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dotSCAD/docs/lib3x-arc_path.md
2022-06-06 13:11:46 +08:00

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# arc_path
Creates an arc path. You can pass a 2 element vector to define the central angle. Its `$fa`, `$fs` and `$fn` parameters are consistent with the `circle` module.
## Parameters
- `radius` : The radius of the circle.
- `angle` : A single value or a 2 element vector which defines the central angle. The first element of the vector is the beginning angle in degrees, and the second element is the ending angle.
- `$fa`, `$fs`, `$fn` : Check [the circle module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#circle) for more details.
## Examples
use <arc_path.scad>
use <polyline_join.scad>
$fn = 24;
points = arc_path(radius = 20, angle = [45, 290]);
polyline_join(points)
circle(1);
![arc_path](images/lib3x-arc_path-1.JPG)
use <arc_path.scad>
use <polyline_join.scad>
$fn = 24;
points = arc_path(radius = 20, angle = 135);
polyline_join(points)
circle(1);
![arc_path](images/lib3x-arc_path-2.JPG)