Any way to slant a circle

Using Autocad LT 2002... Is there any way to draw a circle
then skew or slant it? A person doing some work for me
took a ellipse and tilted it but it is not the same as
a skew circle. They said autocad could not skew a circle.
Like if you took a box and pushed the top sideways to make
a parallelogram, and within that box there was a circle
and it skew along with the box. The result should not
be a tilted ellipse. Hope I am making myself clear
as I am not a cad expert.

 

A person doing some work for me

Admittedly not the best test and certainly not a rigorous mathematical
proof, but...

Quick checking in Photoshop, I'm not sure that you are correct. I think a
skew circle may well be an ellipse. At first I intuited that you were right.
If you don't _know_ that it is so, I suggest looking in to it.

 

A circle viewed on an angle is indeed an ellipse.
The question might be whether acad gives you a true ellipse or not.
I believe it has depends on the version, and very old versions
used to approximate ellipses with splines.

 

It may be the same if you can position it correctly but to skew
it, the bottom centerline needs anchored then skewed. If you make
an ellipse I don't know how you find the orignal centerline since
it will not be the same point as the lowest point touching some
imaginary axis.

 

I think what you are wanting is the iso snap feature. This is a
sub-command of the grid snap. It was made to facilitate isometric flat
drawings.

 

It may be the same if you can position it correctly but to skew

I get you. Yeah, I was only addressing the "is or is not an ellipse" part of
what you wrote. I was focusing on "make the shape" but you have a specific
need to "skew this circle" not "make some shape like a skewed circle". For
that, I'm sorry but I can't help you. You could approximate it with a many
sided n-gon and then stretching by different amounts to the side. That would
probably give you something that looked nasty and would take a long time. If
it is an ongoing need, it might be time to work out the math and write your
own (sorry, I totally couldn't help with the math). If it is a one off need,
you might be able to do it in Illustrator (or similar) and bring the shape
into ACAD.

I'm presuming that since I can't do it in ACAD it can't be done in ACAD LT.

 

I think what you are wanting is the iso snap feature. This is a

Good question, OP, _why_ are you trying to make this shape?

 

Uhhhh... I gotta go.... <runs away quickly>



hahaha Just kidding... Making a logo.

 

hahaha Just kidding... Making a logo.

So, you should be working in Illustrator anyway... ;-)

 

good old days of HAND drwing see the attached in jpg format

I had a drafting teacher who insisted that an ellipse _is_ four arcs. Not
"could be poorly faked with" but actually really and truly _is_. I stopped
listening to him and taught myself to draw.

 

An ellipse is 4 arcs. two equal arcs on the minor axis and two equal
arcs on the major axis

However here is something you can try for the slanting circle question

- DRAW a square made of ploylines. You can use the REC command
- Type PEDIT and select the square.
- Type S for Spline.
- Now click on the spline and stretch the grips to get the shape that
you want.

Visits my web site http://www.draftsperson.net/autocad/ for more
tips

Allan

 

No, it's not. An ellipse may be *approximated* by four arcs, but it is
*only* an approximation.
___

 

An ellipse is 4 arcs. two equal arcs on the minor axis and two equal

No, it isn't.

That works pretty good. It even gives the non-perpendicular axes that I had
expected when I did it in my brain (rather than the PShop experiment.)

 

If you don't mind can you tell me from what book your examples came
from.

Thanks

Patrick

 

What if you didn't want to use a spline?