The only way I know of doing this is by selecting the texture vertex and calling <unwrap_uvw>.getSelectedGeomVerts() to return the corresponding geometric vertex. I thought there must be a better way than this, but I haven't found one yet :/
ok although you dont need this I will post it anyway because I prepared it anyway so: here is a code snippet that will read out your texture vertex points if you have a UVWunweap modifiert attached:obj = selection[ 1 ];if (classof (modPanel.getCurrentObject()) == Unwrap_UVW) then ( local uv = selection[1].modifiers[…