seth_ro18 Posted December 31, 2010 Share Posted December 31, 2010 Hi, in the Group Geometry node, I am selecting a group of edges with the "Edge Depth" option in the Edges tab. (Given a point group, it selects all edges of the prims that are adjacent to the points in that point group.) I would like to invert the edge selection (not the prim or point group) then delete all prims adjacent to the edges in that inverted selection. How can I achieve this? The group node is only outputting point or prim selections, but I want the edges. Thanks! Quote Link to comment Share on other sites More sharing options...
Macha Posted January 1, 2011 Share Posted January 1, 2011 (edited) Try this Seth! (doesn't look like edge selection in this image, I don't know why, it's edge depth. In any case, it works with edge angle as well) inverted.hipnc Edited January 1, 2011 by Macha Quote Link to comment Share on other sites More sharing options...
seth_ro18 Posted January 1, 2011 Author Share Posted January 1, 2011 Thanks, what you have is close, but I don't want any overlapping green edges between the selection and its inverse. Something like the attached images. I think the difficulty is that the Group node is still doing Point or Prim selection, and not edge selection, so it does not know how to get the exact inverse of edges, which is exactly what I need. Is that even possible? Happy New Year! Quote Link to comment Share on other sites More sharing options...
Macha Posted January 1, 2011 Share Posted January 1, 2011 (edited) In this particular case you can achieve that by changing the Edge Depth parameter so that they differ by 1 for each of the two nodes. Edited January 1, 2011 by Macha Quote Link to comment Share on other sites More sharing options...
seth_ro18 Posted January 2, 2011 Author Share Posted January 2, 2011 It looks like the two edge groups still share boundary edges, which unfortunately will not work for my case. I will try to set up a more specific example of my problem and get back. I really appreciate you looking into this! Quote Link to comment Share on other sites More sharing options...
anim Posted January 2, 2011 Share Posted January 2, 2011 if you want to use that group to delete primitives, then convert it to primitive group first in edit/convert tab of group SOP, there is an option to include only primitives with all points selected or not depending on your needs Quote Link to comment Share on other sites More sharing options...
seth_ro18 Posted January 4, 2011 Author Share Posted January 4, 2011 In the case of tetrahedralizing scattered points, I'm still unable to get the right trickery to select the inverted edges. Here's an attached example case. getInverseEdgeSelectionOfTetrahedralizedPoints.hipnc Quote Link to comment Share on other sites More sharing options...
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