It's not much of an exporter really in terms of plugins, it's a MaxScript that traces or write the data to a file for me to copy/paste into a xml with all data for the scene I'm working on. Not so streamlined solution, but worked out well for my project. I had a moving, and sometimes shaky, camera used on set, so I had PFTrack solve both the camera and model movement to Max data. In this way I could animate the camera for each frame as well. Had major problems to set focus/zoom/fov to get a 100% match, maybe the rotation-order you mentioned should have done the trick.
I put the 3D on top in my solution, masking stuff in flash for objects infront of the 3D layer. Your solution with a matte-layer is better looking though, with the feathered edge. Lengthy thread... the forthcoming forum will be a welcome addition the this community to handle comments on threads. On 4 Maj, 01:46, extralush <[email protected]> wrote: > Yeah the collada exporter is a bit weird. What version of max did you > write the exporter for? > > On May 3, 6:04 pm, inEar <[email protected]> wrote: > > > > > > > > > Nice work, thanks for sharing. I also had problems with rotations from > > Max in a similar project, ended up writing my own exporter for > > keyframe positions and rotations for models and cameras. > > > On 3 Maj, 16:44, extralush <[email protected]> wrote: > > > > Using all the information you get in a DAE file i modified my away3d a > > > bit to auto place the camera, set the focus, adjust the fov, etc. The > > > material is applied and the scene is played out at the specified frame > > > rate. Each frame a screen capture is done (we got the cropping data > > > from a photoshop plugin to reduce the size of the capture) and is > > > stored in a vector. The video is played back on a timeline and calls > > > are made when a model is needed to be played back with the video. A > > > bitmap is placed behind the video and for each frame the bitmapData is > > > updated from the vector created by the renderer. The reason i called > > > it compositing is because using just the DAE file i lined everything > > > up perfectly with the 3d scene / video it was tracked to. Ran into a > > > lot of issues along the way like away3d is a yUp world like 75% of the > > > 3D apps out there. 3DSMax is a zUp world which the solve for this is > > > to switch the rotation values for z and y. This works individually but > > > with multiple you get into rotation order messiness. To fix that you > > > have to adjust the separate the quaternion into 3 different ones then > > > adjust the order in which they are multiplied. This converts your > > > rotation order to yzx instead of default zyx. This sort of brings you > > > to the reason why DAE files are slow. They use rotation values in > > > degrees instead of quaternions or matrices (also vulnerable to gimbal > > > lock). Im not too familiar with MD2 but what does it use for its > > > rotation info? Anyway back to compositing. We also used LUTs for > > > curves and saturation to colorize each scene separately to compensate > > > for lighting changes. We can't get every shot perfect due to the > > > lighting coming from one side of the face or another but we feel like > > > we did a fairly good job with it. So all of the 44 scenes were > > > controlled from an XML file which made my life a bunch easier. Sorry i > > > think i started rambling a bit... > > > > On May 3, 8:28 am, Páll Zoltán <[email protected]> wrote: > > > > > niiiiiiiiice-nice job extralush, that's very cool! :) > > > > the 3d face is composited on the frontend? it seems like its done on > > > > backend, but that begs the question "why is this thread called awat3d > > > > video > > > > compositing" > > > > i'd really appreciate a short walk-through > > > > > thanks, > > > > Z > > > > > On Tue, May 3, 2011 at 2:00 PM, Fabrice3D <[email protected]> wrote: > > > > > 45%... 46%... > > > > > the compositing is kinda slow. I want to see the result so I let it > > > > > run in > > > > > background :) > > > > > but the baby is already like 15 minutes busy doing "things" > > > > > > I think you should add something, like "come take a free coffee at the > > > > > hotel bar" video if you do not want to loose your visitors > > > > > I also think you could offer to register the email, and add a "send me > > > > > email when ready" > > > > > > the head displayed as example in first edit screen is bit high on Y > > > > > axis, > > > > > and do not allow rotations, this would help to map a bit better. > > > > > > oh now 70% almost... :) > > > > > > Fabrice > > > > > > On May 3, 2011, at 12:31 AM, extralush wrote: > > > > > > > Hey guys. We launched a site today that has 3D face upload action > > > > > > using Away3D. 12 different videos and roughly 44 different scenes > > > > > > tracked and composited to video. We exported or files from 3DSMax > > > > > > using openCollada. Ran into plenty of weird things to get this > > > > > > working > > > > > > in an automated way and will eventually make a blog post or seven > > > > > > about it. Check out the link and let me know what you think. Upload > > > > > > your face to all 4 characters to see them all. > > > > > > >http://www.tripyourface.com/ > > > > > > > If you have any questions or comments on the 3d / compositing > > > > > > portion > > > > > > please feel free to IM (willbreel) or Skype (willbreel) me.
