Jump to content
domino

Blowing in the wind...but only once

Recommended Posts

not blowing in the wind.hipHello everyone,

I've been going through the "blowing in the wind" tutorial found below,and have been having a bit of a problem with the expression

in the force pop:

http://www.digitalanimators.com/HTM/Tutorials/using_houdinis_particle_syatem.htm

The tutorial says in the force sop in the x axis to enter: 0.5*sin(($F*5)+($PT*50))+.25

When I run the sim it works great for the first 30 frames or so then the particles stop their wave motion and jitter. It seems to be the $PT causing the issue but I'm not sure how. I've attached the .hip file if needed.

I'm sure the answer is staring me in the face but for the life of me I can't see it.

Thank you in advance!

Share this post


Link to post
Share on other sites

not blowing in the wind.hipHello everyone,

I've been going through the "blowing in the wind" tutorial found below,and have been having a bit of a problem with the expression

in the force pop:

http://www.digitalanimators.com/HTM/Tutorials/using_houdinis_particle_syatem.htm

The tutorial says in the force sop in the x axis to enter: 0.5*sin(($F*5)+($PT*50))+.25

When I run the sim it works great for the first 30 frames or so then the particles stop their wave motion and jitter. It seems to be the $PT causing the issue but I'm not sure how. I've attached the .hip file if needed.

I'm sure the answer is staring me in the face but for the life of me I can't see it.

Thank you in advance!

Just change the $PT in the force POP to $ID and you should get the results that you are looking for

-Ryan

Share this post


Link to post
Share on other sites

Just change the $PT in the force POP to $ID and you should get the results that you are looking for

-Ryan

That's fantastic. Thanks Ryan! Especially for the quick reply. I've been banging my head against the wall on that one for a couple of days.

I have one other problem, which is that I am trying to make the particle streams in the previously attached .hip file look like they are stalks of wheat blowing and bending in the wind. How would I go about applying an image to a stream of particles? Is that even possible? I'm totally stuck on this.

Share this post


Link to post
Share on other sites

I didn't look at your hip, but you can skin your particles using the particleFluid surface SOP, and then apply your material.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×