Can anyone explain next keyframe animation taken from *.ase file (3D Studio MAX 2.5)
*CONTROL_ROT_TCB {
*CONTROL_TCB_ROT_KEY 0 -0.0531 -0.7061 0.7061 3.0355 -0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 2880 0.0000 1.0000 0.0000 3.0602 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 3200 0.0000 1.0000 0.0000 0.2699 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 4800 -0.0000 -1.0000 -0.0000 0.9966 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 7200 0.0000 1.0000 0.0000 1.0332 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 8800 -0.0000 -1.0000 -0.0000 0.5864 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 10240 0.0000 1.0000 0.0000 0.3787 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 11520 -0.0000 -1.0000 -0.0000 0.2304 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 12480 0.0000 1.0000 0.0000 0.1065 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 13600 -0.0000 -1.0000 -0.0000 0.0698 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 14080 0.0000 1.0000 0.0000 0.0122 0.0000 0.0000 0.0000 0.0000 0.0000
*CONTROL_TCB_ROT_KEY 16000 0.0000 1.0000 0.0000 0.0175 0.0000 0.0000 0.0000 0.0000 0.0000
}
It looks as if the first number is time, the next three are an axis, the fourth is the rotation and as the rest of them are zero, I can’t really say much.
It could also be a quaternion of four values.
Obviously, this is mere guesswork. www.wotsit.org has some info on fileformats, and if that fails just create some animations with specific movements and observe the results in the file. (Or try to treat them as axis/rotation or quats and see what happens.)
[QUOTE]Originally posted by macke:
[b]It looks as if the first number is time, the next three are an axis, the fourth is the rotation and as the rest of them are zero, I can’t really say much.
It could also be a quaternion of four values.
Thanks anyway, but can you explain this “quaternion”. What is it and how i can use/program it ?
Do you know any web site, where i can find more information about Keyframe animations ?
(TCB Rotations, Bezier interpolations etc…)
The rotation information exported by 3DSMax’s ASE exporter is something to the tune of “time (quaternion x,y,z,w) tension continuty bias easeIn easeOut”. A total of 10 numbers.
It’s a bitch, and I never was able to get all the quaternion + TCB + easeInOut logic working (actually, as I worked on it I progressively got more and more disappointed about the time it would take for every evaluation, until I abandoned solving it.)
What I did instead was open up the ASE exporter and change how it exported rotation keys. Now I get an axis,angle from the exporter and not in three years have any animators asked what happened to their TCB/easeInOut tweaked animations.
If you like, I’ve made the 3 versions (Max 2.5, 3.1 and 4.0) of my tweaked exporter public. You can get them here: http://www.pond.net/~davem/asciiexp/
-Blake