3D Truss Models

Re: 3D Truss Models

Postby medeek » Fri Sep 27, 2019 8:26 pm

pilou wrote:Does it working with curvated perimeter ?


I will need to give this some more thought.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 12:27 am

Even the most convoluted shapes will generate a roof so long as they are closed polygons:

truss_su538_800.jpg


However, I currently don't have a way to create a roof with inner polygons (holes), for example a donut shaped roof. I don't think this is critical right now but I will put this on my todo list.

Just fixed a major performance bug/flaw in the plugin not only for this module but actually for all the plugins. I will be releasing updates for each plugin including the Truss plugin that resolve this issue.

Currently working on the roof plane edit tool.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 6:46 am

Version 2.5.0 - 09.28.2019
- Fixed a critical performance bug that affects all the modules within the extension.
- Added the Complex Roofs toolbar.

*** CRITICAL PERFORMANCE UPDATE ***

If you are noticing a slowdown of the plugin performance after multiple edits to a roof or floor assembly, this fix will resolve that issue. This issue affects all previous versions of the plugin.

***

Also note that the complex roof toolbar is now active and will allow you to create a complex roof primitive (edit, move edge, edit outline and regen). The "Edit Roof Plane" tool is currently not yet available.

The roof primitive and roof outline are placed on separate layers, I will get into that more with a future tutorial video. I primarily released this update tonight because of the performance issue I discovered this afternoon with all of the plugins, but it also allows some of you more adventurous designers the ability to test out the new complex roof tools. Granted a lot remains to be done but at least I've got a start into it now. I will be focused on it until it is complete. After that I will attack the secondary roof module.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 7:13 am

An example of a roof primitive:



(Note, that I've assigned the material of the primitive to a different material and edited it so that it is transparent.)

View model here:

https://3dwarehouse.sketchup.com/model/ ... ive-Test-2

The roof outline is a separate group within the assembly, on its own "outline" layer. I've taken great care to make sure that the primitive is a "solid" so that the user will be able to use SketchUp's boolean (solid) tools to further manipulate these roof primitives if required.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 8:48 pm

All the magic happens here:



Nothing elaborate with my office or setup. The most critical is a somewhat decent computer that works well and the two monitors which allows me to open multiple ruby files at once when I need to.

So busy with the code that I still have not fixed the light fixture base (in the stairwell) that got knocked out of place a few months ago, I guess it all comes down to priorities.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 10:34 pm

Every roof plane will be able to be customized (or have the customization removed and return to its default state where it uses the global settings of the roof assembly).

The first and most important parameter is the Roof Plane Type: Hip or Gable

Not all roof planes will be able to convert to a gable configuration. If you look at a complex roof you should only be able to turn the roof planes that form a triangle (defined by three vertices) into a gable configuration. All other roof panes are going to be inclined or "hip". The other constraint is that the angle between the roof plane in question and its adjacent roof planes on either side must be orthogonal (90 degrees), otherwise you could potentially try and gable a roof plane on a octagon shaped roof, which would not make any sense. I think these two constraints will successfully limit a roof plane, as to whether it can become a gable end.

If a roof plane is customized and it is a hip its parameters are:

- pitch
- birdcut
- rafter depth
- overhang
- delta height

If a roof plane is customized and it is a gable end its parameters become:

- gable rafter option
- gable rafter depth
- gable overhang
- rake option
- rake width
- rake depth
- outlooker option
- outlooker spacing
- outlooker size
- outlooker orientation
- outlooker structural: Yes/No
- outlooker @ peak: Yes/No

P.S. A certain situation exists where the roof plane has 4 vertices might also be able to be a gable end, I will study this further.
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Re: 3D Truss Models

Postby medeek » Sun Sep 29, 2019 11:04 pm

Customizing roof planes gets a little complicated when combined with the roof edge move tool. The problem is that as you move roof edges you potentially change up the shape of roof, eliminating certain roof planes entirely and also changing some roof planes that potentially could be gable ends back to a hip configuration and vice versa.

With custom roof planes the move tool is going to have to get a bit more elaborate (more logic) so that a number of checks can be run to make sure that we are not trying to turn certain roof planes into gable ends that physically cannot be this configuration and also checking to see if certain roof planes were deleted.

The outline edit tool is even a larger problem in my opinion. How do you know which edges were retained after an outline edit? I think the default behavior should be to erase all roof plane customizations after the outline edit tool is used. I will need to give this some further thought.

Somehow I always knew that complex roofs was going to be a bit of a Pandora's box.
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Re: 3D Truss Models

Postby medeek » Mon Sep 30, 2019 11:46 am

First look at the Edit Roof Plane menu and tool in action:



Now that we are able to successfully select roof planes (roof edges) only the algorithm for gable end flagging remains. If a roof plane cannot be converted to a gable end the "Roof Plane Type" drop down option will be limited to only a "Hip" type.
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Re: 3D Truss Models

Postby OliVDB » Mon Sep 30, 2019 7:46 pm

Thanks for the thread and the explanation, that's extremely useful for us newbies! Especially since I got a task that's a little bit out of my league at work: do some 3D models for some of this Cannes real estate, while I'm glad if I can do something like an ice cream cone or a basic child drawing house...
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Re: 3D Truss Models

Postby medeek » Mon Sep 30, 2019 10:43 pm

Lots of little details when it comes to editing roof planes. First of all let's introduce an updated menu:



Notice that the roof plane status will tell you whether the selected roof plane is inheriting its parameters from the main roof or it has its own custom settings.

I've also added a "Clear Custom Settings" at the bottom of the menu so that one can return the roof plane to the default/global settings of the roof assembly.

Setting up all of this supporting infrastructure is somewhat tedious and certainly time consuming, however I do believe that a solid user interface that is both efficient and intuitive will make or break this module.

I intend for the edit plane tool to be persistent, provided that it does not affect stability. In other words you can keep clicking on roof planes and updating them without having to restart the tool by clicking on the icon in the toolbar.
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Re: 3D Truss Models

Postby medeek » Tue Oct 01, 2019 10:51 am

After struggling with the code for almost 8 hours I give you a fully parametric, asymmetric complex roof (primitive):



View model here:

https://3dwarehouse.sketchup.com/model/ ... -Primitive

I will now need to spend a day or two just trying to break it and I also need to enable the gable end option.

All of the menus and tools are working correctly now and seem to be quite robust. I will spend the next couple of days finishing up the roof primitive geometry (and testing). After that I would like to enable sheathing and cladding along with the roof labels and then I will probably release an update so everyone can test it out further and help me unearth any bugs I may have missed.
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Re: 3D Truss Models

Postby medeek » Tue Oct 01, 2019 11:15 pm

If you take a look at these two roofs you will notice that in the second case the lower ridge has degenerated into the steeper roof plane:





I didn't think it was possible but there are certain configurations where a standard straight skeleton will not generate the expected roof. This is a good example of that.

The complex roof module will not be able to automatically handle these types of situations.

This is where the secondary roof module will need to come in.
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Re: 3D Truss Models

Postby medeek » Wed Oct 02, 2019 12:12 am

Throwing all sorts of curve balls at this module to see if I can break it. Ultimately one can always break anything if you try hard enough, especially with something as complex as some of these roofs get.

Overall I'm pretty happy with it, I've addressed the issue with inside corners and now all is working as expected. Here is a recent test example of a roof with planes and pitches all over the place:



View model here:

https://3dwarehouse.sketchup.com/model/ ... lex-Roof-3

That being said there is always further testing that can be done. I'm sure there is some state I have not thought of that someone will get the plugin into that will break it.

I think it is time to move on to the gable end option. Once I get that working I think the utility of this new module will start to become apparent.
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Re: 3D Truss Models

Postby medeek » Wed Oct 02, 2019 1:02 am

I haven't quite started into the framing geometry just yet but I'm already one step ahead thinking about how certain junctions are going to need to be framed up.

Two hip rafters meeting at a ridge is pretty standard and I think I have that one handled however the junction where a valley rafter meets a flying hip and ridge is a little more uncertain. Any information on how some of these framing junctions should be made would be very helpful.
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Re: 3D Truss Models

Postby medeek » Wed Oct 02, 2019 8:52 am

Gable End option (within the edit roof panel menu) is now providing stable results:



View model here:

https://3dwarehouse.sketchup.com/model/ ... Gable-Roof

The roof primitive module for asymmetric complex roofs with gable and hip ends is now complete. Granted there is still room for additional options like dutch gable and half hips but I will leave those for another day.

I will now turn my attention to sheathing and cladding as well as the roof plane labels (name and sqft).

One thing I forgot to add into the overall roof parameters/options is anything for battens and cross battens. I can add it in if I receive some positive feedback on that feature, otherwise I will move on and start into the sheathing module first thing tomorrow.
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Re: 3D Truss Models

Postby medeek » Wed Oct 02, 2019 9:22 am

Version 2.5.1 - 10.02.2019
- Enabled the "Edit Roof Plane" tool, allowing for customized roof planes within complex roof assemblies.
- Added the gable end option for complex roofs within the "Edit Roof Panel" tool/menu.
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Re: 3D Truss Models

Postby medeek » Thu Oct 03, 2019 10:24 am

Version 2.5.1b - 10.03.2019
- Added logic so that customized roof planes can co-exist with the "Move Roof Edge" and "Edit Roof Outline" tools of the complex roof module.

Previously, moving roof edges would potentially shift the customized roof planes if certain roof edges were removed or consolidated. I think we have now achieved a fully parametric status with the various tools all working together.
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Re: 3D Truss Models

Postby medeek » Thu Oct 03, 2019 9:52 pm

After giving it some further consideration I’ve decided to enable dutch gable and half hip options for custom roof planes rather than leave it for later. If I include these options now it will force me to keep my other more specific algorithms general enough to handle all cases. The geometry calcs required to generate the roof primitive for these two other configurations is really not that difficult and actually provides a rather intriguing challenge.
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Re: 3D Truss Models

Postby medeek » Fri Oct 04, 2019 7:01 am

First look at half hip complex roofs:



(textures added to roof primitive for effect)

Notice the additional "setback" parameter in the menu. Also a half hip roof plane has both hip and gable parameters with the non-applicable parameters grayed out, as shown.

Similar to a gable end, the half hip can only be applied to certain roof planes, the plugin automatically restricts this placement.

The overhang of the half hip is governed by the gable overhang parameter, hence the overhang under the hip options is grayed out.

Now, on to the dutch gable...
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Re: 3D Truss Models

Postby medeek » Fri Oct 04, 2019 9:47 am

First look at dutch gable complex roofs:



(textures added to roof primitive for effect)

After I setup the system for the half hip this one fell out without too much trouble.

View model here:

https://3dwarehouse.sketchup.com/model/ ... mplex-Roof

Now it is time to move on to the sheathing and cladding, but first I need to add in some options for battens and cross battens.
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Re: 3D Truss Models

Postby medeek » Fri Oct 04, 2019 10:25 am

Version 2.5.2 - 10.04.2019
- Added the half hip option for complex roofs within the "Edit Roof Plane" tool/menu.
- Added the dutch gable option for complex roofs within the "Edit Roof Plane" tool/menu.
- The "Edit Roof Plane" tool has been made non-persistent to further improve stability.

(Click on image for animation)

ROOF_PLANE_EDIT1.gif
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Re: 3D Truss Models

Postby medeek » Sat Oct 05, 2019 8:41 am

First look at roof sheathing:



Roof cladding is a little more involved because of the cladding extension parameter.
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Re: 3D Truss Models

Postby medeek » Sat Oct 05, 2019 11:40 am

A few more kinks to work out in the sheathing module, but overall it is working better than expected and it wasn't nearly as hard to code as I initially thought it would be.

View model here:

https://3dwarehouse.sketchup.com/model/ ... ing-Test-1

Still a bit more work to do with sheathing when the dutch gable option is utilized. As you can tell from the model the sheathing is not tucking under the gable end overhang just yet. I will be addressing this tomorrow.
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Re: 3D Truss Models

Postby medeek » Sun Oct 06, 2019 12:59 am

The rebuild time on this model takes about 1.5 seconds. That is just with the roof primitive and sheathing.



The question is what will the rebuild time be like for a model/roof this complex when all of the rafters and other accoutrements are included?

View model here:

https://3dwarehouse.sketchup.com/model/ ... oof-Test-5
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Re: 3D Truss Models

Postby medeek » Sun Oct 06, 2019 7:42 am

Version 2.5.3 - 10.05.2019
- Added sheathing for complex roofs.
- Fixed the sheathing at the gable overhang for dutch gable complex roofs.



As shown in the image the sheathing with a dutch gable roof tucks up under the overhanging gable end.

View model here:

https://3dwarehouse.sketchup.com/model/ ... oof-Test-2

With this fix I think we are now 100% with the sheathing. I will begin the cladding next.
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Re: 3D Truss Models

Postby medeek » Sun Oct 06, 2019 8:41 am

I've been thinking about connecting roofs together, for example a gable roof connecting to another building where the roof meets the wall. For this type of scenario it might be useful to have an option for a cutoff end (gable end with no overhang etc... I'm not sure exactly what to call this.

P.S.

It's funny where my thoughts take me when I take a breather from the code, I guess even when I'm on break I'm still contemplating what needs to be done with these plugins. I just realized that I can enable one additional option in addition to all the other options (ie. gable, dutch gable, half hip). I will call this a "CONNECTION". Basically you will be able to connect one roof to another (secondary roof). However, rather than having a separate module for the secondary roof I just realized that with the connection option complex roofs can become secondary roofs, so an additional module is not necessary.

I will need to give this considerably more thought but I think this direction I need to go. There will need to be some options for connection type (another roof, a wall or a roof and a wall). I will need to explore the possibilities, this is going to get interesting.
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Re: 3D Truss Models

Postby medeek » Sun Oct 06, 2019 8:26 pm

If things weren't complicated enough with complex roofs, they just got a lot more complicated.

Rather than having two or three different types of connections I think it makes more sense to sub divide it into two additional options and then a connection is simply a connection. You end up with two additional options: TERMINAL and CONNECTION

With terminal it is very similar to a gable end however the roof just ends, no overhangs, no outlookers etc... This would be used when framing the roof up to a wall that is parallel to the roof edge. Theoretically this same type of roof could be achieved with the CONNECTION option however it would remove the requirement for selecting a primary roof (or solid) to connect to, and just simply end the roof in a squared off fashion.

The CONNECTION option is a bit more interesting. To get the results that we want we need to make this end treatment as general as possible. One could potentially connect to any group or component in the model or to another Medeek complex roof assembly. I will need a tool within a tool which allows the user to select the primary roof/object that they would like to connect to.

1. If the selected group is a Medeek roof assembly then the primary roof will also store that it is being connected to by a secondary roof, and the secondary roof will list the instance name of the primary roof it is connecting to.

2. If the selected group or component (must be a solid) is a non-Medeek roof assembly it will also store and list the instance name of the primary object that the roof is connecting to.

Here are shown a couple of possible connection scenarios:



Connecting to another complex roof at an oblique angle and below the fascia line.



Connecting to a non-Medeek roof (solid group).

To keep this option from completely spiraling out of control we must make the assumption that the only roof planes impacted by the connection will be the two adjacent and orthogonal roof planes that are either side of the connection roof edge (the connecting roof plane technically does not exist). I'm sure there will be users who try to subvert this requirement in certain design situations, so some logic to check this limitations may need to be implemented.
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Re: 3D Truss Models

Postby medeek » Sun Oct 06, 2019 10:06 pm

When you are connecting a roof into an arbitrary solid (ie. walls) you may end up with something like this:



View model here:

https://3dwarehouse.sketchup.com/model/ ... tor-Test-3

You will notice I've modified the roof primitive to emphasize the gable overhang. The key takeaway is that a roof connection should be treated like a gable end condition but with a certain amount subtracted away. That way if you do have a situation like the one shown, you will get your rakeboard etc... The trick of course is too make sure the logic is smart enough to identify these potential configurations and then adjust for them.
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Re: 3D Truss Models

Postby medeek » Mon Oct 07, 2019 12:02 am

First look at roof sheathing:



I've exploded the model so you can get a better idea of all the elements in the assembly.

Note, that the roof outline group will always be at the same Z height as your input points or (top of wall plate).

Due to overhangs and your roof pitch the roof primitive may extend below the outline, hence the reason I hide the roof primitive layer when initiating the edge move tool or roof plane edit tool.

For cladding I still need to do some work due to the roof extension parameter, this complicates the geometry slightly since the cladding is not based on the same face (edge points) as the sheathing is.
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Re: 3D Truss Models

Postby medeek » Mon Oct 07, 2019 7:37 am

First look at cladding with the cladding extension active:



As you can see asymmetric roofs tend to complicate things slightly but regardless the correct lateral extension is achieved (0.75"). I will need to go back into the other rafter roof modules and correct this feature, I don't think I have it quite right.

Because of the possibility of fascia and the cladding extension parameter, the cladding becomes a bit more involved not only for hip roofs but also along the rake edges of dutch gables, gables and half hips. All of these roof end conditions have unique solutions when it comes to cladding, and unfortunately it requires a fair bit of logic and coding on my part to make it happen.

The interesting thing about what I do is not so much about the programming, but more the manipulation of the data and the topological and geometric problems I am able to solve, with nothing more than a well written API, some ruby code, and at times some serious mental contortions. I have certainly become well acquainted with the Geom module in the SketchUp API.
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