topic Re: D openings not showing up in Elevation in Libraries & objects

D openings not showing up in Elevation

vistasp — Fri, 11 Apr 2008 14:02:31 GMT

I was getting inconsistent results with the "D SemiArch Opening 10" some time ago and had assumed I was doing something wrong at the time.

Now, after further exploration, it seems that four out of the six D Openings (Arch, SemiArch, Horseshoe and Ogee-Centered) are not correctly seen in elevation when viewed from one side but okay from the opposite side! Gothic and Saracenic, on the other hand show up correctly whichever way you look at them.

My library and AC are up to date and I've taken default values for making the screenshots (with a default template). Has anyone else faced this problem? It's probably something in the 3D script but I'm still a bit too raw at GDL to attempt a correction.

If it's any help, when the outlines don't show in elevation, neither do the hotspots.

Re: D openings not showing up in Elevation

Anonymous — Fri, 11 Apr 2008 15:18:24 GMT

Hello v i s t a s p,
I have inserted an instance of each one of those openings
in a wall and they display with no problem. I am using
the US version of application and the library. I tried
mirroring an opening about it's own centerline, putting
two instances of the same opening in the same position, etc,
but could not reproduce what you are seeing.
Peter Devlin

Re: D openings not showing up in Elevation

vistasp — Sat, 12 Apr 2008 02:18:38 GMT

Thanks for trying Peter. I think the IND library is the same as the INT one so maybe the error hasn't crept into the US library? As far as I recall, AC9 didn't give me this problem.

Re: D openings not showing up in Elevation

Anonymous — Sat, 12 Apr 2008 09:28:50 GMT

vistasp wrote:
it seems that four out of the six D Openings (Arch, SemiArch, Horseshoe and Ogee-Centered) are not correctly seen in elevation when viewed from one side but okay from the opposite side! Gothic and Saracenic, on the other hand show up correctly whichever way you look at them.

Hi Vistasp,

I'm experiencing the same problem here. I'm using INT version of the library, with the latest update.

Adrian Tudoreanu

Re: D openings not showing up in Elevation

vistasp — Sat, 12 Apr 2008 10:04:44 GMT

adytc wrote:
I'm experiencing the same problem here. I'm using INT version of the library, with the latest update.

So it's not just me then... Thanks Adrian, I was beginning to wonder. 😉

Ogee and Horseshoe are probably rarely used but Arch and SemiArch must be common. Has anybody with the INT library located the bug in the 3D script? Would love to learn what is wrong.

Re: D openings not showing up in Elevation

Anonymous — Sat, 12 Apr 2008 12:23:11 GMT

Hi Vistasp,

The problem seems to be the status code for the wallniches.
I've just changed "2+16" to "1+2+8+16+32+64+128".
It seems ok now...
BTW... I also turned of the edge of the base arch in the gotic one...
IMO it shouldn't be visible... But if you want it I can turn it on.
Hope it helps.

Re: D openings not showing up in Elevation

vistasp — Sun, 13 Apr 2008 03:24:17 GMT

Braza wrote:
The problem seems to be the status code for the wallniches.
I've just changed "2+16" to "1+2+8+16+32+64+128".
It seems ok now...

Hey thanks Paulo, not just for the updated objects but also for explaining what exactly was wrong with them. Will try them out once the weekend is over.

EDIT:
Ok, the weekend is over and I'm back like a bad penny.

Paulo, I tried reading up on status codes and while most of it still goes over my head, I thought "1+2+8+16+32+64+128" looked a bit extreme. Experimented a bit and found that "2+8+16" works equally well.

What I'm still unable to understand is why gothic and saracenic look okay with just "2+16" whereas the rest need to have the extra "8".

Awaiting enlightenment.

Cheers!

Re: D openings not showing up in Elevation

Anonymous — Tue, 15 Apr 2008 08:44:35 GMT

Hi Vistasp,

vistasp wrote:
...I thought "1+2+8+16+32+64+128" looked a bit extreme. Experimented a bit and found that "2+8+16" works equally well.

I always turn on all the status when there is something wrong in a code...
But you are right.... It works just with 2+8+16 !...
Now, and by the fact that you mention it works in some objects with just 2+16, I start to think that its due to some wrong mask code in the wallniches...
I can see some weird mask codes like 15+49 or something...
Unfortunately I'm a little busy at the moment, but by the end of the week I'll have a look at it...
At least it is working, right?

Re: D openings not showing up in Elevation

vistasp — Thu, 17 Apr 2008 10:12:02 GMT

Braza wrote:
I can see some weird mask codes like 15+49 or something...

Paulo you're absolutely right! The problem lay in the mask codes. I think they've been sorted out now (see attachment) but could you please check when you get some time?

BTW, most of them just required a "+16" to make them work.

Thanks once again for all your help.

Re: D openings not showing up in Elevation

Thomas Holm — Thu, 17 Apr 2008 10:57:33 GMT

Please put them in the GDL object depository!

Re: D openings not showing up in Elevation

vistasp — Thu, 17 Apr 2008 11:51:56 GMT

Thomas wrote:
Please put them in the GDL object depository!

I would love to Thomas. Will do that as soon as one of you gurus confirms that it is, in fact, all correct.

Thanks.

Re: D openings not showing up in Elevation

Anonymous — Sat, 19 Apr 2008 10:08:52 GMT

Hi Vistasp,

It seems to work fine...
One thing that I still don't understand is some mask codes like these:

wallniche 10, 1, 2+16,
0,0,1, C_-K_,
A/2,B-C, 79+16,
A/2-R,B-C, 900,
0,ASN(C/R), 4079+16,
0, B, 79+16,
R-A/2,B-C, 900,
0,ASN(C/R), 4079+16,
-A/2,B-C,79+16,
-A/2,0,13+16,
A/2,0,15+16,
A/2,B-C,-1

I can't find any information about them in GDL Ref Guide...

But as I said it works fine in 2D/3D and in curved walls.
Good Job Vistasp!

Re: D openings not showing up in Elevation

vistasp — Sat, 19 Apr 2008 16:36:41 GMT

Braza wrote:
One thing that I still don't understand is some mask codes like these:

wallniche 10, 1, 2+16,
0,0,1, C_-K_,
A/2,B-C, 79+16,
A/2-R,B-C, 900,
0,ASN(C/R), 4079+16,
0, B, 79+16,
R-A/2,B-C, 900,
0,ASN(C/R), 4079+16,
-A/2,B-C,79+16,
-A/2,0,13+16,
A/2,0,15+16,
A/2,B-C,-1

I can't find any information about them in GDL Ref Guide...

I have no clue for the most part either, Paulo! However, from the Cookbook and the GDL Reference I got this much:

1 > Show Base Surface
2 > Show Top Surface
4 > Show Side Surface
8 > Show Other side Surface (don't understand this fully)
16 > Show Base Edge
32 > Show Top Edge
64 > Show in Section/Elev

From that, I figured out the 13 [1+4+8], the 15 [1+2+4+8], the 16 (see above) and the 79 [64+15] but I'm stumped by the 4079 because it's most surely [4000+79] and I don't have any idea where that blooming 4000 comes from!

Would someone please enlighten us?

Re: D openings not showing up in Elevation

vistasp — Sun, 20 Apr 2008 07:32:03 GMT

The fixed openings have been added to the GDL object depository.

Re: D openings not showing up in Elevation

James Murray — Sun, 20 Apr 2008 11:09:45 GMT

vistasp wrote:
4000...?

Arc using centerpoint and angle, or a full circle. Preceding line must end in 900+s: Set centerpoint. Extremely common.

Tip (and I don't mean it in a do-a-search-n00b way 😞 If you search for '4000' in the GDL manual PDF, it's the only hit.

Do the same for 'WALLNICHE', the status codes are explained... I won't say clearly, but with experimentation it becomes clearer.

Status codes let you:

• Omit lines and faces on a per-side basis, offering you more control than you get with conventional slabs, e.g.

• Have better control of polygon math by explicitly setting arcs, centerpoints, tangents, etc.

Re: D openings not showing up in Elevation

vistasp — Sun, 20 Apr 2008 12:20:36 GMT

James wrote:
...with experimentation it becomes clearer.

Thanks for the pointers James. It will need a lot of experimentation before it becomes clear! 😉

Cheers.

Re: D openings not showing up in Elevation

Anonymous — Mon, 21 Apr 2008 11:36:44 GMT

Ok... I figure it out why those weird mask codes...

Its because wallnich has special mask codes different from prisms:

mask: Defines the visibility of the edges of the cutting body:
maski = j1 + 2*j2 + 4*j3 + 8*j4 + 16*j5 + 64*j7
j1: the polygon will create a visible edge upon entry into the body being cut
j2: the lengthwise edge of the cutting form will be visible
j3: the polygon will create a visible edge upon exiting the body being cut
j4: the bottom edge of the cutting form will be visible
j5: the top edge of the cutting form will be visible
j7: controls the viewpoint dependent visibility of the lengthwise edge

Its weird... but its right...