Unable to Attach Object to Curved Wall

[Banksyde]

So I am trying to attach a tree branch to a curved wall, the wall is serving as a curved green screen, and the bounding boxes for the wall and the tree branch will not allow the two items to touch. I tried breaking the restraints by lifting each from the ground, but it doesn't seem to help. Not sure what is going on.

I have a iMac 2011 (old), 3.4 Ghz Core i7 OS 10.11

By the way, the Belzier handles on the curved wall are really cool. Nice feature!

[ChrisB]

Hey now...I apologize in advance for answering your question with another question.

I don't have the tree branch model you are using nor do I know the wall dimensions and degree of curve on your green screen so I have to use my imagination a bit here but wouldn't some portion of the branch extend through the curve of the wall if you tried to attach the 2 objects together?


Or am I missing something else?

[jamesw]

As Chris says, our standard object library has no "tree branch" object, so we can't just try what you're trying. Giving an object a little elevation should let it intersect with anything.

Maybe your branch is like our "background trees", which are billboards that don't behave quite like 3-dimensional objects?

[Banksyde]

James & Chris,

Hmm. I'm wondering if that is the case. I'll try a different tree branch.

Yes, Chris, what you have demonstrated is pretty much what I am trying to do.

Gare

[Banksyde]

Again, I tried elevating the tree and the wall separately, but I still can't get them to intersect. I'm using an entire tree and then letting a branch stick out through the wall.

[jamesw]

Have you tried something like this using one of the standard objects? If so, which one? It would really help if I could try exactly what you're trying.

[Banksyde]

Yeah I have tried it with the grass, I believe that is one of the standard objects, and I am still having the same problem. Would manipulating the Bezier handles have any effect on this?

[jamesw]

No, there's no standard object named "grass". No, I don't think that using the Bezier handles would affect this.

How about this: Make a project file with a curved wall and some object that won't attach to it. Use File > Export... > Nonstandard Objects & Textures to make a cpack file to go along with it. And send both files to me by private e-mail.

[Banksyde]

Okay. Will do.

[Banksyde]

You are right, non-standard objects do not intersect with curved walls; matter of fact, NSO do not intersect with any of the walls. I don't know why it shouldn't. Anyway, I will sent you a file and a NSO c-pack.

Perhaps if I made a cube into a wall, NSO might then be able to intersect.

[jamesw]

We finished the discussion in private e-mail, but for any observers, here was the resolution:

If you float an object up in the air with a positive elevation, then FrameForge allows it to intersect anything. But if you give an object a negative elevation, it intersects with the ground but not other objects. (We were thinking of boats as a case where you'd want that behavior.) The tree branch that Banksyde was trying to intersect with a wall had a negative elevation. The solution was to temporarily turn off collision detection (Tools > Disable Collision Checking), move the branch into place, and re-enable collision detection.