Hello everybody,
I have to make a small rig for a skeleton, to see if it's correct by simple cinematic movement.
I need help on matrix & positions: This is about a knee flexion.
At the frame 1 I need to play with point positions: I can move the knee anywhere I want.
But my ankle would not move because the position is already knowed.
So I made a little combo with nulls to tune the knee and I wish to have a relation between the knee but not as child/parent because I want to have free control on the knee without moving the ankle.
On the knee we have 2 curve with a carve OP generating an axis line with up/normal/tangent and then I've got a central point with a correct orientation from the axis.
I can generate a line between this central point to the ankle so we can see a schematic schin.
in that situation my ankle is in the center of the world : {0,0,0 }
and when I connect it to my knee, it's going to {0.32,0.15,-1.85}
the movement is really good but I want to start with the initial position at 0,0,0 and then rotate around the knee
What did I miss to keep the inital pos then apply the matrix transformation?
I hope it's not to confused.
Thanks for your help!!
Greetings
Fred