SUBSCRIBE The SideFX mailing list is a great place to make contact with Houdini users. To subscribe, send us an email with no subject and the word subscribe in the body.
Sunday, 24 January 2010 Sun, 24 Jan '10
I'm actually looking for the edges. I'm writing a convex hull SOP. After I delete the polys that my current point can see, I need to make the triangles from the horizon edges back to my current point. I'm using a loop through all the edges of all the polys now and testing how many faces share the edge. If it's only 1, it's a boundary. But that is very slow. Dave On Sat, Jan 23, 2010 at 5:34 PM, Sebastian H. Schmidt < sebastian.h.schmidt at googlemail.com> wrote:
Hi Dave, do you want the edges or do you want basicaly the result of a divide sop does when you tick remove shared edges ? if you need the divide-sop thingy you can do this here: GU_Detail *myFillGDP = new GU_Detail(mygdp) GQ_Detail *myFillGQP = new GQ_Detail(myFillGDP); myFillGQP->boundary() you might have to reverse the normals with myFillGQP->reversePolys() but than you can merge it back together and do a fuse with a function called (fast)consolidatePoints if you realy need the edges, ... sorry havent used that yet ;) cheers Seb On Sun, Jan 24, 2010 at 12:55 AM, David Johnson <daveinengland at gmail.com >wrote: > Can anyone explain how to use the GEO_Closure class? > > I'm trying to find an ordered list of the edges of the polygons that are at > the border of some geometry. Like if you take a polygon sphere and delete > one of the polygons, I'd like to be able to find the edges of the hole that > is left. How can I do this? I'm trying to do it in the hdk, using 10.0.430 > > Would the GEO_Closure be able to help with this? Or can anyone else explain > how to do this in an efficient manner? > > I also sent this to support, but just in case someone is trolling the > mailing list this weekend and has an idea, I'd appreciate some info. > > Dave > _______________________________________________ > Sidefx-houdini-list mailing list > Sidefx-houdini-list at sidefx.com > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list > _______________________________________________ Sidefx-houdini-list mailing list Sidefx-houdini-list at sidefx.com https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list