Editing Ivan Sutherland (section)

==Early life and education==
Sutherland's father was from New Zealand; his mother, Anne Sutherland, was from Scotland. His family moved to [[Wilmette, Illinois]], then [[Scarsdale, New York]], for his father's career. [[Bert Sutherland]] was his elder brother.<ref>Archived at [https://ghostarchive.org/varchive/youtube/20211211/NZJxwzVx5BY Ghostarchive]{{cbignore}} and the [https://web.archive.org/web/20200221173958/https://www.youtube.com/watch?v=NZJxwzVx5BY Wayback Machine]{{cbignore}}: {{cite interview |last=Sutherland |first=Bert |subject-link=Bert Sutherland |interviewer=David C. Brock and Bob Sproull |title=Oral History of Bert Sutherland |url=https://www.youtube.com/watch?v=NZJxwzVx5BY |publisher=YouTube |location=[[Computer History Museum]], [[Mountain View, California]] |date=February 21, 2020 |orig-year=Interview took place on May 25, 2017 |access-date=February 21, 2020}}{{cbignore}}</ref> Ivan Sutherland earned his [[bachelor's degree]] in electrical engineering from the [[Carnegie Institute of Technology]], his master's degree from [[Caltech]], and his Ph.D. from [[MIT]] in [[electrical engineering]] in 1963.<ref name="CV" /><ref name=mathgene>{{MathGenealogy}}</ref>

Sutherland invented [[Sketchpad]] in 1962 while at MIT. [[Claude Shannon]] signed on to supervise Sutherland's computer drawing thesis.<ref name=mathgene/> Among others on his thesis committee were [[Marvin Minsky]] and [[Steven Coons]]. Sketchpad was an innovative program that influenced alternative forms of interaction with computers. Sketchpad could accept constraints and specified relationships among segments and arcs, including the diameter of arcs. It could draw both horizontal and vertical lines and combine them into figures and shapes. Figures could be copied, moved, rotated, or resized, retaining their basic properties. Sketchpad also had the first window-drawing program and clipping algorithm, which allowed zooming. Sketchpad ran on the [[Lincoln TX-2]] computer.