topic Re: missing line contour in 3D visualization in Modeling

missing line contour in 3D visualization

alemanda — Thu, 25 May 2023 15:38:12 GMT

Hi,
I got the following strange bahaviour.
Some slab vertical coutour line are not visible. It seems to be happening when two adjoining edge makes a angle close to 180 degrees and the corner is not rounded of course.
Look at the attached picture.
It occurs both in Internal engine and OpenGL
How to solve it?

Re: missing line contour in 3D visualization

Katalin Borszeki — Wed, 28 Dec 2016 10:08:36 GMT

Hi! Different kind of elements have different rules regarding this issue dependent on their geometry generating algorithms in ARCHICAD. When the complementary angle of the sides of the slabs is larger than 11.78°, the line is visible. When it is smaller, the line is invisible (except if it is a contour line in that view). As I mentioned, these values can be a bit different for element types, for example walls and slabs differ because the algorithm that creates the visual behaves differently. Eg. a slab is based on a polygon, while the wall corner is made up of two wall elements...
I hope this clarifies the problem, thanks! k

Re: missing line contour in 3D visualization

alemanda — Wed, 28 Dec 2016 11:00:42 GMT

Yes, the explanation is clear but the issue remains because in the elevation if I have a slab with two joining walls on top I will have a corner with missing lines ...
What's the solution?
Is it possible to edit this 11.78 degree angle and make it smaller?

Re: missing line contour in 3D visualization

DGSketcher — Tue, 03 Jan 2017 10:59:57 GMT

The simple workaround would be to draw a morph line between the two nodes.

Re: missing line contour in 3D visualization

alemanda — Tue, 03 Jan 2017 11:05:52 GMT

thanks.
However I don't understand why that behaviour has been implemented ... I think It is a mistake in the representation according to what we all studied at school/university.
Eventually it could be an option, an editable option.
Isn't any setting in registry key for that?

Re: missing line contour in 3D visualization

Richard Morrison — Tue, 03 Jan 2017 19:10:18 GMT

The morph line is probably the easiest. Another solution is to split the slab at that point, and you will get the edge line in 2D elevations and 3D views, but will disappear in sections. However, you will have the split line in 2D plan views, unless you turn off the slab layer. I agree that this is something that should be fixed.

Re: missing line contour in 3D visualization

Katalin Borszeki — Wed, 04 Jan 2017 12:26:19 GMT

We are going to record a bug with this issue. It is truly not a good workaround to have to draw a morph line in such a case. Best, k