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

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