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Update hull to support new tagging method. Change hulling to conv_hull

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Adrian Mariano
2022-05-16 18:15:08 -04:00
parent 33d9ca4352
commit 458acdf803
2 changed files with 135 additions and 59 deletions
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tutorials/Attachments.md
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@@ -402,11 +402,11 @@ cylinder(h=100, d=100, center=true)
## Tagged Operations
BOSL2 introduces the concept of tags. Tags are names that can be given to attachables, so that
you can refer to them when performing `diff()`, `intersect()`, and `hulling()` operations.
you can refer to them when performing `diff()`, `intersect()`, and `conv_hull()` operations.
### `diff(neg, <keep>)`
### `diff(remove, <keep>)`
The `diff()` operator is used to difference away all shapes marked with the tag(s) given to
`neg=`, from the other shapes.
`remove=`, from the other shapes.
For example, to difference away a child cylinder from the middle of a parent cube, you can
do this:
@@ -526,13 +526,14 @@ cube(100, center=true) {
}
```
### `hulling(a)`
You can use the `hulling()` module to hull shapes marked with a given tag together, before
unioning the result with every other shape.
### `conv_hull(keep)`
You can use the `conv_hull()` module to hull shapes together the
shapes not marked with the keep tags, before unioning the keep shapes
into the final result.
```openscad-3D
include <BOSL2/std.scad>
hulling("hull")
conv_hull("pole")
cube(50, center=true, $tag="hull") {
cyl(h=100, d=20);
xcyl(h=100, d=20, $tag="pole");