@Override
public Coordinate[] getLocations() {
if (null == this.parent) {
throw new BugException(
" Attempted to get absolute position Vector of a Stage without a parent. ");
}
if (this.isAfter()) {
return super.getLocations();
} else {
Coordinate[] parentInstances = this.parent.getLocations();
if (1 != parentInstances.length) {
throw new BugException(
" OpenRocket does not (yet) support external stages attached to external stages. "
+ "(assumed reason for getting multiple parent locations into an external stage.)");
}
final Coordinate center = parentInstances[0].add(this.position);
Coordinate[] instanceLocations = this.getInstanceOffsets();
Coordinate[] toReturn = new Coordinate[instanceLocations.length];
for (int i = 0; i < toReturn.length; i++) {
toReturn[i] = center.add(instanceLocations[i]);
}
return toReturn;
}
}
@Override
public Coordinate[] getInstanceOffsets() {
checkState();
final double radius = this.radialPosition_m;
final double startAngle = this.angularPosition_rad;
final double angleIncr = this.angularSeparation;
Coordinate center = Coordinate.ZERO;
double curAngle = startAngle;
Coordinate[] toReturn = new Coordinate[this.count];
for (int instanceNumber = 0; instanceNumber < this.count; instanceNumber++) {
final double curY = radius * Math.cos(curAngle);
final double curZ = radius * Math.sin(curAngle);
toReturn[instanceNumber] = center.add(0, curY, curZ);
curAngle += angleIncr;
}
return toReturn;
}