RE: .obj import UV point order

["kim aldis" <xsi(at)kim-aldis.co.uk>]

Oops.

 

From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of guillaume laforge
Sent: 30 January 2008 13:05
To: XSI(at)Softimage.COM
Subject: Re: .obj import UV point order

 

>This isn't my code, it came from someone at Softimage. To my shame I can't
>remember who it was. Apologies to them... Sub lmFixUVs_Execute( InputSelection )

lmFixUVs means "La Maison" FixUVs and not "Softimage" FixUVs :-).

1/2

Guillaume

On Jan 30, 2008 11:03 AM, kim aldis <xsi(at)kim-aldis.co.uk> wrote:

This isn't my code, it came from someone at Softimage. To my shame I can't
remember who it was. Apologies to them.


mFixUVs_Execute selection(0)

Sub lmFixUVs_Execute( InputSelection )


   ' ---[ Retrieve Object & Parameters
]-------------------------------------
   Set oClsProp   = InputSelection
   Set oCluster   = oClsProp.Parent
   Set oX3DObject = oCluster.Parent.Parent.Parent
   aIndices       = oCluster.Elements.Array
   aElements      = oClsProp.Elements.Array
   Dim   aFixed()
   Redim aFixed(2,oClsProp.Elements.Count-1)
   '
   iUBound = oX3DObject.ActivePrimitive.Geometry.Samples.Count - 1
   Dim   aSamplesIdx()
   Redim aSamplesIdx(iUBound)
   Set oFacets = oX3DObject.ActivePrimitive.Geometry.Facets
   id = 0
   For Each oFacet In oFacets
       For Each oSample In oFacet.Samples
           aSamplesIdx(id) = oSample.Index
           id = id + 1
       Next
   Next
   '
   For i = LBound(aElements,2) To UBound(aElements,2)
       idx = aSamplesIdx(aIndices(i))
       aFixed(0,idx) = aElements(0,i)
       aFixed(1,idx) = aElements(1,i)
   Next
   '
    oClsProp.Elements.Array = aFixed

End Sub

> -----Original Message-----
> From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On

> Behalf Of André Adam
> Sent: 30 January 2008 08:34
> To: XSI(at)Softimage.COM
> Subject: Re: .obj import UV point order
>

> Though Kim's approach is a bit smarter, I've posted a fix to this a
> while back on http://www.mindthink.de called "aa_CopyUVsPerFace".
> Basically it copies the texture coordinates from a selected source mesh
> onto a selected target mesh, dealing with messed up sample indices.
>
> -André
>
>
> Mathieu Leclaire wrote:
> >
> > It seems that when importing a .obj file for a large and complex
> mesh,
> > XSI changes the order of some of the UV points. For example, if we
> > export an .obj to be used in Zbrush, UVLayout or Unfold 3D for
> > example, when we reimport the obj and we want to copy the UVs to the
> > original mesh, it won't work. Sure, we try and fix it using Gator but
> > sometimes, the results are not always liable. How do you guys deal
> > with such problem?
> >
> > Mathieu Leclaire
> >
> > R&D Programmer
> >
> > Hybride Technologies
> >
> > "Yesterday is history, tomorrow is a mystery, today is a gift and
> that
> > is why it's called the present"
> >
>
> ---
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Guillaume Laforge