Get 3D Motion path Data
by Charlie Brown
on
Jun 26, 2008 at 5:02:56 pm
hi, everybody...
I converted a regular motion path to 3D motion path by doing this:
1.) Paste a spiral motion path from illustrator to the position parameter of a 3D Null 1
2.) Create a 3D Null 2 and parent Null 1 to it.
3.) Rotate Null 2: X-axis 90 degrees.
4.) Set auto-orient to Orient along path on Null 1 (optional)
5.) Parent the object you want animated to Null 1
Questions
1.] Everything works fine,BUT how do I access the new 3D positional values of the motion path (Null 1 + Null 2).
2.] The arrow periodically jerk rotates along the path, how can I get the motion to be fluid without gimbal jerky rotation.
Re: Get 3D Motion path Data by Darby Edelen on Jun 28, 2008 at 8:07:43 am
Auto orient to path often behaves strangely when you move the object in a circle. Have you considered doing this a different way?
Have you tried parenting Null 1 to Null 2, then rotate Null 2 on it's Y-axis (for example) while animating the Z position of Null 1 from some number like -400 to 0? You could animate Null 2's Y position simultaneously to get a sort of an ascending spiral if you wanted.
Since Null 1 is parented to Null 2 it would always have the same orientation relative to Null 2 so the auto-orient step should become unnecessary.
This might be more complicated if you don't want a simple spiral.
Darby Edelen Lead Designer Left Coast Digital Santa Cruz, CA
