Edges Deliting Them Self

[jacktrust]

Hi guys here is the sceen file for you to take a look at, tray to extrude a finger on amodel the select the model and you moght get deleted edged.

thanks guys and gals
http://rapidshare.de/files/25785872/MONSTER_DAVID.rar.html (http://rapidshare.de/files/25785872/MONSTER_DAVID.rar.html)

[AnIm]

you have made some changes on your subdivided object
those are recorded to the operator stack and will apply on top of the symetrize operator and will mess up your mesh
when you change topology of your low poly cage (a "cube" object in your scene)
it will subdivide the cage, symetrize it, but it will also apply those changes

look at your operator stack of the subdivided object and delete all operators above "SymetrizePolygonOp"
I also recommend you to freeze stack on your poly cage, to speed up modeling
or work in Immed mode
AND do not apply topology operators on subdivided mesh any more
at least not in this stage of modeling

[jacktrust]

Anim thanks that fix the problem. You said (AND do not apply topology operators on subdivided mesh any more at least not in this stage of modeling) can u be more spacific, since i am falowing dvd tutorial and i am falowing what ever he does in the tutorial how come he is not getting the same problem or at least if he is he should tell us.

thanks again

[AnIm]

you have created low poly mesh and then a subdivided one
the subdivided depends on the low poly
so when you model in low-poly, the subdivided one will update itself

but if you directly edit subdivided mesh, the new operators are added on top of the
subdivide operator (which reads and subdivides topology of the low poly)
everything looks fine, but when you later continue on making changes to low poly (for example extrude),
those will reflect in subdivided mesh plus all operators added on top of subdivide operator will reapply to changed mesh and will mess it up
problem because vertex count has changed(by the extrude you applied to low poly) and the operators will apply on other points

i hope you can understand what I am trying to say :)

here is a simple example
create a sphere
select all points of the sphere
move them in X axis by some value
open explorer and look at the operator stack
you should see Geometry operator and Move component operator
think of the sphere as your subdivided mesh
the Geometry operator represents the Mesh subdivide operator you have on your subdivided mesh. It is fed by the data from low poly mesh
and finally Move component operator is a change applied on top of the Mesh subdivide operator (or Geometry operator in this case )

Now increase the U and V subdivisions parameters under Sphere-Geometry
this change represents change on low poly mesh such as extrude
see what is happening?
only some vertices are moved I think it is obvious now why

[jacktrust]

man thanks i do understand you clearly, and thanks for the mini tutorial it realy hellped.

thanks again

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