public static int getArea(final List<BlockVector2D> points){
        int[] x = new int[points.size()];
        int[] z = new int[points.size()];

        for(int i = 0; i<points.size(); i++){
            x[i] = points.get(i).getBlockX();
            z[i] = points.get(i).getBlockZ();
        }

        int firstSum = 0;
        for(int i = 0; i<points.size()-1; i++)
            firstSum = x[i]*z[i+1];

        int secondSum = 0;
        for(int i = 0; i<points.size()-1; i++)
            secondSum = z[i]*x[i+1];

        firstSum -= secondSum;

        return firstSum / 2;
    }