I am very new to blender and I have a problem where I can't dissolve these two faces and I don't know why. Can someone help me ? enter image description here

Link to the blender file if anyone need it : https://mega.nz/#!BxBkVA5b!Xz0vgBDgfhW32xzLA_DX5Xp-r9dFMtxl2wbwyY0Km5U

  • 2
    $\begingroup$ please, at least next time, could you use blend-exchange.giantcowfilms.com service to upload .blend files, since it's the preferred way here? Thanks $\endgroup$ – m.ardito Feb 28 '17 at 11:05
  • 2
    $\begingroup$ I think you can't dissolve. Because dissolve will lower the geometry, and if you do it here, the wall will overlap the windows $\endgroup$ – lemon Feb 28 '17 at 11:29

A face is a polygon. A polygon is an array of vertices.

The way it is interpreted is:

  • Make a first triangular part with vertices 1, 2, 3
  • Then make another one with 2, 3, 4
  • Then 3, 4, 5
  • Etc.

This does not allow to have holes in it except if there is only 1 hole, or in some special cases for example if the holes are triangular themselves (at least, I think, this is surely a complex topology problem...).

So, my though is that you can dissolve only if there is a path of triangles "calculable" all along this polygon. And I don't think this is the case here due to the 3 square holes. Or if you dissolve, the polygon will cover/overlap the windows.

  • $\begingroup$ Alright, so right now it's the best I can achieve if I understood correctly ? $\endgroup$ – A Real Snake Feb 28 '17 at 11:53
  • $\begingroup$ I think the question is "why do you need to do that ?". And yes, you cannot lower the amount of faces here. But after a look at your file, some vertices can be removed. $\endgroup$ – lemon Feb 28 '17 at 11:54
  • $\begingroup$ Mainly for UVs, I like it when things are 100% clean, but I guess I will have to do with it. Thansk for the help ! $\endgroup$ – A Real Snake Feb 28 '17 at 12:05
  • $\begingroup$ @ARealSnake it's most likely that you won't get everything clean when having Ngon like that, UVs don't like such distortion. Go with quads or tris if low-poly and unwrap. $\endgroup$ – Mr Zak Feb 28 '17 at 12:35
  • $\begingroup$ Thanks for the info again, it will greatly help me in the future ! $\endgroup$ – A Real Snake Feb 28 '17 at 14:44

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.