trx Posted December 13, 2025 Share Posted December 13, 2025 Hi, I am trying to build a book generator where I can have multiple books leaning at an angle onto each other, the problem is I am not able to figure out a way to have the books touching, without using RBD or any simulation. I have tried projecting a point at the top corner while also having the pivot there, then trying to project via a ray and have it on the previous book iteration but I can't get it working. I am a beginer at Houdini so I don't know VEX and am struggling with it since I tried looking at an attribute wrangler as well. Does anybody have an idea on how I could have each book touching the previous one perpedincularii based on the top pivot? Many thanks BooksGenerator.hip Quote Link to comment Share on other sites More sharing options...
AntoineSfx Posted Friday at 03:57 PM Share Posted Friday at 03:57 PM If you're still looking for a solution, I can post something; Click the Like reaction on this message It's actually quite simple, but you have to be proficient in For loop with feedback SOP None of the distribute / align tools that ship with Houdini compute the collisions on the full geometry, AFAIK, you have to do it yourself with rays; there are a few different cases to test though, depending on how complex you want you book stack. Quote Link to comment Share on other sites More sharing options...
konstantin magnus Posted Friday at 10:38 PM Share Posted Friday at 10:38 PM (edited) The UV layout-node lines up the books. Just disable the axis alignment and pack into UDIM tiles. book_shelf.hip books_shelf_3d_od.hip Edited Saturday at 02:30 PM by konstantin magnus 3 Quote Link to comment Share on other sites More sharing options...
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