This site started as a fun hobby project to solve a problem I had, and it served its purpose for a while. The number of users has been dropping, though, and the hosting is a non-trivial cost. As a result I may be shutting it down in late 2013.
If that happens I'll likely post the codebases to github in case anyone wants to pick up where this left off.
Point-line distance (fixed)
posted by Dan S.
posted 5y 58d ago
The line is defined by vectors and as above; the point is the vector .
If we draw a line from to the closest point of , it will be perpendicular to . Call this closest point .