2D Fillet joining two polylines

[jukkoo]

Hi,

Every time I fillet 2 separate polylines (regardless of the radius), Autocad automatically joins them into one polyline. Is there an option to switch this automatism off? So that the result is similar to lines fillet, so that I have 3 separate polylines, the two I started with and the arc as the third one.

I could just be using lines instead of polylines, you say, but unfortunately that is just not an option, they need to be plines.

 

Working on Autocad 2007 Full

 

Thanks

[ReMark]

it can't be done. move on. stop bitc*in around and start drawing with your hands. how do you like that polyline? n00b

 

Bad day at the office? I don't think any of that was called for.

[arhic]

sorry, you are right...

[arhic]

you can try NO TRIM option while using fillet. it will create arc between two polylines but it will not trim them or join them. downside side of this method is that you will have to trim the rest by hand.

[ReMark]

That's better. Thanks mate and welcome to the CADTutor forum.

[jukkoo]

unfortunately, if the radius is 0, the fillet command doesn't work at all...

[ReMark]

Why can't the polylines be joined?

 

Why do they have to be polylines and not lines?

[ReMark]

jukkoo wrote: "...so that I have 3 separate polylines, the two I started with and the arc as the third one."

 

This implies you have two lines with an arc between them. If that is the case then the advice given above by arhic does work. I tested it myself. Obviously it won't work if the fillet radius is set to "0" though. You must specify a radius greater than "0".

 

 

[jukkoo]

It is too difficult to explain, and you would probably think I was crazy and overzealous, so let's say this question is more my curiosity, than it is an actual problem.

[jukkoo]

the radius set to 0 is the situation that interest me most

[ReMark]

the radius set to 0 is the situation that interest me most

 

If the radius is set to zero then there is no arc. You mention there is an arc but you have a radius of "0"? Doesn't make sense.

 

Why don't you post an image.

[jukkoo]

I belive it could be useful to have that option (for example Join/No join), like there is Trim/No trim.

But I can see why have the programmers ignored it, since you do have the same result using fillet with simple lines. The result looks exactly the same, the only difference is that you have lines instead of plines

[jukkoo]

Ok, with the radius set to 0:

So that I have 2 separate polylines, the 2 I started with, and not one. If the radius is set to 0, the arc is not there so there is no third one, I thought that would be implied.

[ReMark]

I understand you have two separate polylines. Where is the arc located in relation to these two polylines? I'm imagining a polyline connected to one end of an arc followed by a second polyline connected to the other end of the arc. What are you doing?

[ReMark]

This is what I am referring to. For the sake of clarity one polyline is black while the other is magenta. The arc between them is blue. The polylines have not been trimmed yet but after they are I will still have three separate entities.

 

[jukkoo]

ok, I'm gomma try to explain

- I need polylines instead of lines because the lines do not have global width option

- I want them to be separate because I only want to be able to offset only one of them

- I know I can use break at point command to get this result, but I was just wondering if there was a way to speed things up with just one command (or option in the fillet command)

[ReMark]

I guess I just have mush for brains this morning.

 

My example above has polylines. Even the arc is a polyline.

My example keeps everything separate.

My example allows me to offset both polylines and the arc if I wanted to.

My example did not require the use of the Break command.

There is no way to speed things up with one command unless you use a custom lisp routine or, in newer versions of AutoCAD, the Action Recorder (for creating a macro).

[jukkoo]

yes, your and arhic's example works fine (with the trimming), but only for R>0.

It's ok, it's not that important, don't need to beat your head about it any longer Thanks anyway

[ReMark]

That's funny but I have an arc with a 1" radius (not 0 as you imply) that was put there using the Fillet command with the "No Trim" option. I think you must have something else in mind but you are reluctant to post an image here to better explain what you are trying to accomplish.

 

I began with two distinctly separate polylines meeting at a 90 deg angle. What did you use?

 

It's not that important any more? Congrats for solving the problem on your own. Care to share your solution with us or is it a state secret?

[jukkoo]

but I did post the image ?!?!

I dont get it, what's your problem? Are you messing with me? I explained it the best I can. Try and read all of my posts once more, I really cannot be any clearer.

I DON'T CARE ABOUT THE ARC, I WANT IT TO WORK WITH THE R=0!!!

look at the image I posted. once again...

http://img710.imageshack.us/img710/4804/2dfilletnotjoiningtwopo.jpg

that is how I would wanted it to work, instead if I fillet it the two plines join into one