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About HopperAE

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    Andrew Hopper
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  1. Constraints rigids and vellum

    Yes, but it would not be rigid? thanks Andy
  2. Hey, I have a brain scratcher that I need help with. I have animated a jacket with vellum using cloth constraints and then cached it out. Now I have the toggles and zipper to add I can use vellum as it doesn't do anything with hard bodies so how can I constraint them to the geo? Any help would be great! Thanks Andy
  3. Dynamic wool...

    Hey thanks for this! I will upload a hip file so you can see what I'm working with .
  4. Dynamic wool...

    Hi, So I have a complex problem that I can't get to the bottom of. I have created trails using volume curl fields. I want it to look like a ball of synthetic down/woollen filling. Now I want this to be dynamic so if it laded on the floor it would have volume but if I use vellum hair it just falls flat because it is just a bunch of curves. Any ideas ? Thanks Andy
  5. Scatter pscale changes every frame!

    Thank you so much anim! I'm learning a lot! I think i have worked out the problem tho. I basically am trying to delete points outside the FOV to make it run faster. The problem is that this seems to change the point number so it starts flashing all over the place. Any ideas of how I can trim point outside the FOV without changing the actual point data? Thanks Andy
  6. Scatter pscale changes every frame!

    okay thanks! So I need the particles to stick on the deforming geo but also for the values to stick to the particles i.e pscale. I used an attribute transfer from a held frame after the interpolate not sure it is working tho. thanks
  7. Hey, I have a very frustrating issue. I have an alembic that I have scattered points onto and managed to get them to stick in place. The problem is now the random values I have assigned to these points i.e pscale, change every frame. Does anyone have an idea how resolve this, please? Thanks Andy
  8. Divider animation

    Hey people, I saw this free plugin for c4D https://www.behance.net/gallery/89028573/DIVIDER-FREE-C4D-FRAGMENTATION-PLUGIN It's pretty cool and this guy did a great set of animations with it. My question is... Anything ne have an idea of how to implement a similar system in Houdini... I would love to play with it. Thanks. Andy
  9. RBD Spheres fall through box

    Amazing thankyou for this! I thought no I'm slowly starting to understand the s beast of a program!
  10. RBD Spheres fall through box

    Hey, Unfortunately it's not working... I have attached the scene file. It should be working so I don't know why it isn't. THanks Andy spheres.in.box.hipnc
  11. RBD Spheres fall through box

    Hey people of the internet, I feel like I'm being really dumb and I cant work this out. I haven't had much experience with RBD solvers because I usually use C4D for these sort of simple setups. Basically I have a load of spheres inside a box and I want the box to contain them. Unfortunately, the spheres just pass through. I have fiddled with it and can get it to work. If it's set to bullet it sticks some of the spheres and the rest pass through. I have attached a screenshot of my set up.
  12. Hey there, I have a simple vellum setup with a dop net creating an object every few frames. Im trying to make it do each object that is created then has random orient. Any suggestion of the best way to do this. Thanks
  13. Heightfields

    Hi!, Thanks both for your reply. I will have a look at them now and have a play. I will let you know how I get on. Cheers Andy
  14. Heightfields

    Hey, thanks for the advice, I have attached a new file to look at. If I convert the heightfield to a VDB it makes it a cube and ruins what I am trying to do I need to mesh the heightfield with my existing geo. Thanks Andy Mountain_Duality_Sole_help.hip
  15. Heightfields

    Hey there! Okay so I have got a grasp of how a heightfield works but what I am trying to do is confusing me. I have the sole of a shoe and on one surface I want it to have the heightfield on. How do I merge the heightfield with the surface? I have used the project node but I still get the square. I also used attributes from volume and then a point wrangle to transfer the height to the Y position but It affects the whole of the geo. I need help! Mountain_Duality_Sole.hip