script-based vector graphics language inspired by MetaPost - the GUI part

 Asymptote is a powerful script-based vector graphics language for technical
 drawings, inspired by MetaPost but with an improved C++-like syntax.
 Asymptote provides for figures the same high-quality level of typesetting that
 LaTeX does for scientific text.
 .
 In the event that adjustments to the final figure are required, the
 preliminary Graphical User Interface (GUI) xasy included with Asymptote allows
 you to move graphical objects and draw new ones. The modified figure can then
 be saved as a normal Asymptote file.