Transform between Project Base Point and Internal Origin

[gifthelper01]

Hi All,

The Project Base Point and Internal Origin of my project are not at the same location as shown below.

I want to use Revit API to place a family at a coordinate (x="831420800" y="843024365" z="46559) relative to Project Base Point. However, I know that Revit API will use Internal Origin as (0,0,0) when placing the family. Is there any ways to get the coordinate of Internal Origin in Revit such that a transformation can be made at (x="831420800" y="843024365" z="46559) before placing the family?

I am looking for an automatic method through API to get the coordinate of Internal Origin.

Thanks.

[steven.williams.as · Accepted solution]

Have you tried getting the Project Base Point using the method @grahamcook posted here? You should then be able to use the Transform class with your XYZ points (Internal Origin and Project Base Point) to project your desired coordinate into internal Revit coordinates. Just remember that you are projecting into Revit coordinates for drawing, not making Revit draw things at your desired location, for example relative to the Project Base Point.

[gifthelper01]

Hi onomiu2, thanks for your reply.

I tried to use the method you mentioned to get the coordinate of Project Base Point. However, the coordinate I get is not relative to Internal Origin in Revit, am I right?

Is there any way to get the Project Base Point relative to Internal Origin?

Thanks.

[mhannonQ65N2 · Accepted solution]

You can use the BasePoint.Position property to get the base point's position relative to the internal origin.