Hello,
I’m relatively new to SpeedTree and am trying to create an ivy that droops/crawls down a wall
There are lots of tutorials focusing on ivy climbing UP walls, but I have found it to be slightly unintuitive to have it grow down the wall.
Like this image -
I’ve tried a few different approaches that haven’t worked as I would like.
I have found and used geometry forces to have them cling to walls/other objects and that has worked well.
If someone could outline a basic workflow, with some of the key settings that I should look at to achieve something like this, that would be great.
Thanks
Hi @bmarshall1,
There’s no one right way to approach this, but here’s one way to get you started.
In this scene I added a zone and placed it at the top of my wall. I added trunk generators with Generation Mode set to Interval and Count to 2. I increased the frequency of the trunks. Then I created a geometry force from my wall and set the behavior to Force:Attract and Collide:Obstruct. Then I added a direction force facing down to push the vines in the right direction. You might need to fiddle with your zone and force strength/curve to get all the vines sitting on the wall correctly.
Then I added vines to come off of the main vines and then added my leaves. I used Phyllotaxy with Style set to Opposite (distichous). I enabled the Wall and Direction forces and tuned the Start Angle. tuned the direction I used two separate generators with different First and Last boundaries so that I could fine tune the small vines and leaves that sit on top of the wall:
For the leaves, I pushed Sky Influence close to 1 with some variance. Then I tuned the direction of the leaves further and added more variance.
From there it’s just a matter of adding more variance to break up the patterns.
I hope that helps!
I ended up making it using a Trunk with mode Interval, but your method is really interesting and definitly offers something different for me to learn from.
Thanks!
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