segment_at (PDF::Writer::Graphics)

         # File lib/pdf/writer/graphics.rb, line 301
    301:   def segment_at(x, y, r1, r2 = r1, start = 0, stop = 360, segments = 8)
    302:     ellipse2_at(x, y, r1, r2, start, stop, segments)
    303:
    304:     start = PDF::Math.deg2rad(start)
    305:     stop  = PDF::Math.deg2rad(stop)
    306:
    307:     ax = x + r1 * Math.cos(start)
    308:     ay = y + r2 * Math.sin(start)
    309:     bx = x + r1 * Math.cos(stop)
    310:     by = y + r2 * Math.sin(stop)
    311:
    312:     move_to(ax, ay)
    313:     line_to(x, y)
    314:     line_to(bx, by)
    315:     move_to(x, y)
    316:     self
    317:   end