int s = 0; s <= stacks; s++) {
double elevation = altitudes[s];
if (terrainConformant[s])
elevation += this.computeElevationAt(dc, pos.getLatitude(), pos.getLongitude());
vec = globe.computePointFromPosition(pos.getLatitude(), pos.getLongitude(), elevation);
index = p + s * (pillars + 1);
index = 3 * index;
verts[index] = (float) (vec.x - referenceCenter.x);
verts[index + 1] = (float) (vec.y - referenceCenter.y);
verts[index + 2] = (float) (vec.z - referenceCenter.z);
}
}
}
private void makePartialCylinderTerrainConformant(
DrawContext dc,
int slices,
int stacks,
float[] verts,
double[] altitudes,
boolean[] terrainConformant,
Vec4 referenceCenter) {
Globe globe = dc.getGlobe();
Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());
for (int i = 0; i <= slices; i++) {
int index = i * (stacks + 1);
index = 3 * index;
Vec4 vec = new Vec4(verts[index], verts[index + 1], verts[index + 2]);
vec = vec.transformBy4(transform);
Position p = globe.computePositionFromPoint(vec);
for (int j = 0; j <= stacks; j++) {
double elevation = altitudes[j];
if (terrainConformant[j])
elevation += this.computeElevationAt(dc, p.getLatitude(), p.getLongitude());
vec = globe.computePointFromPosition(p.getLatitude(), p.getLongitude(), elevation);
index = j + i * (stacks + 1);
index = 3 * index;
verts[index] = (float) (vec.x - referenceCenter.x);
verts[index + 1] = (float) (vec.y - referenceCenter.y);
verts[index + 2] = (float) (vec.z - referenceCenter.z);
}
}
}
private void makePartialDiskTerrainConformant(
DrawContext dc,
int numCoords,
float[] verts,
double altitude,
boolean terrainConformant,
Vec4 referenceCenter) {
Globe globe = dc.getGlobe();
Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());
for (int i = 0; i < numCoords; i += 3) {
Vec4 vec = new Vec4(verts[i], verts[i + 1], verts[i + 2]);
vec = vec.transformBy4(transform);
Position p = globe.computePositionFromPoint(vec);
double elevation = altitude;
if (terrainConformant)
elevation += this.computeElevationAt(dc, p.getLatitude(), p.getLongitude());
vec = globe.computePointFromPosition(p.getLatitude(), p.getLongitude(), elevation);
verts[i] = (float) (vec.x - referenceCenter.x);
verts[i + 1] = (float) (vec.y - referenceCenter.y);
verts[i + 2] = (float) (vec.z - referenceCenter.z);
}
}
/**
* Setup the view to a first person mode (zoom = 0)
*
* @param view the orbit view to set into a first person view.
*/
protected void setupFirstPersonView(OrbitView view) {
if (view.getZoom() == 0) // already in first person mode
return;
Vec4 eyePoint = view.getEyePoint();
// Center pos at eye pos
Position centerPosition = wwd.getModel().getGlobe().computePositionFromPoint(eyePoint);
// Compute pitch and heading relative to center position
Vec4 normal =
wwd.getModel()
.getGlobe()
.computeSurfaceNormalAtLocation(
centerPosition.getLatitude(), centerPosition.getLongitude());
Vec4 north =
wwd.getModel()
.getGlobe()
.computeNorthPointingTangentAtLocation(
centerPosition.getLatitude(), centerPosition.getLongitude());
// Pitch
view.setPitch(Angle.POS180.subtract(view.getForwardVector().angleBetween3(normal)));
// Heading
Vec4 perpendicular = view.getForwardVector().perpendicularTo3(normal);
Angle heading = perpendicular.angleBetween3(north);
double direction = Math.signum(-normal.cross3(north).dot3(perpendicular));
view.setHeading(heading.multiply(direction));
// Zoom
view.setZoom(0);
// Center pos
view.setCenterPosition(centerPosition);
}
/**
* 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);
}
}
protected void performIntersectionTests(final Position curPos) throws InterruptedException {
// Clear the results lists when the user selects a new location.
this.firstIntersectionPositions.clear();
this.sightLines.clear();
// Raise the selected location and the grid points a little above ground just to show we can.
final double height = 5; // meters
// Form the grid.
double gridRadius = GRID_RADIUS.degrees;
Sector sector =
Sector.fromDegrees(
curPos.getLatitude().degrees - gridRadius, curPos.getLatitude().degrees + gridRadius,
curPos.getLongitude().degrees - gridRadius,
curPos.getLongitude().degrees + gridRadius);
this.grid = buildGrid(sector, height, GRID_DIMENSION, GRID_DIMENSION);
this.numGridPoints = grid.size();
// Compute the position of the selected location (incorporate its height).
this.referencePosition = new Position(curPos.getLatitude(), curPos.getLongitude(), height);
this.referencePoint =
terrain.getSurfacePoint(curPos.getLatitude(), curPos.getLongitude(), height);
// // Pre-caching is unnecessary and is useful only when it occurs before the
// intersection
// // calculations. It will incur extra overhead otherwise. The normal intersection
// calculations
// // cause the same caching, making subsequent calculations on the same area
// faster.
// this.preCache(grid, this.referencePosition);
// On the EDT, show the grid.
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
progressBar.setValue(0);
progressBar.setString(null);
clearLayers();
showGrid(grid, referencePosition);
getWwd().redraw();
}
});
// Perform the intersection calculations.
this.startTime = System.currentTimeMillis();
for (Position gridPos : this.grid) // for each grid point.
{
//noinspection ConstantConditions
if (NUM_THREADS > 0) this.threadPool.execute(new Intersector(gridPos));
else performIntersection(gridPos);
}
}
private boolean atMaxLevel(DrawContext dc) {
Position vpc = dc.getViewportCenterPosition();
if (dc.getView() == null || this.getLevels() == null || vpc == null) return false;
if (!this.getLevels().getSector().contains(vpc.getLatitude(), vpc.getLongitude())) return true;
Level nextToLast = this.getLevels().getNextToLastLevel();
if (nextToLast == null) return true;
Sector centerSector =
nextToLast.computeSectorForPosition(
vpc.getLatitude(), vpc.getLongitude(), this.getLevels().getTileOrigin());
return this.needToSplit(dc, centerSector);
}
/**
* Compute the lat/lon position of the view center
*
* @param dc the current DrawContext
* @param view the current View
* @return the ground position of the view center or null
*/
protected Position computeGroundPosition(DrawContext dc, View view) {
if (view == null) return null;
Position groundPos =
view.computePositionFromScreenPoint(
view.getViewport().getWidth() / 2, view.getViewport().getHeight() / 2);
if (groundPos == null) return null;
double elevation =
dc.getGlobe().getElevation(groundPos.getLatitude(), groundPos.getLongitude());
return new Position(
groundPos.getLatitude(),
groundPos.getLongitude(),
elevation * dc.getVerticalExaggeration());
}
public void goTo(Position lookAtPos, double distance) {
Globe globe = this.getView().getGlobe();
BasicFlyView view = (BasicFlyView) this.getView();
Position lookFromPos =
new Position(
lookAtPos,
globe.getElevation(lookAtPos.getLatitude(), lookAtPos.getLongitude()) + distance);
// TODO: scale on mid-altitude?
final long MIN_LENGTH_MILLIS = 4000;
final long MAX_LENGTH_MILLIS = 16000;
long timeToMove =
AnimationSupport.getScaledTimeMillisecs(
view.getEyePosition(), lookFromPos, MIN_LENGTH_MILLIS, MAX_LENGTH_MILLIS);
FlyToFlyViewAnimator panAnimator =
FlyToFlyViewAnimator.createFlyToFlyViewAnimator(
view,
view.getEyePosition(),
lookFromPos,
view.getHeading(),
Angle.ZERO,
view.getPitch(),
Angle.ZERO,
view.getEyePosition().getElevation(),
lookFromPos.getElevation(),
timeToMove,
WorldWind.ABSOLUTE);
this.gotoAnimControl.put(VIEW_ANIM_PAN, panAnimator);
this.getView().firePropertyChange(AVKey.VIEW, null, this.getView());
}
/**
* Sets the vector element at the specified position, as a geographic Position. This buffer's
* logical vector size must be at least 2.
*
* @param position the logical vector position.
* @param p the geographic Position to set.
* @throws IllegalArgumentException if the position is out of range, if the Position is null, or
* if this buffer cannot store a Position.
*/
public void putPosition(int position, Position p) {
if (position < 0 || position >= this.getSize()) {
String message =
Logging.getMessage("generic.ArgumentOutOfRange", "position < 0 or position >= size");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (p == null) {
String message = Logging.getMessage("nullValue.PositionIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (this.coordsPerVec < 2) {
String message = Logging.getMessage("generic.BufferIncompatible", this);
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
double[] compArray = new double[3];
compArray[1] = p.getLatitude().degrees;
compArray[0] = p.getLongitude().degrees;
compArray[2] = p.getElevation();
this.put(position, compArray);
}
protected int determineAdjustmentSide(Movable dragObject, double factor) {
if (dragObject instanceof SurfaceSector) {
SurfaceSector quad = (SurfaceSector) dragObject;
Sector s = quad.getSector(); // TODO: go over all sectors
Position p = this.getWwd().getCurrentPosition();
if (p == null) {
return NONE;
}
double dN = abs(s.getMaxLatitude().subtract(p.getLatitude()).degrees);
double dS = abs(s.getMinLatitude().subtract(p.getLatitude()).degrees);
double dW = abs(s.getMinLongitude().subtract(p.getLongitude()).degrees);
double dE = abs(s.getMaxLongitude().subtract(p.getLongitude()).degrees);
double sLat = factor * s.getDeltaLatDegrees();
double sLon = factor * s.getDeltaLonDegrees();
if (dN < sLat && dW < sLon) return NORTHWEST;
if (dN < sLat && dE < sLon) return NORTHEAST;
if (dS < sLat && dW < sLon) return SOUTHWEST;
if (dS < sLat && dE < sLon) return SOUTHEAST;
if (dN < sLat) return NORTH;
if (dS < sLat) return SOUTH;
if (dW < sLon) return WEST;
if (dE < sLon) return EAST;
}
return NONE;
}
protected static boolean isTileVisible(
DrawContext dc, Tile tile, double minDistanceSquared, double maxDistanceSquared) {
if (!tile.getSector().intersects(dc.getVisibleSector())) return false;
View view = dc.getView();
Position eyePos = view.getEyePosition();
if (eyePos == null) return false;
Angle lat =
clampAngle(
eyePos.getLatitude(),
tile.getSector().getMinLatitude(),
tile.getSector().getMaxLatitude());
Angle lon =
clampAngle(
eyePos.getLongitude(),
tile.getSector().getMinLongitude(),
tile.getSector().getMaxLongitude());
Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
//noinspection RedundantIfStatement
if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;
return true;
}
/**
* Performs one line of sight calculation between the reference position and a specified grid
* position.
*
* @param gridPosition the grid position.
* @throws InterruptedException if the operation is interrupted.
*/
protected void performIntersection(Position gridPosition) throws InterruptedException {
// Intersect the line between this grid point and the selected position.
Intersection[] intersections = this.terrain.intersect(this.referencePosition, gridPosition);
if (intersections == null || intersections.length == 0) {
// No intersection, so the line goes from the center to the grid point.
this.sightLines.add(new Position[] {this.referencePosition, gridPosition});
return;
}
// Only the first intersection is shown.
Vec4 iPoint = intersections[0].getIntersectionPoint();
Vec4 gPoint =
terrain.getSurfacePoint(
gridPosition.getLatitude(), gridPosition.getLongitude(), gridPosition.getAltitude());
// Check to see whether the intersection is beyond the grid point.
if (iPoint.distanceTo3(this.referencePoint) >= gPoint.distanceTo3(this.referencePoint)) {
// Intersection is beyond the grid point; the line goes from the center to the grid point.
this.addSightLine(this.referencePosition, gridPosition);
return;
}
// Compute the position corresponding to the intersection.
Position iPosition = this.terrain.getGlobe().computePositionFromPoint(iPoint);
// The sight line goes from the user-selected position to the intersection position.
this.addSightLine(this.referencePosition, new Position(iPosition, 0));
// Keep track of the intersection positions.
this.addIntersectionPosition(iPosition);
this.updateProgress();
}
private void buildPointPanels() {
deleteBtns.clear();
latTexts.clear();
lngTexts.clear();
points = layer.getPositions();
if (pointPanels.size() != 0) {
for (JPanel p : pointPanels) {
this.remove(p);
}
}
pointPanels.clear();
if (points.size() > 1) {
for (int i = 0; i < points.size(); i++) {
JPanel panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.LEFT));
Position p = points.get(i);
final int index = i;
JLabel label = new JLabel("点" + i + ":");
label.setPreferredSize(labelDimension);
panel.add(label);
JTextField lngTextField = new JTextField();
lngTextField.setText(p.getLongitude().getDegrees() + "");
lngTextField.setPreferredSize(smallComponentDimension);
panel.add(lngTextField);
lngTexts.add(lngTextField);
JTextField latTextField = new JTextField();
latTextField.setText(p.getLatitude().getDegrees() + "");
latTextField.setPreferredSize(smallComponentDimension);
panel.add(latTextField);
latTexts.add(latTextField);
JButton deleteBtn = new JButton();
deleteBtn.setText("删除");
deleteBtn.setPreferredSize(deleteComponentDimension);
ActionListener deleteListener =
new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
if (deleteBtns.size() > 2) {
deleteBtns.remove(index);
points.remove(index);
refreshPointsPanel();
layer.refresh();
if (deleteBtns.size() <= 2) {
for (JButton btn : deleteBtns) {
btn.setEnabled(false);
}
}
}
}
};
deleteBtn.addActionListener(deleteListener);
deleteBtns.add(deleteBtn);
panel.add(deleteBtn);
pointPanels.add(panel);
this.add(panel, pointPanels.size() + 1);
}
}
}
/** 生成DEML，即将这个多边形输出到DEML文件中 */
public Element exportAsDeml() throws IOException {
Document _document = DocumentHelper.createDocument();
Element _feature = _document.addElement("Feature");
Element _type = _feature.addElement("Type");
_type.setText("Polygon");
Element _lName = _feature.addElement("LayerName");
_lName.setText(this.getName());
Element _pointList = _feature.addElement("PointList");
for (Position pos : this.getPositions()) {
Element _point = _pointList.addElement("Point");
_point.addAttribute("Lat", pos.getLatitude().degrees + "");
_point.addAttribute("Lng", pos.getLongitude().degrees + "");
}
Element _attributes = _feature.addElement("Attributes");
Element _outlineMaterial = _attributes.addElement("InteriorMaterial");
_outlineMaterial.addAttribute(
"r", this.getPolygon().getAttributes().getInteriorMaterial().getDiffuse().getRed() + "");
_outlineMaterial.addAttribute(
"g", this.getPolygon().getAttributes().getInteriorMaterial().getDiffuse().getGreen() + "");
_outlineMaterial.addAttribute(
"b", this.getPolygon().getAttributes().getInteriorMaterial().getDiffuse().getBlue() + "");
return _feature;
}
protected Vec4 computeAnnotationPosition(Position pos) {
Vec4 surfacePoint =
this.wwd
.getSceneController()
.getTerrain()
.getSurfacePoint(pos.getLatitude(), pos.getLongitude());
if (surfacePoint == null) {
Globe globe = this.wwd.getModel().getGlobe();
surfacePoint =
globe.computePointFromPosition(
pos.getLatitude(),
pos.getLongitude(),
globe.getElevation(pos.getLatitude(), pos.getLongitude()));
}
return this.wwd.getView().project(surfacePoint);
}
protected void assembleVertexControlPoints(DrawContext dc) {
Terrain terrain = dc.getTerrain();
ExtrudedPolygon polygon = this.getPolygon();
Position refPos = polygon.getReferencePosition();
Vec4 refPoint = terrain.getSurfacePoint(refPos.getLatitude(), refPos.getLongitude(), 0);
int altitudeMode = polygon.getAltitudeMode();
double height = polygon.getHeight();
Vec4 vaa = null;
double vaaLength = 0; // used to compute independent length of each cap vertex
double vaLength = 0;
int i = 0;
for (LatLon location : polygon.getOuterBoundary()) {
Vec4 vert;
// Compute the top/cap point.
if (altitudeMode == WorldWind.CONSTANT || !(location instanceof Position)) {
if (vaa == null) {
// Compute the vector lengths of the top and bottom points at the reference position.
vaa = refPoint.multiply3(height / refPoint.getLength3());
vaaLength = vaa.getLength3();
vaLength = refPoint.getLength3();
}
// Compute the bottom point, which is on the terrain.
vert = terrain.getSurfacePoint(location.getLatitude(), location.getLongitude(), 0);
double delta = vaLength - vert.dot3(refPoint) / vaLength;
vert = vert.add3(vaa.multiply3(1d + delta / vaaLength));
} else if (altitudeMode == WorldWind.RELATIVE_TO_GROUND) {
vert =
terrain.getSurfacePoint(
location.getLatitude(),
location.getLongitude(),
((Position) location).getAltitude());
} else // WorldWind.ABSOLUTE
{
vert =
terrain
.getGlobe()
.computePointFromPosition(
location.getLatitude(),
location.getLongitude(),
((Position) location).getAltitude() * terrain.getVerticalExaggeration());
}
Position vertexPosition = this.wwd.getModel().getGlobe().computePositionFromPoint(vert);
this.controlPoints.add(
new ControlPointMarker(
MOVE_VERTEX_ACTION, vertexPosition, vert, this.vertexControlAttributes, i));
i++;
}
}
public void onSuccess(Position[] positions) {
for (Position p : positions) {
Logging.logger()
.info(
p.getLatitude().degrees
+ ","
+ p.getLongitude().degrees
+ " --> "
+ p.getElevation());
}
}
private void fillPointsPanel() {
int i = 0;
for (Position pos : lineBuilder.getLine().getPositions()) {
if (i == this.pointLabels.length) break;
String las = String.format("Lat %7.4f\u00B0", pos.getLatitude().getDegrees());
String los = String.format("Lon %7.4f\u00B0", pos.getLongitude().getDegrees());
pointLabels[i++].setText(las + " " + los);
}
for (; i < this.pointLabels.length; i++) pointLabels[i++].setText("");
}
protected static boolean isNameVisible(
DrawContext dc, PlaceNameService service, Position namePosition) {
double elevation = dc.getVerticalExaggeration() * namePosition.getElevation();
Vec4 namePoint =
dc.getGlobe()
.computePointFromPosition(
namePosition.getLatitude(), namePosition.getLongitude(), elevation);
Vec4 eyeVec = dc.getView().getEyePoint();
double dist = eyeVec.distanceTo3(namePoint);
return dist >= service.getMinDisplayDistance() && dist <= service.getMaxDisplayDistance();
}
protected static void writeReferencePositions(String filePath, ArrayList<Position> positions)
throws FileNotFoundException {
PrintStream os = new PrintStream(new File(filePath));
for (Position pos : positions) {
os.format(
"%.5f %.5f %.4f\n",
pos.getLatitude().degrees, pos.getLongitude().degrees, pos.getElevation());
}
os.flush();
}
/**
* Reset the view to an orbit view state if in first person mode (zoom = 0)
*
* @param view the orbit view to reset
*/
protected void resetOrbitView(OrbitView view) {
if (view.getZoom() > 0) // already in orbit view mode
return;
// Find out where on the terrain the eye is looking at in the viewport center
// TODO: if no terrain is found in the viewport center, iterate toward viewport bottom until it
// is found
Vec4 centerPoint = computeSurfacePoint(view, view.getHeading(), view.getPitch());
// Reset the orbit view center point heading, pitch and zoom
if (centerPoint != null) {
Vec4 eyePoint = view.getEyePoint();
// Center pos on terrain surface
Position centerPosition = wwd.getModel().getGlobe().computePositionFromPoint(centerPoint);
// Compute pitch and heading relative to center position
Vec4 normal =
wwd.getModel()
.getGlobe()
.computeSurfaceNormalAtLocation(
centerPosition.getLatitude(), centerPosition.getLongitude());
Vec4 north =
wwd.getModel()
.getGlobe()
.computeNorthPointingTangentAtLocation(
centerPosition.getLatitude(), centerPosition.getLongitude());
// Pitch
view.setPitch(Angle.POS180.subtract(view.getForwardVector().angleBetween3(normal)));
// Heading
Vec4 perpendicular = view.getForwardVector().perpendicularTo3(normal);
Angle heading = perpendicular.angleBetween3(north);
double direction = Math.signum(-normal.cross3(north).dot3(perpendicular));
view.setHeading(heading.multiply(direction));
// Zoom
view.setZoom(eyePoint.distanceTo3(centerPoint));
// Center pos
view.setCenterPosition(centerPosition);
}
}
private static Position clampedCenter(Position unclampedCenter) {
if (unclampedCenter == null) return null;
// Clamp latitude to the range [-90, 90],
// Normalize longitude to the range [-180, 180],
// Don't change elevation.
double lat = unclampedCenter.getLatitude().degrees;
double lon = unclampedCenter.getLongitude().degrees;
double elev = unclampedCenter.getElevation();
lon = lon % 360;
return Position.fromDegrees(
lat > 90 ? 90 : (lat < -90 ? -90 : lat),
lon > 180 ? lon - 360 : (lon < -180 ? 360 + lon : lon),
elev);
}
private Vec4 computeReferencePoint(DrawContext dc) {
if (dc.getViewportCenterPosition() != null)
return dc.getGlobe().computePointFromPosition(dc.getViewportCenterPosition());
java.awt.geom.Rectangle2D viewport = dc.getView().getViewport();
int x = (int) viewport.getWidth() / 2;
for (int y = (int) (0.5 * viewport.getHeight()); y >= 0; y--) {
Position pos = dc.getView().computePositionFromScreenPoint(x, y);
if (pos == null) continue;
return dc.getGlobe().computePointFromPosition(pos.getLatitude(), pos.getLongitude(), 0d);
}
return null;
}
protected boolean isNavSectorVisible(
DrawContext dc, double minDistanceSquared, double maxDistanceSquared) {
if (!navSector.intersects(dc.getVisibleSector())) return false;
View view = dc.getView();
Position eyePos = view.getEyePosition();
if (eyePos == null) return false;
// check for eyePos over globe
if (Double.isNaN(eyePos.getLatitude().getDegrees())
|| Double.isNaN(eyePos.getLongitude().getDegrees())) return false;
Angle lat =
clampAngle(eyePos.getLatitude(), navSector.getMinLatitude(), navSector.getMaxLatitude());
Angle lon =
clampAngle(
eyePos.getLongitude(), navSector.getMinLongitude(), navSector.getMaxLongitude());
Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
//noinspection RedundantIfStatement
if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;
return true;
}
private void makeSectionVertices(
DrawContext dc,
int locationPos,
float[] locations,
double[] altitude,
boolean[] terrainConformant,
int subdivisions,
Matrix locationTransform,
Vec4 referenceCenter,
int vertexPos,
float[] vertices) {
GeometryBuilder gb = this.getGeometryBuilder();
int numPoints = gb.getSubdivisionPointsVertexCount(subdivisions);
Globe globe = dc.getGlobe();
int index1 = 3 * locationPos;
int index2 = 3 * (locationPos + 1);
float[] locationVerts = new float[3 * numPoints];
gb.makeSubdivisionPoints(
locations[index1],
locations[index1 + 1],
locations[index1 + 2],
locations[index2],
locations[index2 + 1],
locations[index2 + 2],
subdivisions,
locationVerts);
for (int i = 0; i < numPoints; i++) {
int index = 3 * i;
Vec4 vec = new Vec4(locationVerts[index], locationVerts[index + 1], locationVerts[index + 2]);
vec = vec.transformBy4(locationTransform);
Position pos = globe.computePositionFromPoint(vec);
for (int j = 0; j < 2; j++) {
vec =
this.computePointFromPosition(
dc, pos.getLatitude(), pos.getLongitude(), altitude[j], terrainConformant[j]);
index = 2 * i + j;
index = 3 * (vertexPos + index);
vertices[index] = (float) (vec.x - referenceCenter.x);
vertices[index + 1] = (float) (vec.y - referenceCenter.y);
vertices[index + 2] = (float) (vec.z - referenceCenter.z);
}
}
}
private void makeCap(
DrawContext dc,
GeometryBuilder.IndexedTriangleArray ita,
double altitude,
boolean terrainConformant,
int orientation,
Matrix locationTransform,
Vec4 referenceCenter,
int indexPos,
int[] indices,
int vertexPos,
float[] vertices,
float[] normals) {
GeometryBuilder gb = this.getGeometryBuilder();
Globe globe = dc.getGlobe();
int indexCount = ita.getIndexCount();
int vertexCount = ita.getVertexCount();
int[] locationIndices = ita.getIndices();
float[] locationVerts = ita.getVertices();
this.copyIndexArray(
indexCount,
(orientation == GeometryBuilder.INSIDE),
locationIndices,
vertexPos,
indexPos,
indices);
for (int i = 0; i < vertexCount; i++) {
int index = 3 * i;
Vec4 vec = new Vec4(locationVerts[index], locationVerts[index + 1], locationVerts[index + 2]);
vec = vec.transformBy4(locationTransform);
Position pos = globe.computePositionFromPoint(vec);
vec =
this.computePointFromPosition(
dc, pos.getLatitude(), pos.getLongitude(), altitude, terrainConformant);
index = 3 * (vertexPos + i);
vertices[index] = (float) (vec.x - referenceCenter.x);
vertices[index + 1] = (float) (vec.y - referenceCenter.y);
vertices[index + 2] = (float) (vec.z - referenceCenter.z);
}
gb.makeIndexedTriangleArrayNormals(
indexPos, indexCount, indices, vertexPos, vertexCount, vertices, normals);
}
public void computeZone(DrawContext dc) {
try {
Position centerPos = ((OrbitView) dc.getView()).getCenterPosition();
if (centerPos != null) {
if (centerPos.latitude.degrees <= UTM_MAX_LATITUDE
&& centerPos.latitude.degrees >= UTM_MIN_LATITUDE) {
UTMCoord UTM =
UTMCoord.fromLatLon(
centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
this.zone = UTM.getZone();
} else this.zone = 0;
}
} catch (Exception ex) {
this.zone = 0;
}
}
protected Sector resizeShape(Movable dragObject, int side) {
if (dragObject instanceof SurfaceSector) {
SurfaceSector quad = (SurfaceSector) dragObject;
Sector s = quad.getSector(); // TODO: go over all sectors
Position p = this.getWwd().getCurrentPosition();
if (p == null || this.getPreviousPosition() == null) {
return null;
}
Angle dLat = p.getLatitude().subtract(this.getPreviousPosition().getLatitude());
Angle dLon = p.getLongitude().subtract(this.getPreviousPosition().getLongitude());
Angle newMinLat = s.getMinLatitude();
Angle newMinLon = s.getMinLongitude();
Angle newMaxLat = s.getMaxLatitude();
Angle newMaxLon = s.getMaxLongitude();
if (side == NORTH) {
newMaxLat = s.getMaxLatitude().add(dLat);
} else if (side == SOUTH) {
newMinLat = s.getMinLatitude().add(dLat);
} else if (side == EAST) {
newMaxLon = s.getMaxLongitude().add(dLon);
} else if (side == WEST) {
newMinLon = s.getMinLongitude().add(dLon);
} else if (side == NORTHWEST) {
newMaxLat = s.getMaxLatitude().add(dLat);
newMinLon = s.getMinLongitude().add(dLon);
} else if (side == NORTHEAST) {
newMaxLat = s.getMaxLatitude().add(dLat);
newMaxLon = s.getMaxLongitude().add(dLon);
} else if (side == SOUTHWEST) {
newMinLat = s.getMinLatitude().add(dLat);
newMinLon = s.getMinLongitude().add(dLon);
} else if (side == SOUTHEAST) {
newMinLat = s.getMinLatitude().add(dLat);
newMaxLon = s.getMaxLongitude().add(dLon);
}
return new Sector(newMinLat, newMaxLat, newMinLon, newMaxLon);
}
return null;
}