dotSCAD/docs/lib3x-loft.md

loft

When having uniform cross sections, you can use sweep to create a model. The loft here is best when you have a body with multiple crosssections with different geometries.

Since: 2.3

Parameters

• sections : A list of cross-sections, The points must be count-clockwise indexes.
• slices : Defines the number of intermediate points between two sections. Default to 1.

Examples

use <shape_star.scad>
use <shape_circle.scad>
use <ptf/ptf_rotate.scad>
use <loft.scad>
	
sects = [
	for(i = 10; i >= 4; i = i - 1)
	[
		for(p = shape_star(15, 12, i % 2 == 1 ? i : i - 1)) ptf_rotate([p.x, p.y, 5 * (i - 4)], i * 10)
	]
];
loft(sects, slices = 3);

translate([30, 0, 0])
difference() {
	loft(
		[
			[for(p = shape_circle(10, $fn = 3)) [p.x, p.y, 15]],
			[for(p = shape_circle(15, $fn = 24)) [p.x, p.y, 0]]        
		],
		slices = 4
	);

	loft(
		[
			[for(p = shape_circle(8, $fn = 3)) [p.x, p.y, 15.1]],
			[for(p = shape_circle(13, $fn = 24)) [p.x, p.y, -0.1]]        
		],
		slices = 4
	);    
}