def write_d_pt(points = nil)
      return unless ptrue?(points)

      index = -1
      points.each do |point|
        index += 1
        next unless ptrue?(point)

        write_d_pt_point(index, point)
      end
    end
def write_d_pt(points = nil)
      return unless ptrue?(points)

      index = -1
      points.each do |point|
        index += 1
        next unless ptrue?(point)

        write_d_pt_point(index, point)
      end
    end
Write the <c:dPt> elements.