Describir: Robin Evans. <i>The Projective Cast: architecture and its three geometries</i> : Cambridge, Mass., and London: The MIT Press, 1995

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