Vector paths

Sample PDF for this guide: table.pdf — page 1 contains a table drawn with real ruling lines.

Real path-segment iteration (not just bounding boxes), with a state machine for closepath. Useful for table line detection, signatures, and form layout analysis:

require "rpdfium"

Rpdfium.open("table.pdf") do |doc|
  page = doc.page(0)
  puts "horizontal=#{page.horizontal_lines.size} vertical=#{page.vertical_lines.size}"
  pp page.horizontal_lines.first
end

Output:

horizontal=210 vertical=210
{y: 89.29, x0: 50.5, x1: 120.5, stroke_width: 1.0}

(The generator draws each table cell with its own border, so a 13×5 grid produces many short segments — exactly what the table pipeline’s snap-and-join step is for.)

The generic accessor returns every segment with full geometry:

page.line_segments
# [{ x0: 72.0, y0: 100.0, x1: 540.0, y1: 100.0, stroke_width: 0.5 }, ...]

These geometric primitives feed the :lines strategy of the table extractor — but they are useful on their own whenever you need the actual drawn geometry of a page.