rotate points ?

[messipte]

Hi i'm still very new to houdini so sorry for the noob question.

I want to create a stem with leaves attached to them, I created the stem and used the tangentv in order to attach the leaves, now I'd like to rotate each point by a certain angle, and i'm stuck.

Tried with pointvop and matrix, had no success, I guess it could be possible with quaternions but still, I can't figure out how to do this simple thing...

Can someone help me ?

Thanks !

[boby]

hi messipte,

i guess you want to rotate it along the branch?

here is a simple hip file. degtorad node let you rotate vector by an angle in degree, feel free to replace it with any random point value

If you want to rotate it in other random direction, you can use any random vector per point instead of t.

boby

rot_vec.hipnc

Edited September 30, 2017 by boby

[messipte]

Thank you so much boby !

[messipte]

Thank you your setup works great but now, I have a hard time trying to orient the leaves on the new N. What is wrong in my setup ?

Thanks a lot !

stem_2.hipnc

Edited October 1, 2017 by messipte

[boby]

Default is to align copy's Z axis to point normal.

-To align your line, build it align with z > direction = (0,0,1), instead of (1,0,0)

-same thing for your sphere, stretch it in world Z axis 

 

boby

[messipte]

Thank you a lot, will do that !

[messipte]

...and it works ! Thank you so much for the hint !