douglas peucker implementation glitch

[drunkhacker]

        if ($distanceMax > $this->tolerance) {
            $lineSplitFirst  = array_slice($line, 0, $index);
            $lineSplitSecond = array_slice($line, $index, $lineSize);
            $resultsSplit1 = $this->douglasPeucker($lineSplitFirst);
            $resultsSplit2 = $this->douglasPeucker($lineSplitSecond);
            array_pop($resultsSplit1);
            return array_merge($resultsSplit1, $resultsSplit2);
        }

I think $resultsSplit1's last point shouldn't be dropped because $lineSplitFirst already only contains [$line[0],..., $line[$index-1]] because array_slice's second argument isn't inclusive. array_pop causes loose the point whose index is $index-1.