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Adrian Mariano
2024-09-27 18:31:30 -04:00
parent f0d90eed19
commit ae73c6d9cf
2 changed files with 240 additions and 87 deletions
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tutorials/Attachments.md
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@@ -223,15 +223,6 @@ include <BOSL2/std.scad>
cube([20,20,40], center=true, spin=45);
```
You can also spin around other axes, or multiple axes at once, by giving 3 angles (in degrees) to
`spin=` as a vector, like [Xang,Yang,Zang]. Similarly to `rotate()`,
the rotations apply in the order given, X-axis spin, then Y-axis, then Z-axis:
```openscad-3D
include <BOSL2/std.scad>
cube([20,20,40], center=true, spin=[10,20,30]);
```
This example shows a cylinder which has been anchored at its FRONT,
with a rotated copy in gray. The rotation is performed around the
origin, but the cylinder is off the origin, so the rotation **does**
@@ -666,13 +657,13 @@ To show all the standard cardinal anchor points, you can use the [show_anchors()
```openscad-3D;Big
include <BOSL2/std.scad>
cube(40, center=true)
cube(20, center=true)
show_anchors();
```
```openscad-3D;Big
include <BOSL2/std.scad>
cylinder(h=40, d=40, center=true)
cylinder(h=25, d=25, center=true)
show_anchors();
```
@@ -687,7 +678,7 @@ For large objects, you can again change the size of the arrows with the `s=` arg
```openscad-3D;Big
include <BOSL2/std.scad>
prismoid(150,60,100)
show_anchors(s=35);
show_anchors(s=45);
```
## Parent-Child Anchor Attachment (Double Argument Attachment)
@@ -2019,7 +2010,7 @@ override the position. If you omit the other list items then the
value drived from the standard anchor will be used. Below we override
position of the FWD anchor:
```
```openscad-3D
module cubic_barbell(s=100, anchor=CENTER, spin=0, orient=UP) {
override = [
[FWD, [[0,-s/8,0]]]
@@ -2039,7 +2030,7 @@ Note how the FWD anchor is now rooted on the cylindrical portion. If
you wanted to also change its direction and spin you could do it like
this:
```
```openscad-3D
module cubic_barbell(s=100, anchor=CENTER, spin=0, orient=UP) {
override = [
[FWD, [[0,-s/8,0], FWD+LEFT, 225]]
@@ -2062,7 +2053,8 @@ The third entry gives a spin override, whose effect is shown by the
position of the red flag on the arrow. If you want to override all of
the x=0 anchors to be on the cylinder, with their standard directions,
you can do that by supplying a list:
```
```openscad-3D
module cubic_barbell(s=100, anchor=CENTER, spin=0, orient=UP) {
override = [
for(j=[-1:1:1], k=[-1:1:1])
@@ -2086,7 +2078,7 @@ the default, or a `[position, direction, spin]` triple to override the
default. As before, you can omit values to keep their default.
Here is the same example using a function literal for the override:
```
```openscad-3D
module cubic_barbell(s=100, anchor=CENTER, spin=0, orient=UP) {
override = function (anchor)
anchor.x!=0 || anchor==CTR ? undef // Keep these