Hi folks,

I found no solution to the following problem, maybe someone already solved it or can correct me.

Given a box with the top face selected.

'Edit sketch' is active.

IFace2 and ISurface objects of the top are available.

Given a point XYZ.

The goal is to project the point to the surface and get the proper values for CreatePoint2(x, y, z)

I got to the phase where the point is correcly projected onto the surface's plane. (x, y, z coordinates are correct)

I tried to give these values to CreatePoint2() No matter what the 'z' parameter was, the point was created on the surface's plane.

Then I tried to get 'u' and 'v' values for surface with ISurface.ReverseEvaluate() and tried CreatePoint2(u, v, 0). It was inconsistent.

For example on the top surface, x=-u, y=v, z=0 created the correct point, but this equation did not work on other sides.

I looked in the API help everywhere, and did not find info about the 'uv' vs. 'sketching plane' relations, not even a single transformation from one to another.

Finally I tried to turn off AutoSolve and AutoInference', same, no success.

In short:

If I have the x, y, z global coordinates for a point, which lays on the active sketching plane, how to create the point on that position?

I hope, something simple and elegant way exists to this problem.

Any help would be appreciated.

Thank you