/**
* Remove the specified zone from the zone picker
*
* @param zone the zone to remove
* @return The zone that was removed
*/
public Zone remove(Zone zone) {
Color color = zone.getPickColor();
int pixelColor = color.getAlpha() + (color.getRGB() << 8);
Zone removed = zoneMap.remove(pixelColor);
zone.setPickColor(null);
return removed;
}
/**
* Add a zone to the zone picker.
*
* @param zone the zone to enable picking on.
*/
public void add(Zone zone) {
// check if we already have this zone
if (zoneMap.containsValue(zone)) return;
if (zoneMap.size() == POSSIBLE_COLORS) {
// We've run out of pick colours :( oh no
System.err.printf(
"The number of zones has exceeded the maximum number of pickable zones (%d). This recently added zone (%s) will not be pickable.",
POSSIBLE_COLORS, zone);
return;
}
// get a new colour
zone.setPickColor(new Color(currentColor, false));
int pixelColor = 0xff + (currentColor << 8);
zoneMap.put(pixelColor, zone);
// dont bother searching if we're out of colours anyways
if (zoneMap.size() < POSSIBLE_COLORS) {
while (zoneMap.containsKey(pixelColor)) {
currentColor += 1;
pixelColor = 0xff + (currentColor << 8);
}
}
// add all of the zone's child zones
for (Zone child : zone.getChildren()) this.add(child);
}