FOOT
The foot of a perpendicular from a point to an element.
Syntax
FOOT(@e,p)
| Argument | Meaning |
|---|---|
| @e | The element. |
| p | The position to drop the perpendicular from. |
Result
A position: on a line segment, on its whole line; on an arc or circle, on its whole circle; on any other curve, its nearest point.
Examples
In the example drawing:
| Expression | Gives |
|---|---|
FOOT(@5,P6) |
[60,0] |
FOOT(@6,P6) |
[52.8284,29.799] |
Notes
It follows the element: a point defined this way moves when the element does, and is never fixed in space. The Perpendicular snap writes it, from the last point marked.