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JP Shep

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About JP Shep

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  • Name
    Joshua Petrakos
  • Location
    Toronto, Canada
  • Interests
    Animation, Visual Effects, Sports.

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  1. I thought about it but I wanted to control the switch with an expression rather than keyframe it or motion motion FX I think I figured it out though. I have 2 different lines feeding into my [switch] one with a length value of 10 and the other with a value of 0 and then I'm using a pulse expression in my [switch] node to switch between the two values every second. This is what I'm using right now. pulse($F % 24, 0, 12) Right now it's working but I may still need to tweak the values. Although I'm not sure I can get it to pulse between more than 2 values at the moment.
  2. Hey, For a side project I'm working on I'm trying to create random/periodic lighting strikes. I'm trying to get a line with animated noise on it to increase its length to a set max value, pause for a few frames, return to a length value of 0 then have it hit the max value again after holding its value again. I have multiple [lines] with different length values (with a point VOP to create the noise) feeding into a [switch] I've tried using multiple expressions like floor($F/24) and $F % 2 and a fit range. I've gotten the values to switch after 24 seconds but not switch back; and to switch back and forth but it does it every frame and it's too fast. I've also gotten the switch to count up every X seconds (i.e. 1, pause, 2, pause, 3, pause) but not count back down. Anyone have any ideas?
  3. Hello, this is my student demo reel showcasing what I've learned within 8 months of learning Houdini and I was wondering if I could get some feedback on it.
  4. Ok, thanks for replying! What I found out since I posted was that I had a bunch of constraint networks in my DOP network and each one had a glue cornel with each layer of the house (messy workflow I know, I think I know how to clean it up though) and what I noticed is that they all worked but the one constraint network with the gluecornel with the full constraint (every piece glued in one connect adjacent pieces node) wasn't doing anything. So I tried it in reverse and got rid of all the previous networks and just kept the constraint network that connected every piece and it worked. I'll try your suggestion and reply with my results but before I do, I understand everything you said except for the part about merging the centroids, what do you mean by that?
  5. Hey, I spent a while prepping and adding to a model house for a destruction project but I'm having a lot of trouble gluing everything together. I can get the components of the house to glue together no problem (e.g. the windows, the walls, the bricks etc). But what I really want to learn is how to glue each of the fractured components to eachother. What I mean is that my house just falls apart, the bricks dont stay attached to the wall, the glass windows don't stay in their frames the roof shingles dont stay on the roof. I'm really hitting a wall here (no pun intended). Can anyone lend me a hand in figuring out how to approach this? The picture is my destruction model. Each component (roof, walls, etc) has its own constraint network but they arent glued to eachother so when I sim the pieces just pop off.
  6. Hey all, I've cached out a cloth sim that's was attached to a static object but when I read it back in with a file node the geometry jumps around in some frames. In the sim in the DOP net it's fine but in the cache it jumps around. Anyone know what's happening?
  7. Well now I just feel silly. Thank you so much for responding that's exactly what I was missing, now I can continue with my project.
  8. Wow that looks fantastic, i'll have to try it out. I would still like to know what's causing my issue though. It's just a wind force and a cloth object; I don't think it should be causing this much trouble.
  9. Hello, I am trying to make the sails and flags on a pirate ship blow with the wind (that is blowing in the -Z direction). But no matter what direction I put in the velocity parameter in the wind force node, the cloth only blows in the X direction. I thought at first the issue had to do with constraints or maybe one of the cloth parameters but I've played around with almost everything and I just can't seem to figure it out. Can anyone help me figure out what's happening? boat_resized.obj boat_flags_03.hipnc
  10. I'm having issues with cloth interacting with forces in houdini 15.5.565 do you think this same bug could be causing it?
  11. Back in January I didn't know Houdini existed until I started school and ever since I've been trying to learn as much as I can. I still have a lot of work to do and there is a lot more I want to learn/try but this is all I've learned up until now.
  12. I love the colours! If the render didn't take too long you can put a short expression on the offset in your clouds to make it look like they have some movement on them.
  13. Another simple wall shatter. I posted the first one I finished but in all honesty I had a lot of strange issues with it and it just didn't look that great. This one isn't really any more complicated but it sure does look better by comparison ;D
  14. The falling geometry wasn't because of my solver. I made a stupid mistake with the geometry I was copying to the particles. It's a little hard to explain what I did by typing lol.
  15. Took me a while to get this far on this project. But I managed to somewhat recreate the derez effect from Tron: Legacy.