dotSCAD/docs/lib3x-bezier_smooth.md

bezier_smooth

Given a path, the bezier_smooth function uses bazier curves to smooth all corners. You can use it to create smooth lines or rounded shapes.

Parameters

• path_pts : A list of points represent the path.
• round_d : Used to create the other two control points at the corner.
• t_step : The distance between two points of the Bézier path at the corner. It defaults to 0.1.
• closed : It defaults to false. If you have a closed path, set it to true.
• angle_threshold : Default to 0. If the angle between two line segments is bigger than angle_threshold, smooth those two segments. Since: 3.0

Examples

use <hull_polyline3d.scad>;
use <bezier_smooth.scad>;

width = 2;
round_d = 15;

path_pts = [
	[0, 0, 0],
	[40, 60, 10],
	[-50, 90, 30],
	[-10, -10, 50]
];

hull_polyline3d(
	path_pts, width
);

smoothed_path_pts = bezier_smooth(path_pts, round_d);

color("red") translate([30, 0, 0]) hull_polyline3d(
	smoothed_path_pts, width
);

use <bezier_smooth.scad>;

round_d = 10;

path_pts = [
	[0, 0],
	[40, 0],
	[0, 60]
];

polygon(path_pts);

smoothed_path_pts = bezier_smooth(path_pts, round_d, closed = true);

translate([50, 0, 0]) polygon(smoothed_path_pts);