private boolean atMaxLevel(DrawContext dc) {
Position vpc = dc.getViewportCenterPosition();
if (dc.getView() == null || this.getLevels() == null || vpc == null) return false;
if (!this.getLevels().getSector().contains(vpc.getLatitude(), vpc.getLongitude())) return true;
Level nextToLast = this.getLevels().getNextToLastLevel();
if (nextToLast == null) return true;
Sector centerSector =
nextToLast.computeSectorForPosition(
vpc.getLatitude(), vpc.getLongitude(), this.getLevels().getTileOrigin());
return this.needToSplit(dc, centerSector);
}
private Vec4 computeReferencePoint(DrawContext dc) {
if (dc.getViewportCenterPosition() != null)
return dc.getGlobe().computePointFromPosition(dc.getViewportCenterPosition());
java.awt.geom.Rectangle2D viewport = dc.getView().getViewport();
int x = (int) viewport.getWidth() / 2;
for (int y = (int) (0.5 * viewport.getHeight()); y >= 0; y--) {
Position pos = dc.getView().computePositionFromScreenPoint(x, y);
if (pos == null) continue;
return dc.getGlobe().computePointFromPosition(pos.getLatitude(), pos.getLongitude(), 0d);
}
return null;
}