topic Re: 3D tree object beyond parameters in Libraries & objects

3D tree object beyond parameters

sarahric — Thu, 05 Jul 2012 01:09:08 GMT

I would like to know why this happens, when I use a tree object from the Archicad library and resize it, the leaves are left floating far from the trunk and branches and well beyond the dimensions given.
For example, I have a tree here that is 850x850mm, and shows this in plan, but in 3D the leaves extend to up to 1500mm from the trunk (so tree is actually 3m in diameter)
Parameters:
density in % 40
resolution of crown 70
Diam of crown 80
res of leaves 10
diam of leaves 50

Re: 3D tree object beyond parameters

Anonymous — Sun, 03 Mar 2013 09:21:49 GMT

I see no one bothered to share their wisdom on this one.

I've had this problem with archicad trees since right back at AC10, I've never been able to figure out how to adjust them without getting leaves floating off way outside the size of the tree...frustrates me to no end... I don't suppose you managed to figure it out did you?

Re: 3D tree object beyond parameters

David Maudlin — Sun, 03 Mar 2013 14:53:07 GMT

sarahric & Nick00R:

What is the name of the library part? When I tried those parameters with "Tree Deciduous 05 16" the 3D model was fine.

David

Re: 3D tree object beyond parameters

Anonymous — Sun, 03 Mar 2013 14:59:17 GMT

I'm not sure about the object in question in this particular thread, I came across this topic because I was searching re how to use the archicad tree objects (any one of the deciduous series) in the standard library, I just can't get a reasonable looking tree once i start changing away from the pre-set parameters. There seems to be a particular ratio of settings that I just can't get right when I scale them down to a smaller size, say a few meters high.

Re: 3D tree object beyond parameters

sarahric — Sun, 03 Mar 2013 22:36:14 GMT

Yes, any of the standard trees in the archicad library

Re: 3D tree object beyond parameters

David Maudlin — Mon, 04 Mar 2013 12:54:00 GMT

sarahric wrote:
Yes, any of the standard trees in the archicad library

I am not getting a problem with the parameters you listed. You can try the default settings, then change them one at a time to see which one causes the problem.

David

Re: 3D tree object beyond parameters

sarahric — Mon, 04 Mar 2013 22:51:01 GMT

The attachment shows where I have taken the default tree and changed the parameters. You can see how a tree given the same height and diameter can look completely different when the density or crown resolution is changed.
The tree goes well beyond the diameter set at 8m.
The tree needs to be changed to look more realistic, but goes well beyond the settings

Re: 3D tree object beyond parameters

David Maudlin — Tue, 05 Mar 2013 14:05:11 GMT

sarahric:

I was able to get this tree by changing the Density in % = 100, then rotating a copy of the tree 45˚ around the tree's center point. But the polygon count is also going up. If the trees are just for elevations, then a 2D version makes more sense. If the trees are for 3D, then expect more processing time, ArchiCAD is not built for handling big polygon counts, like dedicated rendering software.

David

Re: 3D tree object beyond parameters

sarahric — Tue, 05 Mar 2013 23:21:51 GMT

Thanks David,
How did you go with the actual size of the tree. Is it beyond the size given?
Also, your image still shows leaves floating out from the tree some way.

I have a project where I wanted a low small tree (almost a bush, but the bush object is not appropriate) in my 3d rendering right next to the house, but I couldn't make it look right without leaves floating of and inside the house!

Re: 3D tree object beyond parameters

Dwight — Tue, 05 Mar 2013 23:29:03 GMT

You can spend a lot more time with the tree, but the floating leaf issue is a normal outcome since tiny branches aren't rendered.

Use the ceiling element to SEO [downward] the errant indoor tree foliage.

Re: 3D tree object beyond parameters

Erwin Edel — Wed, 06 Mar 2013 07:49:33 GMT

Have you tried ArchiTree BROAD 1.0 from the object depository (sitework > garden)? Maybe it will suit your needs better. http://archicad-talk.graphisoft.com/object_depository.php?

Re: 3D tree object beyond parameters

David Maudlin — Wed, 06 Mar 2013 14:00:33 GMT

sarahric wrote:
How did you go with the actual size of the tree. Is it beyond the size given?

It's a tree, I don't expect precise dimensions (now if it was that way for Columns, different story). You can always decrease the size to get a smaller diameter.

sarahric wrote:
I have a project where I wanted a low small tree (almost a bush, but the bush object is not appropriate) in my 3d rendering right next to the house, but I couldn't make it look right without leaves floating of and inside the house!

Another option is to place the tree/bush on a layer that is visible for the exterior rendering, but hidden for interior views, if you are not showing both at the same time (like with BIMx).

David

Re: 3D tree object beyond parameters

sarahric — Wed, 06 Mar 2013 23:10:27 GMT

Thanks.

I had started to put 3d trees on a seperate layer, and 2d trees in plan, just because I need the correct width of the tree in plan.

Guess thats it