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Design forum

Where is this purple color coming from?

I am drawing an existing house, and cannot figure out where this purple color is coming from. It is clear that it is related to the surfaces on the walls, since I can override them with other colors. Right now the purple corresponds to the "GENERAL" material. But I have no purple pens or any other purple materials or surfaces that I can find. Nothing in 3D view filters, or renovation overrides. This is really my first project in 19. Is the GENERAL surface purple now? What am I missing?

Purple.jpg
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10
20 REPLIES 20

Okay, I tracked it down to the uncut line pen. I think there is a bug here, because the color is not updating properly. (I didn't have any purple pens. I did originally, but changed the color to black.)
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

Eduardo Rolon
Moderator
Check also your Filter and Cut Plane Settings to see if you don't have an override there.
eduardo rolón AIA NCARB
Another of the forum moderators.
Macbook Pro M1 Max 64GB ram
OS X 10.XX latest
AC25 US/INT -> AC08
Puerto Rico, BVI, Miami

Vectorworks 2022

My guess is that it is an override from the renovation filter.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Erwin wrote:
My guess is that it is an override from the renovation filter.
Thanks. That was my first guess, too, but that wasn't it. I also had checked Eduardo's suggestion, and it was set to a black pen.

My other hunch is that background processing may have gotten turned off somehow, and I will check after I get back to the office.
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

You say it's the first one in 19, from which version did you go up to 19 with this project?
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Erwin wrote:
You say it's the first one in 19, from which version did you go up to 19 with this project?
Jumped from 17, skipping over 18. I've been using AC since 1998 or so, though. (v 6.0)
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

DGSketcher
Rockstar
I had some objects which I migrated to a project where the surface material was missing, the image rendered the missing material surfaces with the outline pen. Have you checked you material assignments?
Apple iMac macOS Monterey / AC26UKI (most recent builds)

David Shorter
Expert
I get it when I'm using the current version, opening an old file and the texture is missing.
somethingWrongHere2.jpg
Archicad 4.1 to 26 Apple Silicon
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Richard wrote:
Erwin wrote:
You say it's the first one in 19, from which version did you go up to 19 with this project?
Jumped from 17, skipping over 18. I've been using AC since 1998 or so, though. (v 6.0)
I know you're a veteran , as you are posting here for many years, helping others.

Did you try to merge the surfaces with the new ArchiCAD 19 template? ArchiCAD18 introduced cinerender, which means they have redone all the materials (now called surfaces) to take benefit from the cinerender engine (it replaced lightworks). Some of the 'new' cinerender surfaces did not match with the old (17 and before) materials at all in the Dutch library/template. We had to redo our template completely with ArchiCAD18. I noticed things like whitewash finish turning into different colour material finishes too. There is, I think, a 'core' of say 50-100 materials that stayed the same like glass, bricks, wood, grass, water and then there is another batch of things that got changed, so there is no one to one ratio of similar surfaces.

Hope this makes sense.

If you are using the ArchiCAD19 library, for example, you would be missing textures from the ArchiCAD17 library, unless you redid the surfaces.

If you want to do a full overhaul, what I would do is: purge all unused surfaces with attribute manager, this should hopefully leave you with maybe 20-25 surfaces in use, at best. Import one surface with a high indexnumber and then duplicate all the surfaces in use, so they have a very high indexnumber. Delete and replace the original surfaces with the new duplicates. You should now have an empty register of the low indexnumbers used by template, now import all those surfaces with attribute manager. You can now delete and replace the old duplicates with something similar matching in the newly imported template surfaces.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Laszlo Nagy
Community Admin
Community Admin
In the Surfaces Dialog switch the Engine Settings field to OpenGL and then check the Texture settings. The Dialog currently shows settings for the Internal Engine.
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Erwin wrote:

Did you try to merge the surfaces with the new ArchiCAD 19 template? <snip>
Thanks for the detailed explanation, Erwin. In this case, I used a pretty clean AC19 file (from the GS AC19 residential template), and the walls did not have any surface textures assigned. I had changed the uncut outline from purple to black, thinking that this was the issue. After a significant time of working with purple walls in the 3D view, all of a sudden the walls turned to black. (I quickly applied some surfaces, of course.) That is why I am thinking the effect doesn't relate to missing textures, but rather an updating issue.

Your post is a good indication of why GS needs to focus on making version upgrades less onerous. This is just too much time to spend on an annual basis, and one reason why people stay with older versions.
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

Well, with these kind of big updates (from 17 to 18 ), we ussually only start new projects in the new version, there is no reason why you can't work in 17 or 15 etc. We hardly ever move projects from one to the next version if it means tweaking things.

19 to 20 doesn't seem to give any huge problems, but we'll know come september when the NL release is coming.

18 to 19 was no problem at all.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Anonymous
Not applicable
Richard wrote:
I am drawing an existing house, and cannot figure out where this purple color is coming from.
It is coming from missing material of a wall (in your case, but can be any object, really). It does not have to do with transfer from AC17 to AC19. Same thing happens in all ARCHICAD versions without any transfer.

Just follow along (to the tune of "This Is the House That Jack Built"):
  • Your original wall (object, column, beam... etc.) had a Building Material assigned to it (in your case — in AC17, but it has nothing to do with versions).
  • The Building Material, in turn, had a specific Surface assigned to it (naturally, as all building materials have Surfaces for 3D and Fills for 2D cuts).
  • The Surface assigned to Building Material assigned to the wall (object, column, beam... etc.) in question had a Texture file signed to it (like many Surfaces do)
Now... if a Texture file is missing (or, one logical level above, the Surface containing Texture is deleted, or even one more logical level above — the Building Material is gone).... Then ARCHICAD has nothing to represent the 3D appearance of an object.
Short of, of course, as you already found out yourself — its last resort (the thing none of us can delete, only reassign...) — Countour Pen under "Countours" tab (you would not want it to represent your object with some odd thing line Cut pen, right?). 🙂

Just reassign any existing Building Material to that wall (object, column, beam... etc.) and everything will be back to normal. You can track the issue by following the bread crumbs: Building Material -> Surface -> Texture -> Countour Pen.

Usually happens in ARCHICAD version 17 and above if Surfaces linked to Building Materials get deleted without selecting "assign another material" option in the deletion Dialog.

File cleaning (for template) can cause this to happen. Happens to the best of us.

Anton wrote:
Richard wrote:
I am drawing an existing house, and cannot figure out where this purple color is coming from.
It is coming from missing material of a wall (in your case, but can be any object, really). It does not have to do with transfer from AC17 to AC19. Same thing happens in all ARCHICAD versions without any transfer.
Actually, no. It was caused by accidentally having overrides in the surface materials which were set to GENERAL. I found out that in such a case, ArchiCAD will use the color of the Uncut Outline Pen to color things. (I'm not sure how far this behavior goes back.) Setting the surface to any material but GENERAL, or turning off the surface overrides altogether (therefore using the building material), fixed things.
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

Anonymous
Not applicable
Richard wrote:
Actually, no. It was caused by accidentally having overrides in the surface materials which were set to GENERAL. I found out that in such a case, ArchiCAD will use the color of the Uncut Outline Pen to color things. (I'm not sure how far this behavior goes back.) Setting the surface to any material but GENERAL, or turning off the surface overrides altogether (therefore using the building material), fixed things.
You will see this behavior a lot, so I would like to give a bit of explanation.

I can't recall any of the Surface materials called "GENERAL" in any of the out-of-the-box templates in any of the localized versions. US version of ARCHICAD, I think, has has materials called "Generic - Walls Interior" and "Generic - Walls Exterior", but that is as close as it gets.

So, the material you referring to is a custom-made material in your specific template.

This custom-made "GENERAL" Surface material you have trouble with used to have at some point a texture file attached to it (Texture tab of the Surface Settings dialog box), but now — it does not. Most likely because the texture image itself was ether deleted or moved from the library path on your computer.

Now, every 3D element in ARCHICAD stores default (last used) values for Surfaces related to that 3D element.

When any texture image (the core attribute of any object in ARCHICAD's 3D view) is gone (no matter where it is missing from, a Surface material or Building material), ARCHICAD will revert to displaying any 3D element with missing textures in the only reliable way it can — by Contour Pen. Hence the color. In your case — purple. But it can be any other color. ARCHICAD Objects that are missing textures will, by default show up in 3D as green (default template Contour pen/color for objects), windows and doors with missing textures will be shown orange for the frame and opaque blue for glass... and so on.

Hope this helps.

Barry Kelly
Moderator
Anton wrote:
I can't recall any of the Surface materials called "GENERAL" in any of the out-of-the-box templates in any of the localized versions.
It is the default surface material for when no other material is applied.
It has the index number '0'.
It is the very first material in your material list.

I think as mentioned before when used on a wall surface the 'general' material adopts the uncut line pen colour of the wall (see image).

Barry.

One of the forum moderators.
Versions 6.5 to 25
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Anonymous
Not applicable
Barry wrote:
It is the default surface material for when no other material is applied.
Thank you, Barry.

I completely forgot about that odd GENERAL material you can specify in GDL, select in overrides, but can never find, select, edit or modify in Surface Settings dialog window as a regular surface...

True to all of the above GENERAL material does not have any texture assigned to it and thus is rendered in 3D with a Contour pen related to specific element it is assigned to. Just worth a note that the same thing will happen if the texture is missing from any other material.

Barry wrote:
Anton wrote:
I can't recall any of the Surface materials called "GENERAL" in any of the out-of-the-box templates in any of the localized versions.
It is the default surface material for when no other material is applied.
It has the index number '0'.
It is the very first material in your material list.

I think as mentioned before when used on a wall surface the 'general' material adopts the uncut line pen colour of the wall (see image).

Barry.
Barry,
Thanks so much for taking the time to put together this excellent explanation.
Richard
--------------------------
Richard Morrison, Architect-Interior Designer
AC25 (since AC6.0), Win10

Anonymous
Not applicable
Hello I'm having trouble with my 3D view settings. Every time I go to it after updating my program to Archicad20 it show s in all purple and black checker pattern. Is there a way to fix this?

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