boolean extending = range[0] == lastRange[1] + lastDirection;
boolean overlapping = (lastDirection == 1 && range[0] >= lastRange[0] && range[0] <= lastRange[1])
|| (lastDirection == -1 && range[0] <= lastRange[0] && range[0] >= lastRange[1]);
boolean extending = range[0] == lastRange[1] + lastDirection;
boolean overlapping = (lastDirection == 1 && range[0] >= lastRange[0] && range[0] <= lastRange[1])
|| (lastDirection == -1 && range[0] <= lastRange[0] && range[0] >= lastRange[1]);