Created
August 23, 2011 08:12
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Nuke corner pin to matrix
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# and here is the script in case anyone is interested :) | |
import nuke | |
def getTheCornerpinAsMatrix(): | |
projectionMatrixTo = nuke.math.Matrix4() | |
projectionMatrixFrom = nuke.math.Matrix4() | |
#dir(projectionMatrix) | |
theCornerpinNode = nuke.selectedNode() | |
imageWidth = float(theCornerpinNode.width()) | |
imageHeight = float(theCornerpinNode.height()) | |
to1x, to1y = theCornerpinNode['to1'].value() | |
to2x, to2y = theCornerpinNode['to2'].value() | |
to3x, to3y = theCornerpinNode['to3'].value() | |
to4x, to4y = theCornerpinNode['to4'].value() | |
from1x, from1y = theCornerpinNode['from1'].value() | |
from2x, from2y = theCornerpinNode['from2'].value() | |
from3x, from3y = theCornerpinNode['from3'].value() | |
from4x, from4y = theCornerpinNode['from4'].value() | |
projectionMatrixTo.mapUnitSquareToQuad(to1x,to1y,to2x,to2y,to3x,to3y,to4x,to4y) | |
projectionMatrixFrom.mapUnitSquareToQuad(from1x,from1y,from2x,from2y,from3x,from3y,from4x,from4y) | |
theCornerpinAsMatrix = projectionMatrixTo*projectionMatrixFrom.inverse() | |
theCornerpinAsMatrix.transpose() | |
return theCornerpinAsMatrix |
added inverse option and exxtra matrix knob to calculations :)
import nuke
def mat4():
M = nuke.math.Matrix4()
M.makeIdentity()
return M
def cornerpin_to_matrix( node, frame ):
# converts cornerpin to transform matrix
format_width = float(node.width())
format_height = float(node.height())
# make matrices
m_to = mat4()
m_from = mat4()
m_ex = mat4()
# get extra matrix
extra_values = node["transform_matrix"].getValueAt(frame)
for i in range(16): m_ex[i] = extra_values[i]
m_ex.transpose()
# get from to values
to1_x, to1_y = node['to1'].getValueAt(frame)
to2_x, to2_y = node['to2'].getValueAt(frame)
to3_x, to3_y = node['to3'].getValueAt(frame)
to4_x, to4_y = node['to4'].getValueAt(frame)
from1_x, from1_y = node['from1'].getValueAt(frame)
from2_x, from2_y = node['from2'].getValueAt(frame)
from3_x, from3_y = node['from3'].getValueAt(frame)
from4_x, from4_y = node['from4'].getValueAt(frame)
# build matrces
m_to.mapUnitSquareToQuad( to1_x, to1_y,
to2_x, to2_y,
to3_x, to3_y,
to4_x, to4_y )
m_from.mapUnitSquareToQuad( from1_x, from1_y,
from2_x, from2_y,
from3_x, from3_y,
from4_x, from4_y )
# combine matrices
out = m_to * m_from.inverse()
# add extra matrix
out = m_ex * out
# if inverted do it at the result
if node['invert'].getValueAt(frame):
out = out.inverse()
return out
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Hi dude... this is gonna be very very useful to me ... Thanks a lot.