Trees and leaves

Forums Houdini Indie and Apprentice Trees and leaves

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Silvia Black: Member; 4 posts; Joined: Nov. 2015; Offline

Nov. 16, 2017 7:20 a.m.

hi everyone, I started a little project, I made a tree with l-system and now I want to put dynamic leaves in the branche. I try to create a group with points of the l-system and use a pop to put particles and instancing this but pop don't respect the group of points I made, someone can help me ?? thanks ^-^

(I want to create a little forest of cherry trees and the leaves fall)


mestela: Member; 1737 posts; Joined: May 2006; Offline

Nov. 16, 2017 6:21 p.m.

can you post a hip? easier to help if there's something to start from rather than building from scratch.

http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]


Silvia Black: Member; 4 posts; Joined: Nov. 2015; Offline

Nov. 17, 2017 5:33 a.m.

of course Mestela, this is the scene, I only have a simple L-system and a small leaves, I try to do a tree leaves fall, in maya or houdini but I can't how to do, thanks

Attachments:
l-system.hipnc (1.7 MB)


mestela: Member; 1737 posts; Joined: May 2006; Offline

Nov. 17, 2017 8:10 a.m.

doing lots of leaves at the moment, so this is all fresh in my mind.

most of the stuff going on in this file i've covered in a few places:

http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#Constraint_networks [www.tokeru.com]

http://www.tokeru.com/cgwiki/index.php?title=ConstraintNetworks [www.tokeru.com]

Plenty more you could do here, but this should keep you busy for a bit.

-matt

Attachments:
l-system_leaves_rbd.hipnc (2.1 MB)
tree_leaves_rbd_fall.gif (822.6 KB)

http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]


Silvia Black: Member; 4 posts; Joined: Nov. 2015; Offline

Nov. 17, 2017 8:24 a.m.

Owww!! thanks you so muuuch, the web is amazing, have a lot of information.

I have another question hehe, I have in Maya a plane with the texture of petal and have an alpha so you only see the form of the petal, you know how do this tipe of material in Houdini?¿? I put a photo because i don't know if I'm explain correctly.

How I don't know how to do in Houdini for the moment, I did the proyect in Maya but iqual i don't know how continue and i don't know how to transfer the material of maya to houdini.
Thanks so much, really

Attachments:
Captura.JPG (65.4 KB)


mestela: Member; 1737 posts; Joined: May 2006; Offline

Nov. 18, 2017 4:18 a.m.

If you stick with the principled material for now, you can write out a colour and alpha texture separately, put colour to the diffuse slot, and alpha to the opacity slot.

Attachment Not Found

Edited by mestela - Nov. 18, 2017 04:20:36

Attachments:
leaf_material_slots.PNG (42.2 KB)
leaves_alpha.gif (77.8 KB)
tree_material.hipnc (2.1 MB)
opacity_slot.png (16.2 KB)

http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]


Silvia Black: Member; 4 posts; Joined: Nov. 2015; Offline

Nov. 24, 2017 5:55 a.m.

OMG thanks sooo much, you're the best


goldfarb: Staff; 3455 posts; Joined: July 2005; Offline

Nov. 24, 2017 10:27 a.m.

“the best”?
I don't know about that….

Michael Goldfarb | www.odforce.net
Training Lead
SideFX
www.sidefx.com

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