# File lib/pdf/writer/graphics.rb, line 376
376:   def rounded_rectangle(x, y, w, h, r)
377:     x1 = x
378:     x2 = x1 + w
379:     y1 = y
380:     y2 = y1 - h
381: 
382:     r1 = r
383:     r2 = r / 2.0
384: 
385:     points = [
386:       [ x1 + r1, y1,      :line  ],
387:       [ x2 - r1, y1,      :line  ],
388:       [ x2 - r2, y1,      :curve ], # cp1
389:       [ x2,      y1 - r2,        ], # cp2
390:       [ x2,      y1 - r1,        ], # ep
391:       [ x2,      y2 + r1, :line  ],
392:       [ x2,      y2 + r2, :curve ], # cp1
393:       [ x2 - r2, y2,             ], # cp2
394:       [ x2 - r1, y2,             ], # ep
395:       [ x1 + r1, y2,      :line  ],
396:       [ x1 + r2, y2,      :curve ], # cp1
397:       [ x1,      y2 + r2,        ], # cp2
398:       [ x1,      y2 + r1,        ], # ep
399:       [ x1,      y1 - r1, :line  ],
400:       [ x1,      y1 - r2, :curve ], # cp1
401:       [ x1 + r2, y1,             ], # cp2
402:       [ x1 + r1, y1,             ], # ep
403:     ]
404:     polygon(points)
405:     move_to(x2, y2)
406:     self
407:   end