dotSCAD/docs/lib-cylinder_spiral.md

cylinder_spiral

Get all points on the path of a spiral around a cylinder. Its $fa, $fs and $fn parameters are consistent with the cylinder module. It depends on the circle_path module so you have to include circle_path.scad.

Parameters

• radius : The radius of the cylinder.
• levels : The level count is performed every 360 degrees.
• level_dist : The distance between two vertial points.
• vt_dir : "CT_CLK" for counterclockwise. "CLK" for clockwise. The default value is "CT_CLK".
• rt_dir : "SPI_DOWN" for spiraling down. "SPI_UP" for spiraling up. The default value is "SPI_DOWN".
• $fa, $fs, $fn : Check the cylinder module for more details.

Examples

include <circle_path.scad>;
include <cylinder_spiral.scad>;
include <hull_polyline3d.scad>;

$fn = 12;

points = cylinder_spiral(
    radius = 40, 
    levels = 10, 
    level_dist = 10, 
    vt_dir = "SPI_UP", 
    rt_dir = "CLK"
);

for(p = points) {
    translate(p) sphere(5);
}

hull_polyline3d(points, 2);