/**
* Generate the positions required to draw the line.
*
* @param dc Current draw context.
* @param positions Positions that define the polygon boundary.
*/
@Override
protected void generateIntermediatePositions(
DrawContext dc, Iterable<? extends Position> positions) {
Globe globe = dc.getGlobe();
boolean useDefaultWaveLength = false;
double waveLength = this.getWaveLength();
if (waveLength == 0) {
waveLength = this.computeDefaultWavelength(positions, globe);
useDefaultWaveLength = true;
}
// Generate lines that parallel the control line.
List<Position> leftPositions = new ArrayList<Position>();
List<Position> rightPositions = new ArrayList<Position>();
this.generateParallelLines(
positions.iterator(), leftPositions, rightPositions, waveLength / 2.0, globe);
if (useDefaultWaveLength) waveLength = this.computeDefaultWavelength(leftPositions, globe);
double radius = (waveLength) / 2.0;
// Generate wavy line to the left of the control line.
PositionIterator iterator = new PositionIterator(leftPositions, waveLength, globe);
this.computedPositions =
this.generateWavePositions(iterator, radius / globe.getRadius(), false);
this.path.setPositions(this.computedPositions);
if (useDefaultWaveLength) waveLength = this.computeDefaultWavelength(rightPositions, globe);
radius = (waveLength) / 2.0;
// Generate wavy line to the right of the control line.
iterator = new PositionIterator(rightPositions, waveLength, globe);
this.path2.setPositions(this.generateWavePositions(iterator, radius / globe.getRadius(), true));
}
/**
* {@inheritDoc}
*
* @param positions Control points. This graphic uses only two control point, which determine the
* midpoints of two opposite sides of the quad. See Fire Support Area (2.X.4.3.2.1.2) on pg.
* 652 of MIL-STD-2525C for an example of how these points are interpreted.
*/
public void setPositions(Iterable<? extends Position> positions) {
if (positions == null) {
String message = Logging.getMessage("nullValue.PositionsListIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
Iterator<? extends Position> iterator = positions.iterator();
try {
Position pos1 = iterator.next();
Position pos2 = iterator.next();
LatLon center = LatLon.interpolateGreatCircle(0.5, pos1, pos2);
this.quad.setCenter(center);
Angle heading = LatLon.greatCircleAzimuth(pos2, pos1);
this.quad.setHeading(heading.subtract(Angle.POS90));
this.positions = positions;
this.shapeInvalid = true; // Need to recompute quad size
} catch (NoSuchElementException e) {
String message = Logging.getMessage("generic.InsufficientPositions");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
}
/**
* {@inheritDoc}
*
* @param positions Control points that orient the graphic. Must provide at least three points.
*/
public void setPositions(Iterable<? extends Position> positions) {
if (positions == null) {
String message = Logging.getMessage("nullValue.PositionsListIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
try {
Iterator<? extends Position> iterator = positions.iterator();
this.position1 = iterator.next();
this.position2 = iterator.next();
this.position3 = iterator.next();
} catch (NoSuchElementException e) {
String message = Logging.getMessage("generic.InsufficientPositions");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
this.paths = null; // Need to recompute path for the new control points
this.arrowHead1 = null;
this.arrowHead2 = null;
if (this.symbol != null) {
this.symbol.setPosition(this.position1);
}
}
/**
* {@inheritDoc}
*
* @param positions Control points. This graphic uses only one control point, which determines the
* center of the circle.
*/
public void setPositions(Iterable<? extends Position> positions) {
if (positions == null) {
String message = Logging.getMessage("nullValue.PositionsListIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
try {
// Ensure that the iterable provides at least four positions.
Iterator<? extends Position> iterator = positions.iterator();
for (int i = 0; i < 3; i++) {
iterator.next();
}
} catch (NoSuchElementException e) {
String message = Logging.getMessage("generic.InsufficientPositions");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
this.positions = positions;
this.rings = null;
}
protected void drawMany(DrawContext dc, Iterable<? extends WWIcon> icons, Layer layer) {
if (dc == null) {
String msg = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
if (dc.getVisibleSector() == null) return;
SectorGeometryList geos = dc.getSurfaceGeometry();
//noinspection RedundantIfStatement
if (geos == null) return;
if (icons == null) {
String msg = Logging.getMessage("nullValue.IconIterator");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
Iterator<? extends WWIcon> iterator = icons.iterator();
if (!iterator.hasNext()) return;
double horizon = dc.getView().getHorizonDistance();
while (iterator.hasNext()) {
WWIcon icon = iterator.next();
if (!isIconValid(icon, true)) {
// Record feedback data for this WWIcon if feedback is enabled.
if (icon != null) this.recordFeedback(dc, icon, null, null);
continue;
}
if (!icon.isVisible()) {
// Record feedback data for this WWIcon if feedback is enabled.
this.recordFeedback(dc, icon, null, null);
continue;
}
// Determine Cartesian position from the surface geometry if the icon is near the surface,
// otherwise draw it from the globe.
Position pos = icon.getPosition();
Vec4 iconPoint = null;
if (pos.getElevation() < dc.getGlobe().getMaxElevation()
&& !this.isAlwaysUseAbsoluteElevation()) {
iconPoint = dc.getSurfaceGeometry().getSurfacePoint(icon.getPosition());
}
if (iconPoint == null) {
Angle lat = pos.getLatitude();
Angle lon = pos.getLongitude();
double elevation = pos.getElevation();
if (!this.isAlwaysUseAbsoluteElevation()) elevation += dc.getGlobe().getElevation(lat, lon);
iconPoint = dc.getGlobe().computePointFromPosition(lat, lon, elevation);
}
double eyeDistance =
icon.isAlwaysOnTop() ? 0 : dc.getView().getEyePoint().distanceTo3(iconPoint);
// X-PATCH Marjan
// extracted skip conditions into an overrideable method
if (!meetsRenderCriteria(dc, icon, iconPoint, eyeDistance)) {
this.recordFeedback(dc, icon, iconPoint, null);
continue;
}
// X-END
// The icons aren't drawn here, but added to the ordered queue to be drawn back-to-front.
dc.addOrderedRenderable(new OrderedIcon(icon, iconPoint, layer, eyeDistance, horizon));
if (icon.isShowToolTip()) this.addToolTip(dc, icon, iconPoint);
}
}
