stephenl Posted June 16, 2012 Share Posted June 16, 2012 Hey guys been awhile since I used Houdini, how can I cut polgygons with polgyon lines? I have a series of straight lines that I want to divide a box from (preferably only one face of the box that faces directly at them) Quote Link to comment Share on other sites More sharing options...
gaurav Posted June 16, 2012 Share Posted June 16, 2012 Hey guys been awhile since I used Houdini, how can I cut polgygons with polgyon lines? I have a series of straight lines that I want to divide a box from (preferably only one face of the box that faces directly at them) May be ray using min distance and a curvesect is what you want to try. Quote Link to comment Share on other sites More sharing options...
edward Posted June 16, 2012 Share Posted June 16, 2012 If you have a bunch of straight lines, then why not use the Clip SOP? Quote Link to comment Share on other sites More sharing options...
vi_rus Posted June 17, 2012 Share Posted June 17, 2012 (edited) Is it what you're looking for? Edited June 17, 2012 by vi_rus 1 1 Quote Link to comment Share on other sites More sharing options...
zarti Posted June 17, 2012 Share Posted June 17, 2012 interesting .. where is otl 's link ? 1 1 Quote Link to comment Share on other sites More sharing options...
vi_rus Posted June 18, 2012 Share Posted June 18, 2012 I didn't share this tool. But I used PolySplit node so you can repeat this pretty easy. 1 1 Quote Link to comment Share on other sites More sharing options...
Pancho Posted November 16, 2015 Share Posted November 16, 2015 Did anybody succeed in re-building this? I guess somehow the curve positions get transferred into the split locations which seem to be in another context. Seems that it is made up by the primitive number, edge number and a divider. No idea how to convert the curve coordinates into this. Anybody an idea? Afterwards I would disconnect the edges across the split to separate the polygons. Could anybody help me out? P.S.: Could this also work with polygons with more than four edges? Quote Link to comment Share on other sites More sharing options...
mestela Posted November 16, 2015 Share Posted November 16, 2015 (edited) Had a play, got something that sorta works. Reading the help page for polysplit, noticed it accepts a few different ways to define the cuts, including prim+uv, which is easy to get with vex and xyzdist. One wrangle takes each point on the curve, uses xyzdist to get closest prim and uv of the target mesh. Second wrangle collects all the hitpoints and stores them in a single detail string, in a format polysplit expects. Polysplit uses details() expression to read that string into itself Groups pre/post split to isolate the new points, do things if required. Bit glitchy, that vimeo one is obviously doing some clever things under the hood, but I'm guessing the core of how to drive the polysplit procedurally is something like this. polysplit_procedural.hip Edited November 16, 2015 by mestela 2 1 Quote Link to comment Share on other sites More sharing options...
anim Posted November 16, 2015 Share Posted November 16, 2015 as well look at this old thread http://forums.odforce.net/topic/19385-cut-mesh-with-curve/?p=116550 Quote Link to comment Share on other sites More sharing options...
onionmarktwo Posted October 12, 2018 Share Posted October 12, 2018 (edited) He perhaps sells it now. https://www.orbolt.com/asset/vosiloB_::poly_curve_split Edited October 12, 2018 by onionmarktwo Quote Link to comment Share on other sites More sharing options...
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