Hello community.
I have problems when importing dwg from AutoCAD into Sketchup. Some of the rounded solids appearing as multisided polygons after importing dwg rather than smooth curves. Is any option I missing during dwg import? This also makes very visible during rendering process.
Here is the screenshot attached. Thanks!
Learn ruse the eraser tool and the soften/smooth dialog. Learn.SketchUp.com
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IT’s so dark it’s hard to see what you have going on. SketchUp will create facets on rounded surfaces. It’s the way SketchUp works. You can reduce the appearance of the facets by using more segments in each curve. For your CAD exports make sure edges are welded. Here’s a simple example. At the origin are two default 24-sided circles. At the near right I copied the first circles and exploded their curves into segments.
A screen shot from the resulting dxf export: The circles in the back look like circles while the exploded ones look like 24-side polygons.
And a top view of the dxf.
Thanks for the suggestion. This won’t work as smooth edges also make them less sharpy which I didn’t want.
Does Eraser with a modifier key work for you?
Will try that as well.
I don’t understand what it is you want, then. Either sharp or rounded. Show an example of what you are trying to accomplish.
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OP is importing from AutoCAD, so I’m guessing there is something going on with the geometry being written to the DWG and it is visible in SKP.
Ah… My mistake. Still softening edges should work. And/or deleting coplanar edges.
@szhytnikov no matter what, SketchUp will always represent curved surfaces with flat faces. No way around that.
Thank you very much to reply. Just to make it more clear, here is the cylinder with multiple polygon instead of smooth circle. This is dwg imported from AutoCAD.
Maybe. But if he wants things to look smooth and he’s only getting 24 or 48 sided geometry I don’t think there is any fix to that in SKP no matter how much you smooth it, especially going to render.
I haven’t used ACAD in probably 10 years, so I don’t know what the current export process looks like.
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SketchUp will never make it a smooth surface. It’ll always be made of flat faces.
You can recreate the elements in the model using more segments to get smoother looking curves. They will still be flat faces but it’ll be less evident.
Ok, thanks for that. That also doesn’t smooth during rendering is that right? I’m trying to use a studio version for rendering and it won’t look great with the multi side polygons. Is there any trick while rendering you know to avoid this look?
With more segments in curves and the edges between faces softened/smoothed the surfaces will appear smoother in renders.
Again, if your imported CAD file doesn’t have enough segments, you will probably have to redraw in SketchUp.
When importing AutoCad files, I have found that what happens to arcs, circles and polyline arc segments and faces based on them is a bit hit and miss, maybe dependent on the phase of the moon. Sometimes they get too many segments, sometimes too few. Sometimes smoothed, sometimes not. Import scale may be a factor. It would be a good thing to have some more user control to what the importer does.
This is a render from a model I made in SketchUp. No facetting because the edges between faces on the curved surfaces are softened/smoothed.
And another example:
And, to beat the proverbial dead horse, this is one I’m screwing around with today.
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Looks great. Ok, I’ll try then. Thanks!