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Fixed reference to gears.scad. Fixed hull3d() for small vertex counts.

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This commit is contained in:
Garth Minette 2021-05-05 12:29:39 -07:00
parent 5de7b46519
commit e75133d3f4
3 changed files with 10 additions and 6 deletions
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2
examples/BOSL2logo.scad
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@ -1,5 +1,5 @@
include <BOSL2/std.scad> include <BOSL2/std.scad>
include <BOSL2/involute_gears.scad> include <BOSL2/gears.scad>
include <BOSL2/beziers.scad> include <BOSL2/beziers.scad>
include <BOSL2/screws.scad> include <BOSL2/screws.scad>
include <BOSL2/cubetruss.scad> include <BOSL2/cubetruss.scad>

2
hull.scad
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@ -168,7 +168,7 @@ function hull3d_faces(points) =
b = tri[1], b = tri[1],
c = tri[2], c = tri[2],
plane = plane3pt_indexed(points, a, b, c), plane = plane3pt_indexed(points, a, b, c),
d = _find_first_noncoplanar(plane, points, 3) d = _find_first_noncoplanar(plane, points, 0)
) )
d == len(points) d == len(points)
? /* all coplanar*/ ? /* all coplanar*/

12
tutorials/Attachments.md
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@ -390,7 +390,7 @@ the shape to make attachable, and the second will be `children()`, literally.
To make a cuboidal or prismoidal shape attachable, you use the `size`, `size2`, and `offset` To make a cuboidal or prismoidal shape attachable, you use the `size`, `size2`, and `offset`
arguments of `attachable()`. arguments of `attachable()`.
In the most basic form, where the shape in fully cuboid, with top and bottom of the same size, In the most basic form, where the shape is fully cuboid, with top and bottom of the same size,
and directly over one another, you can just use `size=`. and directly over one another, you can just use `size=`.
```openscad ```openscad
@ -407,7 +407,8 @@ cubic_barbell(100) show_anchors(30);
``` ```
When the shape is prismoidal, where the top is a different size from the bottom, you can use When the shape is prismoidal, where the top is a different size from the bottom, you can use
the `size2=` argument as well. the `size2=` argument as well. While `size=` takes all three axes sizes, the `size2=` argument
only takes the [X,Y] sizes of the top of the shape.
```openscad ```openscad
module prismoidal(size=[100,100,100], scale=0.5, anchor=CENTER, spin=0, orient=UP) { module prismoidal(size=[100,100,100], scale=0.5, anchor=CENTER, spin=0, orient=UP) {
@ -427,7 +428,8 @@ prismoidal([100,60,30], scale=0.5) show_anchors(20);
``` ```
When the top of the prismoid can be shifted away from directly above the bottom, you can use When the top of the prismoid can be shifted away from directly above the bottom, you can use
the `shift=` argument. the `shift=` argument. The `shift=` argument takes an [X,Y] vector of the offset of the center
of the top from the XY center of the bottom of the shape.
```openscad ```openscad
module prismoidal(size=[100,100,100], scale=0.5, shift=[0,0], anchor=CENTER, spin=0, orient=UP) { module prismoidal(size=[100,100,100], scale=0.5, shift=[0,0], anchor=CENTER, spin=0, orient=UP) {
@ -446,7 +448,9 @@ module prismoidal(size=[100,100,100], scale=0.5, shift=[0,0], anchor=CENTER, spi
prismoidal([100,60,30], scale=0.5, shift=[-30,20]) show_anchors(20); prismoidal([100,60,30], scale=0.5, shift=[-30,20]) show_anchors(20);
``` ```
In the case that the prismoid is not oriented vertically, you can use the `axis=` argument. In the case that the prismoid is not oriented vertically, (ie, where the `shift=` or `size2=`
arguments should refer to a plane other than XY) you can use the `axis=` argument. This lets
you make prismoids naturally oriented forwards/backwards or sideways.
```openscad ```openscad
module yprismoidal( module yprismoidal(