Hi All,
I already posted this question on Revitforum.org, but so far received no response. That’s why I hope to attract a different audience over here.
My issue is as follows:
I pull points from Revit, in the World coordinate system (family placement point). What I need to do, is transform these points to a new coordinate system, based on the first 2 picked points (first point is origin, second point is on X-axis) I then feed those coordinates back into shared parameters, tag em and enable the installation crew to do a fast check on positioning of surrounding steelwork etc. Large part of the script is working, but I can’t get my head around the transformation. I hope someone can point me in the right direction…
Thanks ahead!
Regards, Ron van Slobbe
NLRS_00_GM_WPB_maatreferentie_generiek 03
coordinaten meetpunten bepalen
See attached.
To translate the points to a new coordinate system, you could just do a simple addition/subtraction (used Lunchbox to decompose values).
To feed parameters back in, you could create a shared parameter to store the info, and then use SetParameterByName to set the values.
Hello Gui,
Thanks for your reply. Unfortunately this is not what I’m looking for. It’s not just a replacement of the origin, it could also be a rotation.
That makes it a lot more complex…
Couldn’t properly study your attached definition as it has a Custom node
However, if you need to transform geometry from one Coordinate System to another you could use Geometry.Transform
Hello Vikram,
Thanks for your input. Unfortunately I am still not getting the desired result.
When you look at the watch on the bottom the first point should read 0, 0, 0, the second point 12240, 0, 0 and the third point 12240, 12240, 0
So I suppose something goes wrong in the Node “Coordinatesystem.ByOriginVectors” but I simply cannot grasp what I miss…
Anyone has a clue ?
May not be the right suggestion, as I don’t think I’ve managed to grasp what you’re attempting.
Use the points to specify the direction, but would suggest that you transform lines or other geometry. Not points.
