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dotSCAD/docs/lib3x-loft.md
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# loft
When having uniform cross sections, you can use [sweep](https://openhome.cc/eGossip/OpenSCAD/lib3x-sweep.html) 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_starburst.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_starburst(15, 12, i % 2 == 1 ? i : i - 1)) ptf_rotate([p[0], p[1], 5 * (i - 4)], i * 10)
]
];
loft(sects, slices = 3);
translate([30, 0, 0])
difference() {
loft(
[
[for(p = shape_circle(10, $fn = 3)) [p[0], p[1], 15]],
[for(p = shape_circle(15, $fn = 24)) [p[0], p[1], 0]]
],
slices = 4
);
loft(
[
[for(p = shape_circle(8, $fn = 3)) [p[0], p[1], 15.1]],
[for(p = shape_circle(13, $fn = 24)) [p[0], p[1], -0.1]]
],
slices = 4
);
}
![loft](images/lib3x-loft-1.JPG)