protected void movePolygon(Point previousMousePoint, Point mousePoint) {
// Intersect a ray through each mouse point, with a geoid passing through the reference
// elevation.
// If either ray fails to intersect the geoid, then ignore this event. Use the difference
// between the two
// intersected positions to move the control point's location.
View view = this.wwd.getView();
Globe globe = this.wwd.getModel().getGlobe();
Position refPos = this.polygon.getReferencePosition();
if (refPos == null) return;
Line ray = view.computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
Line previousRay =
view.computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());
Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray);
Vec4 previousVec =
AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay);
if (vec == null || previousVec == null) {
return;
}
Position pos = globe.computePositionFromPoint(vec);
Position previousPos = globe.computePositionFromPoint(previousVec);
LatLon change = pos.subtract(previousPos);
this.polygon.move(new Position(change.getLatitude(), change.getLongitude(), 0.0));
}
/**
* Determine the point at which a ray intersects a the globe at the elevation of the polygon.
*
* @param ray Ray to intersect with the globe.
* @return The point at which the ray intersects the globe at the elevation of the polygon.
*/
protected Vec4 intersectPolygonAltitudeAt(Line ray) {
// If there are control points computed, use the elevation of the first control point as the
// polygon elevation.
// Otherwise, if there are no control points, intersect the globe at sea level
double elevation = 0.0;
if (this.controlPoints.size() > 0) {
elevation = this.controlPoints.get(0).getPosition().getElevation();
}
return AirspaceEditorUtil.intersectGlobeAt(this.wwd, elevation, ray);
}
protected void moveControlPoint(
ControlPointMarker controlPoint, Point lastMousePoint, Point moveToPoint) {
View view = this.wwd.getView();
Globe globe = this.wwd.getModel().getGlobe();
Position refPos = controlPoint.getPosition();
if (refPos == null) return;
Line ray = view.computeRayFromScreenPoint(moveToPoint.getX(), moveToPoint.getY());
Line previousRay = view.computeRayFromScreenPoint(lastMousePoint.getX(), lastMousePoint.getY());
Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray);
Vec4 previousVec =
AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay);
if (vec == null || previousVec == null) {
return;
}
Position pos = globe.computePositionFromPoint(vec);
Position previousPos = globe.computePositionFromPoint(previousVec);
LatLon change = pos.subtract(previousPos);
java.util.List<LatLon> boundary = new ArrayList<LatLon>();
for (LatLon ll : this.polygon.getOuterBoundary()) {
boundary.add(ll);
}
boundary.set(controlPoint.getIndex(), new Position(pos.add(change), refPos.getAltitude()));
// ExtrudedPolygon ensures that the last boundary position is the same as the first. Remove the
// last point
// before setting the boundary.
boundary.remove(boundary.size() - 1);
this.polygon.setOuterBoundary(boundary);
}