topic Re: Roof Display Problem: advice needed in Modeling

Roof Display Problem: advice needed

Anonymous — Tue, 23 May 2023 12:46:24 GMT

I have a gable roof that is overframed onto another gable roof, but the eaves of this roof go under the roof that the ridge runs over (confusing??).

Here is a perspective to give you an idea. My problem is, on the roof plan, I want it to show correctly, with the eaves hidden by the upper roof, but the ridge running onto the upper roof. If I change the display order, the entire roof will display above the other.

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 15:45:08 GMT

Is there an "Actual view" setting for roof plans or something?

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 15:47:07 GMT

BTW, for some reason, the preview of the first image I've attached here is completely different than what I've actually attached. I've never even seen the preview image before...

Please click on the attachment to see the actual condition. I have no idea what is wrong with the preview.

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 19:37:34 GMT

Unfortunately it is not as automatic as you might like. You will have to change the display order, but with the upper roof following the line of the valley (i.e. not a continuous straight eaves line) you will get the right representation there, and draw the lower roof extents with a dotted line.

Steven wrote:
BTW, for some reason, the preview of the first image I've attached here is completely different than what I've actually attached. I've never even seen the preview image before...

Please click on the attachment to see the actual condition. I have no idea what is wrong with the preview.

That is very weird

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 19:43:48 GMT

Stuart,

Not sure what you're suggesting. Should I set the display order so it shows one portion of the roof correctly, then use a fill to cover the line of the roof shown incorrectly, and use a line to show the edge?

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:10:55 GMT

Hello Steven,
Have you tried enabling cover fills for the higher roof ?
I drew two roofs one at elevation 10 feet and another
at elevation 5 feet and drawn so that it was partially
covered by the higher roof. I selected the higher roof
and enabled cover fill and selected solid fill, cover fill pen
white, and hit OK. Now the lower roof is hidden where
it is covered by the higher roof.
Peter Devlin

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:34:59 GMT

Peter,

Hi. Yes, cover fills are enabled. My problem is one roof goes both over and under the other roof, so depending on which roof is on top, one part of it is shown incorrectly.

I've managed to remedy it by using a cover fill to cover the part not correctly shown.

Using 2D work to hide 3D problems seems to be my focus these days...

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:37:20 GMT

s2art wrote:
That is very weird

Yes I agree!

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:43:13 GMT

Steven wrote:
Stuart,

Not sure what you're suggesting. Should I set the display order so it shows one portion of the roof correctly, then use a fill to cover the line of the roof shown incorrectly, and use a line to show the edge?

See image below. Green outline is main roof, and follows line of valleys. Orange outline is intersecting roof. On right hand side all roof planes have cover fills on with white background, and lower roof is sent backward (or upper roof brought forward). Then just draw a line to indicate the outline below the main roof.

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:50:24 GMT

Hello Steven,
I re-read your first post and realized you have "over-framed"
the lower roof on to the higher roof hence no true framed valleys
and therefor the cover fill trick won't work.
Thanks,
Peter Devlin

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 21:55:27 GMT

Ah yes, the porch roof is overframed, so not true valley's as Stuart has shown.

Re: Roof Display Problem: advice needed

Anonymous — Mon, 07 Nov 2011 22:51:04 GMT

Re: Roof Display Problem: advice needed

David Maudlin — Tue, 08 Nov 2011 13:55:31 GMT

Steven:

I was able to get this result by using 2 Multi-plane Roofs, and using the Connect command to Trim the lower roof with the higher roof.

David

Re: Roof Display Problem: advice needed

Anonymous — Tue, 08 Nov 2011 15:42:18 GMT

David,

The upper roof is a complete gable roof, with no cutout where the lower roof comes in?

Re: Roof Display Problem: advice needed

David Maudlin — Wed, 09 Nov 2011 13:52:21 GMT

Steven wrote:
The upper roof is a complete gable roof, with no cutout where the lower roof comes in?

I was able to do this with a two step process:
1. A. Select side roof as Target
B. Select main roof as Operator
C. SEO operation: Subtraction
2. A. Select side roof
B. Connect (from context menu)
C. Select main roof
D. Select part of side roof to keep

I have found that experimenting with two operations can achieve results not possible with one.

David

Re: Roof Display Problem: advice needed

Anonymous — Wed, 09 Nov 2011 14:01:47 GMT

David,

Very interesting, thank you. I've used SEO's a lot but I'm unfamiliar with the other options in the connect menu. Which did you use for the second step? {when you say "connect (from context menu)"}?

Re: Roof Display Problem: advice needed

David Maudlin — Wed, 09 Nov 2011 14:15:05 GMT

Steven:

I think this easier to do in the 3D Window. Select the roof, then right-click to bring up the contextual menu, and select Connect > Trim Elements to Roof/Shell. This is a new way of working so you should take a look at the Help files, such as: Virtual Building > Construction Elements > Trim Elements to Roof or Shell > Trim Particular Elements: Manual Trim.

David

Re: Roof Display Problem: advice needed

Anonymous — Wed, 09 Nov 2011 14:21:10 GMT

Will do, thanks again!