[Closed] Getting nuts, transform doesn't work

Not a single soul who know how to fix this?

Is your $FFumeFX01 parented to anything?

I have found the same problem in trying to work with transform matrices… it seems that when you get the matrix, it’s in world space, but when you set it, it sets it relative to the object’s parent.

Consequently, before you apply the transform, you have to multiply the transformation matrix by the inverse of your target’s parent’s transform to get it in the correct space.

so this:

  $FumeFX01.transform = $AnimFFX_box.transform
 

should become this:

  tgt_xform = $AnimFFX_box.transform
  if $FumeFX01.parent != undefined then
  (
  	tgt_xform = tgt_xform * (inverse $FumeFX01.parent.transform)
  )
  $FumeFX01.transform = tgt_xform
  

That should help…

as a side note, I cannot get the xformTrans matrix method to work as it should for doing the same thing, this was the only way I could get it to function correctly.

Good luck, I hope it helps!

I don’t have Fume so I can’t test this. Why not contact Allan as I’m sure he would be the best person to correct it.

Hello

And thanks for your help rhithyn, but I am affraid that didn’t work either, almost the same as it was before with only this code:

$FumeFX01.transform = $AnimFFX_box.transform

The FumeFX container doesn’t place itself to the position as the box is for some reasons…

PEN, you don’t need FumeFX to try this, you can use a simple box, doesn’t matter.

Here is the whole code:

rollout ToolsRoll “Tools” width:496 height:288
(
groupBox grp2 “Create FumeFX grid for animated object” pos:[24,16] width:208 height:104
pickButton ChooseOBJ “Select animated object” pos:[48,48] width:152 height:24 toolTip:“Select the object in the scene that is animated”
pickButton ChooseFFX “Select FumeFX grid” pos:[48,80] width:152 height:24 toolTip:“Select the FumeFX grid”

on ChooseOBJ picked obj do
(
myOBJ = chooseOBJ.object

slidertime = animationrange.start
for i = animationrange.start to animationrange.end do
(
min1 = (box scale:[.1,.1,.1] name:“track_min1” position:myobj.min)
max1 = (box scale:[.1,.1,.1] name:“track_max1” position:myobj.max)
min2 = (box scale:[.1,.1,.1] name:“track_min2” position:[max1.position.x, min1.position.y, min1.position.z] renderable:false)
min3 = (box scale:[.1,.1,.1] name:“track_min3” position:[min1.position.x, max1.position.y, min1.position.z] renderable:false)
min4 = (box scale:[.1,.1,.1] name:“track_min4” position:[max1.position.x, max1.position.y, min1.position.z] renderable:false)
max2 = (box scale:[.1,.1,.1] name:“track_max2” position:[min1.position.x, max1.position.y, max1.position.z] renderable:false)
max3 = (box scale:[.1,.1,.1] name:“track_max3” position:[max1.position.x, min1.position.y, max1.position.z] renderable:false)
max4 = (box scale:[.1,.1,.1] name:“track_max4” position:[min1.position.x, min1.position.y, max1.position.z] renderable:false)
slidertime +=1
)
fooCollect = $track_* as array
for i = 1 to fooCollect.count do
(
addmodifier fooCollect[i] (edit_mesh())
collapsestack fooCollect[i]
)
for i = 1 to (fooCollect.count – 1) do
(
meshop.attach fooCollect[foocollect.count] fooCollect[i] – attaches all to one mesh
)
final_myobj = fooCollect[fooCollect.count]
(
newmin1 = (dummy name:“boundary_min1” position:final_myobj.min)
newmax1 = (dummy name:“boundary_max1” position:final_myobj.max)
newmin2 = (dummy name:“boundary_min2” position:[newmax1.position.x, newmin1.position.y, newmin1.position.z] renderable:false)
newmin3 = (dummy name:“boundary_min3” position:[newmin1.position.x, newmax1.position.y, newmin1.position.z] renderable:false)
newmin4 = (dummy name:“boundary_min4” position:[newmax1.position.x, newmax1.position.y, newmin1.position.z] renderable:false)
hide newmin1
)

delete final_myobj

A1=$boundary_min4
B1=$boundary_min3
C1=$boundary_min2
D1=$boundary_max1

MyLength = distance A1 C1
MyWidth = distance A1 B1
MyHeight = distance A1 D1

var_x = (B1.position.x + ((distance A1 B1)/2) )
var_y = (C1.position.y + ((distance A1 C1)/2) )
var_z = (D1.position.z – ((distance A1 D1)/2) )

DummyBox = (box name:“AnimFFX_box”)

DummyBox.length = MyLength
DummyBox.width = MyWidth
DummyBox.height = MyHeight
centerpivot DummyBox
DummyBox.position = [var_x,var_y,var_z]
delete $boundary_*
)

on ChooseFFX picked obj do
(
obj.name = “FumeFX01”
ChooseFFX.text = obj.name
centerpivot $FumeFX01

$FumeFX01.width = $AnimFFX_box.width
$FumeFX01.height = $AnimFFX_box.height
$FumeFX01.length = $AnimFFX_box.length

–$FumeFX01.position.x = $AnimFFX_box.position.x
–$FumeFX01.position.y = $AnimFFX_box.position.y
–$FumeFX01.position.z = $AnimFFX_box.position.z

–$FumeFX01.transform = $AnimFFX_box.transform

tgt_xform = $AnimFFX_box.transform
if $FumeFX01.parent != undefined then
(
tgt_xform = tgt_xform * (inverse $FumeFX01.parent.transform)
)
$FumeFX01.transform = tgt_xform
delete $AnimFFX_box

)
)

But maybe Allan can answer and have some ideas… Hard nut to solve for me…

bb = #()
 bb = nodeLocalBoundingBox $AnimFFX_box 
 $FumeFX01.position = $AnimFFX_box.position * [1,1,0]	+ [0,0,bb[1].z]

the incorrect positioning happens because using “centerpivot” on the fume fx container does not affect the Z component of the pivot point, the above code compensates for that. You could also use $fumeFx01.pivot = $fumeFX01.center instead, like so:

$FumeFX01.pivot = $FumeFX01.center
$FumeFX01.position = $AnimFFX_box.position

Wow, that really worked out for me, big thanks Furball89 and rhithyn for your help!