I need to produce 2D construction documents from the 3D model.
***How can I control the line weights in the 2D view/drawing generated from a "cut" 3D model?****
I have created a large complex model in 3D made from curved solids and surfaces. I have broken the key components into individual dgn models and then referemced them together in one master model to produce renderings. 3D elements were/are placed on levels/colors for rendering purposes only. I am able to produce the various 2D (views) through Dynamic Views or Clipping boxes/planes.
Once these drawings are created, how can I manipulate the line weights shown from the cut 3D elements or add to the 2D drawing to develope a construction document with dimension, hatch patterns and text? I know this is nothing new...where can I go to learn this?
Ideally this would be in a "Dynamic View" fashion....meaning if I changed the 3D model, my 2D drawings would change as well. I understand it may not work with a high level of precesion, but I would hope enough so I do not have to re-create a new 2D drawing from the 3D model (extracting - pre v8i)
I know in a 2D line drawing the normal process for line weights is controlled via levels/colors and changing the lineweights directly (What you see is what you get, WYSIWYG)
or
In 3D, specifcally BIM, it is my understanding that the 2D representation (Cut lines) of 3D elements are controlled via the parameters specified in the creation of a Parametric Cell - correct??
I have a strong Revit background and how an 3D element is depicted in 2D is controled either in the characteristics of the parametric cell (Family in Revit) or you can actually change the way any element appears in any view simply by right clicking and changing on the fly - a function a have not scene in Bentley.
My inability to produce 2D docuements creates a bottleneck in the projects developement.
I know this is possible, I am very impressed with all that Bentley software can do, but very frustrated in the limited resources available to learn the software. Any guidance, help, tutorials, comments, suggestions is extremely welcome.
Thank you.
Boyd
you are not alone. i think what needs to be understood is that producing a *good* set of 2D construction documents is just as artistic as it is technical. if you look at hand draw elevations from 40 years ago you will understand what i mean. we have just two dimensions to accurately describe a three dimensional building. if your building is a square, it is a snap. but in realitiy - few owners want a square building. we need a more robust set of tools to make a 2D elevation have depth via lineweights, etc. that means that closer objects get a heavier 'outline' and objects farther away not only get lighter lineweights, but less detail as well. i realize that there are more and more tools available to the construction industry so that it can build a building from a 3D model but we are a long way from the time that that will be the 'norm.' in the interim, we need to be able to produce 2D documents [printed out] from a 3D model without such heavy post-drawing extraction editing.
i realize that it is a fairly big investments for the 'interim' but i think it is necessary to encourage firms to adopt 3D technologies. and - if more firms are producing 3D documents, there will be more pressure on the construction industry to accept 3D deliverables.
just my humble opinion.
Sad thing...I have begun to rebuild the project in Revit, so that I can produce construction documents. The reason for me going to Revit is: 1) I know Revit, there are a ton of resources to learn Revit online. 2) Revit does a great job of slicing and dicing a 3D model into dynamic 2D drawings which can be noted, dimensioned and produced as a set while still linked to the 3D model (they are one in the same).
I WANT TO DO THIS IN BENTLEY. I think Bentley is far superior system. The same question applies....
What do I need to do when I create a 3D element to have control over how it appears in a 2D drawing production WITHOUT rebuilding the 2D drawing? Is it a cell issue, parametric cell, is it a level issue??
In Revit, the 2D representation is essentially still the 3D model. Changes made ANYWHERE show up EVERYWHERE.
Any help or assistance is appreciated...tutorials/guidance.
Thanks,
Boyd,
dynamic views use display styles. And there's the "level override" feature, maybe that's the key.
I have a 3D model. In a sheet I attached the 3D model as top view. At this point I can influence the line weights by the concept "level override", each level seperate. In Level Manager > (select the reference) > (select one of its level) > open the properties > change the weight value in override. Then for a view, switch on the view attribute "level override". See the change.
Then from this attached model in the sheet I derived a section callout generated cut. This produces another internal attachment. All the calculated section geometry doesn't care for level overwrite operations. but here you can globally try to change the display style, because the section graphics listens to this. Goto settings > display styles. select the style forward or cut. Play with the two weight options. To see changes, apply "update view" first. Check the results.
Hatched Elements: I was happy I could produce the following: Set up an element template. assign a hatch distance and hatch angle (see help for details). Now every solid geometry which is cut through appears hatches automatically!
See screenshots section1.jpg (before), section2.jpg (after). Hope that works.
Does that help for your goal?
Bigean