"Fun" C++ library that interprets ASCII figures in code - what is it called? ("Multi-Dimensional Analog Literals")

A while ago I stumbled upon a C++ gem, a set of classes that through operator overloading and possibly some preprocessor tricks, let you define variables using in-code ASCII art: ``` Line x = |-----|; //x is 5 Line y = |---|; //y is 3 Rectangle r = +---+ | | +---+; //r is 3 by 1 ``` and IIRC, it even had support for 3D figures! But for the life of me I cannot remember the name of this library/header file/set of classes. What is it called?