URGENT: SDK failing to see UV coordinates

[fernando.cacciola]

Hi,

Please see attached .fbx

The artist added UV islands, and I can see them if I open the .fbx in 3D Coat

I need to convert the fbx into a proprietary format, and I use the FBX SDK for that.

However, when I get

  FbxGeometryElementUV* leUV = aMesh->GetElementUV(0);

leUV->GetMappingMode()

is

FbxGeometryElement::eByPolygonVertex:

but

aMesh->GetTextureUVIndex(i, j);

returns -1 for all vertices.

I can see that if I use ImportScene (from the SDK):

    Polygons
        Polygon 0
            Coordinates: -8187.017578, 9150.000000, -4962.866211
            Texture UV: 0.000000, 0.000000
            Normal: 0.000000, -1.000000, -0.000000
            Coordinates: -8859.222656, 9150.000000, -3890.286133
            Texture UV: 0.000000, 0.000000
            Normal: 0.000000, -1.000000, -0.000000
            Coordinates: -9494.500977, 9150.000000, -5544.650391
            Texture UV: 0.000000, 0.000000
            Normal: 0.000000, -1.000000, -0.000000

And the same for all polygons.

ANd there is nothing else in the output from ImportScene that shows the UV map.

How can I get to it?

TIA

[samsonite151 · Accepted solution]

Polygons can have more than one UV layer.  Your UVs are on the 2nd UV layer, not the first one.

The first layer is all zero.

[fernando.cacciola]

Ah... OK
I'll look into that.
Thank you