Indistinct face intersections

archturn

@dave r said:

Probably a bunch of components you'd made but deleted? Or some large imported image? Go to Window>Model Info>Statistics and click on the Purge Unused button.

Yes bunch of components

test.skp

Dave R

I saw it too. I think it is something related to clipping. The camera is set to Parallel Projection and is also set to be at a long distance from the model. If you switch to Perspective it looks like the model disappears. Zoom back in on the corner of the model and then switch back to Parallel Projection. It doesn't happen then.

archturn

@dave r said:

I saw it too. I think it is something related to clipping. The camera is set to Parallel Projection and is also set to be at a long distance from the model. If you switch to Perspective it looks like the model disappears. Zoom back in on the corner of the model and then switch back to Parallel Projection. It doesn't happen then.

Dave
What is "clipping"?

Dave R

It's basically when some of the model is behind the image plane of the camera. There are several things that cause it. It is more common when the camera is set to Parallel Projection and it commonly happens when the model is very large (geographically), when the model is located at a substantial distance from the origin and/or when you zoom in on a small part of the model.

archturn

@dave r said:

It's basically when some of the model is behind the image plane of the camera. There are several things that cause it. It is more common when the camera is set to Parallel Projection and it commonly happens when the model is very large (geographically), when the model is located at a substantial distance from the origin and/or when you zoom in on a small part of the model.

Thank You

Dave R

Any time.

TBH, I don't know if this qualifies as a bug or it's just the way it is.

archturn

@dave r said:

Any time.

TBH, I don't know if this qualifies as a bug or it's just the way it is.

I guess though I'm curious why it never happened before a few months ago. In fact , the last time you you helped me one on one I mentioned it to you. It had just started shortly before that time.

Dave R

I guess I don't know. I almost never see it but I don't tend to use Parallel Projection while I'm drawing except for once in awhile to make selections easier. It doesn't tend to show in Perspective view.

thomthom

I generally find that parallel view often produce clipping glitches.

archturn

@thomthom said:

I generally find that parallel view often produce clipping glitches.

Thanks
It's good to know it's not a problem inherent to my machine.