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  • Published 4 Dec 2019

Motion Path relative to camera view

While animating (especially with character animation), we always need to track parts of the body to check our "arcs". While it's working fine on a fixed camera, the "motion path" option doesn't work if the camera is moving, as the motion path work on a global space and not in camera space (or screen space ?). It would be very useful to have a camera relative option, instead of tracking arcs manualy with the anotation tool, or worse, on a transparent celluloid taped on the screen as they do in some studios !

update motion path option.png

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Development Status: Open

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denis
4 Dec 2019

4 Comments

okuma_10

yes I mentioned this to someone before. And he just laughed in my face, that it was a useless thing. That 3d motion paths were better, bla bla bla. While I don't disagree that you can get far with the 3d motion path, from experience I know that sometimes a 2d(screen space) motion path is better. Because in the end we are always animating to the screen. Had plenty of times , the issue where in 3d the motion feels fine,the arks are fine, but in 2d things don't look as good. In those cases, I just use EpicPen to mark arks on screen.

1
MrAdamEarle

At the moment i use grease for this marking up that animation and set to be always in front screen space/ 2D motion paths are just important

damienponsdp

Thanks Christoph Lendenfeld and Pierrick Picaut ! "landed just before #b3d 4.1 moves into beta. Camera-space motion paths." twitter.com/vieleanimations/status/1754994388004909453

denis Author

Just found a tool that does that in MAYA : MGtools pathtracker. Here is a video demo, that explains very well the issue : youtu.be/AzultIay4Ag