On 11/27/2020 2:00 PM, nop head wrote:
If you show the edges, then if there is an actual vertex where edges
meet then it is a vertex of a primitive. So in that case only the
point in the middle.
image.png
The other six in the cut faces have no edges, so are not vertices in
that sense. I agree they are not calculated.
I suspected that we were using different meanings for "vertex". I meant
"any corner of the resulting object where three (or more?) edges meet",
and in particular the convex ones. In this diagram, I was specifically
looking at the three corners closest to the camera, at [5,0,5], [0,5,5],
and [5,5,0].
Or this:
intersection() {
cube([10,5,5], center=true);
#cube([5,10,10], center=true);
}
where the result is an obvious-looking cube, but where the vertices of
that cube do not match the vertices of either of the input cubes.
On 11/27/2020 2:00 PM, nop head wrote:
> If you show the edges, then if there is an actual vertex where edges
> meet then it is a vertex of a primitive. So in that case only the
> point in the middle.
>
> image.png
>
> The other six in the cut faces have no edges, so are not vertices in
> that sense. I agree they are not calculated.
I suspected that we were using different meanings for "vertex". I meant
"any corner of the resulting object where three (or more?) edges meet",
and in particular the convex ones. In this diagram, I was specifically
looking at the three corners closest to the camera, at [5,0,5], [0,5,5],
and [5,5,0].
Or this:
intersection() {
cube([10,5,5], center=true);
#cube([5,10,10], center=true);
}
where the result is an obvious-looking cube, but where the vertices of
that cube do not match the vertices of either of the input cubes.
