/**
* {@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);
}
}
protected void computeQuadSize(DrawContext dc) {
if (this.positions == null) return;
Iterator<? extends Position> iterator = this.positions.iterator();
Position pos1 = iterator.next();
Position pos2 = iterator.next();
Angle angularDistance = LatLon.greatCircleDistance(pos1, pos2);
double length = angularDistance.radians * dc.getGlobe().getRadius();
this.quad.setWidth(length);
}
/** {@inheritDoc} */
@Override
public void setModifier(String modifier, Object value) {
if (SymbologyConstants.DISTANCE.equals(modifier)) {
if (value instanceof Double) {
this.setWidth((Double) value);
} else if (value instanceof Iterable) {
// Only use the first value of the iterable. This graphic uses two control points and a
// width.
Iterator iterator = ((Iterable) value).iterator();
this.setWidth((Double) iterator.next());
}
} else {
super.setModifier(modifier, value);
}
}