Thanks Leo, much appreciated :) RCTools worked perfectly! For those interested: I used the custom filter ppg and used the orientation vector section where I could select -1 for the Y axis and then added to my selection with an appropriate value! Cheers, Jon
On Fri, Jul 4, 2014 at 2:48 PM, Leo Quensel <[email protected]> wrote: > If I remember correctly, RCTools has an option for this in the selection > filters. > > http://rray.de/xsi/rctools/ > > *Gesendet:* Freitag, 04. Juli 2014 um 15:27 Uhr > *Von:* "Jon Hunt" <[email protected]> > *An:* [email protected] > *Betreff:* Selection of polygons on the –y normal > Hi All > > I was wondering whether anyone has any suggestions: > > I am making a snow layer to my environment. I am generating a mesh from > the below workflow using ICE > > https://vimeo.com/22746730 > > When I generate the mesh from the point cloud using the polygonizer tool, > the mesh has a thickness to it. Essentially I don’t want this. I am left > with a lot of polys that are not needed on the underside of the mesh and it > shall be a very length process to optimize this mesh by manually selecting > polys and deleting. I have tried growing a selection out but this doesn’t > always work as sometimes when I generate snow that is supposed to look like > its melting, I have holes in the thickness. > > Does anyone have a suggestion of selecting polys that are on the underside > of my meshes. > > Thanks in advance, > > Jon >

