Michael, Wow,
thats all I can say! You really nailed it and from what I can see its exactly what I need!
Thanks for helping me on this. I will try the indicated process as soon as possible and let you
know how it works for me!
Best regards
and two thumbs up for your help!
Heiner

Hi Michael,
i took the time and started with the next part out of a series i have to do, and applied carefully your instructions,
down to the controlpoint level. I even had the reconstruct command run over the surface, i use as projection target for flow




Following your instructions and clicking the upper right corner and the corrosponding spot on the surface to project on, i get this result:



No matter which spot I click, i get a very similar result all the time.
If i reorient my source object (the one which i want to do the flow) the results vary and sometimes get closer to the desired result, but
always not entitely. As example please see this:



I will add the file in the next post.
Best regards
Heiner

So,
and here is the file in question!
Regards
Heiner

I will suggest running FLIP on the curved target surface.

- Brian

You have nice color Styles!

Hi Brian,
did you get that result using my file?
I tried that, used Flip on the projection surface, and what i got is this:



Almost the same what i had before ... :-(
Regards
Heiner

Hi Heiner

Yes, I used your model.

Either do FLIP once on the Base Surface, or else do FLIP once on the Target Surface.

Run FLOW. I am just selecting somewhere in the surface, not corner points. For the Object to flow, I selected the side of the "seat."

- Brian

(I did manage once to flow the seat sideways once.)

.

Hi Heiner, it looks like the problem in your case there is that you've probably enabled the "Projective" option for Flow, which is a checkbox that shows up in the pick target object stage, here:



In order for your case to work properly and to follow along with the steps I had earlier, make sure that checkbox is unchecked. If it is checked then that will enable a different mode for Flow which is called projective mode, and in projective mode it is expected that every ray that shoots out from the base plane should intersect the target object which is not the kind of arrangement you have.

Projective mode is more for beaming on a small shape onto a local area of an object, rather than stretching it all the way across a target surface. For your case here you want the regular "full stretch across surfaces" method so you will want that checkbox turned off. It is off by default for the start of a program session however if you have enabled it during some previous test of using Flow within this same modeling session it will remember the previous state and so that's probably how you ended up with it turned on.

Anyway, if you uncheck that option you should be able to get things to work as in those previously described steps.

- Michael

Hi Heiner, so just as a bit more description of "Projective" mode, the way Flow works with that option enabled is that it shoots out rays from the base plane which in your case results in rays like this:



It is expecting those rays to intersect the target object. But as you can see here there are a large number of rays that do not intersect your target object. In places that do not intersect there will be a kind of default transformation set up, it can tolerate a small number of missed rays but not big broad areas where there are not any ray intersections.

So your case here is not a good candidate for the "Projective" flow mode, you need to use the regular non-projective mode so make sure the Projective checkbox is turned off.

Projective mode works well when you want to place a small object onto a localized area of a larger object something more like this:



- Michael

Hmmm, it seems as if my understandig of "projection" was entirely wrong ...
I have it working now, thanks to you!
Best Regards
Heiner