nvm fixed it, this is confusing tho but when you are done with your
transformations and you find yourself at the origin you just need to add
the previous position to your transformed points , the code speaks for
itself,
basically if the plane stay the same, it means it works , and it worked ...
import maya.api.OpenMaya as om
import math
sel = om.MSelectionList()
sel.add('pPlaneShape1')
mesh = sel.getDependNode(0)
fnm = om.MFnMesh( mesh )
normal = fnm.getPolygonNormal( 0 )
o = om.MItMeshPolygon(mesh).center()
def get_orient_mat( a ):
b = om.MVector.kYaxisVector
i = om.MMatrix.kIdentity
v = a ^ b
ang = a.angle(b)
if ang < 1e-6:
res = i
return res
if math.fabs(ang-math.pi) < 1e-6:
res = om.MMatrix( [
(math.cos(math.pi) , math.sin(math.pi), 0, 0),
(-math.sin(math.pi), math.cos(math.pi), 0, 0),
(0, 0, 1, 0),
(0,0,0,1) ] )
return res
c = math.cos( ang)
skew = om.MMatrix( [
(0, v.z, -v.y, 0),
(-v.z, 0, v.x, 0),
(v.y, -v.x, 0, 0),
(0,0,0,1) ] )
res = i + skew + (skew*skew)*( 1 / (1+c) )
return res
# matrix to orient in 2D
rmat = get_orient_mat( normal)
# matrix to position to center
tmat = om.MMatrix( [
(1,0,0,0),
(0,1,0,0),
(0,0,1,0),
(-o.x,-o.y,-o.z,1) ] )
# matrix to flatten on y
smat = om.MMatrix( [
(1,0,0,0),
(0,0,0,0),
(0,0,1,0),
(0,0,0,1)] )
mat = tmat * rmat * smat
for i in xrange( fnm.numVertices ):
cur = fnm.getPoint( i)
# cur*=tmat
# cur*=rmat
# cur*=smat
cur*=mat
fnm.setPoint( i , cur )
#reverse
for i in xrange( fnm.numVertices ):
cur = fnm.getPoint( i)
duh = om.MPoint( om.MVector( cur * rmat.inverse() ) + om.MVector( o) )
fnm.setPoint( i , duh )
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