libharu:HPDFPage#arc
#!/usr/bin/env ruby require "hpdf" pdf = HPDFDoc.new page = pdf.add_page page.arc(100, 100, 90, 0, 270) page.fill page.arc(300, 100, 90, 90, 360) page.stroke page.arc(200, 500, 10, 90, 360) page.stroke pdf.save_to_file(File.basename($0, ".rb") + ".pdf")
第三引数は何?大きさ???半径か〜