topic Re: tan from line + tan from circle + radius (tan tan radius) in Modeling

tan from line + tan from circle + radius (tan tan radius)

narchi — Fri, 21 Oct 2022 14:27:42 GMT

I am trying to do this in Archicad. To create a circle (the big one in the picture) from the tangent from another circle (magenta) and a line. Then give a specific radius manually. Is this possible?

Re: tan from line + tan from circle + radius (tan tan radius)

Hmooslechner — Sat, 22 Oct 2022 11:50:32 GMT

Drag this into Archicad:

https://bimcomponents.com/GSM/Details/24120

Its parametric.

Re: tan from line + tan from circle + radius (tan tan radius)

narchi — Sat, 22 Oct 2022 21:16:16 GMT

Thanks and interesting! But not sure how to use this in this case. Not sure how to place the circle component so that it is tangent to the curve and the mid line

Re: tan from line + tan from circle + radius (tan tan radius)

Hmooslechner — Sun, 23 Oct 2022 05:30:51 GMT

What should Your picture show us? a street? Or a wall with middle-baseline?

If it should be a street - why 2 curves rather than one?

My object allows You to find connection-lines between 2 Circles on their tangents - outside and in X-form inside.

In Your case - the X - connection should work.

The center of Your circles always are on the perpenticular lines to your Axes...

Re: tan from line + tan from circle + radius (tan tan radius)

narchi — Sun, 23 Oct 2022 11:13:16 GMT

It is a street. Here is the different steps of how to create it in AutoCad

I think it has to have two curves because the streets are not parallell.

It is explained in the second part here https://www.youtube.com/watch?v=yhfC2OcbNno&ab_channel=MarkSadler

Hope this helps

Re: tan from line + tan from circle + radius (tan tan radius)

Hmooslechner — Sun, 23 Oct 2022 15:02:50 GMT

something like this:

Re: tan from line + tan from circle + radius (tan tan radius)

narchi — Sun, 23 Oct 2022 16:21:20 GMT

Thank you very much! Didn’t know you could do this faster!

Great video!