Projected lines display as section lines section views

SectionLinestyleIssue.3dm (435.9 KB)

Hi there,

I noticed something odd about how sections are displayed in a project I’m working on; I recreated the scenario in a more simplified setting below. Issue I ran into: the section view displays projection lines as section lines (both color and line thickness), whereas the plan view correctly shows the projection lines. I tried looking on the forum, but didn’t find a similar issue; if this is an existing topic, please let me know.

Scenario (see images) :
A single wall with one type of window. The window is shallow and much more narrow than the wall. In the plan view, the projection lines of the wall are correctly not displayed as section lines and thus remain thin. In the section however, the lines that are projection lines (looking at the edge where he void cuts through the wall) are displayed as section lines (in image visible as both color and thickness).

It appears that the sectionview treats these projected lines a bit differently (incorrectly).

I’m not sure if I am misunderstandig something or this is a bug of some sort. I would appreciate it if someone could help me out :slight_smile:

Best,
Nick


Perspective view to understand the scenario:

Planview (correct) :

Sectionview (incorrect) :

Hi @Nick_van_Dorp you are right. The print width of those lines in projection in the 2D section view are wrong. We will revise this.

If you try to print the wall and the window from a “real-time” section directly in the page layout, the print widths are correct though.

Thanks for the quick reply @fsalla ! It does display them correctly indeed in the real-time view.

However we choose to use the sectionview and planview to have actual 2d linework. We use section styles so that VA elements use their layer’s section settings.
A known limitation is that the print widths of section styles are not yet supported, so we use old-school color coding to define the line’s print width (and then with a custom print-script we override the colored lines with the correct line width). That’s why right now we do not use the real-time view, as the custom script needs actual 2d lines to read out.

But I’ve seen that for Rhino 9 this will all work properly (especially the Section Styles), and it will be a lot easier. Looking forward to future updates!

They are. VisualARQ provides a true Print Width for the section boundary of objects. You can assign them to objects and components in the styles dialog:

and also by object from the “Section attributes” section in the Rhino Properties panel:

Unfortunately, until Rhino 9, this Print Width can’t be managed properly by the Rhino Layers.

@fsalla Sorry I was not so clear; you’re absolutely right it’s possible to define the print width of the boundary in multiple ways (I did that as well in the file i attached). We just want to avoid doing that within each wall layer (or any element within a VA style for that matter), and try to keep it centrally driven (by layer, for example). But it’s great that the possibility is there to do it per element, offers a lot of flexibility.

Until Rhino9 arrives though, would it be helpful/possible if VA supported it’s own list of customizable ‘presets’ for section styles? This could be an alternative for the per layer approach.
So instead of choosing ‘custom’ or ‘per layer’ for the section syle (like in the image you shared), it would also list any presets a user added (something like that).

I am on the same boat, preferring layercentric setup.
There is a workaround using a custom linetype, that hopefully might fully work in future VA3 updates

best
alex

That’d be awesome and has been in our radar for a long time. But since this feature will be available in Rhino 9, we are not going to invest time in something that will be duplicated soon.

Thankyou @ng5_Alex ! That looks promising