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Thread: Custom Trees?

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    Custom Trees?

    Has anyone ever created custom parametric trees that allow you to set parameters such as trunk diameter, drip edge, and height?

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    Administrator Gordon Price's Avatar
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    Quote Originally Posted by jshor View Post
    Has anyone ever created custom parametric trees that allow you to set parameters such as trunk diameter, drip edge, and height?
    Something like this? This one is pretty simple, and describes a specific type of tree, so you provide a diameter, and all the other parameters flex appropriately. I prefer a different family for each general shape or species, rather than trying to get an all in one planting family.
    Also has a rather simplistic material mapping, but it gets the job done, or forms a starting point for something more refined.

    Gordon
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    Moderator cellophane's Avatar
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    There was an AU class about renderings in Revit that had some pretty nice trees in the class data file. I think it was AB4564.

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    Thanks for your help! I appreciate the tree file-- I'm looking for spruce and aspen trees in order to do an accurate solar site study. If you happen to have spruce or aspen parametric files please let me know Thanks again

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    Administrator Gordon Price's Avatar
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    jshor,
    I do have a typical conifer, but it is also pretty simplistic, more appropriate for presentations than analysis. Mine tie height to diameter, and only offer one shape, and I would guess that for an accurate solar study you would actually need height and diameter as independent variables at a minimum. I also have a generic "round" tree, a lollipop or foam ball on a stick analog. I'll post them when I get home, and hopefully that gets you a good start in building some families that work for your analysis.

    Gordon

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    Moderator snowyweston's Avatar
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    I've been modelling trees with height, stem girth, crown spread & height, N/S/E/W leanings, root ball depth & diameter, species (common & latin) and all manner of other parameters, since 2008.... but despite all the parametric data I can deliver with my tree (developed in conjunction with an arborculturist) the end truth is, it still doesn't look like "the" tree, nor will assist you in anything more than conceptual massing/shading studies... okay, so having the root ball depth & diameter also enables you to do below ground level clash coordination, but, well, you've not stated what you need this for...


    EDIT#1

    Apologies on behalf of chad & Gordon, they take their roles too seriously - and leave me to do the honours : "Welcome to the forum jshor!"

    EDIT#2
    I now note this is in the rendering gallery section, so I suspect it's less "parametric" data you're after, more model-configurable data (which, IMO, should be one and the same) - in which case, I fear you might be wasting your time for Revit trees to look like they do in the real world (IMO RPC suck) and you would be better off looking at complimentary software like Max, Lumion and/or TwinMotion for more "realistic" looking trees.
    Last edited by snowyweston; February 8th, 2013 at 10:02 PM.

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    Have a look on archigrafix | archigrafix.com . They have a loot of parametric trees that should do what you need.

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    Administrator Gordon Price's Avatar
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    Quote Originally Posted by WilliamJones View Post
    Have a look on archigrafix | archigrafix.com . They have a loot of parametric trees that should do what you need.
    The main problem I see with these is that they are all "winter" trees. I love the stark look on white, but for presentations I would like to have the flexibility of a foliage mass, wish some varied shape, and a foliage material parameter and associated materials with different colors and amounts of transparency. With the ability to toggle the mass on or off in various ways. Of course Revit's graphics engine STILL can't cast a partially transparent shadow from a partially transparent material, so we are still hamstrung by the engine.
    That said, if the dimensions of these trees are arboreally correct (inappropriate usage, for sure ) or totally user controllable, then these may do the trick very well for the OP. And I suspect there is some great learning opportunity in these trees. I am really curious how they are modeled. But they sure do look better than the render junk Revit ships with.

    Gordon

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    I made a simple all-in-one tree family which I'm planning to extend some time. I designed it to look decent in plan views, elevations and 3d.

    The problem is, you EITHER go for the looks (with a semi-transparent or transparent material) OR for the shadows. Never both.
    As a workaround I export my view as PNG twice - one image with shadows and another as a wireframe view. I overlay one over the other in GIMP and there I have what I want.

    Is there a way to make the trees transparent and make them cast opaque shadows at the same time?

    And another question is - is it possible to prevent Revit from cutting the trees in plans and sections? I can't find the 'cuttable' property mentioned here in Autodesk help.
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    Member Hirvio's Avatar
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    Quote Originally Posted by tomekwi View Post
    Is there a way to make the trees transparent and make them cast opaque shadows at the same time?
    I spent some time trying to make it in similar way and came to conclusion that it is not possible. As soon as you add any transparency in material editor, objects don't have shadows.
    Making two versions of plans, exporting and overlay on the sheet can look nice, but there is too much to rework, once project changes come into the game.

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