Jump to content
kyle.kyler

3D Modeling Issues

Recommended Posts

Recently, our office has had some issues with 3D modeling while trying out the the Cut/Fill features of Landmark. Namely, portions of the model appear choppy, as if they are jumping around regardless of where our contour site modifiers are located. Most of the model is behaving as we would expect, but certain portions seem to be rogue. See attached images to see specifically what we are talking about.

 

While creating the model, we noticed a few hiccups. For example, when creating contour site modifiers from our 3D polygons, we selected "Contours" in the drop-down menu. However, once the modifier was created, it appeared as a "Pad" in the OIP. We have manually changed this in the attached file, but are unclear about why this is happening. Although this is a recent issue, it has occurred on more than one file/project in our office. In previous months, contour site modifiers have been created from 3D polygons as expected.

 

Even after altering the site modifier type in the OIP, any conflicts that pop up in the model are listed as intersecting "pads". The question is not whether or not a conflict exists (we can see where certain site modifiers do overlap), but we don't understand why they are listed as "Pad" intersections. 

 

Another potential issue: We've noticed that when contour site modifiers are selected, vertices display on the ground plane instead of on the actual elevation of the object. Does this present an issue in terms of modeling, or is this simply the way that the program displays vertices? 

 

Other actions we've taken:

- Updated Vectorworks to the most recent service pack (2019 SP6).

- Shifted the internal origin to be at the center of the model

Choppy in 2D.PNG

Choppy in 3D.PNG

Cut Fill 3DM.vwx

Share this post


Link to post

Kyle,

This file has many modifiers overlapping, and many pads that are not closed (many contours for your berms should be pads and should be closed. Also add a grade limit to the site. Try these and I will be in touch.

  • Like 1

Share this post


Link to post

I shall watch this with interest as it sounds rather similar to issues I've had with site modifiers (although I'm still on VW2018)

 

I don't really trust site modifiers to behave nicely at all.

Share this post


Link to post

To add to Bryan's excellent input... if you already have 3D polys that represent your proposed contours, you do not need to convert them. Simply add them to the Site-DTM-Modifier class and they will become modifiers. And yes, always use a Grade Limit.

  • Like 1

Share this post


Link to post

Thank you both for your replies.

 

Bryan- there is a grade limit in the file that I have attached here, and it does significantly improve the site model. We will work to close our contours and remove overlapping conflicts.

 

Tamsin- Thank you for the advice on bypassing the contour conversion step. I was not aware that assigning the 3D polys to the Site-DTM-Modifier class could be done instead.

 

Have either of you had situations where you convert an object to a "contour" site modifier and it results in a "pad" site modifier?

 

Thanks again

 

  • Like 1

Share this post


Link to post

Actually, there is no such thing as a contour site modifier. Under that name, it's really just an open Pad. So a 3D Poly does just as well and yes, the class trick us pure magic.

Remember this when creating complex modifiers. The advantage of a 3D poly is that it each vertex can have a unique Z value, unlike a Pad.

  • Like 3

Share this post


Link to post

And... the other advantage of using 3D polys as modifiers, particularly for curves, is that you can run Simplify 3D polys on them, to reduce the vertex count and avoid creating an unnecessarily complex site model which takes forever to calculate.

  • Like 3

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


 

7150 Riverwood Drive, Columbia, Maryland 21046, USA   |   Contact Us:   410-290-5114

 

© 2018 Vectorworks, Inc. All Rights Reserved. Vectorworks, Inc. is part of the Nemetschek Group.

×
×
  • Create New...