Problem Strange animation effect

[johnnymanly]

I'm working on a gauge set using layers of animated mesh groups.
If I advance or retard the throttle slowly using ctrl/num+ everything is fine but if I blip the throttle using num+ the involved meshgroups start to scale.
The more I blip the throttle, the bigger they get.


The animations are done like so:

trans_thrust1 = {
  type = "rotation",
  mesh = 0,
  grp = 20,
  ref = {x=0,y=0.287,z=0.221},
  axis = {x=0,y=0.23,z=-1},
  angle = 270*RAD
}

trans_thrust2 = {
  type = "rotation",
  mesh = 0,
  grp = 21,
  ref = {x=0,y=0.287,z=0.221},
  axis = {x=0,y=0.23,z=-1},
  angle = 180*RAD
}

trans_thrust3 = {
  type = "rotation",
  mesh = 0,
  grp = 22,
  ref = {x=0,y=0.287,z=0.221},
  axis = {x=0,y=0.23,z=-1},
  angle = 90*RAD
}
animcomp_thrust1 = oapi.create_animationcomponent(trans_thrust1)
animcomp_thrust2 = oapi.create_animationcomponent(trans_thrust2)
animcomp_thrust3 = oapi.create_animationcomponent(trans_thrust3)
anim_thrust = vi:create_animation(0)
vi:add_animationcomponent(anim_thrust,0,1,animcomp_thrust1)
vi:add_animationcomponent(anim_thrust,0,1,animcomp_thrust2)
vi:add_animationcomponent(anim_thrust,0,1,animcomp_thrust3)

And are called like this:

function redraw_panel_thrust()

    local thrst = vi:get_thrusterlevel(thmain)
    vi:set_animation(anim_thrust, thrst)

end

Any Idea what I'm doing wrong?

 

[johnnymanly]

Video of the problem:

 

[Matias Saibene]

From what I can see, you're using Orbiter in Wine.

I don't know anything about Lua, but I imagine it might be a compatibility issue with Wine (correct me if I'm wrong).

For Lua support, we should ask @Thunder Chicken and @Gondos.

 

[johnnymanly]

Just tried on Win10, same result.

 

[johnnymanly]

Friendly bump...

Toggling scale and translation animations seems to be okay but toggling rotation animations causes the mesh groups to scale up.
I don't know if this is a bug or if I'm doing something wrong. I hope it's the latter to be honest.

 

[N_Molson]

The thing is that each operation that you perform as a part of your animation is a mathematical transformation in a dynamic environment. So, depending in which order you do things, it can give different results.

Meshgroups that 'scale' weirdly makes me think that maybe some of your transformation vectors are not normalized ?

 

[johnnymanly]

I'll have to learn how to normalize vectors. I think there's info on this forum somewhere about it.
Thanks for the tip.

 

[johnnymanly]

The thing is that each operation that you perform as a part of your animation is a mathematical transformation in a dynamic environment. So, depending in which order you do things, it can give different results.

Meshgroups that 'scale' weirdly makes me think that maybe some of your transformation vectors are not normalized ?

Yes. That was it. All is right now. Thanks a bunch!

 

[N_Molson]

Glad it worked. Note that you can write in your code :

normalise(myVector)

 

[johnnymanly]

Very good. thanks again.