topic Re: arc tangent to two arcs or circles in Modeling

arc tangent to two arcs or circles

Anonymous — Mon, 13 Jun 2005 08:15:32 GMT

How can be done an arc tangent to a line and an arc or circle, or maybe just tangente to two arcs or circles? Should I revisit my geometry books? They're full covered with dust. mmmmm

Re: arc tangent to two arcs or circles

Petros Ioannou — Mon, 13 Jun 2005 08:27:49 GMT

I believe Archiruler from Cigraph will answer all your questions.(both geometry and texture fills).
visit : www.cigraph-store.com

HTH
Petros

Re: arc tangent to two arcs or circles

__archiben — Mon, 13 Jun 2005 08:31:16 GMT

two topics in the 'tips and tricks' forum:

http://archicad-talk.graphisoft.com/viewtopic.php?t=485

and

http://archicad-talk.graphisoft.com/viewtopic.php?t=486

(it's worth doing a search sometimes )

~/archiben

Re: arc tangent to two arcs or circles

Anonymous — Mon, 13 Jun 2005 08:48:15 GMT

To Ben: I'm looking for a circle, not for a line. And the links are very similar to what I've found in my geometry book. (i've had to clean the dust). And really, I think both things should be done within Archicad with object references

To Petros, I think Archiruler can't solve a circle tangent to two circles, I tried but I couldn't, maybe I miss something. I'll look better.... don't know about fills with textures, but I'll look too

Thanks for all

Re: arc tangent to two arcs or circles

__archiben — Mon, 13 Jun 2005 08:53:56 GMT

Rogelio wrote:
To Ben: I'm looking for a circle, not for a line.

oops

should've read your question, eh? sorry.

~/archiben

Re: arc tangent to two arcs or circles

Fabrizio Diodati — Mon, 13 Jun 2005 09:57:34 GMT

Rogelio wrote:
I think Archiruler can't solve a circle tangent to two circles, I tried but I couldn't, maybe I miss something. I'll look better.... don't know about fills with textures, but I'll look too

The attached image shows you where these commands are located in the ArchiRuler 2.0 palette...

Friendly
Fabrizio

Re: arc tangent to two arcs or circles

Anonymous — Wed, 29 Jun 2005 18:54:00 GMT

Here is the geometric method I use to get a circle tangent to two other circles. It takes a few clicks, but its not too bad once you get used to it.

Basically, you striike two arcs and place the new circle at the intersection.

The first arc has radius = (new circle radius) + (radius of circle #1), and the arc is centered on circle #1.

The second arc has radius = (new circle radius) + (radius of circle #2), and is centered on circle #2.

[/img]

Re: arc tangent to two arcs or circles

Anonymous — Wed, 29 Jun 2005 20:52:28 GMT

Karl,
That works very nicely.
Thank you for the geometry lesson.
Peter Devlin

Re: arc tangent to two arcs or circles

Anonymous — Fri, 30 May 2008 10:36:41 GMT

the Archiruler suggestion was spot on. I too wanted to draw a circle tangential to two circles. it is very very easy with Archiruler at ones disposal. I have introduced it to my firm and we will be looking purchase more copies.

welldone fabrizio.