lsystem Help needed

[Lakhwinder Singh Dhillon]

Hi

After creating the bony structure of lsystem, how to make it look like a real plant? I mean skinning probably

like this

http://static.highend3d.com/articlesimages/28/image001.png

or

http://www.geocities.com/ffrog.geo/rays/fern.jpg

or

http://www.geocities.com/ffrog.geo/rays/rose_in_vase.jpg

I got no idea how people make it look like a leaf or branch

At present i m studying defining rules for lsystem, but every now and them i need some inspiration to do it.

so pls if you could forward me to some tutorial for skinning lsystem plant

or

help me by urself I ll be very very thankful

Thanx in advance

[rdg]

every now and them i need some inspiration to do it.

The Algorithmic Beauty of Plants

The book on Lsystems. Now also available free on the web.

See also this buried thread for more inspiration: Books to read

[Lakhwinder Singh Dhillon]

The Algorithmic Beauty of Plants

The book on Lsystems. Now also available free on the web.

See also this buried thread for more inspiration: Books to read

I have got that book already. I need tutorial for skinning the lstructure to look loke a tree or bush.

Thanx for those links anyways

[edward]

Have you tried the PolyWire SOP?

[old school]

To further Ed's post, the PolyWire SOP has a local preset for lsystems. You find presets in each Node's parameter pane gear menu.

Then in your L-Systems SOP, make sure to check the option to generate the attributes. The PolyWire will then pick up the lsystems attributes to skin your tree.

[Lakhwinder Singh Dhillon]

To further Ed's post, the PolyWire SOP has a local preset for lsystems. You find presets in each Node's parameter pane gear menu.

Then in your L-Systems SOP, make sure to check the option to generate the attributes. The PolyWire will then pick up the lsystems attributes to skin your tree.

Thanx got it, but the radius of the skin is same all over the tree from root to end tip. see the attachment

and one more thing, now how to create leaves or flowers.

[old school]

The global method to taper the branches is to use the L-System SOP's Thickness Scale parameter in the Tube folder. That will allow you to taper based on the arc length of each branch.

You can then modify the Thickness Scale in the L-Systems rules using the built-in variables to the L-System SOP found in the documentation:

"(s) Multiply current length by s. Default Step Size Scale.

!(s) Multiply current thickness by s. Default Thickness Scale.

;(s) Multiply current angle by s. Default Angle Scale.

_(s) Divide current length (underscore) by s. Default Step Size Scale.

?(s) Divides current width by s. Default Thickness Scale.

@(s) Divide current angle by s. Default Angle Scale.

[Lakhwinder Singh Dhillon]

"(s) Multiply current length by s. Default Step Size Scale.

!(s) Multiply current thickness by s. Default Thickness Scale.

;(s) Multiply current angle by s. Default Angle Scale.

_(s) Divide current length (underscore) by s. Default Step Size Scale.

?(s) Divides current width by s. Default Thickness Scale.

@(s) Divide current angle by s. Default Angle Scale.

I dont understand this Multiply, divide??????

where ?

and

This is what i get after changing parameter like scale length and others. c the attachments.

First one is, when polywire is not added.

Second with polywire added.

how to get leaves and flowers?

[Ezz]

http://www.cmivfx.com/SideFX_Houdini_Train..._1/default.aspx

If you`re interested in learning a bit more about l-system, these videos are really cool.

Erik

[Lakhwinder Singh Dhillon]

http://www.cmivfx.com/SideFX_Houdini_Train..._1/default.aspx

If you`re interested in learning a bit more about l-system, these videos are really cool.

Erik

I appreciate that. but i don't have enough money to but that.

[old school]

I concur regarding the two CMI VFX L-Systems DVD's. They provide both an introduction and advanced techniques. You can go in not knowing anything about building l-system rules.

Then there is RTFM...

You will find a basic walk-through of the l-systems SOP in the operator's help card with a very informative example file called LSystemMaster (accessed from the bottom of the help card). There are very well written comments on many of the critical tiles. Use the MMB on the tile icon to see the comments. After studying the simple examples, it should give you a few tools to start experimenting further.

The l-system SOP also has25 presets that you can try and inspect the rules.

All your questions above are covered in the help card info, presets and example file. The CMIVFX dvd's will take this much further implementing many of the ideas and techniques in the book Algorithmic Beauty of Plants (link at the bottom of the L-Systems help card).

[Lakhwinder Singh Dhillon]

Use the MMB on the tile icon to see the comments. After studying the simple examples, it should give you a few tools to start experimenting further.

I ll try this. Thanx