Inventor API drawing curve properties

[Anonymous]

Hello 

Can u help me?

I'm creating simple cam-programm, which will be working with inventor 2020, for my degree project at the university, so it is working like:

You take 3s model and make drawing on the drawing sheet, then pick clockwise curves of this drawing (arcs, lines..) one by one, and my program draw it in its own drawing space. 

My problem is that i can't understand algorithm naming point "startpoint" and "endpoint". I thought, that by logic the end point in previous curve is a start of current element, by that isn't right often, so in my programs drawing field the drawing isn't closed. 

Can u told me about that algorithm? Then i can correct wrong points. 

Thanks

[johnsonshiue]

Hi! I could be wrong, but I don't think the start point and end point are created in a predictable manner. Either end can be the start point or end point. You may need to apply certain geometric check to ensure the start point and end point are defined in the manner you are hoping for.

Many thanks!