Each girder will break up the roof outline into zones. Then using a combo of boolean subtraction and intersection we should be able to generate this as a starting point:

The blue shaded truss outlines are the girders, the purple shaded are the trusses requiring a further subtraction step to make the correction for the valley truss sets, notice the third purple truss from the right.

Basically I'm walking you through my algorithm for generating the truss geometry data so I can then draw each truss. As you can see this is not a trivial process. Lots of steps and lots of "edge cases" that can potentially trip it up. That is what I mean when I say the devil is in the details. However if the basic algorithm is sound one should be able to add in logic to deal with the issues and in the end you end up with a robust piece of code. These are the kinds of things that keep me up at night.

Based on these slices we should be able to extract the key geometric points that define each truss and then send that data to the separate truss "draw" algorithm which sorts out all the messy details on how to place the webs, plates and all that fun stuff.

You do realize that the Medeek Wall plugin can operate in "No Framing" mode, all of the internal framing in a wall is replaced with a simple solid group. I think I put out a video explaining this about a year ago.

I am curious though to see how your extension works with interacting walls (ie. corners and tee intersections).

Version 3.8.2 - 05.17.2026

• Cleaned up the filed and folder structure of the complex roof module.
• Enabled the truss template in the complex roof module.
• Added a "Roof Family" parameter into the draw and edit menus of the complex roof module.
• The complex roof edit menu now displays and allows configuration of custom roof planes.

Version 4.5.6 - 05.25.2026

• Enabled presets for beams.
• Enabled presets for in-wall columns.

Version 4.5.8 - 05.30.2026

• Added a curved stair option into the stair module.
• Added two new parameters for curved stairs into the draw and edit menus: Inside Radius, Curve Direction.
• Enabled treads, risers and framing (primitive) for curved stairs.

Tutorial 87 - Curved Stairs (9:20 min.)

I've been working on close stringers for curved stair cases. The circular variety is pretty much figured out but the elliptical variety still needs an instantaneous adjustment to the stringer depth since the pitch angle of the stairs (slope) is constantly changing. The geometry of a 0.9 eccentric ellipse shows off this distortion quite well. I will hit it again tomorrow and see if I can't figure out a more accurate algorithm for these stringers. Sometimes I enjoy a good challenge, but this one has certainly had me scratching my head a few times already.

After mucking around with the follow me API call and a few other algorithms I decided to strike out on my own yesterday, and with a little help from ChatGPT and quite a few iterations I was able to finally generate the closed helical stringers. Using the same principle and by rotating the profile I am now able to generate a similar mesh for the handrails. These are high poly but it does look great and we now have eliminated the twisting issue that I had never resolved using other methods. So a major step forward.

Version 4.6.0b - 06.06.2026

• Added handrails to curved stairs.
• Fixed a bug with labels for railing labels with metric templates.

Version 4.6.2 - 06.10.2026

• Added balusters and baluster shoes for all curved stair assemblies.
• Added separate baluster spacing, offsets and quantities for inner and outer handrails of curved stair assemblies.

With circular stairs it is possible to carefully control the spacing of the balusters so that a specific number of balusters lands on each tread (two on the inner and three on the outer). However with elliptical stairs the tread arc length may vary significantly so this may or may not be as controllable. I may need to come up with a different way to space balusters on elliptical stairs.

Note that in the second screenshot where the balusters are attached to the closed stringer this is not an issue.

Each side can be adjusted separately with the addition of the six new parameters within the Curved Stair Options sub-menu. This level of granularity is required for curved stairs at the expense of making the menus a bit longer.

It appears that I have handrail fittings mostly working now for both circular and elliptical curved stairs. However just as with the balusters we will need a separate handrail ext. for top and bottom and a rail drop for each side (inner and outer handrails). This means another six parameters in the curved stair menu. Due to the asymmetry or nature of these curved staircases there is really no way around it.

Version 4.6.3 - 06.14.2026

• Enabled open treads for curved stair assemblies.
• Enabled handrail fittings for curved stair assemblies.
• Added six additional parameters into the curved stair sub-menu for handrail extensions and upper fitting rail drops.
• Enabled handrail posts for curved stair assemblies.
• Enabled OTP, CUT, and VERTICAL (PTP) handrail options.
• Added a vertical offset parameter for top posts.