Tangential dimensioning

[domad]

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Hello to the Community, Hello PeterPNoster!
You may find the solution here: https://forum.freecadweb.org/viewtopic.php?f=35&t=59334
In the gif there is a flow that can be used for the qutature of the tangency

[PeterPNoster]

Hello domad,
Nice toolbox, I did not know this function.

In the gif there is a flow that can be used for the qutature of the tangency

Can you tell me which function is meant?

Cheers,
PeterPNoster

[domad]

Hello domad,
Nice toolbox, I did not know this function.
...........
Can you tell me which function is meant?
Cheers,
PeterPNoster

Hello PeterPNoster!
I apologize for the delay, but before I didn't have time to make a * .gif to show how it's done: https://forum.freecadweb.org/viewtopic. ... 4&start=10

[PeterPNoster]

Hello PeterPNoster!
I apologize for the delay, but before I didn't have time to make a * .gif to show how it's done: https://forum.freecadweb.org/viewtopic. ... 4&start=10

Thank you!

[PeterPNoster]

Hello together,
How do we get this two very useful TechDraw macros into the main branch?

• Intersection dimensioning

• Tangential dimensioning

Cheers,
PeterPNoster

[chrisb]

How do we get this two very useful TechDraw macros into the main branch?

Edi is working on it. If you can help out, it sure would be appreciated!

[domad]

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Hi PeterPNoster, greetings to the community!
You can already create them with @edi "TechDrawTools" macro, here some examples https://forum.freecadweb.org/viewtopic.php?f=35&t=59334.
And hopefully soon natively integrated into TechDraw, here the wiki "Extensions" https://wiki.freecadweb.org/TechDraw_Workbench.

[PeterPNoster]

Dear domad,
I'm still not sure, if the tangential dimensioning can be done with the TechDrawTools.

Bildschirmfoto vom 2021-12-26 13-12-53.png (17.38 KiB) Viewed 2231 times

PeterPNoster

[Roy_043]

It is a bit of a hassle:

1. Create centerlines for the arcs at each end.
2. Create a vertex at each end at the intersection of these centerlines.
3. Create lines through these vertices parallel to one of the longest edges.
4. Create vertices at the intersections of the largest arcs and the just created parallel lines.
5. You now have two vertices that you can use for your dimension, the rest of the temporary geometry can be removed.

[edi]

How do we get this two very useful TechDraw macros into the main branch?

• Intersection dimensioning

As far as I can see the macro https://github.com/reox/FreeCAD_macros/ ... mensioning creates a TechDraw vertex at the intersection of two straight lines.

- In TechDrawTools.FCMacro you will find a tool (create intersection) which creates TechDraw vertexes at the intersection of two straight lines, a straight line and a circle or two circles. The result is 0, 1 or 2 vertexes.

- To solve the issue in FreeCAD's Python you can use the objects Part.Line and Part.Circle which both have a method intersect returning a tuple including the resulting vertexes. As example see TechDrawTools.FCMacro class IntersectionVertex about line 2440.

- All that stuff has been realized in C++ (https://forum.freecadweb.org/viewtopic.php?f=17&t=63548) and is waiting to become merged into the main branch.