…copy a geometry definition onto each primitive of a second object, and deform the copied geometry based on the contour of the primitive on which the geometry is copied to?!
Something similar to the attachment?
How is this technique called in Houdini?
Thanks.
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Technical Discussion » Is it possible in Houdini to...
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- coccarolla
- 113 posts
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Houdini Lounge » Scatter / Instance Multiple Objects (per object probability, scatter by color)
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- coccarolla
- 113 posts
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Hello peeps,
Can anyone help me find some examples of scatter multiple objects / instances with controls on probability of each, or using color to influence the placement of explicit objects?!
I am thinking of building myself a scatter system but not sure if I am up to the task…
Thankies.
Can anyone help me find some examples of scatter multiple objects / instances with controls on probability of each, or using color to influence the placement of explicit objects?!
I am thinking of building myself a scatter system but not sure if I am up to the task…
Thankies.
Houdini Lounge » Dynamic Trees / Vegetation
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- coccarolla
- 113 posts
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mestela
http://lmgtfy.com/?q=Rigging+trees+in+Houdini [lmgtfy.com]
I haven't looked at hossams tutorial, but the trailer looks good.
Hehe! Thanks for the ‘pro’ tip. That indeed looks rather good, but at $270 it's a little steep for me atm. Hence the emphasis on affordable, even free resources in my original post.
Houdini Lounge » Dynamic Trees / Vegetation
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- coccarolla
- 113 posts
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Olaf Finkbeiner
Hi Coccosoids,
the only readymade tree/plant system i know for Houdini here:
https://gumroad.com/d/476f75e1da12375c2f69de03798373e6 [gumroad.com]
welcomies
Olaf
Thanks, but I cannot access the link. Can you post at least a screenshot and I can try looking for it myself?
Thanks again.
Houdini Lounge » Dynamic Trees / Vegetation
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- coccarolla
- 113 posts
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Hello gang,
Do you happen to know of any resources free or paid that deal specifically with dynamic trees / vegetation inside of Houdini, with the possibility of also adding falling leaves? Also something to consider is importing an external model.
By dynamic I mean coherently animated across the scene, and not necessarily full dynamic trees.
This is for a long term personal project so very willing to learn.
Thankies.
Do you happen to know of any resources free or paid that deal specifically with dynamic trees / vegetation inside of Houdini, with the possibility of also adding falling leaves? Also something to consider is importing an external model.
By dynamic I mean coherently animated across the scene, and not necessarily full dynamic trees.
This is for a long term personal project so very willing to learn.
Thankies.
Technical Discussion » Point VOP - position gradient
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- coccarolla
- 113 posts
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Nima
Hello.
I put simple HIP for you.
Play with the ramp parameter to see the result.
Hope this helps.
Works like a charm - thank you very much.
Technical Discussion » Point VOP - position gradient
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- coccarolla
- 113 posts
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Hi houdini-ers!
I have a small problem in a Point VOP - hopefully with the aid of the attached image you will be able to understand the effect I am trying to achieve.
So given a few points in space, I want to sample their y position, extract min and max values and then use a ramp relative to the min position to move the points, essentially until they become flat with the point with the original min y value.
Doable?
I have a small problem in a Point VOP - hopefully with the aid of the attached image you will be able to understand the effect I am trying to achieve.
So given a few points in space, I want to sample their y position, extract min and max values and then use a ramp relative to the min position to move the points, essentially until they become flat with the point with the original min y value.
Doable?
Edited by coccarolla - Aug. 5, 2017 07:31:48
Technical Discussion » [How do I] : achieve this very simple 3ds Max effect
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- coccarolla
- 113 posts
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Hello again… kind sirs,
So I still don't feel confident enough to look around on myself in houdini for a solution to this. Well, I would settle for a pointing in the right direction at least.
I was playing around 3ds max the other days and I came up with a very simple way of achieving a bulge effect driven by a mesh. I then proposed I try to replicate this in maya and houdini. So far with maya things are not looking too pretty, and now I turned to houdini to have a go at it.
This is the effect:
Does anyone have any idea on where to start with this? Or a scene file of something similar just laying around somewhere doing nothing!?
Thanks,

So I still don't feel confident enough to look around on myself in houdini for a solution to this. Well, I would settle for a pointing in the right direction at least.
I was playing around 3ds max the other days and I came up with a very simple way of achieving a bulge effect driven by a mesh. I then proposed I try to replicate this in maya and houdini. So far with maya things are not looking too pretty, and now I turned to houdini to have a go at it.
This is the effect:
Does anyone have any idea on where to start with this? Or a scene file of something similar just laying around somewhere doing nothing!?

Thanks,
Houdini Lounge » New Website: Post Feedback Here
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- coccarolla
- 113 posts
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*hi guys! I can't seem to post new topics, especially in the technical discussion forum. I was able to a few weeks back. Help?
Technical Discussion » [How do I] : sample a cloud / volume density to drive parameters in SHOP
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- coccarolla
- 113 posts
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Hello, it's me again!
Ok, so quick question: how can I sample the density of a volume (a cloud) and have the low density values exhibit more of a texture or an effect in a SHOP network?! In other words: can I use the density to mask certain mix nodes, or use it as a weight for a multiply etc?
I've tried a multitude of things, but I'm afraid I lack a deeper understanding of volumes in houdini (and in general). I'm not even sure how the density is stored, or what are the exact differences between ‘density’ and ‘cloud density’ and where to begin learning about these. So if anything, I would greatly appreciate if someone would at least point me in the right direction.
Thank you,

Ok, so quick question: how can I sample the density of a volume (a cloud) and have the low density values exhibit more of a texture or an effect in a SHOP network?! In other words: can I use the density to mask certain mix nodes, or use it as a weight for a multiply etc?
I've tried a multitude of things, but I'm afraid I lack a deeper understanding of volumes in houdini (and in general). I'm not even sure how the density is stored, or what are the exact differences between ‘density’ and ‘cloud density’ and where to begin learning about these. So if anything, I would greatly appreciate if someone would at least point me in the right direction.
Thank you,
Technical Discussion » [How do I] : use camera projected sequence to multiply density in a shop cloud network?
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- coccarolla
- 113 posts
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tamte
here is example, look at green nodes in SHOP/cloud material
Wow, this is so cool - I have no idea what you did there but I'm going to spend some time ‘debugging’ (fancy word, heh) it. I wonder why there aren't any more straightforward tools like… “camera map” maybe?!
Technical Discussion » [How do I] : use camera projected sequence to multiply density in a shop cloud network?
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- coccarolla
- 113 posts
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Ok, ok,
You can probably tell that I have a big yellow lemon on my Houdini app, which means I am a total noob. Took me a day to figure how to multiply density with some turbulent noise… but please help me take this a little further.
So how can I bring a camera projected sequence in SHOP and multiply it over the density inside a cloud shader?
Any help or hints will be appreciated.
Thank you,
You can probably tell that I have a big yellow lemon on my Houdini app, which means I am a total noob. Took me a day to figure how to multiply density with some turbulent noise… but please help me take this a little further.
So how can I bring a camera projected sequence in SHOP and multiply it over the density inside a cloud shader?
Any help or hints will be appreciated.
Thank you,
Houdini Lounge » FMX 2016 event
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- coccarolla
- 113 posts
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