feanor91
08-10-2008 12:58:38
Hi
I have a little problem.
I have to animate a kite by knowing different attitude of it base on quaternion. For says, I have 8 basic states all defines by a quaternion.
When kite move, I can pass from one state to another with a certain speed.
I know starting state, final state and all intermediate state that I need, so I can queue it, to dequeue when needed in animationframe (I always do for altitude).
So how can I compute the fact to pass from a quaternion to another?
Beside this, I have to play in the same time with roll pitch and yaw of the kite, because my quaternion gives 8 basic states, bu on a state, my kite can be places from a certain angle in either axis.
The technique is that I applied basic state then the angles needed, and so on during animation, exept that I don't know how to do.
FOr know, I achieve to place my kite in sarting state but not to move it to final state.
I will try tonight to put a video somewhere to show what I mean.
So, first some pictures to explain the 8 states (we call it postures):
Standard:
Opposed :
Reverse :
Plunge :
Dead :
Turtle :
Fade :
Belly :
And an example of a composed posture (Standard on right 35°)
As I say upward, all basic postures are made of quaternion then, if I have rotations, I apply a roll, pitch and yaw as needed.
And now, a video, to show you in function, it's a basic figure in indoor Kiting, it's called a 360 on righ with kites passing from ground to a giving altitude (with some move in the gymnasium to show the works .
)
http://www.dailymotion.com/feanor91/video/11771293
I have a little problem.
I have to animate a kite by knowing different attitude of it base on quaternion. For says, I have 8 basic states all defines by a quaternion.
When kite move, I can pass from one state to another with a certain speed.
I know starting state, final state and all intermediate state that I need, so I can queue it, to dequeue when needed in animationframe (I always do for altitude).
So how can I compute the fact to pass from a quaternion to another?
Beside this, I have to play in the same time with roll pitch and yaw of the kite, because my quaternion gives 8 basic states, bu on a state, my kite can be places from a certain angle in either axis.
The technique is that I applied basic state then the angles needed, and so on during animation, exept that I don't know how to do.
FOr know, I achieve to place my kite in sarting state but not to move it to final state.
I will try tonight to put a video somewhere to show what I mean.
So, first some pictures to explain the 8 states (we call it postures):
Standard:
Opposed :
Reverse :
Plunge :
Dead :
Turtle :
Fade :
Belly :
And an example of a composed posture (Standard on right 35°)
As I say upward, all basic postures are made of quaternion then, if I have rotations, I apply a roll, pitch and yaw as needed.
And now, a video, to show you in function, it's a basic figure in indoor Kiting, it's called a 360 on righ with kites passing from ground to a giving altitude (with some move in the gymnasium to show the works .
)http://www.dailymotion.com/feanor91/video/11771293