The Convex Hull Function in Blender - What is this actually used for?

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  • Опубликовано: 30 янв 2025

Комментарии • 42

  • @nkr1159
    @nkr1159 Месяц назад +1

    Brilliant :) I've been using Blender for over 10 years and never knew what 'Convex hull' does. Very useful, thank you!

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      😄 Great to be able to impart some knowledge to a Blender veteran!

  • @ThecrystalwizardCoUk
    @ThecrystalwizardCoUk Месяц назад +5

    Just what I've been looking for! I've been modelling Tanks, and this will make it easier to make the tracks over wheels!

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      You're going to love next weeks video 😉

  • @AnthonyHortin
    @AnthonyHortin Месяц назад +3

    I can see how this would be useful for making some really interesting shapes. Thanks for showing this.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      My pleasure Anthony. You can have a lot of fun with this, especially when creating sub-shapes that will be joined together.

  • @norm_olsen
    @norm_olsen Месяц назад

    Thanks for sharing! Interesting use of convex hull! This can really make short work of machine belts, rubber bands, etc... Side note: regarding the Old Modifier Menu, I was today years old when I discovered that I can simply hold Ctrl and Right click, which brings up the entire radial modifier menu overlayed where the mouse cursor is in the 3d viewport! I'll be accessing modifiers like this from now on! At first, I thought this might be because of the 3d Viewport Pie Menus add-on I have installed, but this is not the case apparently!

  • @darrennew8211
    @darrennew8211 Месяц назад

    I bet I've gotten bitten by the stretched-cylinder problem before. Great advice!
    And when you're doing rigid body simulation, the "convex hull" collision calculations are the default, which is why the orange bounces off the top of the bowl. Change that setting. :-)
    The convex hull is mathematically "join every vert to every other vert" then "delete all the edges on the inside." :-) It's called a convex hull because it's the smallest shape that has only convex angles that holds all the verts.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      @darrennew8211 Oh really interesting on the reason for the name 👍🏻 Thanks so much.

  • @DogsatrVIII
    @DogsatrVIII Месяц назад

    Great tutorial as always! I can see this function being very useful in my projects.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      @DogsatrVIII 😁 Great. Glad it's going to be helpful 👍🏻

  • @dueddel
    @dueddel Месяц назад +2

    Didn't know about the convex hull feature. Seems being pretty useful indeed. Thanks for sharing! 😘👍
    3:50 By the way, the result looks a bit like the easiest way to model a duck's foot. 🦆

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +2

      That's a good idea. Could be a good starting point for that for sure.

  • @sameeruddin
    @sameeruddin Месяц назад +1

    Superb tut once again ..and great ad plug for the next viedeo ! :)

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      @@sameeruddin Haha. Got to get that hype started 😉

  • @KimHarderFog
    @KimHarderFog Месяц назад +1

    Awesome tool - thanks!

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      Cheers 😁 Thanks for commenting, it's really appreciated

  • @n3onkn1ght
    @n3onkn1ght Месяц назад

    Convex hulls are for rigid body collisions. There are some cool tricks you can do with them (like creating proxies for better viewport performance), but the main reason they exist is for physics simulations/exporting to game engines.
    Also, the free PDT addon (which came with Blender, prior to 4.2) is a CAD tool that can compute tangents for you.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      @n3onkn1ght That's interesting to know but regardless of what they are aimed for as a modeller for 3D printing there are a number of other uses too 😉

    • @n3onkn1ght
      @n3onkn1ght Месяц назад

      @@ArtisansofVaul Sure, but your video is titled "What is this actually used for?" as if it's some mysterious thing that has no apparent purpose. You discussed some incidental time-saving tricks you discovered, but not what it's actually used for (physics colliders).

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      @@n3onkn1ght Thats a fair point 👍 A more accurate title would have been "What does it actually do"

  • @level10gnollwarlock
    @level10gnollwarlock Месяц назад

    it's also useful to use on game assets to quickly create custom collission that needs to be convex.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      @@level10gnollwarlock 👍🏻👌🏼Thanks. I never really considered it from a game PoV. Maybe I should change the thumbnail title 😅

  • @lordofhyphens
    @lordofhyphens Месяц назад +2

    Instead of scaling, why not just let the solidify modifier handle the overlap? Just set the factor to -0.95 and the vertices will end up inside.

  • @Clases3d
    @Clases3d Месяц назад +1

    very interesting and useful, I envision wis used for wraping objects y plastic or something like that

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      @Clases3d totally. Add a bit of sculpting to finish it off and you're great.

  • @k_DEDb07
    @k_DEDb07 Месяц назад +1

    so cool cheers

  • @robert8794
    @robert8794 Месяц назад

    Thanks for sharing, didn’t know this existed. Were you able to save the trackify geo nodes for future use in other projects? I’ve been trying to figure out if that’s even possible.

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад +1

      @robert8794 Oh yeah its totally savable. It's much easier in Blender 4. I have a video that mentions how to do it here: ruclips.net/video/Byp1dC0dRPo/видео.html

  • @felixxcatus
    @felixxcatus Месяц назад

    gee, I had no idea this function even existed

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      I think a lot of people are unaware. It's one of the reasons it seemed like a fun video to cover 😁

  • @LOBACHCHATGPT666
    @LOBACHCHATGPT666 Месяц назад

    Hello,artisan.
    Your tutorials helped me monstruosly a lot.
    Can you make a tutor about how to create grass and tufts like on pre-sculpted gw models?

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      @@LOBACHCHATGPT666 That sounds like an interesting one. For 3D printing?
      Would you mind removing the swearing from your comment (I try to keep everything child friendly)? Thanks.

    • @LOBACHCHATGPT666
      @LOBACHCHATGPT666 Месяц назад +1

      @@ArtisansofVaul ok

    • @LOBACHCHATGPT666
      @LOBACHCHATGPT666 Месяц назад +1

      @@ArtisansofVaul yeah, for 3d printing.
      Also i've noticed that all your edges are quite smooth. How to achieve that effect?

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      @@LOBACHCHATGPT666 Do you mean the colouring?

    • @LOBACHCHATGPT666
      @LOBACHCHATGPT666 Месяц назад

      @@ArtisansofVaulI've said that all edges on your 3d object are quite pronounced.
      how to achieve thar effwct?(also they are lighter than faces)

  • @LeelooBastet
    @LeelooBastet Месяц назад

    Hello
    Q doesnt open any menu for me..., only Quick favorites with One option: select (lol ^^)

    • @ArtisansofVaul
      @ArtisansofVaul  Месяц назад

      Hi there. As it says in the video that is using Hard Ops. It's an addon that has LOADS of awesome features to make working in Blender easier and adds some functions that are a total pain otherwise.
      You can see the addon here: blendermarket.com/products/hardopsofficial/?ref=834
      And I have a playlist on it here: ruclips.net/p/PLnqmLZKRm5CbwbAbNabT1z4SrJiiWhbSd&si=HkaZUF-Sjmq_C66g