private ObjectId findClosestCenter(Viewport viewport, Map<ObjectId, GalaxySystem> systems) {
double cx = viewport.getView().getCenterX();
double cy = viewport.getView().getCenterY();
double targetdist = Math.sqrt(cx * cx + cy * cy);
double targetalpha = Math.atan2(cy, cx);
ObjectId result = null;
double distance = Double.MAX_VALUE;
for (GalaxySystem system : systems.values()) {
OrbitStatus status = system.getGalaxyOrbitStatus();
double check =
SpaceFunctionUtil.distanceBetweenTwoObjects(
targetalpha, targetdist, status.getAlpha(), status.getDistance());
if (distance > check) {
distance = check;
result = system.getId();
}
}
return result;
}
private void initiateFocus(Viewport viewport, Map<ObjectId, GalaxySystem> systems) {
GalaxySystem focuson = systems.get(focusid);
OrbitStatus absoluteCenter = focuson.getGalaxyOrbitStatus();
xoff = absoluteCenter.getCartesianX();
yoff = absoluteCenter.getCartesianY();
logger.debug(String.format("orbit status: %s", absoluteCenter));
logger.debug(
String.format(
"orbit status: [x:%s, y:%s]",
absoluteCenter.getCartesianX(), absoluteCenter.getCartesianY()));
double xoffinit = absoluteCenter.getDistance() * Math.cos(absoluteCenter.getAlpha());
double yoffinit = absoluteCenter.getDistance() * Math.sin(absoluteCenter.getAlpha());
double largestdist = WindowFocusType.MULTI_SYSTEM.maxin * 1.1;
double dy = viewport.getReal().getHeight();
double dx = viewport.getReal().getWidth();
Rectangle2D newview;
if (dy < dx) {
double ratio = (dx / dy);
newview =
new Rectangle2D.Double(
xoffinit + largestdist * ratio * -1,
yoffinit + largestdist * -1,
largestdist * ratio * 2,
largestdist * 2);
} else {
double ratio = (dy / dx);
newview =
new Rectangle2D.Double(
xoffinit + largestdist * -1,
yoffinit + largestdist * ratio * -1,
largestdist * 2,
largestdist * ratio * 2);
}
logger.info(String.format("setting new view to %s", newview));
viewport.setView(newview);
updateFocusingOn(viewport);
}
private void viewShiftUpdate(Viewport viewport, Map<ObjectId, GalaxySystem> systems) {
GalaxySystem focus = systems.get(focusid);
OrbitStatus absoluteCenter = focus.getGalaxyOrbitStatus();
double xcheck = absoluteCenter.getCartesianX();
double ycheck = absoluteCenter.getCartesianY();
Rectangle2D view = viewport.getView();
double xchange = xoff - xcheck;
double ychange = yoff - ycheck;
if (xchange != 0 || ychange != 0) {
logger.debug(String.format("orbit status: %s", absoluteCenter));
logger.debug(String.format("changing focus-> x:%s, y:%s", xchange, ychange));
logger.debug(String.format("before: %s", view));
view.setRect(view.getX() - xchange, view.getY() - ychange, view.getWidth(), view.getHeight());
logger.debug(String.format("after : %s", view));
}
xoff = xcheck;
yoff = ycheck;
ObjectId newidcheck = findClosestCenter(viewport, systems);
if (!newidcheck.equals(focusid)) {
// if they are not equal, then we need to change
// the focus id to the new one. but first we need
// to reset the x and y offset to make sure the
// view stays smooth.
GalaxySystem newfocus = systems.get(newidcheck);
OrbitStatus newcenter = newfocus.getGalaxyOrbitStatus();
xoff = newcenter.getCartesianX();
yoff = newcenter.getCartesianY();
focusid = newidcheck;
if (logger.isInfoEnabled()) {
logger.info(String.format("new focus id set to %s", focusid));
}
}
}