Text this: Globally consistent wrinkle-aware shading of line drawings

  ______   __   __    ______     ___     _    _   
 /_   _//  \ \\/ //  /_____//   / _ \\  | || | || 
 `-| |,-    \ ` //   `____ `   | / \ || | || | || 
   | ||      | ||    /___//    | \_/ || | \\_/ || 
   |_||      |_||    `__ `      \___//   \____//  
   `-`'      `-`'    /_//       `---`     `---`   
                     `-`