Hi,
I am trying to convert camera node from using the matrix to using its
scale translate and rotate knobs but I can't seem to get it to line
up. Is there an easy way to do this?
Here's my code:
import logging
import math
import nuke
import nukescripts
def makeSRTNodeOfSelectedNodes():
selectedNodes = nuke.selectedNodes()
if len(selectedNodes)!=1:
nuke.message("Please select one camera node")
return False
nukescripts.edit.node_copypaste()
cameraNode = nuke.selectedNode()
convertCameraFromMatrixToSRT(cameraNode)
def convertCameraFromMatrixToSRT(cameraNode, startFrame=None, endFrame=None):
if startFrame==None:
startFrame = int(nuke.root()["first_frame"].value())
if endFrame==None:
endFrame = int(nuke.root()["last_frame"].value())
for frame in xrange(startFrame, endFrame+1):
setScaleFromMatrix(cameraNode, frame)
setRotationFromMatrix(cameraNode, frame)
setTranslationFromMatrix(cameraNode, frame)
cameraNode['useMatrix'].setValue(False)
def setTranslationFromMatrix(node, frame):
node['translate'].setKeyAt(frame)
tx = node['matrix'].valueAt(frame, converToIndex(0, 3))
node['translate'].setValueAt(tx, frame, 0)
#
ty = node['matrix'].valueAt(frame, converToIndex(1, 3))
node['translate'].setValueAt(ty, frame, 1)
#
tz = node['matrix'].valueAt(frame, converToIndex(2, 3))
node['translate'].setValueAt(tz, frame, 2)
def setScaleFromMatrix(node, frame):
node['scaling'].setKeyAt(frame)
sx = node['matrix'].valueAt(frame, converToIndex(0, 0))
node['scaling'].setValueAt(sx, frame, 0)
#
sy = node['matrix'].valueAt(frame, converToIndex(1, 1))
node['scaling'].setValueAt(sy, frame, 1)
#
sz = node['matrix'].valueAt(frame, converToIndex(2, 2))
node['scaling'].setValueAt(sz, frame, 2)
def setRotationFromMatrix(node, frame):
import _nukemath
m4 = _nukemath.Matrix4()
for i in xrange(16):
v = node['matrix'].valueAt(frame,i)
logging.debug("Matrix value at %d=%f", i, v)
m4[i] = v
m4.rotationOnly()
ZXYRotation = m4.rotationsZXY()
logging.debug("ZXY rotation=%s", ZXYRotation)
node['rot_order'].setValue("ZXY")
node['rotate'].setKeyAt(frame)
for i in xrange(3):
r = ZXYRotation[i]
d = math.degrees(r)
node['rotate'].setValueAt(d, frame, i)
def converToIndex(x, y, d=4):
return y*d+x
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