[solved] Getting bone direction and scale.

[shadmar]

I'm creating a spaceship that will have emitters based on a bone location emitting in the bone local direction.

My spaceship has bones for every thruster with size location and direction.

 

self.child = self.entity:FindChild("thruster_linear_1")
if self.child then
self.emitter = Emitter:Create(1000)
self.emitter:SetEmissionVolume(Vec3(.01,.01,.01));
self.emitter:SetPosition(self.child:GetPosition())
self.emitter:SetVelocity(Vec3(self.child:GetRotation())) --this didin't work
end

 

Any ideas how I can proceeed to have the emitter emit along the bone vector and scale?

[YouGroove]

I have used Matrix (the functions not the movie )

But what as lacking was functions to move relative to attach point and turn relative to it, all ith matrix functions.

Search for my old post on "Matrix or attaching"

[shadmar]

Found it thanks

[shadmar]

It doesn't seem to matter what the vector of a bone is even if I use

 

self.emitter:SetMatrix(self.child:GetMatrix()

[shadmar]

Nah just me, got it, thanks. All good. Except for scale.

[shadmar]

Scale works too, just need to type my problems and my brains starts to work.

[shadmar]

Nice this now works : Emitter will align to bone by the y-axis (exported from UU3D) and scale to bone scale correctly.

 

function Script:Start()
   self.entity:SetRotation(45,45,0); --rotate spaceship
   self.child = self.entity:FindChild("thruster1") --find thruster bone
   if self.child then
       self.emitter = Emitter:Create(1000) --create an emitter for it
       self.emitter:SetEmissionVolume(Vec3(0.1,4,0.1));
   end
end

function Script:UpdateWorld()
   if self.child then
   self.entity:Turn(Time:GetSpeed()*0.02,Time:GetSpeed()*0.05,Time:GetSpeed()*0.03); 

   self.emitter:SetMatrix(self.child:GetMatrix()) --align emitter to bone
   self.emitter:SetScale(self.child:GetScale()) --scale emitter by bone scale
   end
end

[Rick]

Bones have scale? I thought it was more like a pivot which is basically just a 3D point?

[Admin]

They still have a scale value and a transformation space.