Kris, By any chance does this get the right loops?
xsi = Application obj = xsi.Selection(0) faces = obj.ActivePrimitive.Geometry.Facets edges = [ face.NeighborEdges()[1].Index for face in faces ] xsi.SelectGeometryComponents( "%s.edge%s" % (obj.FullName, edges) ) (Also try changing the 1 for a 0.) On Sat, Oct 13, 2012 at 12:30 AM, Matt Lind <[email protected]>wrote: > Using tools only available out of the box, sounds like you should select > fewer edge loops, extract linear curves from the selected edges, then use > the Curve fitting/clean/resample tools to make smooth curves which can be > lofted into your desired tube. But that’s assuming you want to recreate > the tube you’re extracting from.**** > > ** ** > > If your tube is truly a tube (ie: symmetrical along it’s length or width), > you could just extract a single cross section and two rails in the > perpendicular direction and do a birail extrusion (extrusion - 2 > profiles). Without seeing a picture, it sounds like you’re doing more work > than necessary to get the result.**** > > ** ** > > To eliminate the middle man:**** > > ** ** > > A simple implementation via script would be to select all the vertices of > one curve/ring as an edge loop. Your code would start at a selected vertex > in the loop and check the neighbor vertices to see which one isn’t > selected, then walk along the mesh along the unselected edge recording > visited vertex IDs and positions until the end is found (end of mesh, or > revisit a previously visited vertex). At that point, draw your curve using > Model.AddNURBSCurveList(). Rinse, repeat for each vertex in the edge loop. > **** > > ** ** > > Matt**** > > ** ** > > ** ** > > ** ** > > ** ** > > ** ** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Kris Rivel > *Sent:* Friday, October 12, 2012 9:09 PM > > *To:* [email protected] > *Subject:* Re: select edges on mesh in one direction**** > > ** ** > > Sorry for the confusion. I have very dense mesh...kind of like a long > twisty tube. I want to select just the edges traveling either along its > vertical axis, or just the ones perpendicular to that...the rings making up > the tube. I was manually selecting edge loops, pulling a big curve from > that, using an addon to pull the subcurves, then a script to put a new thin > tube along each curve...but now I'm tripling the amount of original curves > and wondering if there's a better way to generate this kind of wire mesh. > > Kris**** > > On Fri, Oct 12, 2012 at 10:00 PM, Matt Lind <[email protected]> > wrote:**** > > If the goal is to simply select a line of edges, then the range selection > tool can do that. You pick an edge, press ALT, then pick another edge and > Softimage selects the shortest path between the two edges. If the edges > are on the same line, then it’s a clean result, otherwise a lot of zig-zags > will result, which is what I think Kris wants to avoid.**** > > **** > > To answer Kris’s other question, yes a curve can be extracted from a mesh > via Model > [Create] Curve > Extract from Edges. From ICE or script you’ll > have to code it yourself by traversing the edge and collecting the vertex > IDs and positions in the order you want the curve drawn.**** > > **** > > Matt**** > > **** > > **** > > **** > > **** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Andreas Bystrom > *Sent:* Friday, October 12, 2012 6:53 PM > *To:* [email protected] > *Subject:* Re: select edges on mesh in one direction**** > > **** > > depends how the mesh is constructed, but sometimes you can simply first do > a "select edgering" and with that result selected do a "select edgeloop" > command. > > **** > > On Sat, Oct 13, 2012 at 2:47 PM, Matt Lind <[email protected]> > wrote:**** > > Define one direction. As in, what is your point of reference for > defining the direction?**** > > **** > > **** > > Matt**** > > **** > > **** > > **** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Kris Rivel > *Sent:* Friday, October 12, 2012 6:45 PM > *To:* Softimage List > *Subject:* select edges on mesh in one direction**** > > **** > > Is it possible to select edges along a mesh traveling in direction only? > I'm trying to extract hundreds of edges along a mesh but only want the ones > running across the surface in one direction. Any scripts or tools that do > this? Possible to generate curves or strands in direction on a mesh via > ICE or something? > > Kris**** > > > > > -- > Andreas Byström > Lighting TD - Weta Digital**** > > ** ** >
