Stitch Faces?

#1

Can wings3d do this below, its from mesh works it gives a good explanation, I believe in a program like 3d max it would be welding edges perhaps, as it says below I have models from a cad program, the edges of the shape have thin gaps between every edge, you cannot see it with the naked eye, but they are there, it means that i cannot edit the mesh in wings as if I do I get problems, if I say delete an edge then the model vanishes and i get a wings error, so the model needs cleaning up, I wondered if wings 3d has a way of doing this as I do not want to spend 500 usd on meshworks plus it would be nice to do it in wings 3d as its my editing prog of choice.
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from meshworks

[u]Stitch Faces[/u]

[b][/b]Some CAD systems export meshes with loosely tied faces. The edges of adjacent faces seem to coincide to the naked eye, but actually there are minute needle shaped spaces between adjacent faces. MeshWorks stitches adjacent faces of a mesh together to remove the gaps.


Original mesh (red portion denotes gap between faces)


Stitched mesh

example file here

http://www.avantivita.com/Dean/brush%20arch.zip

#2

I dont think Wings 3d has that feature: This is what I do

  1. I find the problem area.
  2. I try to delete a face or two, hopefully Wings wont crash.
  3. I then select three vertices. and connect them to make a new face or poly.
  4. This might not work and Wings might crash, but this is the only method for me.
#3

while modelling i always encounter this sort of thing.

Its no biggie, thought its only in one area of the model. Plus its never a complete hole, its just a non-planar face. Happens when im deleting loads of edges and re-desiging the topology, you will see it in my videos all the time.

If your bringing you model from other apps to work in wings, just make sure its as water tight as possible. You can bring models with holes in them, just the more holes the bigger the chance of crashing.

#4

It is not a bad editing problem, the model is made in another prog, the program has open edges on all edges, they need welding or stiching.

The model is made tight but all edges are open ( is made in a game editor, beacse the model is made to a certain scale snapping, I export it clean it up delete edges then texture uv map etc and export back in as a mesh and not a brush as was made) ,
edges are split as that is the nature of the other program, CAD programs can do that, I just want to fix that, if there is another prog that can do this that is free then great but I dont want to spend 500 usd on a shareware program with mesh works, or spend a few thousand on max to weld the edges.

I dont want these split edges it doubles the polycount, not good in games, will make UV mapping a problem, plus you cannot edit the model at all as it will crash.

#5

then you need to weld those edges before bringing it into Wings3d, if you havent got access to anything else i suggest bringing it into Blender and welding them there because i dont think wings will be able to handle it.

#6

Can it weld them all at once, as in every edge, going over each edge will take ages, it would be nice to select every edge and it welds all of them at once, so its like a couple of clicks and then export the model out.

#7

dont know, dont use it. I should think you could select all edges and vertices and hit weld with a low threshold or something but like i said dont know.

Maybe you could over there, more people use blender than wings so someone would be able to tell you pretty quickly :stuck_out_tongue:

#8

This type of task is not within wings’ remit or way of working ‘under the hood’ - therefore the 2 weld tools available (Object / Vert menus) will be of no use whatsoever.

Considering the simplicity of the shape involved and the amount of ‘tidying up’ reqd. anyway (imo) - I’d just re-make the model in wings, using the original as a ref. - no more than a few mins :slight_smile:

pp

#9

you cannot re make it wings as wings has no snap to grid, the model and others are for a game engine and has to snap to grid for a specific reason, so one cannot make it in wings with no grid snapping

#10

#11

what did you do?

#12

<< what did you do? >>

Made edges defining the arch (or half of it, anyway) hard - just so’s they were a different colour and would stand out from the main w/f - no other reason.

Selected bottom side face of the arch and Face |Extract > Z
Added additional verts to the extracted face using Edge | Cut > n

View Z, ortho, Tweak mode, re-arrange these new verts into (roughly) the correct nodal positions of the orig arch, using orig. arch geom. as a reference (same deal as using an Image Plane)

Trued up these new verts with Vert | Radial Scale > Z > 0% - rmb option (using shift to constrain to 0% and Cntrl D to repeat last command, but allowing for different axial anchor points to be used - all done using highlight ops, of course.) Obviously used the relevant verts off the original as refs.

Completed half an arch shape, connected up the verts to form new intermediate faces.

Selected all faces and Extrude Region > Z to give the arch thickness, using tab input and relevant dimension lifted off the original.

Connected all edges on top of arch, bevelled new edge sequence, slid new edges into position etc.

Selected centre faces on top of arch and Extrude region > Normal

Vector flatten ops to true up side / top - again using orig as ref.

Mirrored the lot.

Many ways of killing this partic. cat - above is only one.

A couple of relevant pages
http://www.geocities.com/paulthepuzzles/aaprofileextrude.html (re drawing shapes)

http://www.geocities.com/paulthepuzzles/aaalign.html (re using Rad. scale > 0% for aligning)

As you say, wings has no ‘snap to grid’ - but it’s easy enough to create a suitable grid - and use the Bounding Box tools - which offer vert precision (can’t get any better?)

The Move Absolute tools would also be worth more than a quick look as well (imo) - as again, they offer complete object movement facilities with vert precision.

Both Vert | Weld options also offer other (different and useful) alignment facilities.

pp

#13

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