My latest mail got bounced, not sure if it worked, I usually bake the world
matrix first otherwise it comes out non animated.
I use the script attached.
On May 18, 2017 7:42 PM, "Falk Hofmann" <[email protected]> wrote:
> I thought about baking the world matrix prior export. but this seems not
> to work out with .fbx.
>
> With .abc instead it worked fine from and back into nuke. if this might be
> an option as well.
>
>
>
> Hi there,
>
> I would like to Export a camera which is animated itself and also
> transformed by another animated axis
>
> If I try to export the camera with WriteGeo as a fbx the axis animation is
> ignored.
> Am I doing something wrong?
>
> Workaround so far would be to export the axis too and setting it up in my
> DCC of choice.
>
> BUT why?
>
> cheers,
> Vincent
>
>
>
>
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>
# Code by Erwan Leroy
import math
import threading
def bakeCameraThread(firstFrame, lastFrame):
n = nuke.selectedNode()
n.setSelected(False)
#check if it has a world matrix knob.
if not n.knobs().has_key('world_matrix'):
print "Error: The selected node is not supported"
return 0
#Create task to be run in separate thread
task = nuke.ProgressTask("Baking Camera")
task.setMessage("Baking Frame")
#create new camera/Axis
newNode = nuke.createNode(n.Class(), n.writeKnobs(nuke.WRITE_USER_KNOB_DEFS | nuke.WRITE_NON_DEFAULT_ONLY | nuke.TO_SCRIPT), inpanel=False)
newNode['xpos'].setValue(n['xpos'].value()+100)
newNode['ypos'].setValue(n['ypos'].value())
newNode['label'].setValue("Baked {0}".format(n.name()))
#Access Translation, Rotation, Scale knobs
translate = newNode['translate']
rotate = newNode['rotate']
scale = newNode['scaling']
#Reset Translation, Rotation, Scale
translate.clearAnimated()
translate.setAnimated()
rotate.clearAnimated()
rotate.setAnimated()
scale.clearAnimated()
scale.setAnimated()
#Calculate Trans/Rot/Scale from matrix for each frame
for f in xrange(firstFrame, lastFrame+1):
if task.isCancelled():
nuke.executeInMainThread( nuke.message, args=( "Canceled" ) )
break;
#create blank Matrix
mResult = nuke.math.Matrix4()
for i in xrange(0,16):
mResult[i] = n['world_matrix'].valueAt(f)[i]
mResult.transpose()
#Calculate Stuff
mTranslate = nuke.math.Matrix4(mResult)
mTranslate.translationOnly()
mRotate = nuke.math.Matrix4(mResult)
mRotate.rotationOnly()
rotateRad = mRotate.rotationsZXY()
mScale = nuke.math.Matrix4(mResult)
mScale.scaleOnly()
#Assign Keyframes
translate.setValueAt( mTranslate[12], f, 0)
translate.setValueAt( mTranslate[13], f, 1)
translate.setValueAt( mTranslate[14], f, 2)
rotate.setValueAt( math.degrees(rotateRad[0]), f, 0)
rotate.setValueAt( math.degrees(rotateRad[1]), f, 1)
rotate.setValueAt( math.degrees(rotateRad[2]), f, 2)
scale.setValueAt( mScale.xAxis().x, f, 0)
scale.setValueAt( mScale.yAxis().y, f, 1)
scale.setValueAt( mScale.zAxis().z, f, 2)
#set thread progress
task.setProgress(int((f-firstFrame)/((lastFrame-firstFrame)*0.01)))
def bakeCamera(firstFrame, lastFrame):
threading.Thread( None, bakeCameraThread(firstFrame, lastFrame) ).start()
bakeCamera(1001, 1400)
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