1
$\begingroup$

I want to align vertices along the z-axis to be in line with another vertex. I know about S-Z-0 and pivoting around the active point, which aligns the vertices but deforms the edges these vertices are currently on. Like when pressing GG, the vertices slide along their edges, but I also want to align them to be at the same Z position as some other vertex.

enter image description here

enter image description here

The first image is the object, and the second is the side view. I want to align the highlighted vertices with the row below (same Z value), but I want the selected vertices to slide along their edges.

I could align the vertices by sight using GG, but is there a more precise way of snapping the vertices into place?

Thanks..

$\endgroup$
1
$\begingroup$

There isn't a simple way. You can move the vertices on the z-axis and use snapping to align them to the other verts, unfortunately snapping does not work while using edge slide.

To get the result you are after -

  • Select the four corners of the part you want to align to
  • Press ⇧ ShiftDESC which will duplicate the vertices and leave them in the same location.
  • Press F to make a face from these vertices
  • Scale S this face so that it is larger than the outer edges
  • Choose Mesh->Faces->Intersect (Boolean)
  • Now select your top vertices and edge slide GG, you can move them right down - against the new vertices that are cut in the edges in line with the inner section.
  • Now select all A then w->remove doubles,
  • Select and delete the extra bits left behind. I got an extra 2 faces under the section that is now flat, I deleted the two extra edges and dissolved the two vertices to end up with the desired mesh.

example editing

$\endgroup$
  • $\begingroup$ Hi, thanks for response - I was experimenting with this and also decided to use the boolean intersect method, however, I used the entire outer edge of the part that I wanted to align to and basically did what you suggested, but I ended up with lots of extra edges... I think your way leaves far less carnage behind. $\endgroup$ – Michael May 24 '16 at 10:30
  • $\begingroup$ There is an intersect boolean and intersect knife, the knife version leaves the original outer vertices as well as another face under the centre piece, that's why I chose the boolean version. $\endgroup$ – sambler May 24 '16 at 10:48
0
$\begingroup$

Temporary use a mirror modifier :

  • place the 3D cursor on some point of the "row below" (select a vertice, shift+S and cursor to selected)
  • in edit mode set the object's center to the 3D cursor ("set origin" in the tools panel)
  • add a mirror modifier. Set it in Z and check "clipping"
  • move the vertices you need to align (the way you want) along the Z axis
  • remove the mirror modifier
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.