Use Wipeout command with a Circle

[jgwallace]

Does anybody know of a way I can use the wipeout command using a circle? I am looking to wipeout around a circular call out and even though the donut command with the inside and outside diameter set at the same distance produces a circular polyline, it does not work with the wipeout command.

[ccowgill]

Wipeout only works with line segments, not arc segments, I dont believe there is a way to do a circular wipeout

[aledtaylor79401]

Try drawing a polygon with a large number of sides, then use the wipeout command to trace over it (Osnap set to endpoint)

It's not perfect but as you increase the number of sides, there will come a point where it will be good enough.

Aled Taylor
Design Engineer

[SRBalliet]

Use a non-plotting color (we use 255) to shade in the object or shape you want to wipeout, then use your display order to get the results you want.

[jgwallace]

Thanks, the polygon with a large number of sides worked.

[sinc]

Try drawing a polygon with a large number of sides, then use the wipeout command to trace over it (Osnap set to endpoint)


You shouldn't need to trace over it. The polygon command creates a polyline. Then just a create a wipeout from the polyline (<P>olyline option of the WIPEOUT command).

[Whitby5]

Use a non-plotting color (we use 255) to shade in the object or shape you want to wipeout, then use your display order to get the results you want.
What if you draw with white lines on a black background? The 255 colored hatch shows up as white.

[jaberwok]

What if you draw with white lines on a black background? The 255 colored hatch shows up as white.

It will appear on-screen but will plot correctly (assuming yoiu use white paper).

See this thread (http://forums.augi.com/showthread.php?p=1125297#post1125297) too.

[ccastelein]

Generally i draw a circle, then BREAK the circle in a very small spot, like a 1/16" length.. then draw a pline across the break and then PEDIT the small pline and join the cirlce to it...Voila a wipeout-able pline...

sometimes i have complicated furniture blocks that im placing over a floor pattern hatch,... and would like the furniture to wipeout the pattern...

havent tried this, but heres a thought... draw a circle around the block. then hatch inside the circle but not inside the block and ask it to re-create the boundry.. erase the circle and hatch and you should have a boundry that you can apply a wipeout too... hope this helps

ccastelein

[ccastelein]

Ooops,
My error... my above wipeout suggestion was actually for a masking polygon.. (which only masks other aec objects)

soo.. not as helpfull as I hoped it would be.

ccastelein

[Eddy Lucas]

My advice is: do not use wipeouts.
It gives me a black rectangles in my printed (hardcopy) PDF's.
So I had to remove all the wipeouts in the drawing that I didn't draw myself. (It is a difficult job to find all the wipeouts and to adjust the drawing so it is readable)

Here at the office it's a crime to use wipeouts!

[L.J.Oosterbaan]

please do NOT use WipeOuts, introducing bitmaps as if they are vector-objects is also a crime at my workspace, further down the pipeline of publishing they create havoc.
Better define a white pen (like colour 255 (AI) or 255,255,255 (TC)), draw a circle and hatch it with a "solid", assign the white pen to it, place it above or under objects with "Draworder".

[stuwenk]

I've done this work-around successfully for years. This is how:
Use the polygon command and select a large number of sides - say 96 or 128 - and inscribe it within your circle. Once created, you may want to offset it towards the center some miniscule amount - .005 or .01, you pick. Create the wipeout by selecting the polygon (erase the original polygon). Turn wipeout frames on. Send the wipeout to the back (draworder). I routinely include these in blocks I create as well - keeps me from having to trim and extend line segments to/from the circle. And doesn't affect measuring, because your line endpoints haven't moved!

[stuwenk]

I agree with the posts re: black blobs in PDFs where wipeouts are. If you print, then scan to a PDF - no problem. It's when you print/publish to a PDF that it's a problem. Regarding finding and deleting wipeouts: use SSX (ssextra - a selection set lisp routine), or use AutoCADs 'Get Selection Set', or 'Fast Select', select the wipeouts, then erase previous. None of this finding and erasing one item at a time nonsense.

[Whitby5]

Generally i draw a circle, then BREAK the circle in a very small spot, like a 1/16" length.. then draw a pline across the break and then PEDIT the small pline and join the cirlce to it...Voila a wipeout-able pline...
ccastelein

I tried & tried & tried, but could NOT get that to work. I keep getting a message that says I must use joined polyline segments, or something to that effect.. . . I give up. I'll just use the solid white hatch with the 255-color.

[SamuelAB]

Command: POLYGON
Enter number of sides <4>: 100
Specify center of polygon or [Edge]: *click center
Enter an option [Inscribed in circle/Circumscribed about circle] <I>:
Specify radius of circle: *click edge

Command: WIPEOUT Specify first point or [Frames/Polyline] <Polyline>:
Select a closed polyline:
Erase polyline? [Yes/No] <No>: y

DONE!

I use this for gridlines. As mentionned above, do not use if you make PDFs of the drawings. It tends to screw up, but test it before just to make sure.

[gfreddog]

There is also a LISP called C2P I got from CATALYST and it converts a selected Circle to a two-equal-arc-segment closed zero-width Polyline circle [Donut w/ equal inside & outside diameters], which can then be modified as desired [given width, etc.], since Pedit will not accept selection of a Circle.

[cadtag]

or, you know, just do it the easy way, and relegate WIPEOUTS to the dustbin of history, as a temporary kludge that always had problems and failed at critical points. do something that always works, and works for the guy who has to inherit your drawings down the road.

Just hatch your circle with a solid hatch, set to TrueColor 255,255,255, and an put your text on top of it. vastly better

[jaberwok]

One little tip that may occasionally be useful - when using HIDE, a circle will always act like a disc - like a round 3dface.

[nestly]

One little tip that may occasionally be useful - when using HIDE, a circle will always act like a disc - like a round 3dface.

I believe the circle also has to be at a greater elevation than the other objects in order for that to work.

[irneb]

I wonder why no-one's mentioned it: What about using the express tool's SuperHatch? It can "hatch" a wipeout into any shape, basically performing that very-short line-conversion of curves (including splines, arcs in polylines, and circles). You can even adjust the number of lines by specifying the maximum angle between each.

About the wipeouts going black in PDFs, that's also been discussed ad-infinitum. These days it doesn't seem to be such a problem any-more. Though if you still find it happening you've got one workaround (i.e. set colour to 255, I prefer RGB:255,255,255 though) and one alternative (i.e. use a solid hatch set to colour 255 / RGB:255,255,255).

[moroz_nastya650378]

I don't know, maybe someone already solve this problem, but I find this solution: Make curve shape using SPLINE, then convert it to polyline. That`s all. You have curve-shaped polyline with a lot of straight segments. Now you can make "curve wipeout". Cheers!

[dlilborn]

I know this is an old thread, but I suppose people keep looking for an answer to this issue. I know I did.
my solution followed advice here: I made a layer called WHITE HATCH, set it to color 255 (which is defined in my plot style as 250,250,250. I don't remember why I didn't define it as 255,255,255, but I think it had to do with that printing black......) . Then I hatched the circle with solid, and adjusted the draw order. Much, much easier than my previous technique of drawing zillions of segments along the circle to form a polyline. And, I, too, am wary of wipeouts, I don't like those images in my file.
thanks, all, for constantly chiming in!

[bhchar28341364]

There is an app in the app store called Borders N Holes that handles wipeouts with arcs. It will also create a block and automatically move the wipeout(s) to the back.