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Old 11-19-2012, 12:27 PM   #1
JayCox
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Animating Leaves

Heya,

I have a question concering leaves and ivy...


I created ivy with the ivy Generator 1.2.1.
This generated 2 big meshes with adult/bigger and young/smaller leaves.

I want these to sway in the wind.

If I use a wind deformer it naturally looks crappy flag-ish...

Is there a posibility of creating a wind setup with one big object and animating the vertecies / polygons?

I could generate render instances of every leaf but that would create around about 10.000 objects and kill my machine :(

Help would be very appreciated!

Greetings,

JayCox
 
Old 11-19-2012, 01:16 PM   #2
Kuroyume0161
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Hello JayCox,

There is a good online tutorial that shows how to do this:

http://lesterbanks.com/2012/10/anim...d-in-cinema-4d/

I will definitely put a link to it on my website.

Thanks,
Robert
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Old 11-19-2012, 03:57 PM   #3
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Hey thank you! About 5 minutes after I posted my question I found this tutorial aswell Very helpful but the result is not quite the quality yet that I would very much like to have.

Especially one thing bugs me: Can you tell me a way of stopping leaf-collision?

Another question about collision:

I have to click a guide object along which the ivy grows... but the moment I click "Give Birth" it seems to stop caring about the object and simply let's the leaves intersect with it... Can I somehow controll that too?


And last question: What can I do with the Branch Splines and IGSsplines ( what ever they are)?

I cannot find any proper tutorials on the internet yet and Glen Faughts next Ivy Generator Tutorial is not online yet :(

Thank you very much for your help! I am planning on creating some high quality tutorials once I 100% figure out how to use it properly

Greetings,
JayCox
 
Old 11-19-2012, 04:28 PM   #4
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FWIW:
Just a note on ivy leaves ... my home's ground cover is ivy and vinca, pakisandra, etc.
None move in other than above moderate type wind.

Ivy is very woody and stiff with rigid leaves that are pretty static.
The ivy vines also have tendrils that grab everything to anchor it down.

When the vines are ripped from the surface of a wall or a tree, then
the entire length will sway easily in a breeze.

Your weather particulars may vary.
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Old 11-20-2012, 07:14 AM   #5
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Quote:
Originally Posted by JayCox
Hey thank you! About 5 minutes after I posted my question I found this tutorial aswell Very helpful but the result is not quite the quality yet that I would very much like to have.

Especially one thing bugs me: Can you tell me a way of stopping leaf-collision?

Another question about collision:

I have to click a guide object along which the ivy grows... but the moment I click "Give Birth" it seems to stop caring about the object and simply let's the leaves intersect with it... Can I somehow controll that too?


I will answer both of these questions together since they are related.

The randomness of the leaf creation, as you say, does not care about interpenetrating the object, other leaves, or even the branches. I think that the algorithm will even have branches interpenetrating. The original algorithm and implementation seems to be more concerned about simulating ivy than considering this finer realism. I'd have to investigate ways to adjust the results so that that doesn't occur.

Quote:
Originally Posted by JayCox
And last question: What can I do with the Branch Splines and IGSsplines ( what ever they are)?


Branch Splines are just a way to create branches whose geometry does not depend on the internal algorithm used by the original Ivy Generator. You can use a Sweep NURBS and accompanying 'contour' (cross-section) spline to add geometry and texture to the branch splines.

IGSpline is a plugin spline object that has animatable spline growth (that follows the Growth algorithm in growing from the root outwardly). While you can animate splines in Cinema 4D, it is not always possible to control how the spline animates, especially with multi-part (multi-segment) splines like branches. Again, you can add geometry and texture using Sweep NURBS and materials.
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Old 11-20-2012, 11:21 AM   #6
JayCox
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Awesome Mate! Thank you for your insight!

Another question occured to my, while I was at it

I want to fill a huge wall with some ivy and targeted said big wall. When i then started to grow the ivy it went flying all over the place and went floating way about the wall, no matter what options I put in. Then, since I anyway have to generate more than one plant I created a stand-in cube and let it grow along this. Here it worked wonderfully.

Is the Ivy generator working relativly to the objects size? I made the cube the same thickness and height and it worked. When I also adjusted the length it started blowing up again.

Thank you for your help and for making this great plugin!

Greetz,
JayCox
 
Old 11-20-2012, 11:21 AM   #7
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