dotSCAD/docs/lib3x-paths2sections.md

paths2sections

Given a list of paths, this function will return all cross-sections described by those paths. Combined with the sweep module, you can describe a more complex model.

You paths should be indexed count-clockwisely.

Parameters

• paths : A list of paths used to describe the surface of the model.

Examples

use <paths2sections.scad>
use <polyline_join.scad>
use <sweep.scad>

paths = [
    [[5, 0, 5], [15, 10, 10], [25, 20, 5]],
    [[-5, 0, 5], [-15, 10, 10], [-25, 20, 5]],
    [[-5, 0, -5], [-15, 10, -10], [-25, 20, -5]],  
    [[5, 0, -5], [15, 10, -10], [25, 20, -5]]
];

sections = paths2sections(paths);

sweep(sections);

#for(path = paths) {
    polyline_join(path)
	    sphere(.25);
}

use <bezier_curve.scad>
use <paths2sections.scad>
use <polyline_join.scad>
use <sweep.scad>

t_step = 0.05;

paths = [
    bezier_curve(t_step, 
        [[1.25, 0, 5], [5, 20, 5], [16, 20, -2], [18, 20, 10], [30, 15, 8]]
    ),
    bezier_curve(t_step, 
        [[-1.25, 0, 5], [0, 20, 5],  [16, 22, -2], [18, 20, 10], [30, 25, 8]]
    ),
    bezier_curve(t_step, 
        [[-1.25, 0, -5], [0, 20, -5], [16, 20, 1], [18, 27, -3], [20, 27, -5]]
    ),
    bezier_curve(t_step, 
        [[1.25, 0, -5], [5, 20, -5], [16, 20, 1], [18, 17.5, -3], [20, 17.5, -5]]
    )
];


sections = paths2sections(paths);

sweep(sections);

#for(path = paths) {
    polyline_join(path)
	    sphere(.25);
}