Hi,

can you give me more details?

• which ALLPLAN version are you working with
  
• briefly, what is the workflow, you are trying to implement: are you trying to select something in the UVS or trying to draw something there (perform coordinate input)
  

Best,
Bart

Hi,

I assume, what you build is an interactor PythonPart. During the input, you are calling coord_input.GetInputPoint() somewhere in your code. Try to call coord_input.GetInputAssocView() directly after that. This should give you the AssocViewAdapter - basically the representation of the UVS, in which the point was clicked.

This adapter should have a transformation matrix. You can get it with GetTransformationMatrix. This matrix transforms elements from world coordinate system to UVS coordinates. What you need is the opposite. You want to transform the point from UVS to world coordinate system, so you will need the inverted matrix.

The code could look like this

    assoc_view = coord_input.GetInputAssocView()
    world_to_uvs = assoc_view.GetTransformationMatrix()

    # copy the matrix and invert it
    uvs_to_world = AllplanGeo.Matrix3D(world_to_uvs)
    uvs_to_world.GaussInvert()
    
    point_in_world = your_point_in_uvs * uvs_to_world

Please make sure, that the matrix you get is not an identity matrix. This would mean, that the GetInputAssocView() didn't delivered what it should. I know it worked, but now I cannot make it work on my PC.

Best,
Bart

Actually, that is the expected outcome - the matrix is correct. This is due to the fact, that a UVS is only a 2D representation of the model. It's basically a collection of 2D-lines, with Z coordinate equal to 0. The 3rd dimension gets lost. So when you point on the lower-left corner of the column in the section 2-2 , you can only figure out its X and Z world coordinates. To figure out the Y coordinate, you would have to prompt for an "additional" point in the section 3-3.

This is how some of the native functions in ALLPLAN deal with input in UVS. E.g. when placing a mesh or a fixture in a UVS, you are always asked to click an additional point in another UVS (whose view direction does not align with the direction of the initial one) for exactly this purpose: figure out the third coordinate.

Best,
Bart