Macro: Version 3: helper tools to improve TechDraw documents

[PeterPNoster]

Hello together,
Could anyone please this fantastic toolbox with the following functionallity?

Of course,

td_td_tan_line_line_sketch.png

To stick to the helper tools way of thinking, it should be a method that will put a helper point on a arc perpendicular to a selected line.
reox has done similar things with his dimensioning macros. --> Link

[PeterPNoster]

Hello together,
Could anyone please upgrade this fantastic toolbox with the following functionallity?
--> Link
To stick to the helper tools way of thinking, it should be a method, that will put a helper point on an arc perpendicular to a selected line.
reox has done similar things with his dimensioning macros. --> Link
Cheers,
PeterPNoster

[edi]

Hello Peter,
I think I can manage the problem. Please give me some days. I will add the tool to https://forum.freecadweb.org/viewtopic.php?f=35&t=59334

[edi]

Hello Peter,
please forget the post before.

The problem can be solved already using the existing tools found in https://forum.freecadweb.org/viewtopic.php?f=35&t=59334

Techdraw14.png (22.81 KiB) Viewed 1889 times

Workflow:
- create centerlines of the arc using "Draw circle centerlines"
- create a control vertex at the center of the arc using "Create vertex at intersection" using the two centerlines
- create a perpenticular line to the right slanting line through that control vertex using "Create a line perpendicular to another line"
- create a control vertex at the intersection of the arc an the perpendicular line using again "Create vertex at intersection"
- create the dimension using the TechDraw command "Insert length dimension"

[PeterPNoster]

Hello edi
Thanks for taking care of the problem.
The dimensioning line should be parallel to the blue line.

Bildschirmfoto vom 2021-06-15 10-28-53.png (50.11 KiB) Viewed 1860 times

Cheers,
PeterPNoster

[edi]

Hi Peter,
it is a "work of art" and not 100% the standard:

TechDraw14.png (12.19 KiB) Viewed 1844 times

Workflow:
- create a help-line (cyan) perpendicular to the top line through the right vertex
- create a second help-line (cyan) perpendicular to the first one.
- create the intersection vertex at the arc
- use TechDraw "Length dimension" selecting the first help-line and the vertex at the arc
- now the two help-lines can be erased

When creating a tool in Python, vertexes and lines can be calculated and created. But in Python there are only the same possibilitys to use the dimension commands as manually.

[PeterPNoster]

Wow, quite a lot to be done for one dimensioning line.
I'm not an artist, just want to put a few basic dimension lines on a sheet metal drawing...
-->Link
But thank you for the effort.
Cheers