I have been struggling for several hours and just can’t create this type of ceiling arc. Can anyone help me out with this one, please? These are the only results I was able to get.
Looks like a job for Solid Tools. Is that what you’re using? The one on the left looks generally correct in form if not exact in dimensions.
I agree with @RTCool and use Solid Tools or better, Eneroth Solid Tools or Bool Tools2 for this.
I made a “cutter” volume for the niche and used it to trim out the nice in the arched volume.
hello
remember you can also use photo match to have a (more) precise result
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Thank you all for such a fast reply!
@RTCool yes, I have been using solid tool with a cutaway part, but the issue is the missing sharp point that I highlighted in this picture
@DaveR the arc need to go from a curve to a point
@paul.millet I think that’s it. Could you please show me the a few steps on how did you get the corect shape?
Thank you all for the help
Your main ceiling curve is too shallow / too high and / or the geometry of the smaller arch is too high / tall.
Look closely at the geometry of Paul’s solids vs. yours.
@bmike yes, but it is from a CAD file and the file is from/ for an actual site (the photo from my original post) so I have to stick to those dimensions
Geometry is geometry.
Share the cad file and the model then…
Maybe the cad file is wrong?
I wonder if the ceiling is more of an ellipse shape than a pure arc.
Here is the CAD file along with the photo I got send with heights
1.dwg (374.2 KB)
I highlighted the room in question, but every room has those same details on ceilings. The “hluka 221” is the begining height of the arc, 409 is the highest ceiling point and 395 is the problematic arc height.
I uploaded the rest of the photos, maybe they will help. I wasn’t the one taking them on location so these are the only angles I have.
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Oh yeah, this is another room I will have to do, and maybe these angles are better. It is the room across the first one.
I suspect the main ceiling is more of an ellipse than a true arc based on a radius. It is even a bit flatter than in my model.
As to the nice point - I think there are 2 things happening - 1. The number of segments you model the curves with will affect how they look when they intersect and 2. I think this is a plaster ceiling so the craftsmen probably faired those interior corners out by eye once they got the lath / ceiling materials in place - and the intersections might be tilted a bit to look like that.
You could likely add a bit of geometry to make it a perfect point.
ceiling-test.skp (531.4 KB)
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That’s pretty good considering! Judging by the plan, the room doesn’t look square, and Match Photo needs something rectilinear as a reference to dial in a match. Actually, this might be a good prospect for Scan to Design, which I’ve only just begun to play with. To do that, you need to be there in person with SketchUp on a properly LIDAR equipped iPad. @kevin58 is the master of scanning a funky, out of square existing condition like this, but I believe he uses higher end scanners than just an iPad. How accurate do the results need to be?
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@bmike Wow, never saw anyone do the outlining like that… This is an eye opener. I will try to increase segments (the original I did were 24 since there are two more levels I need to do and imported it in unreal engine in the end) and see the result as you suggested. Also, thank you very much for the skp file and the time you invested into this.
@RTCool It’s an old house of a general that was built in 1745 so those arcs are original since the house is under the protection of the government as a monument, so minor alterations were alloved to preserve it’s original design. But I think there is wiggle room since my role is to create a virtual tour of it.
I would consider setting it up a bit differently if I were to do it again - basically make sure the segments have a proper midpoint to where the can intersect - and for the main elliptical shaped arc I would double or quadruple the number of segments used in the window arches when you make the cylinder then scale it to a more ellipse shape.
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@bmike Oh yeah, any pointer on the corner of the other room where two of those arc intersect? Do I need to create a ball shape or just rotate the same cutout shape? Thank you for all the help.
PS: any chance you could do a gif type of a video on how you created that shape you sent me?
I used Curviloft to stitch between the curve and the slope. It could be done manually or with several other extensions, too.
BTW, please update your forum profile. From your screenshots it’s clear you aren’t still using SketchUp 2020.
This is why engineers hate us.
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Any chance you could show me how to stitch those two?
I updated my profile
Never mind, I did it with curviloft like you said. Thank you