Sangsu Lee


About Me

Korea, Republic of


[Profile pending approval]

Recent Forum Posts

Particle's collision behavior which is "stick" doesn't work. Jan. 3, 2019, 5:18 a.m.

Hello Guys,

I'm doing a simple simulation which is rain of arrow.

I set particle's collision behavior to stick. But when particles collide on the ground, arrows lay down.

I want to keep direction of arrows when they collide on the ground.

Can anybody help me?

Growing effect issue Dec. 20, 2018, 5:11 a.m.

Hi guys,

I'm trying to build up some growing effect. But it's not easy to get what I want.

I'm VEX newbie.

Ok here is my reference at 11:58 in this video. []

So I made something similar. Actually not. It's based on this tutorial. []

Is there anybody can help me?

I'm ok with totally different approaching. It doesn't have to be based on the above tutorial.


I copied box to line points. Different line direction got a wrong result. Dec. 3, 2018, 9:22 p.m.

I assume it's the twisting you don't like? I think it looks cool, but if that's not the desired result, you need an up vector in addition to your N.

Add a “attribute create” after the pointVOP1, call it “up,” and make it a vector. Set it to 0,1,0. The planks will untwist.

Reason is that N aligns the copies, but the orientation is ambiguous. Without it, Houdini just guesses and they will spin and do other weird things. Creating an up vector gives it a frame of reference.

Thank you mrCatfish. So much helpful.