CLIPPING VIEWPORTS

[nelsonrocha47]

does anyone know how to either clip a viewport with another one so that it blocks out the background. I have a small viewport inside a larger one but want to white out the background in the small one so the lines from the larger one don't appear at all within the small one. Wow, that sounds a little confusing. Hope someone out there is pickin' up what I'm puttin' down.

[CarlB]

You could make the larger viewport a 'polygonal' viewport, that has a cutout where the smaller viewport overlays it. At some point the larger viewport wraps around the smaller, buts together, to give a continuous view.

Kind of hard to describe in words, a picture would explain it but no time for that right now...
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Here's another way to do it, posted by Cad64 in another forum:

This is what I would do:

Create a WIPEOUT, in paper space, over the area I want to block out.
Move the table from model space to paper space, scale it down and position it over the Wipeout. Be sure to turn off the wipeout frame after you get everything set.

[spittle]

I need some help with viewport clipping. Basically I need some kind of background mask behind my circular viewport so that you can't see the parts of underlying viewport that lay beneath the circular viewport.
I'm not able to draw a circle on the underlying viewport and use WIPEOUT because apparently it won't show up on older versions of AutoCAD.
Currently when using viewport clip i've only managed to clip everything outside my circular viewport on the underlying layer.

any help would be appreciated.

[riga]

To get such a viewport I usually start from scratch.
In the layout I draw a rectangle of the dimension of the main viewport that I need and then a circle positioned where I to create a "hole".
Then i transform the rectangle and the circle in 2 regions (command _REGION) > at this point with the command _SUBTRACT I subtract the circle from the rectangle and I obtain a single region which is a rectangle with a "hole" and at now I only need to transform it in a viewport:
_-vports > Object > selecte the region > done!

Now when needed you can place a circular viewport in the "hole", as this is what you were trying to do (if I get you right)

[Tiger]

Spittle - please start a new thread for a new question!