Returns shape points of a regular cyclic polygon. They can be used with xxx_extrude modules of dotSCAD. The shape points can be also used with the built-in polygon module.

## Parameters

`sides`

: The radius of the circle.`circle_r`

: The radius of the circumcircle.`corner_r`

: The radius of the circle at a corner.`$fa`

,`$fs`

,`$fn`

: Check the circle module for more details.

## Examples

```
include <shape_cyclicpolygon.scad>;
circle_r = 10;
corner_r = 3;
$fn = 24;
for(i = [0:2]) {
translate([i * circle_r * 2, 0, 0])
polygon(
shape_cyclicpolygon(
sides = 3 + i,
circle_r = circle_r,
corner_r = corner_r
)
);
}
for(i = [0:2]) {
translate([i * circle_r * 2, -circle_r * 2, 0])
polygon(
shape_cyclicpolygon(
sides = 4 + i,
circle_r = circle_r ,
corner_r = corner_r
)
);
}
```

```
include <shape_cyclicpolygon.scad>;
include <rotate_p.scad>;
include <cross_sections.scad>;
include <polysections.scad>;
include <ring_extrude.scad>;
shape_pts = shape_cyclicpolygon(
sides = 5,
circle_r = 10,
corner_r = 3
);
ring_extrude(shape_pts, radius = 20, angle = 180, twist = 90);
```