MrHoo Posted October 18, 2017 Share Posted October 18, 2017 (edited) Hi, I can't get my brain around how to solve this problem. I've got a simple tube with to different radii (lower one is smaller), I grouped its top face and did a first extrude with an inset to get some thickness. Then I extruded downwards with some inset. I am searching for a procedural solution having the inner extrude always being parallel to the outer hull. Can somebody point me into the right direction? See attached image. Thanks & Cheers! Dominik Edited October 18, 2017 by MrHoo Quote Link to comment Share on other sites More sharing options...
konstantin magnus Posted October 18, 2017 Share Posted October 18, 2017 (edited) Polyextrude has an option "Transform extruded front", where you can define the offsets in detail. extrude.hipnc Maybe these explanations are helpful for getting the correct ratio, as well: Edited October 18, 2017 by konstantin magnus Quote Link to comment Share on other sites More sharing options...
MrHoo Posted October 18, 2017 Author Share Posted October 18, 2017 Thx Konstantin, as usual the easy way is just in front of me and I refused to take it. I made it too complicate... but anyway, thanks for the vid, I'll try to get the concepts to try to solve my way :-) Cheers! Quote Link to comment Share on other sites More sharing options...
Noobini Posted October 18, 2017 Share Posted October 18, 2017 (edited) how about this ? (ok, so it's not a formula....so I'll disqualify meself) vu_bucket.hipnc Edited October 18, 2017 by Noobini Quote Link to comment Share on other sites More sharing options...
Noobini Posted October 19, 2017 Share Posted October 19, 2017 (edited) here you are...would you call the wrangle 'formulaic' ? (surprise it took me so loooooong, it's just bloody basic trigonometry...still scratching my head why it's a plus offset instead of subtract ) aw...derrrrrrr...it's because when extruding the bucket depth....depth is negative so I forgot to stick a minus infront.....wow...that held me up awhile there....fixed now vu_bucket2.hipnc Edited October 19, 2017 by Noobini Quote Link to comment Share on other sites More sharing options...
Noobini Posted October 19, 2017 Share Posted October 19, 2017 (edited) ok....finally...here IS the formula... (ch("../tube1/rad1") - ch("../tube1/rad2")) * -ch("dist") / ch("../tube1/height") of course, it would only make sense if you dive in and see the file working... It even works when you deliberately sabotage it by extruding the bucket bottom UP !! time to kick the bucket... EDIT: you might have been wondering why I need the 0.5 at the front ? well of course I don't, I kept looking at my rough pen&paper sketch and used 0.5 diameter to get radius when really I should just use....errr...Radius, silly me, anyway, taken the 0.5 out of the formula now... vu_bucket3.hipnc Edited October 19, 2017 by Noobini 1 Quote Link to comment Share on other sites More sharing options...
MrHoo Posted October 19, 2017 Author Share Posted October 19, 2017 Thanks Noobini, (ch("../tube2/rad1") - ch("../tube2/rad2")) * (-1*ch("dist")) / 10 --- this was my first attempt - I justed missed the height (don't know why I used 10 hehe) And from there I complicated and screwed evrything haha Thx both of you !! Cheers! Quote Link to comment Share on other sites More sharing options...
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