Unfold 3d Model
Marquez Feliciano
as long as they are closed objects they can even touch each other i would believe. Pepakura was meant for paper models yes but its very powerful in unfolding meshed files of higher complexity in a manner that its good for layouting or whatever you plan to do with it.
Being able to create flat patterns from modelled 3d designs would be a massive advantage for me. I currently have to export to a different machine to do this before sending for laser profiling and bending.
It is a simple polygon with straight edges. I then outset it (you see, by 0.1mm) and I extruded the outside to represent the sheet. I could also have done it in patch mode to have a just a surface. But I don't see any option to unfold it or to 2D pattern it as you mentioned.
Ok, now I get your point. I tried it, but I don't know how you could create a flat pattern out of several bodies. I could only if I made my sheet in one body, by selecting all line at once, but I couldn't select them all because it was causing some errors. If I made several bodies, the flat pattern would concern only one body.
Then, I had to flange it long enough so that it could intersect the planes "ProfilMilieuGauche/Droite" ("Left/RightMiddleProfile"). I could then do a split and remove the part on the sides. I find it very ugly and it would have been much more convenient if there was the same "To Object" extent option as for the normal extrude.
One more ugly thing I had to do was to add a point very close to the point at the tip at the back of the profile, so that I could make the spline line not closed, because otherwise, it would do a very ugly bend at that point, and it wouldn't have fit precisely enough the profile:
As you can see, there are two different faces, distant by about 1 micron. The tool body touch the sheet where it shouldn't, it should be perfectly tangent to it. That cause a big performance issue as it crashed everytime where I performed a flat pattern. It didn't crash before I made the cut.
I extruded the profil in patch mode. I exported the body in STL and I imported it on Blender. There is a pre-installed plugin called "Export Paper Model" that does exactly what I want. If someone is interested, there is a tutorial here.
I doubt that VW will be of much use here. The unfolding features are fairly rudimentary. The question is also what you intend to get out of the model. Getting very small and highly detailed unfolds may be ok if you intend to build a very detailed model that looks exactly correct in terms of real geometric shape. If so, prepare for a monster task. I quite often go with a different strategy, where I get reasonable decent looking models using a minimum of parts. This is ok if you want a decent looking display model without too much fuss. Instead of using a complex model, I rely heavily on image unfolding textures using very high quality texture mapping and UV maps. Unfortunately though, this is not possible to do with VW.
Hello, if this issue has been addressed before, I can only say that my English is not good enough to find it. My question is about my work in the solar industry where I have to create roof plans. Therefore, we first create a 3D model and export it to the layout, but with the created scenes, it is only possible to create a top view. Is there a way to unfold the roof so that the correct measurements can be shown from both sides of the roof? Otherwise, it will be distorted by the roof pitch. Thank you for your support. Kind regards.
So is it not possible to display both halves of the roof at their original size on LayOut, so that I can enter the correct measurements for the construction? This means showing both halves of the roof separately. Thank you for your quick response and help. Kind regards.
Just curious why you would want to do this? No contractor I know of wants to see the roof in this manner. Typically roof plans are shown as a 2d representation looking down with the pitch in place. Doing this will likely confuse most contractors.
Typically I wouldnt ask for help like this, but is there any way somebody can help me unfold an object and then send me the file? Im new to sketchup but im proficient with 2d autocad and i am struggling with this. I found a car model somebody did on the internet and im trying to extract the spoiler from that model. I want to unfold the model and then transfer that to autocad where i can scale it to fit my car. I can print it on large/multiple pages and transfer them to either cardboard or foam.Then I can make a foam plug and make a fiberglass mold. If somebody could help me out with this I would GREATLY appreciate it.
The unfold tool is more for flattening sheet metal for bending etc. Spoiler design is probably more like compound curves. I think you will have to plan on some type of lofting approach??
Save the file to a file sharing site like drop box and then share file and post url here or you can compress it ( zip) and maybe get under the forum limit
If I search 3dWH for sport car in returns 4000+ hits and you want us to search, come on at least give us name or author!
Here is the extracted spoiler for the 3d WH model. IMHO you can extract section profiles at what intervals you want to help with model making. There are some obvious 3d WH model issues as usual . Hope the are not a problem.car_mac1_spoiler.skp (42.1 KB)
I did not include the attatchment blocks just the trunk lid part.
You you needQtr panel spolier extension left side.skp (34.8 KB) to do is copy it out. The attached is for the left side you will have to mirrow for the right. You need to read abut axis control since you will have to make sure they are set ok for the mirrow. If you look close to above post the end surfaces\ faces are warped and probably should be changed. I did have some problem for this very reason so left them as is
The Sketchup unfold tool is a great way to turn your digital models into paper versions that can be used for presentations, visualizing, or just for fun! This is just one of the many tools you can use to speed up and simplify using Sketchup.
We would love to know what kind of shapes you are unfolding, let us know in the comments below! Still want to learn more? Check out all of Sketchup our tutorials here. You can find something for every level from beginning to advanced.
I have a protein structure (generated by i-Tasser) in PDB format. I would like to transform the 3D model into alinearized form representing only the secondary structure, as a long flat chain of secondary structures from C to N terminus along the linear backbone. Of course,contained helices and sheets should still be rendered correctly. So this might be called reversing the 3D-folding of the structure.
Background: I wish to create a little protein movie in Chimera using its morph tool, where the 2D cartoon structure morphs into the 3D ribbon structure. I tried to quickly flatten the structure manually, but that is not really convenient. I also have the i-Tasser output, if that helps.
I think it would be possible in principle to do this as discussed below. Thinking about it further, you wouldnt need to bother faffing about with parsing a DSSP file as chimera tracks secondary structure. You can use an approach like I did here:
For each atom, figure out if it belongs to a helix, or sheet, if not, set its dihedrals as The suggests below (assuming the maths in that link checks out). This I'm not sure how to do, but the good folks over on the UCSF User forum would know easily enough.
To generate a perfectly linear molecule, you'd need to find all the 'turn' regions (i.e. non helix and non sheet). I think you'd then need to set the phi angle to (for instance) 90, then the psi angle to -90 (or whatever the actual number is, but they'd need to be opposing I think).
I think this approach would work in principle, but you'd need to only alter the dihedrals for the regions which aren't a-helix or b-sheet, else the secondary structure would also be destroyed. I think it might be possible to parse a DSSP file for this information though.
Firstly, you can use PeptideBuilder in the Build Structure options (or without Chimera as you have already done). Just a matter of typing in the sequence it seems, but I'm not sure what happens with secondary structure in this case.
After trying this for a while, I had to give the ProteinBuilder up. For whatever reason, Chimera imports only the first 431 residues of my 500+ protein. I tried to find out why, but Peptidebuilder generated all residues, they just couldn't be imported. As I am running out of time, I will try to generate the peptide and try to set the angles manually for all residues in Chimera's structure builder.
Here's an approach, but far from perfect, though does produce a perfectly linear model (but can be quite slow). Uses the PeptideBuilder again. The angles are also not quite right, so the secondary structure is a bit off. There might be other options to explore in the peptideBuilder though. Maybe it helps?
Update, a slight improvement in SS can be obtained with using the angles 90 and -90, though there is still some rotation along the total length of the sequence, so the 'correct' angle for a perfectly linear molecule is likely slightly lower. I think the key to the molecule being linear however, is that the 2 angles must cancel out.
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