This seems to be an ongoing problem that sometimes occurs when new versions are released. But this time, the amount of image clipping when zooming in, is ridiculous. I constantly have to change the camera from perspective view to parallel projection to be able to zoom into a model. This effect very rarely occurred in SU2019
(MacBook Pro late 2018, 2,2Ghz 16GB RAM, SU2020.0.362.
Kindly share the model which exhibits the problem.
I’ve yet to find a model with ‘clipping issues’ that didn’t have modeling issues.
SU hasn’t recently changed how it uses openGL so the same model should behave the same in v19 as it does in v20…
your graphics card driver may have changed how it uses openGL, but again it should be the same in any version of SU on the same machine…
this is meant to be the best ‘official’ resource on the issue…
john
As John says, said another way.
Clipping Plane — SketchUp Sage
https://sites.google.com/site/sketchupsage/problems/other#TOC-Is-all-or-part-of-the-model-disappearing-
I think I seem to have figured out the problem. When checking the model before sharingTyberberg Hospital Roof Details Rev 7 SU2020.skp (12.2 MB) , I clicked the ‘Fix Problems’ button and ‘Purge Unused’ and voila … things seem too be a lot better, in fact, problem solved.
Thank you John!
There is a paid extension that fixes this issue, not sure why Trimble cant incorporate it?
With all due deference, there are larger issues.
A multitude of fractured (non-planar) faces.
Stray edges. Or as Mike Tadros calls them, Space Junk.
One of the most informative and entertaining sessions of 3DBC 2018
Does the setting anti-aliasing have anything to do with this perhaps. It was set at 4x, now set to 0x. Will check in the morning… getting close to pumpkin time here 
What is “this”? Is it this?
The most common reason for these display artifacts is that your model is very far from the model origin point or that the model itself is very large, containing, for instance, an imported CAD map.
Or you have been working in parallel projection and the camera has wandered far from the model.
Here’s an illustration of why parallel projection can mask the fact that the camera is far from the model. In this model I created a vertical red-blue plane rectangle to represent the view screen of the camera. Then I drew a cube at a skewed angle behind the screen along the green axis (in front of the camera). I created a guide line parallel to the green axis from each visible corner of the cube through the screen. Finally I traced the intersections of these guides with the rectangle to create the screen view that parallel projection would make.
Then I copied the setup and moved the cube farther away along the green axis. You can easily see that the presentation on the screen is identical. There is no perceptible effect from moving the camera farther away from the model or vice versa!
parallel projection.skp (38.6 KB)
Hi, thank you for your comment. Yes, the original model had an imported area map, which I have now deleted, in fact I cut and pasted my model into a new blank drawing, but still persists.
Thanks for the reply. Yes I have been using parallel, but do so reluctantly because of the clipping. It seems the problem is just getting worse. Seems I have to restart my model from scratch, even reluctant to do a cut and paste from the original…
I’d recommend you practice using perspective until it becomes natural. Issues with clipping and camera positioning are much more common when using parallel. Plus, zoom extents will usually restore a sensible camera location in perspective mode whereas it may make things worse in parallel!
Except for the text bug that was addressed a couple of versions ago, I don’t know why it is happening, but recently we have seen multiple topics on this forum where people working in parallel projection have encountered issues with a model because the camera somehow swooped away to the far reaches of the universe. When that happens either the model seems to disappear or rendering anomalies (“z-fighting”) involving distance from the camera begin to happen.
I can sympathize with those who stick with parallel projection while creating a model because I began my use of SketchUp the same way. It feels natural to anyone who got their first drafting instruction using orthographic drawings with pencil and paper (the pure 2D equivalent of parallel projection). In that 2D setting, there are definite advantages. You can measure lengths with a ruler so long as you stick to one of the primary views or isometric. Things that are directly behind a nearer object appear in their correct relative location.
It is much harder to do technical drawings in 2D perspective, where there is no uniform scale, parallel lines converge, etc. One has either to do much more complicated geometric construction or rely on artistic talent. And even then you can’t usually rely on sizes of things actually being how they look.
But when working in 3D, the mindset must be that you are looking at an object in the real 3D world, not at an intentionally distorted orthographic 2D drawing on paper. Let the software handle the tricky geometric aspects of perspective for you. Once you get over that hump, working in parallel projection starts to feel strange and its peculiarities annoying - e.g. the ability to measure lengths on the drawing using a ruler depends on the direction from which you are viewing the model.
Hi Mr Baumgartner, Thank you very much for your detailed response, I appreciate it very much.
I think I may have come up with a solution. In this particular model, I had imported a fairly large area dwg which seems to have caused the problem in the first place. I think either Box or monospaced mentioned something about this. I removed the offending map, and viola! things seem to be back on track.
Thank you, Box and monospaced for your assistance!
… but now there is another issue, which I mentioned before… regarding selecting a surface to edit the material. I’ll post another topic
I just noticed that on your website you are a SketchUp reseller and offer professional software training in SketchUp. This will definitely help your customers.
I used to be a reseller, but now living in South Africa, SU has opted to use only ONE reseller which has stunted me a little. (I have contacted them (iRender), but they are not interested in me being a reseller for them). Having to resort to full time architecture, and using SU in an ArchiCad office which has brought some benefits. I offer new and intermediate users some training, but this also has slowed down a lot.
SU has lots to offer, but in SA, most firms are so fixated on Revit, it makes the selling very difficult. I have more traction in firms that use ArchiCad, this in itself a far more superior software than Revit anyway
