Assigning sketches to standard planes, macro

[freedman]

TheMarkster wrote this in a post and it got me fired up to generate a macro:
https://forum.freecadweb.org/viewtopic. ... 88#p444030

See the last post.

[kisolre]

Could you add possibility too remap to selected objects CS? Like add a datum plane and remap several linked sketches to it for easy common manipulation?

[freedman]

See last post.

[freedman]

Here you go. There isn't a lot of error handing so select appropriate stuff because it will remap to almost anything . The button "???" will fill in with the reference selected, a new Plane/Datum/LCS can be selected anytime. Now that we have a target for mapping we move to the lower section and select a sketch, then click on the "Map to support" button. The map to support process can be repeated, pick a sketch click the button.

Maybe not the best interface, I didn't have much time.


I should also reiterate that this macro will remap sketches to standard planes/datum planes/LCS while preserving the sketch location. If this looks like something we could use in the Help section to allow folks to fix their (face attached models) I can add error handling.

Edit: I noticed that after the new mapping a recompute should be done. I will leave that out of the macro at this point.

[freedman]

I plan to add recompute to the macro, I have had some FreeCAD crashes, this thing is a bit dangerous without a recompute I think. You can also imagine as I do that mapping a sketch to new place could have some serious issues if not done in a correct way and finished completely.

If anyone has thoughts about features that could make this more useful as a test bed for anti-TNP modeling. Is there some sort of next step?
Some thoughts I had:

1) I could add an auto assign to sketch button that would automatically assign a sketch to a plane when exiting Sketcher.

2)A thought, could everything just be assigned to the XY_Plane. If I create a model and pad, then pocket a few features the model doesn't care if I map everything to the XY_plane, the Pad/pocket holds the correct offsets, granted they can be very complex in the properties, but not in the Pad/Pocket task combo view windows

3) When the remapping occurs could the map-to face location be saved and compared later for changes.

Thanks

[freedman]

I updated the macro, now V2. I added a recompute after every map assignment and made the XY plane a default selection. I think this is much more stable to use.

[freedman]

Had an upgrade idea: Added another button that allows direct mapping. You can select and map a Sketch/Plane/Datum/LCS direct to some other Plane/Datum/LCS. Have fun mapping.

[edi]

Could you please give a workflow how to use the script.
I did the following:
- create a sketch and a datum plane
- start the script
- select the sketch
- click the XY-Plane button
- select the plane
- click the upper Map to support button

Returned are the messages:

1372.47 <App> Document.cpp(3151): The graph must be a DAG.
1372.52 <App> Document.cpp(3504): Unbenannt#Sketch still touched after recompute

[freedman]

Returned are the messages:
1372.47 <App> Document.cpp(3151): The graph must be a DAG.
1372.52 <App> Document.cpp(3504): Unbenannt#Sketch still touched after recompute

Oh ya! You can mess up a model so very quickly using this. I should write in bold. Development only on every page. To use this you really need to have a good handle on FreeCAD basic structure.

Step #1, is the target Plane/Datum/LCS, I wrote it this way so the user knows that those are the only things that should be selected. You select the reference in the tree and click the button, you will see the button text populate. Let's say it states XY_plane.

Step #2,
Select a sketch and click Map to support, your now finished with one mappping. If you go look at the sketch support you will see XY_Plane.

After this you can do more by repeating step #2 but you also need to decided on the goal. If you are mapping everything to the XY_Plane then you don't need to do step #1 again, just repeat step #2.