Jump to content

# Roof holes - what is the logic for "square cut?"

## Recommended Posts

When I edit a roof face to create a hole and select "Square cut miter," the resulting 3D hole bears no obvious relationship to where I cut the face, at either the top or bottom planes of the roof. The sides of the hole align, but the upper and lower edges do not. Does anyone know how to predict where the hole will be?

Note to NNA: the way this ought to work is that boundaries in my 2D edit space would mark the upper edge of the hole, similarly to a square-cut eave.

#### Share this post

##### Link to post

In VW 10.5, the hole in the roof plane registers at the bottom surface of the roof plane object.

#### Share this post

##### Link to post

Robert, in working on this further I discovered that what you have said is normally true. The exception proves the rule, however. I have a roof face with a modified eave edge for some bay windows, and in that object the hole edges do not align normally. I could send you a file containing that object if you would like.

[ 02-06-2004, 06:10 PM: Message edited by: P Retondo ]

#### Share this post

##### Link to post

Send it. I'd like to see it. I don't know what you mean by "modified eave edge". Have you done a solid subtraction or the like?

#### Share this post

##### Link to post

I changed the eave profile by editing the polygon in roof plane edit mode.

#### Share this post

##### Link to post

Robert, did you get the file with the roof object I sent you, and if so, do you have any comment?

#### Share this post

##### Link to post

There is a logic, believe it or not. My misunderstanding was that I thought you had square cut eaves as well. The "magic plane" for a roof depends on the eave shape. Square-cut eaves use the bottom plane, and double-cut eaves (such as you had) use the plane defined by the intersection of the horizontal and vertical cuts at the eave. That is where the hole in the defining plane will be registered.

#### Share this post

##### Link to post

I just discovered this "feature." I am working on a roof that I would like to have vertical cut eaves (so that I can hang gutters on them) and square cut holes (so that I can put skylights in. Unfortunately, the "logic" used by VW seems to make that not really possible. I really don't understand why the 2d hole representation on a roof would be based on the bottom face. The roof is never viewed (in 2d) from the bottom.

I'm also a little surprised that this behavior has existed since 2004 and NVW hasn't fixed it.

Is there a work-around that would allow me to do what I need to do here?

#### Share this post

##### Link to post

Here's a quickie workaround:

Once you've made your roof object (including cutting the holes if you like), go to a 3D view and Enter Group. Select All and Copy. Exit, then Paste in Place (after deleting your original roof.) Now instead of a single Roofer object, you will have a number of Roof Faces. You can change Roof Faces to have a vertical eave cut and a square hole cut.

rob

#### Share this post

##### Link to post

Robert, I'm not working with a roof object. I'm already working with roof faces.

## 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.

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.

×

• KBASE
• #### MARIONETTE

×
• Create New...